Update readme and regen

* Update CommonJSModuleRecord.cpp

* smaller

* [node:path] Fix crash, mark TODO

---------

Co-authored-by: Jarred Sumner <709451+Jarred-Sumner@users.noreply.github.com>

.gitattributes

@@ -8,3 +8,26 @@ src/bun.js/bindings/sqlite/sqlite3_local.h linguist-vendored
 *.zig text eol=lf
 src/bun.js/bindings/simdutf.cpp linguist-vendored
 src/bun.js/bindings/simdutf.h linguist-vendored
+
+src/js/out/WebCoreJSBuiltins.cpp linguist-generated
+src/js/out/WebCoreJSBuiltins.h linguist-generated
+src/js/out/WebCoreJSBuiltins.d.ts linguist-generated
+
+src/bun.js/bindings/ZigGeneratedClasses.h linguist-generated
+src/bun.js/bindings/ZigGeneratedClasses.cpp linguist-generated
+
+src/bun.js/bindings/ZigGeneratedCode.h linguist-generated
+src/bun.js/bindings/ZigGeneratedCode.cpp linguist-generated
+
+src/bun.js/bindings/headers.h linguist-generated
+src/bun.js/bindings/headers.zig linguist-generated
+
+src/bun.js/bindings/JSSink.h linguist-generated
+src/bun.js/bindings/JSSink.zig linguist-generated
+
+src/bun.js/bindings/ZigGeneratedClasses+DOMClientIsoSubspaces.h linguist-generated
+src/bun.js/bindings/ZigGeneratedClasses+DOMIsoSubspaces.h linguist-generated
+src/bun.js/bindings/ZigGeneratedClasses+lazyStructureHeader.h linguist-generated
+src/bun.js/bindings/ZigGeneratedClasses+lazyStructureImpl.h linguist-generated
+
+docs/**/* linguist-documentation

.github/workflows/bun-deploy-site.yml

@@ -12,6 +12,7 @@ jobs:
   deploy:
     name: Deploy site
     runs-on: ubuntu-latest
+    if: github.repository_owner == 'oven-sh'
     steps:
       - name: Trigger Vercel build
-        run: curl ${{ secrets.VERCEL_DEPLOY_HOOK }}
+        run: curl ${{ secrets.VERCEL_DEPLOY_HOOK }}

.github/workflows/bun-ecosystem-test.yml

@@ -14,6 +14,7 @@ jobs:
   test:
     name: ${{ matrix.tag }}
     runs-on: ${{ matrix.os }}
+    if: github.repository_owner == 'oven-sh'
     timeout-minutes: 10
     strategy:
       fail-fast: false
@@ -35,9 +36,9 @@ jobs:
     steps:
       - id: checkout
         name: Checkout
-        uses: actions/checkout@v3
+        uses: Bhacaz/checkout-files@v2
         with:
-          submodules: false
+          files: packages/bun-internal-test
       - id: setup
         name: Setup
         uses: oven-sh/setup-bun@v1

.github/workflows/bun-linux-aarch64.yml

@@ -1,4 +1,9 @@
 name: bun-linux
+
+concurrency:
+  group: bun-linux-aarch64-${{ github.ref }}
+  cancel-in-progress: true
+
 env:
   REGISTRY: ghcr.io
   IMAGE_NAME: ${{ github.repository }}
@@ -21,6 +26,7 @@ jobs:
   linux:
     name: ${{matrix.tag}}
     runs-on: ${{matrix.runner}}
+    if: github.repository_owner == 'oven-sh'
     timeout-minutes: 90
     strategy:
       matrix:
@@ -30,7 +36,7 @@ jobs:
             arch: aarch64
             build_arch: arm64
             runner: linux-arm64
-            webkit_url: "https://github.com/oven-sh/WebKit/releases/download/apr12-23/bun-webkit-linux-arm64-lto.tar.gz"
+            webkit_url: "https://github.com/oven-sh/WebKit/releases/download/may20/bun-webkit-linux-arm64-lto.tar.gz"
             webkit_basename: "bun-webkit-linux-arm64-lto"
             build_machine_arch: aarch64
 

.github/workflows/bun-linux-build.yml

@@ -1,4 +1,9 @@
 name: bun-linux
+
+concurrency:
+  group: bun-linux-build-${{ github.ref }}
+  cancel-in-progress: true
+
 env:
   REGISTRY: ghcr.io
   IMAGE_NAME: ${{ github.repository }}
@@ -30,6 +35,7 @@ jobs:
   linux:
     name: ${{matrix.tag}}
     runs-on: ${{matrix.runner}}
+    if: github.repository_owner == 'oven-sh'
     timeout-minutes: 90
     strategy:
       fail-fast: false
@@ -40,7 +46,7 @@ jobs:
             arch: x86_64
             build_arch: amd64
             runner: big-ubuntu
-            webkit_url: "https://github.com/oven-sh/WebKit/releases/download/apr12-23/bun-webkit-linux-amd64-lto.tar.gz"
+            webkit_url: "https://github.com/oven-sh/WebKit/releases/download/may20/bun-webkit-linux-amd64-lto.tar.gz"
             webkit_basename: "bun-webkit-linux-amd64-lto"
             build_machine_arch: x86_64
           - cpu: nehalem
@@ -48,7 +54,7 @@ jobs:
             arch: x86_64
             build_arch: amd64
             runner: big-ubuntu
-            webkit_url: "https://github.com/oven-sh/WebKit/releases/download/apr12-23/bun-webkit-linux-amd64-lto.tar.gz"
+            webkit_url: "https://github.com/oven-sh/WebKit/releases/download/may20/bun-webkit-linux-amd64-lto.tar.gz"
             webkit_basename: "bun-webkit-linux-amd64-lto"
             build_machine_arch: x86_64
 

.github/workflows/bun-mac-aarch64.yml

@@ -1,4 +1,9 @@
 name: bun-macOS-aarch64
+
+concurrency:
+  group: bun-macOS-aarch64-${{ github.ref }}
+  cancel-in-progress: true
+
 env:
   REGISTRY: ghcr.io
   IMAGE_NAME: ${{ github.repository }}
@@ -28,6 +33,7 @@ jobs:
   macos-object-files:
     name: macOS Object
     runs-on: med-ubuntu
+    if: github.repository_owner == 'oven-sh'
     strategy:
       matrix:
         include:
@@ -100,6 +106,7 @@ jobs:
   macOS-cpp:
     name: macOS C++
     runs-on: ${{ matrix.runner }}
+    if: github.repository_owner == 'oven-sh'
     timeout-minutes: 90
     strategy:
       matrix:
@@ -110,7 +117,7 @@ jobs:
           #   obj: bun-obj-darwin-x64-baseline
           #   runner: macos-11
           #   artifact: bun-obj-darwin-x64-baseline
-          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/apr12-23/bun-webkit-macos-amd64-lto.tar.gz"
+          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/may20/bun-webkit-macos-amd64-lto.tar.gz"
           #   dependencies: true
           #   compile_obj: false
           # - cpu: haswell
@@ -119,7 +126,7 @@ jobs:
           #   obj: bun-obj-darwin-x64
           #   runner: macos-11
           #   artifact: bun-obj-darwin-x64
-          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/apr12-23/bun-webkit-macos-amd64-lto.tar.gz"
+          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/may20/bun-webkit-macos-amd64-lto.tar.gz"
           #   dependencies: true
           #   compile_obj: false
           # - cpu: nehalem
@@ -128,7 +135,7 @@ jobs:
           #   obj: bun-obj-darwin-x64-baseline
           #   runner: macos-11
           #   artifact: bun-obj-darwin-x64-baseline
-          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/apr12-23/bun-webkit-macos-amd64-lto.tar.gz"
+          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/may20/bun-webkit-macos-amd64-lto.tar.gz"
           #   dependencies: false
           #   compile_obj: true
           # - cpu: haswell
@@ -137,7 +144,7 @@ jobs:
           #   obj: bun-obj-darwin-x64
           #   runner: macos-11
           #   artifact: bun-obj-darwin-x64
-          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/apr12-23/bun-webkit-macos-amd64-lto.tar.gz"
+          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/may20/bun-webkit-macos-amd64-lto.tar.gz"
           #   dependencies: false
           #   compile_obj: true
           - cpu: native
@@ -145,7 +152,7 @@ jobs:
             tag: bun-darwin-aarch64
             obj: bun-obj-darwin-aarch64
             artifact: bun-obj-darwin-aarch64
-            webkit_url: "https://github.com/oven-sh/WebKit/releases/download/apr12-23/bun-webkit-macos-arm64-lto.tar.gz"
+            webkit_url: "https://github.com/oven-sh/WebKit/releases/download/may20/bun-webkit-macos-arm64-lto.tar.gz"
             runner: macos-arm64
             dependencies: true
             compile_obj: true
@@ -237,6 +244,7 @@ jobs:
   macOS:
     name: macOS Link
     runs-on: ${{ matrix.runner }}
+    if: github.repository_owner == 'oven-sh'
     needs: [macOS-cpp, macos-object-files]
     timeout-minutes: 90
     strategy:
@@ -249,7 +257,7 @@ jobs:
           #   package: bun-darwin-x64
           #   runner: macos-11
           #   artifact: bun-obj-darwin-x64-baseline
-          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/apr12-23/bun-webkit-macos-amd64-lto.tar.gz"
+          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/may20/bun-webkit-macos-amd64-lto.tar.gz"
           # - cpu: haswell
           #   arch: x86_64
           #   tag: bun-darwin-x64
@@ -257,14 +265,14 @@ jobs:
           #   package: bun-darwin-x64
           #   runner: macos-11
           #   artifact: bun-obj-darwin-x64
-          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/apr12-23/bun-webkit-macos-amd64-lto.tar.gz"
+          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/may20/bun-webkit-macos-amd64-lto.tar.gz"
           - cpu: native
             arch: aarch64
             tag: bun-darwin-aarch64
             obj: bun-obj-darwin-aarch64
             package: bun-darwin-aarch64
             artifact: bun-obj-darwin-aarch64
-            webkit_url: "https://github.com/oven-sh/WebKit/releases/download/apr12-23/bun-webkit-macos-arm64-lto.tar.gz"
+            webkit_url: "https://github.com/oven-sh/WebKit/releases/download/may20/bun-webkit-macos-arm64-lto.tar.gz"
             runner: macos-arm64
     steps:
       - uses: actions/checkout@v3
@@ -388,7 +396,7 @@ jobs:
     name: Tests ${{matrix.tag}}
     runs-on: ${{ matrix.runner }}
     needs: [macOS]
-    if: github.event_name == 'pull_request'
+    if: github.event_name == 'pull_request' && github.repository_owner == 'oven-sh'
     timeout-minutes: 10
     outputs:
       failing_tests: ${{ steps.test.outputs.failing_tests }}

.github/workflows/bun-mac-x64-baseline.yml

@@ -1,4 +1,9 @@
 name: bun-macOS-x64-baseline
+
+concurrency:
+  group: bun-macOS-x64-baseline-${{ github.ref }}
+  cancel-in-progress: true
+
 env:
   REGISTRY: ghcr.io
   IMAGE_NAME: ${{ github.repository }}
@@ -28,6 +33,7 @@ jobs:
   macos-object-files:
     name: macOS Object
     runs-on: med-ubuntu
+    if: github.repository_owner == 'oven-sh'
     strategy:
       matrix:
         include:
@@ -100,6 +106,7 @@ jobs:
   macOS-cpp:
     name: macOS C++
     runs-on: ${{ matrix.runner }}
+    if: github.repository_owner == 'oven-sh'
     timeout-minutes: 90
     strategy:
       matrix:
@@ -110,7 +117,7 @@ jobs:
             obj: bun-obj-darwin-x64-baseline
             runner: macos-11
             artifact: bun-obj-darwin-x64-baseline
-            webkit_url: "https://github.com/oven-sh/WebKit/releases/download/apr12-23/bun-webkit-macos-amd64-lto.tar.gz"
+            webkit_url: "https://github.com/oven-sh/WebKit/releases/download/may20/bun-webkit-macos-amd64-lto.tar.gz"
             dependencies: true
             compile_obj: false
           # - cpu: haswell
@@ -119,7 +126,7 @@ jobs:
           #   obj: bun-obj-darwin-x64
           #   runner: macos-11
           #   artifact: bun-obj-darwin-x64
-          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/apr12-23/bun-webkit-macos-amd64-lto.tar.gz"
+          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/may20/bun-webkit-macos-amd64-lto.tar.gz"
           #   dependencies: true
           #   compile_obj: false
           - cpu: nehalem
@@ -128,7 +135,7 @@ jobs:
             obj: bun-obj-darwin-x64-baseline
             runner: macos-11
             artifact: bun-obj-darwin-x64-baseline
-            webkit_url: "https://github.com/oven-sh/WebKit/releases/download/apr12-23/bun-webkit-macos-amd64-lto.tar.gz"
+            webkit_url: "https://github.com/oven-sh/WebKit/releases/download/may20/bun-webkit-macos-amd64-lto.tar.gz"
             dependencies: false
             compile_obj: true
           # - cpu: haswell
@@ -137,7 +144,7 @@ jobs:
           #   obj: bun-obj-darwin-x64
           #   runner: macos-11
           #   artifact: bun-obj-darwin-x64
-          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/apr12-23/bun-webkit-macos-amd64-lto.tar.gz"
+          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/may20/bun-webkit-macos-amd64-lto.tar.gz"
           #   dependencies: false
           #   compile_obj: true
           # - cpu: native
@@ -145,7 +152,7 @@ jobs:
           #   tag: bun-darwin-aarch64
           #   obj: bun-obj-darwin-aarch64
           #   artifact: bun-obj-darwin-aarch64
-          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/apr12-23/bun-webkit-macos-amd64-lto.tar.gz"
+          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/may20/bun-webkit-macos-amd64-lto.tar.gz"
           #   runner: macos-arm64
           #   dependencies: true
           #   compile_obj: true
@@ -238,6 +245,7 @@ jobs:
   macOS:
     name: macOS Link
     runs-on: ${{ matrix.runner }}
+    if: github.repository_owner == 'oven-sh'
     needs: [macOS-cpp, macos-object-files]
     timeout-minutes: 90
     strategy:
@@ -250,7 +258,7 @@ jobs:
             package: bun-darwin-x64
             runner: macos-11
             artifact: bun-obj-darwin-x64-baseline
-            webkit_url: "https://github.com/oven-sh/WebKit/releases/download/apr12-23/bun-webkit-macos-amd64-lto.tar.gz"
+            webkit_url: "https://github.com/oven-sh/WebKit/releases/download/may20/bun-webkit-macos-amd64-lto.tar.gz"
           # - cpu: haswell
           #   arch: x86_64
           #   tag: bun-darwin-x64
@@ -258,14 +266,14 @@ jobs:
           #   package: bun-darwin-x64
           #   runner: macos-11
           #   artifact: bun-obj-darwin-x64
-          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/apr12-23/bun-webkit-macos-amd64-lto.tar.gz"
+          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/may20/bun-webkit-macos-amd64-lto.tar.gz"
           # - cpu: native
           #   arch: aarch64
           #   tag: bun-darwin-aarch64
           #   obj: bun-obj-darwin-aarch64
           #   package: bun-darwin-aarch64
           #   artifact: bun-obj-darwin-aarch64
-          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/apr12-23/bun-webkit-macos-amd64-lto.tar.gz"
+          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/may20/bun-webkit-macos-amd64-lto.tar.gz"
           #   runner: macos-arm64
     steps:
       - uses: actions/checkout@v3
@@ -392,7 +400,7 @@ jobs:
     name: Tests ${{matrix.tag}}
     runs-on: ${{ matrix.runner }}
     needs: [macOS]
-    if: github.event_name == 'pull_request'
+    if: github.event_name == 'pull_request' && github.repository_owner == 'oven-sh'
     timeout-minutes: 30
     outputs:
       failing_tests: ${{ steps.test.outputs.failing_tests }}

.github/workflows/bun-mac-x64.yml

@@ -1,4 +1,9 @@
 name: bun-macOS-x64
+
+concurrency:
+  group: bun-macOS-x64-${{ github.ref }}
+  cancel-in-progress: true
+
 env:
   REGISTRY: ghcr.io
   IMAGE_NAME: ${{ github.repository }}
@@ -28,6 +33,7 @@ jobs:
   macos-object-files:
     name: macOS Object
     runs-on: med-ubuntu
+    if: github.repository_owner == 'oven-sh'
     strategy:
       matrix:
         include:
@@ -100,6 +106,7 @@ jobs:
   macOS-cpp:
     name: macOS C++
     runs-on: ${{ matrix.runner }}
+    if: github.repository_owner == 'oven-sh'
     timeout-minutes: 90
     strategy:
       matrix:
@@ -110,7 +117,7 @@ jobs:
           #   obj: bun-obj-darwin-x64-baseline
           #   runner: macos-11
           #   artifact: bun-obj-darwin-x64-baseline
-          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/apr12-23/bun-webkit-macos-amd64-lto.tar.gz"
+          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/may20/bun-webkit-macos-amd64-lto.tar.gz"
           #   dependencies: true
           #   compile_obj: false
           - cpu: haswell
@@ -119,7 +126,7 @@ jobs:
             obj: bun-obj-darwin-x64
             runner: macos-11
             artifact: bun-obj-darwin-x64
-            webkit_url: "https://github.com/oven-sh/WebKit/releases/download/apr12-23/bun-webkit-macos-amd64-lto.tar.gz"
+            webkit_url: "https://github.com/oven-sh/WebKit/releases/download/may20/bun-webkit-macos-amd64-lto.tar.gz"
             dependencies: true
             compile_obj: false
           # - cpu: nehalem
@@ -128,7 +135,7 @@ jobs:
           #   obj: bun-obj-darwin-x64-baseline
           #   runner: macos-11
           #   artifact: bun-obj-darwin-x64-baseline
-          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/apr12-23/bun-webkit-macos-amd64-lto.tar.gz"
+          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/may20/bun-webkit-macos-amd64-lto.tar.gz"
           #   dependencies: false
           #   compile_obj: true
           - cpu: haswell
@@ -137,7 +144,7 @@ jobs:
             obj: bun-obj-darwin-x64
             runner: macos-11
             artifact: bun-obj-darwin-x64
-            webkit_url: "https://github.com/oven-sh/WebKit/releases/download/apr12-23/bun-webkit-macos-amd64-lto.tar.gz"
+            webkit_url: "https://github.com/oven-sh/WebKit/releases/download/may20/bun-webkit-macos-amd64-lto.tar.gz"
             dependencies: false
             compile_obj: true
           # - cpu: native
@@ -145,7 +152,7 @@ jobs:
           #   tag: bun-darwin-aarch64
           #   obj: bun-obj-darwin-aarch64
           #   artifact: bun-obj-darwin-aarch64
-          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/apr12-23/bun-webkit-macos-arm64-lto.tar.gz"
+          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/may20/bun-webkit-macos-arm64-lto.tar.gz"
           #   runner: macos-arm64
           #   dependencies: true
           #   compile_obj: true
@@ -240,6 +247,7 @@ jobs:
   macOS:
     name: macOS Link
     runs-on: ${{ matrix.runner }}
+    if: github.repository_owner == 'oven-sh'
     needs: [macOS-cpp, macos-object-files]
     timeout-minutes: 90
     strategy:
@@ -252,7 +260,7 @@ jobs:
           #   package: bun-darwin-x64
           #   runner: macos-11
           #   artifact: bun-obj-darwin-x64-baseline
-          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/apr12-23/bun-webkit-macos-amd64-lto.tar.gz"
+          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/may20/bun-webkit-macos-amd64-lto.tar.gz"
           - cpu: haswell
             arch: x86_64
             tag: bun-darwin-x64
@@ -260,14 +268,14 @@ jobs:
             package: bun-darwin-x64
             runner: macos-11
             artifact: bun-obj-darwin-x64
-            webkit_url: "https://github.com/oven-sh/WebKit/releases/download/apr12-23/bun-webkit-macos-amd64-lto.tar.gz"
+            webkit_url: "https://github.com/oven-sh/WebKit/releases/download/may20/bun-webkit-macos-amd64-lto.tar.gz"
           # - cpu: native
           #   arch: aarch64
           #   tag: bun-darwin-aarch64
           #   obj: bun-obj-darwin-aarch64
           #   package: bun-darwin-aarch64
           #   artifact: bun-obj-darwin-aarch64
-          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/apr12-23/bun-webkit-macos-arm64-lto.tar.gz"
+          #   webkit_url: "https://github.com/oven-sh/WebKit/releases/download/may20/bun-webkit-macos-arm64-lto.tar.gz"
           #   runner: macos-arm64
     steps:
       - uses: actions/checkout@v3
@@ -394,7 +402,7 @@ jobs:
     name: Tests ${{matrix.tag}}
     runs-on: ${{ matrix.runner }}
     needs: [macOS]
-    if: github.event_name == 'pull_request'
+    if: github.event_name == 'pull_request' && github.repository_owner == 'oven-sh'
     timeout-minutes: 30
     outputs:
       failing_tests: ${{ steps.test.outputs.failing_tests }}

.github/workflows/bun-release-canary.yml

@@ -8,6 +8,7 @@ jobs:
   sign:
     name: Sign Release
     runs-on: ubuntu-latest
+    if: github.repository_owner == 'oven-sh'
     defaults:
       run:
         working-directory: packages/bun-release
@@ -40,6 +41,7 @@ jobs:
     name: Release to NPM
     runs-on: ubuntu-latest
     needs: sign
+    if: github.repository_owner == 'oven-sh'
     defaults:
       run:
         working-directory: packages/bun-release
@@ -108,6 +110,7 @@ jobs:
     name: Release to Dockerhub
     runs-on: ubuntu-latest
     needs: sign
+    if: github.repository_owner == 'oven-sh'
     steps:
       - id: checkout
         name: Checkout
@@ -149,6 +152,7 @@ jobs:
     name: Upload to S3
     runs-on: ubuntu-latest
     needs: sign
+    if: github.repository_owner == 'oven-sh'
     defaults:
       run:
         working-directory: packages/bun-release

.github/workflows/bun-release-types-canary.yml

@@ -11,6 +11,7 @@ jobs:
   npm-types:
     name: Release types to NPM
     runs-on: ubuntu-latest
+    if: github.repository_owner == 'oven-sh'
     defaults:
       run:
         working-directory: packages/bun-types

.github/workflows/bun-release.yml

@@ -14,6 +14,7 @@ jobs:
   sign:
     name: Sign Release
     runs-on: ubuntu-latest
+    if: github.repository_owner == 'oven-sh'
     defaults:
       run:
         working-directory: packages/bun-release
@@ -53,6 +54,7 @@ jobs:
     name: Release to NPM
     runs-on: ubuntu-latest
     needs: sign
+    if: github.repository_owner == 'oven-sh'
     defaults:
       run:
         working-directory: packages/bun-release
@@ -85,6 +87,7 @@ jobs:
     name: Release types to NPM
     runs-on: ubuntu-latest
     needs: sign
+    if: github.repository_owner == 'oven-sh'
     defaults:
       run:
         working-directory: packages/bun-types
@@ -127,6 +130,7 @@ jobs:
     name: Release to Dockerhub
     runs-on: ubuntu-latest
     needs: sign
+    if: github.repository_owner == 'oven-sh'
     steps:
       - id: checkout
         name: Checkout
@@ -177,6 +181,7 @@ jobs:
     name: Release to Homebrew
     runs-on: ubuntu-latest
     needs: sign
+    if: github.repository_owner == 'oven-sh'
     steps:
       - id: checkout
         name: Checkout
@@ -218,6 +223,7 @@ jobs:
     name: Upload to S3
     runs-on: ubuntu-latest
     needs: sign
+    if: github.repository_owner == 'oven-sh'
     defaults:
       run:
         working-directory: packages/bun-release

.github/workflows/bun-test.yml

@@ -1,59 +0,0 @@
-name: Test
-
-on:
-  workflow_dispatch:
-    inputs:
-      version:
-        description: "The version of Bun to run"
-        required: true
-        default: "canary"
-        type: string
-      path:
-        description: "The path to the test files"
-        required: true
-        default: "test/"
-        type: string
-      timeout:
-        description: "The timeout per file in milliseconds"
-        required: true
-        default: "15000"
-        type: number
-jobs:
-  test:
-    name: ${{ matrix.tag }}
-    runs-on: ${{ matrix.os }}
-    timeout-minutes: 10
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          - os: ubuntu-latest
-            tag: linux-x64
-            url: linux/x64?avx2=true
-          - os: ubuntu-latest
-            tag: linux-x64-baseline
-            url: linux/x64?baseline=true
-          # FIXME: runner fails with "No tests found"?
-          #- os: macos-latest
-          #  tag: darwin-x64
-          #  url: darwin/x64?avx2=true
-          - os: macos-latest
-            tag: darwin-x64-baseline
-            url: darwin/x64?baseline=true
-    steps:
-      - id: checkout
-        name: Checkout
-        uses: actions/checkout@v3
-        with:
-          submodules: false
-      - id: setup
-        name: Setup
-        uses: oven-sh/setup-bun@v1
-        with:
-          bun-download-url: https://bun.sh/download/${{ github.event.inputs.version }}/${{ matrix.url }}
-      - id: test
-        name: Test
-        run: |
-          bun install
-          bun install --cwd test
-          bun x ts-node --esm .github/scripts/test-runner.ts ${{ github.event.inputs.path }} --isolated --timeout=${{ github.event.inputs.timeout }}

.github/workflows/bun-typecheck.yml

@@ -1,34 +0,0 @@
-name: typecheck
-on:
-  push:
-    branches: [main]
-    paths:
-      - "packages/bun-types/**"
-      - "test/**"
-
-  pull_request:
-    branches:
-      - main
-    paths:
-      - "packages/bun-types/**"
-      - "test/**"
-
-jobs:
-  tests:
-    name: check-tests
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout repo
-        uses: actions/checkout@v3
-      - name: Install bun
-        uses: oven-sh/setup-bun@v1
-        with:
-          bun-version: canary
-      - name: Install dependencies
-        run: bun install
-      - name: Install dependencies
-        run: bun install
-        working-directory: test
-      - name: Typecheck tests
-        run: bun run typecheck

.gitignore

@@ -116,3 +116,8 @@ src/bun.js/debug-bindings-obj
 failing-tests.txt
 test.txt
 myscript.sh
+
+cold-jsc-start
+cold-jsc-start.d
+
+/test.ts

.gitmodules

@@ -65,3 +65,7 @@ fetchRecurseSubmodules = false
 [submodule "src/deps/c-ares"]
 	path = src/deps/c-ares
 	url = https://github.com/c-ares/c-ares.git
+[submodule "src/deps/zstd"]
+	path = src/deps/zstd
+	url = https://github.com/facebook/zstd.git
+	ignore = dirty

.prettierignore

@@ -1,6 +1,6 @@
 src/fallback.html
 src/bun.js/WebKit
-src/bun.js/builtins/js
+src/js/out
 src/*.out.js
 src/*out.*.js
 src/deps
@@ -10,3 +10,4 @@ test/snapshots
 test/snapshots-no-hmr
 test/js/deno/*.test.ts
 test/js/deno/**/*.test.ts
+bench/react-hello-world/react-hello-world.node.js

.vscode/c_cpp_properties.json

@@ -15,15 +15,15 @@
         "${workspaceFolder}/src/bun.js/bindings/webcore/",
         "${workspaceFolder}/src/bun.js/bindings/sqlite/",
         "${workspaceFolder}/src/bun.js/bindings/webcrypto/",
-        "${workspaceFolder}/src/bun.js/builtins/",
-        "${workspaceFolder}/src/bun.js/builtins/cpp",
+        "${workspaceFolder}/src/js/builtins/",
+        "${workspaceFolder}/src/js/out",
         "${workspaceFolder}/src/deps/boringssl/include/",
         "${workspaceFolder}/src/deps",
-        "${workspaceFolder}/src/deps/uws/uSockets/src"
+        "${workspaceFolder}/src/deps/uws/uSockets/src",
+        "${workspaceFolder}/src/deps/uws/src"
       ],
       "browse": {
         "path": [
-          "${workspaceFolder}/../webkit-build/include/",
           "${workspaceFolder}/bun-webkit/include/",
           "${workspaceFolder}/src/bun.js/WebKit/WebKitBuild/Release/",
           "${workspaceFolder}/src/bun.js/WebKit/WebKitBuild/Release/ICU/Headers/",
@@ -33,12 +33,14 @@
           "${workspaceFolder}/src/bun.js/bindings/*",
           "${workspaceFolder}/src/bun.js/bindings/sqlite/",
           "${workspaceFolder}/src/bun.js/bindings/webcrypto/",
-          "${workspaceFolder}/src/bun.js/builtins/*",
-          "${workspaceFolder}/src/bun.js/builtins/cpp/*",
+          "${workspaceFolder}/src/bun.js/bindings/webcore/",
+          "${workspaceFolder}/src/js/builtins/*",
+          "${workspaceFolder}/src/js/out/*",
           "${workspaceFolder}/src/bun.js/modules/*",
           "${workspaceFolder}/src/deps",
           "${workspaceFolder}/src/deps/boringssl/include/",
-          "${workspaceFolder}/src/deps/uws/uSockets/src"
+          "${workspaceFolder}/src/deps/uws/uSockets/src",
+          "${workspaceFolder}/src/deps/uws/src"
         ],
         "limitSymbolsToIncludedHeaders": true,
         "databaseFilename": ".vscode/cppdb"

.vscode/launch.json

@@ -1,129 +1,209 @@
 {
+  // The usage of BUN_GARBAGE_COLLECTOR_LEVEL=2 is important for debugging
+  // It will force the garbage collector to run after every test and every call to expect()
+  // it makes our tests very slow
+  // But it helps catch memory bugs
+
+  // SIGHUP must be ignored or the debugger will pause when a spawned subprocess exits:
+  // { "initCommands": ["process handle -p false -s false -n false SIGHUP"] }
   "version": "0.2.0",
   "configurations": [
     {
       "type": "lldb",
       "request": "launch",
-      "name": "bun test",
+      "name": "bun test [file]",
       "program": "bun-debug",
-      "args": ["wiptest", "${file}"],
-      "cwd": "${workspaceFolder}",
+      "args": ["test", "${file}"],
+      "cwd": "${fileDirname}",
       "env": {
-        "FORCE_COLOR": "1"
+        "FORCE_COLOR": "1",
+        "BUN_DEBUG_QUIET_LOGS": "1",
+        "BUN_GARBAGE_COLLECTOR_LEVEL": "2"
       },
+      "initCommands": ["process handle -p false -s false -n false SIGHUP"],
       "console": "internalConsole"
     },
     {
       "type": "lldb",
       "request": "launch",
-      "name": "bun test --watch",
+      "name": "bun test [file] (fast)",
       "program": "bun-debug",
-      "args": ["--watch", "test", "${file}"],
-      "cwd": "${workspaceFolder}",
+      "args": ["test", "${file}"],
+      "cwd": "${fileDirname}",
+      "env": {
+        "FORCE_COLOR": "1",
+        "BUN_DEBUG_QUIET_LOGS": "1"
+      },
+      "initCommands": ["process handle -p false -s false -n false SIGHUP"],
+      "console": "internalConsole"
+    },
+
+    {
+      "type": "lldb",
+      "request": "launch",
+      "name": "bun test [file] (verbose)",
+      "program": "bun-debug",
+      "args": ["test", "${file}"],
+      "cwd": "${fileDirname}",
       "env": {
         "FORCE_COLOR": "1"
       },
+      "initCommands": ["process handle -p false -s false -n false SIGHUP"],
       "console": "internalConsole"
     },
     {
       "type": "lldb",
       "request": "launch",
-      "name": "bun test (all)",
+      "name": "bun test [file] --watch",
       "program": "bun-debug",
-      "args": ["wiptest"],
+      "args": ["test", "--watch", "${file}"],
+      "cwd": "${fileDirname}",
+      "env": {
+        "FORCE_COLOR": "1",
+        "BUN_DEBUG_QUIET_LOGS": "1"
+      },
+      "initCommands": ["process handle -p false -s false -n false SIGHUP"],
+      "console": "internalConsole"
+    },
+    {
+      "type": "lldb",
+      "request": "launch",
+      "name": "bun test [file] --only",
+      "program": "bun-debug",
+      "args": ["test", "--only", "${file}"],
+      "cwd": "${fileDirname}",
+      "env": {
+        "FORCE_COLOR": "1",
+        "BUN_DEBUG_QUIET_LOGS": "1"
+      },
+      "initCommands": ["process handle -p false -s false -n false SIGHUP"],
+      "console": "internalConsole"
+    },
+    {
+      "type": "lldb",
+      "request": "launch",
+      "name": "bun test [*]",
+      "program": "bun-debug",
+      "args": ["test"],
       "cwd": "${workspaceFolder}/test",
       "env": {
         "FORCE_COLOR": "1",
+        "BUN_DEBUG_QUIET_LOGS": "1",
         "BUN_GARBAGE_COLLECTOR_LEVEL": "2"
       },
+      "initCommands": ["process handle -p false -s false -n false SIGHUP"],
       "console": "internalConsole"
     },
     {
       "type": "lldb",
       "request": "launch",
-      "name": "bun run current file",
+      "name": "bun test [*] (fast)",
       "program": "bun-debug",
-      "args": ["${file}"],
-      "cwd": "${file}/../../",
+      "args": ["test"],
+      "cwd": "${workspaceFolder}/test",
       "env": {
-        "FORCE_COLOR": "1"
+        "FORCE_COLOR": "1",
+        "BUN_DEBUG_QUIET_LOGS": "1"
       },
+      "initCommands": ["process handle -p false -s false -n false SIGHUP"],
       "console": "internalConsole"
     },
     {
       "type": "lldb",
       "request": "launch",
-      "name": "bun run (watch)",
+      "name": "bun test [*] --only",
       "program": "bun-debug",
-      "args": ["--watch", "${file}"],
-      "cwd": "${file}/../../",
+      "args": ["test", "--only"],
+      "cwd": "${workspaceFolder}/test",
       "env": {
-        "FORCE_COLOR": "1"
+        "FORCE_COLOR": "1",
+        "BUN_DEBUG_QUIET_LOGS": "1"
       },
+      "initCommands": ["process handle -p false -s false -n false SIGHUP"],
       "console": "internalConsole"
     },
     {
       "type": "lldb",
       "request": "launch",
-      "name": "bun run (hot)",
+      "name": "bun run [file]",
       "program": "bun-debug",
-      "args": ["--hot", "${file}"],
-      "cwd": "${file}/../../",
+      "args": ["run", "${file}"],
+      "cwd": "${fileDirname}",
       "env": {
-        "FORCE_COLOR": "1"
+        "FORCE_COLOR": "1",
+        "BUN_DEBUG_QUIET_LOGS": "1"
       },
+      "initCommands": ["process handle -p false -s false -n false SIGHUP"],
       "console": "internalConsole"
     },
     {
       "type": "lldb",
       "request": "launch",
-      "name": "bun run",
+      "name": "bun run [Inspect]",
       "program": "bun-debug",
-      "args": ["check.tsx", "-c"],
-      "cwd": "${env:HOME}/Build/react-ssr",
+      "args": ["--inspect-brk", "${file}"],
+      "cwd": "${fileDirname}",
       "env": {
-        "FORCE_COLOR": "1"
-      },
-      "console": "internalConsole"
-    },
-
-    {
-      "type": "lldb",
-      "request": "launch",
-      "name": "bun http example",
-      "program": "bun-debug",
-      "args": ["run", "examples/http.ts"],
-      "cwd": "${workspaceFolder}",
-      "env": {
-        "FORCE_COLOR": "1"
+        "FORCE_COLOR": "1",
+        "BUN_DEBUG_QUIET_LOGS": "1"
       },
+      "initCommands": ["process handle -p false -s false -n false SIGHUP"],
       "console": "internalConsole"
     },
     {
       "type": "lldb",
       "request": "launch",
-      "name": "bun http file example",
+      "name": "bun run [file] (gc)",
       "program": "bun-debug",
-      "args": ["run", "examples/bun/http-file.ts"],
-      "cwd": "${workspaceFolder}",
+      "args": ["run", "${file}"],
+      "cwd": "${fileDirname}",
       "env": {
-        "FORCE_COLOR": "1"
+        "FORCE_COLOR": "1",
+        "BUN_DEBUG_QUIET_LOGS": "1",
+        "BUN_GARBAGE_COLLECTOR_LEVEL": "2"
       },
+      "initCommands": ["process handle -p false -s false -n false SIGHUP"],
       "console": "internalConsole"
     },
     {
       "type": "lldb",
       "request": "launch",
-      "name": "bun html-rewriter example",
+      "name": "bun run [file] (verbose)",
       "program": "bun-debug",
-      "args": ["run", "examples/bun/html-rewriter.ts"],
-      "cwd": "${workspaceFolder}",
+      "args": ["run", "${file}"],
+      "cwd": "${fileDirname}",
       "env": {
         "FORCE_COLOR": "1"
       },
+      "initCommands": ["process handle -p false -s false -n false SIGHUP"],
+      "console": "internalConsole"
+    },
+    {
+      "type": "lldb",
+      "request": "launch",
+      "name": "bun run [file] --watch",
+      "program": "bun-debug",
+      "args": ["run", "--watch", "${file}"],
+      "cwd": "${fileDirname}",
+      "env": {
+        "FORCE_COLOR": "1"
+      },
+      "initCommands": ["process handle -p false -s false -n false SIGHUP"],
+      "console": "internalConsole"
+    },
+    {
+      "type": "lldb",
+      "request": "launch",
+      "name": "bun run [file] --hot",
+      "program": "bun-debug",
+      "args": ["run", "--hot", "${file}"],
+      "cwd": "${fileDirname}",
+      "env": {
+        "FORCE_COLOR": "1"
+      },
+      "initCommands": ["process handle -p false -s false -n false SIGHUP"],
       "console": "internalConsole"
     },
-
     {
       "type": "lldb",
       "request": "launch",
@@ -138,12 +218,14 @@
       "request": "launch",
       "name": "bun build debug",
       "program": "bun-debug",
-      "args": ["bun", "./test/fixtures/bundle/trivial/index.js"],
+      "args": ["bun", "${file}"],
       "cwd": "${workspaceFolder}",
       "console": "internalConsole",
       "env": {
         "BUN_CONFIG_MINIFY_WHITESPACE": "1"
-      }
+      },
+      // SIGHUP must be ignored or the debugger will pause when a spawned subprocess exits.
+      "initCommands": ["process handle -p false -s false -n false SIGHUP"]
     },
     {
       "type": "lldb",
@@ -201,7 +283,7 @@
         "--splitting",
         "bun",
         "/Users/jarred/Code/bun-rsc/components/Message.tsx",
-        "/Users/jarred/Code/bun-rsc/components/Button.tsx",
+        "/Users/jarred/Code/bun-rsc/components/Button.tsx"
       ],
       "cwd": "/Users/jarred/Code/bun-rsc",
       "console": "internalConsole",

.vscode/settings.json

@@ -37,8 +37,6 @@
   "[yaml]": {
     "editor.formatOnSave": true
   },
-  "zig.beforeDebugCmd": "make build-unit ${file} ${filter} ${bin}",
-  "zig.testCmd": "make test ${file} ${filter} ${bin}",
   "[markdown]": {
     "editor.unicodeHighlight.ambiguousCharacters": false,
     "editor.unicodeHighlight.invisibleCharacters": false,
@@ -77,7 +75,9 @@
     "src/deps/lol-html": true,
     "src/deps/c-ares": true,
     "src/deps/tinycc": true,
-    "test/snippets/package-json-exports/_node_modules_copy": true
+    "src/deps/zstd": true,
+    "test/snippets/package-json-exports/_node_modules_copy": true,
+    "src/js/out": true
   },
   "C_Cpp.files.exclude": {
     "**/.vscode": true,
@@ -204,7 +204,18 @@
     "compare": "cpp",
     "concepts": "cpp",
     "typeindex": "cpp",
-    "__verbose_abort": "cpp"
+    "__verbose_abort": "cpp",
+    "__std_stream": "cpp",
+    "any": "cpp",
+    "charconv": "cpp",
+    "csignal": "cpp",
+    "format": "cpp",
+    "forward_list": "cpp",
+    "future": "cpp",
+    "regex": "cpp",
+    "span": "cpp",
+    "valarray": "cpp",
+    "codecvt": "cpp"
   },
   "cmake.configureOnOpen": false,
   "C_Cpp.errorSquiggles": "enabled",

CONTRIBUTING.md

@@ -59,7 +59,9 @@ The module loader is in [`src/bun.js/module_loader.zig`](src/bun.js/module_loade
 
 ### JavaScript Builtins
 
-JavaScript builtins are located in [`src/bun.js/builtins/*.js`](src/bun.js/builtins).
+TODO: update this with the new build process that uses TypeScript and `$` instead of `@`.
+
+JavaScript builtins are located in [`src/js/builtins/*.ts`](src/js/builtins).
 
 These files support a JavaScriptCore-only syntax for internal slots. `@` is used to access an internal slot. For example: `new @Array(123)` will create a new `Array` similar to `new Array(123)`, except if a library modifies the `Array` global, it will not affect the internal slot (`@Array`). These names must be allow-listed in `BunBuiltinNames.h` (though JavaScriptCore allowlists some names by default).
 

Dockerfile

@@ -10,7 +10,7 @@ ARG ARCH=x86_64
 ARG BUILD_MACHINE_ARCH=x86_64
 ARG TRIPLET=${ARCH}-linux-gnu
 ARG BUILDARCH=amd64
-ARG WEBKIT_TAG=feb9
+ARG WEBKIT_TAG=may20
 ARG ZIG_TAG=jul1
 ARG ZIG_VERSION="0.11.0-dev.2571+31738de28"
 ARG WEBKIT_BASENAME="bun-webkit-linux-$BUILDARCH"
@@ -503,6 +503,33 @@ ENV LIB_ICU_PATH=${WEBKIT_DIR}/lib
 
 RUN --mount=type=cache,target=/ccache cd $BUN_DIR && make sqlite
 
+FROM bun-base as zstd
+
+ARG DEBIAN_FRONTEND
+ARG GITHUB_WORKSPACE
+ARG ZIG_PATH
+# Directory extracts to "bun-webkit"
+ARG WEBKIT_DIR
+ARG BUN_RELEASE_DIR
+ARG BUN_DEPS_OUT_DIR
+ARG BUN_DIR
+
+ARG CPU_TARGET
+ENV CPU_TARGET=${CPU_TARGET}
+
+ENV CCACHE_DIR=/ccache
+
+COPY Makefile ${BUN_DIR}/Makefile
+COPY src/deps/zstd ${BUN_DIR}/src/deps/zstd
+COPY .prettierrc.cjs ${BUN_DIR}/.prettierrc.cjs
+
+WORKDIR $BUN_DIR
+
+ENV JSC_BASE_DIR=${WEBKIT_DIR}
+ENV LIB_ICU_PATH=${WEBKIT_DIR}/lib
+
+RUN --mount=type=cache,target=/ccache cd $BUN_DIR && make zstd
+
 FROM scratch as build_release_cpp
 
 COPY --from=compile_cpp /tmp/*.o /
@@ -535,6 +562,7 @@ COPY --from=lolhtml ${BUN_DEPS_OUT_DIR}/*.a ${BUN_DEPS_OUT_DIR}/
 COPY --from=mimalloc ${BUN_DEPS_OUT_DIR}/*.o ${BUN_DEPS_OUT_DIR}/
 COPY --from=picohttp ${BUN_DEPS_OUT_DIR}/*.o ${BUN_DEPS_OUT_DIR}/
 COPY --from=sqlite ${BUN_DEPS_OUT_DIR}/*.o  ${BUN_DEPS_OUT_DIR}/
+COPY --from=zstd ${BUN_DEPS_OUT_DIR}/*.a  ${BUN_DEPS_OUT_DIR}/
 COPY --from=tinycc ${BUN_DEPS_OUT_DIR}/*.a ${BUN_DEPS_OUT_DIR}/
 COPY --from=uws ${BUN_DEPS_OUT_DIR}/*.a ${BUN_DEPS_OUT_DIR}/
 COPY --from=uws ${BUN_DEPS_OUT_DIR}/*.o ${BUN_DEPS_OUT_DIR}/

Makefile

@@ -20,6 +20,7 @@ CPU_TARGET ?= native
 MARCH_NATIVE = -mtune=$(CPU_TARGET)
 NATIVE_OR_OLD_MARCH =
 
+MMD_IF_LOCAL = 
 DEFAULT_MIN_MACOS_VERSION=
 ARCH_NAME :=
 DOCKER_BUILDARCH =
@@ -41,8 +42,14 @@ endif
 MIN_MACOS_VERSION ?= $(DEFAULT_MIN_MACOS_VERSION)
 BUN_BASE_VERSION = 0.6
 
+CI ?= false
+
 AR=
 
+ifeq ($(CI), false)
+	MMD_IF_LOCAL = -MMD
+endif
+
 BUN_OR_NODE = $(shell which bun 2>/dev/null || which node 2>/dev/null)
 
 CXX_VERSION=c++2a
@@ -77,6 +84,7 @@ ZIG ?= $(shell which zig 2>/dev/null || echo -e "error: Missing zig. Please make
 # so if that's resolved, it won't build for C++
 REAL_CC = $(shell which clang-15 2>/dev/null || which clang 2>/dev/null)
 REAL_CXX = $(shell which clang++-15 2>/dev/null || which clang++ 2>/dev/null)
+CLANG_FORMAT = $(shell which clang-format-15 2>/dev/null || which clang-format 2>/dev/null)
 
 CC = $(REAL_CC)
 CXX = $(REAL_CXX)
@@ -173,7 +181,7 @@ AR = $(shell which llvm-ar-15 2>/dev/null || which llvm-ar 2>/dev/null || which
 endif
 
 OPTIMIZATION_LEVEL=-O3 $(MARCH_NATIVE)
-DEBUG_OPTIMIZATION_LEVEL= -O1 $(MARCH_NATIVE)
+DEBUG_OPTIMIZATION_LEVEL= -O1 $(MARCH_NATIVE) -gdwarf-4
 CFLAGS_WITHOUT_MARCH = $(MACOS_MIN_FLAG) $(OPTIMIZATION_LEVEL) -fno-exceptions -fvisibility=hidden -fvisibility-inlines-hidden
 BUN_CFLAGS = $(MACOS_MIN_FLAG) $(MARCH_NATIVE)  $(OPTIMIZATION_LEVEL) -fno-exceptions -fvisibility=hidden -fvisibility-inlines-hidden
 BUN_TMP_DIR := /tmp/make-bun
@@ -285,14 +293,14 @@ SRC_WEBCORE_FILES := $(wildcard $(SRC_DIR)/webcore/*.cpp)
 SRC_SQLITE_FILES := $(wildcard $(SRC_DIR)/sqlite/*.cpp)
 SRC_NODE_OS_FILES := $(wildcard $(SRC_DIR)/node_os/*.cpp)
 SRC_IO_FILES := $(wildcard src/io/*.cpp)
-SRC_BUILTINS_FILES := $(wildcard  src/bun.js/builtins/*.cpp)
+SRC_BUILTINS_FILES := $(wildcard  src/js/out/*.cpp)
 SRC_WEBCRYPTO_FILES := $(wildcard $(SRC_DIR)/webcrypto/*.cpp)
 
 OBJ_FILES := $(patsubst $(SRC_DIR)/%.cpp,$(OBJ_DIR)/%.o,$(SRC_FILES))
 WEBCORE_OBJ_FILES := $(patsubst $(SRC_DIR)/webcore/%.cpp,$(OBJ_DIR)/%.o,$(SRC_WEBCORE_FILES))
 SQLITE_OBJ_FILES := $(patsubst $(SRC_DIR)/sqlite/%.cpp,$(OBJ_DIR)/%.o,$(SRC_SQLITE_FILES))
 NODE_OS_OBJ_FILES := $(patsubst $(SRC_DIR)/node_os/%.cpp,$(OBJ_DIR)/%.o,$(SRC_NODE_OS_FILES))
-BUILTINS_OBJ_FILES := $(patsubst src/bun.js/builtins/%.cpp,$(OBJ_DIR)/%.o,$(SRC_BUILTINS_FILES))
+BUILTINS_OBJ_FILES := $(patsubst src/js/out/%.cpp,$(OBJ_DIR)/%.o,$(SRC_BUILTINS_FILES))
 IO_FILES := $(patsubst src/io/%.cpp,$(OBJ_DIR)/%.o,$(SRC_IO_FILES))
 MODULES_OBJ_FILES := $(patsubst $(MODULES_DIR)/%.cpp,$(OBJ_DIR)/%.o,$(MODULES_FILES))
 WEBCRYPTO_OBJ_FILES := $(patsubst $(SRC_DIR)/webcrypto/%.cpp,$(OBJ_DIR)/%.o,$(SRC_WEBCRYPTO_FILES))
@@ -301,7 +309,7 @@ DEBUG_OBJ_FILES := $(patsubst $(SRC_DIR)/%.cpp,$(DEBUG_OBJ_DIR)/%.o,$(SRC_FILES)
 DEBUG_WEBCORE_OBJ_FILES := $(patsubst $(SRC_DIR)/webcore/%.cpp,$(DEBUG_OBJ_DIR)/%.o,$(SRC_WEBCORE_FILES))
 DEBUG_SQLITE_OBJ_FILES := $(patsubst $(SRC_DIR)/sqlite/%.cpp,$(DEBUG_OBJ_DIR)/%.o,$(SRC_SQLITE_FILES))
 DEBUG_NODE_OS_OBJ_FILES := $(patsubst $(SRC_DIR)/node_os/%.cpp,$(DEBUG_OBJ_DIR)/%.o,$(SRC_NODE_OS_FILES))
-DEBUG_BUILTINS_OBJ_FILES := $(patsubst src/bun.js/builtins/%.cpp,$(DEBUG_OBJ_DIR)/%.o,$(SRC_BUILTINS_FILES))
+DEBUG_BUILTINS_OBJ_FILES := $(patsubst src/js/out/%.cpp,$(DEBUG_OBJ_DIR)/%.o,$(SRC_BUILTINS_FILES))
 DEBUG_IO_FILES := $(patsubst src/io/%.cpp,$(DEBUG_OBJ_DIR)/%.o,$(SRC_IO_FILES))
 DEBUG_MODULES_OBJ_FILES := $(patsubst $(MODULES_DIR)/%.cpp,$(DEBUG_OBJ_DIR)/%.o,$(MODULES_FILES))
 DEBUG_WEBCRYPTO_OBJ_FILES := $(patsubst $(SRC_DIR)/webcrypto/%.cpp, $(DEBUG_OBJ_DIR)/%.o, $(SRC_WEBCRYPTO_FILES))
@@ -322,12 +330,12 @@ ALL_JSC_INCLUDE_DIRS := -I$(WEBKIT_RELEASE_DIR)/WTF/Headers \
 		-I$(WEBKIT_RELEASE_DIR)/WTF/PrivateHeaders
 
 SHARED_INCLUDE_DIR = -I$(realpath src/bun.js/bindings)/ \
-		-I$(realpath src/bun.js/builtins/) \
+		-I$(realpath src/js/builtins/) \
+		-I$(realpath src/js/out/) \
 		-I$(realpath src/bun.js/bindings) \
 		-I$(realpath src/bun.js/bindings/webcore) \
 		-I$(realpath src/bun.js/bindings/webcrypto) \
 		-I$(realpath src/bun.js/bindings/sqlite) \
-		-I$(realpath src/bun.js/builtins/cpp) \
 		-I$(realpath src/bun.js/bindings/node_os) \
 		-I$(realpath src/bun.js/modules) \
 		-I$(JSC_INCLUDE_DIR)
@@ -344,7 +352,7 @@ LINUX_INCLUDE_DIRS := $(ALL_JSC_INCLUDE_DIRS) \
 UWS_INCLUDE_DIR := -I$(BUN_DEPS_DIR)/uws/uSockets/src -I$(BUN_DEPS_DIR)/uws/src -I$(BUN_DEPS_DIR)
 
 
-INCLUDE_DIRS := $(UWS_INCLUDE_DIR) -I$(BUN_DEPS_DIR)/mimalloc/include -Isrc/napi -I$(BUN_DEPS_DIR)/boringssl/include -I$(BUN_DEPS_DIR)/c-ares/include
+INCLUDE_DIRS := $(UWS_INCLUDE_DIR) -I$(BUN_DEPS_DIR)/mimalloc/include -I$(BUN_DEPS_DIR)/zstd/include -Isrc/napi -I$(BUN_DEPS_DIR)/boringssl/include -I$(BUN_DEPS_DIR)/c-ares/include
 
 
 ifeq ($(OS_NAME),linux)
@@ -452,6 +460,7 @@ ARCHIVE_FILES_WITHOUT_LIBCRYPTO = $(MINIMUM_ARCHIVE_FILES) \
 		-ltcc \
 		-lusockets \
 		-lcares \
+		-lzstd \
 		$(BUN_DEPS_OUT_DIR)/libuwsockets.o
 
 ARCHIVE_FILES = $(ARCHIVE_FILES_WITHOUT_LIBCRYPTO)
@@ -528,9 +537,6 @@ get-%  : ; @echo $($*)
 print-version:
 	@echo $(PACKAGE_JSON_VERSION)
 
-
-
-
 # Prevent dependency on libtcc1 so it doesn't do filesystem lookups
 TINYCC_CFLAGS= -DTCC_LIBTCC1=\"\0\"
 
@@ -548,24 +554,12 @@ tinycc:
 PYTHON=$(shell which python 2>/dev/null || which python3 2>/dev/null || which python2 2>/dev/null)
 
 .PHONY: builtins
-builtins: ## to generate builtins
-	@if [ -z "$(WEBKIT_DIR)" ] || [ ! -d "$(WEBKIT_DIR)/Source" ]; then echo "WebKit is not cloned. Please run make init-submodules"; exit 1; fi
-	rm -f src/bun.js/bindings/*Builtin*.cpp src/bun.js/bindings/*Builtin*.h src/bun.js/bindings/*Builtin*.cpp
-	rm -rf src/bun.js/builtins/cpp
-	mkdir -p src/bun.js/builtins/cpp
-	$(PYTHON) $(realpath $(WEBKIT_DIR)/Source/JavaScriptCore/Scripts/generate-js-builtins.py) -i $(realpath src)/bun.js/builtins/js  -o $(realpath src)/bun.js/builtins/cpp --framework WebCore --force
-	$(PYTHON) $(realpath $(WEBKIT_DIR)/Source/JavaScriptCore/Scripts/generate-js-builtins.py) -i $(realpath src)/bun.js/builtins/js  -o $(realpath src)/bun.js/builtins/cpp --framework WebCore --wrappers-only
-	rm -rf /tmp/1.h src/bun.js/builtins/cpp/WebCoreJSBuiltinInternals.h.1
-	echo -e '// clang-format off\nnamespace Zig { class GlobalObject; }\n#include "root.h"\n' >> /tmp/1.h
-	cat /tmp/1.h  src/bun.js/builtins/cpp/WebCoreJSBuiltinInternals.h > src/bun.js/builtins/cpp/WebCoreJSBuiltinInternals.h.1
-	mv src/bun.js/builtins/cpp/WebCoreJSBuiltinInternals.h.1 src/bun.js/builtins/cpp/WebCoreJSBuiltinInternals.h
-	rm -rf /tmp/1.h src/bun.js/builtins/cpp/WebCoreJSBuiltinInternals.h.1
-	echo -e '// clang-format off\nnamespace Zig { class GlobalObject; }\n#include "root.h"\n' >> /tmp/1.h
-	cat /tmp/1.h  src/bun.js/builtins/cpp/WebCoreJSBuiltinInternals.cpp > src/bun.js/builtins/cpp/WebCoreJSBuiltinInternals.cpp.1
-	mv src/bun.js/builtins/cpp/WebCoreJSBuiltinInternals.cpp.1 src/bun.js/builtins/cpp/WebCoreJSBuiltinInternals.cpp
-	$(SED) -i -e 's/class JSDOMGlobalObject/using JSDOMGlobalObject = Zig::GlobalObject/' src/bun.js/builtins/cpp/WebCoreJSBuiltinInternals.h
-	# this is the one we actually build
-	mv src/bun.js/builtins/cpp/*JSBuiltin*.cpp src/bun.js/builtins
+builtins:
+	NODE_ENV=production bun src/js/builtins/codegen/index.ts --minify
+
+.PHONY: esm
+esm:
+	NODE_ENV=production bun src/js/build-esm.ts
 
 .PHONY: generate-builtins
 generate-builtins: builtins
@@ -636,6 +630,9 @@ compile-ffi-test:
 
 sqlite:
 
+.PHONY: zstd
+zstd:
+	cd $(BUN_DEPS_DIR)/zstd && rm -rf build-cmake-debug && cmake $(CMAKE_FLAGS) -DZSTD_BUILD_STATIC=ON -B build-cmake-debug -S build/cmake -G Ninja && ninja -C build-cmake-debug && cp build-cmake-debug/lib/libzstd.a $(BUN_DEPS_OUT_DIR)/libzstd.a
 
 .PHONY: libarchive
 libarchive:
@@ -680,6 +677,7 @@ require:
 	@which aclocal > /dev/null || (echo -e  "ERROR: automake is required. Install with:\n\n    $(POSIX_PKG_MANAGER) install automake"; exit 1)
 	@which $(LIBTOOL) > /dev/null || (echo -e "ERROR: libtool is required. Install with:\n\n    $(POSIX_PKG_MANAGER) install libtool"; exit 1)
 	@which ninja > /dev/null || (echo -e "ERROR: Ninja is required. Install with:\n\n    $(POSIX_PKG_MANAGER) install $(PKGNAME_NINJA)"; exit 1)
+	@which pkg-config > /dev/null || (echo -e "ERROR: pkg-config is required. Install with:\n\n    $(POSIX_PKG_MANAGER) install pkg-config"; exit 1)
 	@echo "You have the dependencies installed! Woo"
 
 init-submodules:
@@ -689,6 +687,10 @@ init-submodules:
 build-obj:
 	$(ZIG) build obj -Doptimize=ReleaseFast -Dcpu="$(CPU_TARGET)"
 
+.PHONY: build-obj-small
+build-obj-small:
+	$(ZIG) build obj -Doptimize=ReleaseSmall -Dcpu="$(CPU_TARGET)"
+
 .PHONY: dev-build-obj-wasm
 dev-build-obj-wasm:
 	$(ZIG) build bun-wasm -Dtarget=wasm32-freestanding
@@ -767,10 +769,10 @@ sign-macos-aarch64:
 	gon sign.macos-aarch64.json
 
 cls:
-	@echo "\n\n---\n\n"
+	@echo -e "\n\n---\n\n"
 
 jsc-check:
-	@ls $(JSC_BASE_DIR)  >/dev/null 2>&1 || (echo "Failed to access WebKit build. Please compile the WebKit submodule using the Dockerfile at $(shell pwd)/src/javascript/WebKit/Dockerfile and then copy from /output in the Docker container to $(JSC_BASE_DIR). You can override the directory via JSC_BASE_DIR. \n\n 	DOCKER_BUILDKIT=1 docker build -t bun-webkit $(shell pwd)/src/bun.js/WebKit -f $(shell pwd)/src/bun.js/WebKit/Dockerfile --progress=plain\n\n 	docker container create bun-webkit\n\n 	# Get the container ID\n	docker container ls\n\n 	docker cp DOCKER_CONTAINER_ID_YOU_JUST_FOUND:/output $(JSC_BASE_DIR)" && exit 1)
+	@ls $(JSC_BASE_DIR)  >/dev/null 2>&1 || (echo -e "Failed to access WebKit build. Please compile the WebKit submodule using the Dockerfile at $(shell pwd)/src/javascript/WebKit/Dockerfile and then copy from /output in the Docker container to $(JSC_BASE_DIR). You can override the directory via JSC_BASE_DIR. \n\n 	DOCKER_BUILDKIT=1 docker build -t bun-webkit $(shell pwd)/src/bun.js/WebKit -f $(shell pwd)/src/bun.js/WebKit/Dockerfile --progress=plain\n\n 	docker container create bun-webkit\n\n 	# Get the container ID\n	docker container ls\n\n 	docker cp DOCKER_CONTAINER_ID_YOU_JUST_FOUND:/output $(JSC_BASE_DIR)" && exit 1)
 	@ls $(JSC_INCLUDE_DIR)  >/dev/null 2>&1 || (echo "Failed to access WebKit include directory at $(JSC_INCLUDE_DIR)." && exit 1)
 	@ls $(JSC_LIB)  >/dev/null 2>&1 || (echo "Failed to access WebKit lib directory at $(JSC_LIB)." && exit 1)
 
@@ -793,7 +795,7 @@ release-safe: prerelease release-safe-only
 
 .PHONY: fmt-cpp
 fmt-cpp:
-	cd src/bun.js/bindings && clang-format *.cpp *.h -i
+	cd src/bun.js/bindings && $(CLANG_FORMAT) *.cpp *.h -i
 
 .PHONY: fmt-zig
 fmt-zig:
@@ -908,7 +910,6 @@ bun-codesign-release-local:
 bun-codesign-release-local-debug:
 
 
-
 .PHONY: jsc
 jsc: jsc-build jsc-copy-headers jsc-bindings
 .PHONY: jsc-build
@@ -920,7 +921,6 @@ jsc-bindings: headers bindings
 clone-submodules:
 	git -c submodule."src/bun.js/WebKit".update=none submodule update --init --recursive --depth=1 --progress
 
-CLANG_FORMAT := $(shell command -v clang-format 2> /dev/null)
 
 .PHONY: headers
 headers:
@@ -1085,7 +1085,7 @@ dev-obj-linux:
 	$(ZIG) build obj -Dtarget=x86_64-linux-gnu -Dcpu="$(CPU_TARGET)"
 
 .PHONY: dev
-dev: mkdir-dev dev-obj bun-link-lld-debug
+dev: mkdir-dev esm dev-obj bun-link-lld-debug
 
 mkdir-dev:
 	mkdir -p $(DEBUG_PACKAGE_DIR)
@@ -1115,7 +1115,6 @@ jsc-copy-headers:
 	cp $(WEBKIT_DIR)/Source/JavaScriptCore/bytecode/ObjectPropertyConditionSet.h $(WEBKIT_RELEASE_DIR)/JavaScriptCore/PrivateHeaders/JavaScriptCore/ObjectPropertyConditionSet.h
 	cp $(WEBKIT_DIR)/Source/JavaScriptCore/bytecode/PolyProtoAccessChain.h $(WEBKIT_RELEASE_DIR)/JavaScriptCore/PrivateHeaders/JavaScriptCore/PolyProtoAccessChain.h
 	cp $(WEBKIT_DIR)/Source/JavaScriptCore/bytecode/InlineCacheCompiler.h $(WEBKIT_RELEASE_DIR)/JavaScriptCore/PrivateHeaders/JavaScriptCore/InlineCacheCompiler.h
-	cp $(WEBKIT_DIR)/Source/JavaScriptCore/bytecode/PutKind.h $(WEBKIT_RELEASE_DIR)/JavaScriptCore/PrivateHeaders/JavaScriptCore/PutKind.h
 	cp $(WEBKIT_DIR)/Source/JavaScriptCore/bytecode/StructureStubClearingWatchpoint.h $(WEBKIT_RELEASE_DIR)/JavaScriptCore/PrivateHeaders/JavaScriptCore/StructureStubClearingWatchpoint.h
 	cp $(WEBKIT_DIR)/Source/JavaScriptCore/bytecode/AdaptiveInferredPropertyValueWatchpointBase.h $(WEBKIT_RELEASE_DIR)/JavaScriptCore/PrivateHeaders/JavaScriptCore/AdaptiveInferredPropertyValueWatchpointBase.h
 	cp $(WEBKIT_DIR)/Source/JavaScriptCore/bytecode/StubInfoSummary.h $(WEBKIT_RELEASE_DIR)/JavaScriptCore/PrivateHeaders/JavaScriptCore/StubInfoSummary.h
@@ -1149,6 +1148,9 @@ jsc-copy-headers:
 	cp $(WEBKIT_DIR)/Source/JavaScriptCore/runtime/AsyncFunctionPrototype.h $(WEBKIT_RELEASE_DIR)/JavaScriptCore/PrivateHeaders/JavaScriptCore/AsyncFunctionPrototype.h
 	cp $(WEBKIT_DIR)/Source/JavaScriptCore/runtime/SymbolObject.h $(WEBKIT_RELEASE_DIR)/JavaScriptCore/PrivateHeaders/JavaScriptCore/SymbolObject.h
 	cp $(WEBKIT_DIR)/Source/JavaScriptCore/runtime/JSGenerator.h $(WEBKIT_RELEASE_DIR)/JavaScriptCore/PrivateHeaders/JavaScriptCore/JSGenerator.h
+	cp $(WEBKIT_DIR)/Source/JavaScriptCore/bytecode/UnlinkedFunctionCodeBlock.h $(WEBKIT_RELEASE_DIR)/JavaScriptCore/PrivateHeaders/JavaScriptCore/UnlinkedFunctionCodeBlock.h
+	cp $(WEBKIT_DIR)/Source/JavaScriptCore/runtime/AggregateError.h $(WEBKIT_RELEASE_DIR)/JavaScriptCore/PrivateHeaders/JavaScriptCore/AggregateError.h
+	cp $(WEBKIT_DIR)/Source/JavaScriptCore/API/JSWeakValue.h  $(WEBKIT_RELEASE_DIR)/JavaScriptCore/PrivateHeaders/JavaScriptCore/JSWeakValue.h
 	find $(WEBKIT_RELEASE_DIR)/JavaScriptCore/Headers/JavaScriptCore/ -name "*.h" -exec cp {} $(WEBKIT_RELEASE_DIR)/JavaScriptCore/PrivateHeaders/JavaScriptCore/ \;
 
 # This is a workaround for a JSC bug that impacts aarch64
@@ -1298,7 +1300,7 @@ jsc-bindings-mac: bindings
 MIMALLOC_VALGRIND_ENABLED_FLAG =
 
 ifeq ($(OS_NAME),linux)
-	MIMALLOC_VALGRIND_ENABLED_FLAG = -DMI_VALGRIND=ON
+	MIMALLOC_VALGRIND_ENABLED_FLAG = -DMI_TRACK_VALGRIND=ON
 endif
 
 
@@ -1381,6 +1383,19 @@ bun-relink-copy:
 	mkdir -p $(PACKAGE_DIR)
 	cp $(BUN_DEPLOY_DIR).o $(BUN_RELEASE_BIN).o
 
+.PHONY: bun-link-lld-profile profile
+bun-link-lld-profile:
+	$(CXX) $(BUN_LLD_FLAGS) $(SYMBOLS) -g -gdwarf-4 -fno-omit-frame-pointer \
+		$(BUN_RELEASE_BIN).o \
+		-o $(BUN_RELEASE_BIN) \
+		-W \
+		$(OPTIMIZATION_LEVEL) $(RELEASE_FLAGS)
+	rm -rf $(BUN_RELEASE_BIN).dSYM
+	cp $(BUN_RELEASE_BIN) $(BUN_RELEASE_BIN)-profile
+	@rm -f $(BUN_RELEASE_BIN).o.o # workaround for https://github.com/ziglang/zig/issues/14080
+
+build-profile: build-obj bun-link-lld-profile bun-codesign-release-local
+
 bun-link-lld-release:
 	$(CXX) $(BUN_LLD_FLAGS) $(SYMBOLS) \
 		$(BUN_RELEASE_BIN).o \
@@ -1431,11 +1446,11 @@ wasm-return1:
 generate-classes:
 	bun src/bun.js/scripts/generate-classes.ts
 	$(ZIG) fmt src/bun.js/bindings/generated_classes.zig
-	clang-format -i src/bun.js/bindings/ZigGeneratedClasses.h src/bun.js/bindings/ZigGeneratedClasses.cpp
+	$(CLANG_FORMAT) -i src/bun.js/bindings/ZigGeneratedClasses.h src/bun.js/bindings/ZigGeneratedClasses.cpp
 
 generate-sink:
 	bun src/bun.js/scripts/generate-jssink.js
-	clang-format -i  src/bun.js/bindings/JSSink.cpp  src/bun.js/bindings/JSSink.h
+	$(CLANG_FORMAT) -i  src/bun.js/bindings/JSSink.cpp  src/bun.js/bindings/JSSink.h
 	$(WEBKIT_DIR)/Source/JavaScriptCore/create_hash_table src/bun.js/bindings/JSSink.cpp > src/bun.js/bindings/JSSinkLookupTable.h
 	$(SED) -i -e 's/#include "Lookup.h"//' src/bun.js/bindings/JSSinkLookupTable.h
 	$(SED) -i -e 's/namespace JSC {//' src/bun.js/bindings/JSSinkLookupTable.h
@@ -1459,7 +1474,7 @@ $(OBJ_DIR)/%.o: $(SRC_DIR)/%.cpp
 	$(CXX_WITH_CCACHE) $(CLANG_FLAGS) $(UWS_INCLUDE) \
 		$(MACOS_MIN_FLAG) \
 		$(OPTIMIZATION_LEVEL) \
-		-MMD \
+		${MMD_IF_LOCAL} \
 		-fno-exceptions \
 		-fno-rtti \
 		-ferror-limit=1000 \
@@ -1470,7 +1485,7 @@ $(OBJ_DIR)/%.o: src/bun.js/modules/%.cpp
 	$(CXX_WITH_CCACHE) $(CLANG_FLAGS) $(UWS_INCLUDE) \
 		$(MACOS_MIN_FLAG) \
 		$(OPTIMIZATION_LEVEL) \
-		-MMD \
+		${MMD_IF_LOCAL} \
 		-fno-exceptions \
 		-fno-rtti \
 		-ferror-limit=1000 \
@@ -1481,7 +1496,7 @@ $(OBJ_DIR)/%.o: $(SRC_DIR)/webcore/%.cpp
 	$(CXX_WITH_CCACHE) $(CLANG_FLAGS) \
 		$(MACOS_MIN_FLAG) \
 		$(OPTIMIZATION_LEVEL) \
-		-MMD \
+		${MMD_IF_LOCAL} \
 		-fno-exceptions \
 		-fno-rtti \
 		-ferror-limit=1000 \
@@ -1492,7 +1507,7 @@ $(OBJ_DIR)/%.o: $(SRC_DIR)/sqlite/%.cpp
 	$(CXX_WITH_CCACHE) $(CLANG_FLAGS) \
 		$(MACOS_MIN_FLAG) \
 		$(OPTIMIZATION_LEVEL) \
-		-MMD \
+		${MMD_IF_LOCAL} \
 		-fno-exceptions \
 		-fno-rtti \
 		-ferror-limit=1000 \
@@ -1503,7 +1518,7 @@ $(OBJ_DIR)/%.o: src/io/%.cpp
 	$(CXX_WITH_CCACHE) $(CLANG_FLAGS) \
 		$(MACOS_MIN_FLAG) \
 		$(OPTIMIZATION_LEVEL) \
-		-MMD \
+		${MMD_IF_LOCAL} \
 		-fno-exceptions \
 		-fno-rtti \
 		-ferror-limit=1000 \
@@ -1514,18 +1529,18 @@ $(OBJ_DIR)/%.o: $(SRC_DIR)/node_os/%.cpp
 	$(CXX_WITH_CCACHE) $(CLANG_FLAGS) \
 		$(MACOS_MIN_FLAG) \
 		$(OPTIMIZATION_LEVEL) \
-		-MMD \
+		${MMD_IF_LOCAL} \
 		-fno-exceptions \
 		-fno-rtti \
 		-ferror-limit=1000 \
 		$(EMIT_LLVM) \
 		-c -o $@ $<
 
-$(OBJ_DIR)/%.o: src/bun.js/builtins/%.cpp
+$(OBJ_DIR)/%.o: src/js/out/%.cpp
 	$(CXX_WITH_CCACHE) $(CLANG_FLAGS) \
 		$(MACOS_MIN_FLAG) \
 		$(OPTIMIZATION_LEVEL) \
-		-MMD \
+		${MMD_IF_LOCAL} \
 		-fno-exceptions \
 		-fno-rtti \
 		-ferror-limit=1000 \
@@ -1537,7 +1552,7 @@ $(OBJ_DIR)/%.o: src/bun.js/bindings/webcrypto/%.cpp
 	$(CXX_WITH_CCACHE) $(CLANG_FLAGS) \
 		$(MACOS_MIN_FLAG) \
 		$(OPTIMIZATION_LEVEL) \
-		-MMD \
+		${MMD_IF_LOCAL} \
 		-fno-exceptions \
 		-fno-rtti \
 		-ferror-limit=1000 \
@@ -1551,7 +1566,7 @@ $(DEBUG_OBJ_DIR)/%.o: $(SRC_DIR)/%.cpp
 	$(CXX_WITH_CCACHE) $(CLANG_FLAGS) $(UWS_INCLUDE) \
 		$(MACOS_MIN_FLAG) \
 		$(DEBUG_OPTIMIZATION_LEVEL) \
-		-MMD \
+		${MMD_IF_LOCAL} \
 		-fno-exceptions \
 		-fno-rtti \
 		-ferror-limit=1000 \
@@ -1566,7 +1581,7 @@ $(DEBUG_OBJ_DIR)/%.o: $(SRC_DIR)/webcore/%.cpp
 	$(CXX_WITH_CCACHE) $(CLANG_FLAGS) \
 		$(MACOS_MIN_FLAG) \
 		$(DEBUG_OPTIMIZATION_LEVEL) \
-		-MMD \
+		${MMD_IF_LOCAL} \
 		-fno-exceptions \
 		-fno-rtti \
 		-ferror-limit=1000 \
@@ -1579,7 +1594,7 @@ $(DEBUG_OBJ_DIR)/%.o: src/io/%.cpp
 	$(CXX_WITH_CCACHE) $(CLANG_FLAGS) \
 		$(MACOS_MIN_FLAG) \
 		$(DEBUG_OPTIMIZATION_LEVEL) \
-		-MMD \
+		${MMD_IF_LOCAL} \
 		-fno-exceptions \
 		-fno-rtti \
 		-ferror-limit=1000 \
@@ -1595,7 +1610,7 @@ $(DEBUG_OBJ_DIR)/%.o: $(SRC_DIR)/sqlite/%.cpp
 	$(CXX_WITH_CCACHE) $(CLANG_FLAGS) \
 		$(MACOS_MIN_FLAG) \
 		$(DEBUG_OPTIMIZATION_LEVEL) \
-		-MMD \
+		${MMD_IF_LOCAL} \
 		-fno-exceptions \
 		-fno-rtti \
 		-ferror-limit=1000 \
@@ -1610,7 +1625,7 @@ $(DEBUG_OBJ_DIR)/%.o: $(SRC_DIR)/node_os/%.cpp
 	$(CXX_WITH_CCACHE) $(CLANG_FLAGS) \
 		$(MACOS_MIN_FLAG) \
 		$(DEBUG_OPTIMIZATION_LEVEL) \
-		-MMD \
+		${MMD_IF_LOCAL} \
 		-fno-exceptions \
 		-fno-rtti \
 		-ferror-limit=1000 \
@@ -1620,12 +1635,12 @@ $(DEBUG_OBJ_DIR)/%.o: $(SRC_DIR)/node_os/%.cpp
 
 # $(DEBUG_OBJ_DIR) is not included here because it breaks
 # detecting if a file needs to be rebuilt
-.PHONY: src/bun.js/builtins/%.cpp
-$(DEBUG_OBJ_DIR)/%.o: src/bun.js/builtins/%.cpp
+.PHONY: src/js/out/builtins/%.cpp
+$(DEBUG_OBJ_DIR)/%.o: src/js/out/%.cpp
 	$(CXX_WITH_CCACHE) $(CLANG_FLAGS) \
 		$(MACOS_MIN_FLAG) \
 		$(DEBUG_OPTIMIZATION_LEVEL) \
-		-MMD \
+		${MMD_IF_LOCAL} \
 		-fno-exceptions \
 		-fno-rtti \
 		-ferror-limit=1000 \
@@ -1638,7 +1653,7 @@ $(DEBUG_OBJ_DIR)/%.o: src/bun.js/modules/%.cpp
 	$(CXX_WITH_CCACHE) $(CLANG_FLAGS) \
 		$(MACOS_MIN_FLAG) \
 		$(DEBUG_OPTIMIZATION_LEVEL) \
-		-MMD \
+		${MMD_IF_LOCAL} \
 		-fno-exceptions \
 		-fno-rtti \
 		-ferror-limit=1000 \
@@ -1652,7 +1667,7 @@ $(DEBUG_OBJ_DIR)/%.o: src/bun.js/bindings/webcrypto/%.cpp
 	$(CXX_WITH_CCACHE) $(CLANG_FLAGS) \
 		$(MACOS_MIN_FLAG) \
 		$(DEBUG_OPTIMIZATION_LEVEL) \
-		-MMD \
+		${MMD_IF_LOCAL} \
 		-fno-exceptions \
 		-I$(SRC_DIR) \
 		-fno-rtti \
@@ -1827,8 +1842,24 @@ copy-to-bun-release-dir-bin:
 PACKAGE_MAP = --pkg-begin async_io $(BUN_DIR)/src/io/io_darwin.zig --pkg-begin bun $(BUN_DIR)/src/bun_redirect.zig --pkg-end --pkg-end --pkg-begin javascript_core $(BUN_DIR)/src/jsc.zig --pkg-begin bun $(BUN_DIR)/src/bun_redirect.zig --pkg-end --pkg-end --pkg-begin bun $(BUN_DIR)/src/bun_redirect.zig --pkg-end
 
 
+.PHONY: cold-jsc-start
+cold-jsc-start:
+	$(CXX_WITH_CCACHE) $(CLANG_FLAGS) \
+		$(MACOS_MIN_FLAG) \
+		$(OPTIMIZATION_LEVEL) \
+		${MMD_IF_LOCAL} \
+		-fno-exceptions \
+		-fno-rtti \
+		-ferror-limit=1000 \
+		$(LIBICONV_PATH) \
+		$(DEFAULT_LINKER_FLAGS) \
+		$(PLATFORM_LINKER_FLAGS) \
+		$(ICU_FLAGS) \
+		$(JSC_FILES) \
+		misctools/cold-jsc-start.cpp -o cold-jsc-start
+
 .PHONY: vendor-without-npm
-vendor-without-npm: node-fallbacks runtime_js fallback_decoder bun_error mimalloc picohttp zlib boringssl libarchive lolhtml sqlite usockets uws tinycc c-ares
+vendor-without-npm: node-fallbacks runtime_js fallback_decoder bun_error mimalloc picohttp zlib boringssl libarchive lolhtml sqlite usockets uws tinycc c-ares zstd
 
 .PHONY: vendor-without-check
 vendor-without-check: npm-install vendor-without-npm
@@ -1848,7 +1879,7 @@ regenerate-bindings:
 	@make bindings -j$(CPU_COUNT)
 
 .PHONY: setup
-setup: vendor-dev builtins identifier-cache clean-bindings
+setup: vendor-dev identifier-cache clean-bindings
 	make jsc-check
 	make bindings -j$(CPU_COUNT)
 	@echo ""

README.md

@@ -48,7 +48,7 @@ bunx cowsay 'Hello, world!'   # execute a package
 Bun supports Linux (x64 & arm64) and macOS (x64 & Apple Silicon).
 
 > **Linux users** — Kernel version 5.6 or higher is strongly recommended, but the minimum is 5.1.
-> 
+>
 > **Windows users** — Bun does not currently provide a native Windows build. We're working on this; progress can be tracked at [this issue](https://github.com/oven-sh/bun/issues/43). In the meantime, use one of the installation methods below for Windows Subsystem for Linux.
 
 ```sh
@@ -67,7 +67,6 @@ docker pull oven/bun
 docker run --rm --init --ulimit memlock=-1:-1 oven/bun
 ```
 
-
 ### Upgrade
 
 To upgrade to the latest version of Bun, run:
@@ -100,7 +99,7 @@ bun upgrade --canary
   - [Runtime](https://bun.sh/docs/runtime/index)
   - [Module resolution](https://bun.sh/docs/runtime/modules)
   - [Hot & live reloading](https://bun.sh/docs/runtime/hot)
-  - [Plugins](https://bun.sh/docs/runtime/plugins)
+  - [Plugins](https://bun.sh/docs/bundler/plugins)
 - Ecosystem
   - [Node.js](https://bun.sh/docs/ecosystem/nodejs)
   - [TypeScript](https://bun.sh/docs/ecosystem/typescript)
@@ -127,7 +126,6 @@ bun upgrade --canary
   - [DNS](https://bun.sh/docs/api/dns)
   - [Node-API](https://bun.sh/docs/api/node-api)
 
-
 ## Contributing
 
 Refer to the [Project > Development](https://bun.sh/docs/project/development) guide to start contributing to Bun.

bench/bundle/.gitignore

@@ -0,0 +1,171 @@
+# Based on https://raw.githubusercontent.com/github/gitignore/main/Node.gitignore
+
+# Logs
+
+logs
+_.log
+npm-debug.log_
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+.pnpm-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+
+report.[0-9]_.[0-9]_.[0-9]_.[0-9]_.json
+
+# Runtime data
+
+pids
+_.pid
+_.seed
+\*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+
+lib-cov
+
+# Coverage directory used by tools like istanbul
+
+coverage
+\*.lcov
+
+# nyc test coverage
+
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+
+bower_components
+
+# node-waf configuration
+
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+
+build/Release
+
+# Dependency directories
+
+node_modules/
+jspm_packages/
+
+# Snowpack dependency directory (https://snowpack.dev/)
+
+web_modules/
+
+# TypeScript cache
+
+\*.tsbuildinfo
+
+# Optional npm cache directory
+
+.npm
+
+# Optional eslint cache
+
+.eslintcache
+
+# Optional stylelint cache
+
+.stylelintcache
+
+# Microbundle cache
+
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
+# Optional REPL history
+
+.node_repl_history
+
+# Output of 'npm pack'
+
+\*.tgz
+
+# Yarn Integrity file
+
+.yarn-integrity
+
+# dotenv environment variable files
+
+.env
+.env.development.local
+.env.test.local
+.env.production.local
+.env.local
+
+# parcel-bundler cache (https://parceljs.org/)
+
+.cache
+.parcel-cache
+
+# Next.js build output
+
+.next
+out
+
+# Nuxt.js build / generate output
+
+.nuxt
+dist
+
+# Gatsby files
+
+.cache/
+
+# Comment in the public line in if your project uses Gatsby and not Next.js
+
+# https://nextjs.org/blog/next-9-1#public-directory-support
+
+# public
+
+# vuepress build output
+
+.vuepress/dist
+
+# vuepress v2.x temp and cache directory
+
+.temp
+.cache
+
+# Docusaurus cache and generated files
+
+.docusaurus
+
+# Serverless directories
+
+.serverless/
+
+# FuseBox cache
+
+.fusebox/
+
+# DynamoDB Local files
+
+.dynamodb/
+
+# TernJS port file
+
+.tern-port
+
+# Stores VSCode versions used for testing VSCode extensions
+
+.vscode-test
+
+# yarn v2
+
+.yarn/cache
+.yarn/unplugged
+.yarn/build-state.yml
+.yarn/install-state.gz
+.pnp.\*
+
+esbuild

bench/bundle/README.md

@@ -0,0 +1,40 @@
+# Bundler benchmark
+
+This is a performance benchmark of the following bundlers:
+
+- Bun
+- esbuild
+- Parcel 2
+- Rollup + Terser
+- Webpack
+
+It is an exact copy of [`esbuild`'s benchmark](https://github.com/evanw/esbuild/blob/main/Makefile), aside from the fact that Bun [has been added](https://github.com/colinhacks/esbuild/commit/1b928b7981aa7edfadf77fcf8931bb8d6f38cd96). The benchmark bundles 10 copies of the large [three.js](https://threejs.org/), with minification and source maps enabled.
+
+To run the benchmark:
+
+```sh
+$ chmod +x run-bench.sh
+$ ./run-bench.sh
+```
+
+Various output will be written to the console by each bundler. Scan through the results for lines that look like this underneath each bundler output:
+
+```sh
+real <number>
+user <number>
+sys <number>
+```
+
+These lines are generated by the `time` command which is used to benchmark each build.
+
+## Results
+
+The `real` results, as run on a 16-inch M1 Macbook Pro:
+
+| Bundler | Time   |
+| ------- | ------ |
+| Bun     | 0.17s  |
+| esbuild | 0.33s  |
+| Rollup  | 18.82s |
+| Webpack | 26.21  |
+| Parcel  | 17.95s |

bench/bundle/index.ts

@@ -0,0 +1 @@
+console.log("Hello via Bun!");

bench/bundle/package.json

@@ -0,0 +1,8 @@
+{
+  "name": "bundle",
+  "module": "index.ts",
+  "type": "module",
+  "devDependencies": {
+    "bun-types": "^0.5.0"
+  }
+}

bench/bundle/run-bench.sh

@@ -0,0 +1,3 @@
+git clone git@github.com:colinhacks/esbuild.git
+cd esbuild
+make bench-three

bench/bundle/tsconfig.json

@@ -0,0 +1,20 @@
+{
+  "compilerOptions": {
+    "lib": [
+      "ESNext"
+    ],
+    "module": "esnext",
+    "target": "esnext",
+    "moduleResolution": "bundler",
+    "strict": true,
+    "downlevelIteration": true,
+    "skipLibCheck": true,
+    "jsx": "react-jsx",
+    "allowSyntheticDefaultImports": true,
+    "forceConsistentCasingInFileNames": true,
+    "allowJs": true,
+    "types": [
+      "bun-types" // add Bun global
+    ]
+  }
+}

bench/emitter/implementations.mjs

@@ -0,0 +1,31 @@
+import EventEmitter3 from "eventemitter3";
+import { group } from "mitata";
+import EventEmitterNative from "node:events";
+
+export const implementations = [
+  {
+    EventEmitter: EventEmitterNative,
+    name: process.isBun ? (EventEmitterNative.init ? "bun" : "C++") : "node:events",
+    monkey: true,
+  },
+  // { EventEmitter: EventEmitter3, name: "EventEmitter3" },
+].filter(Boolean);
+
+for (const impl of implementations) {
+  impl.EventEmitter?.setMaxListeners?.(Infinity);
+}
+
+export function groupForEmitter(name, cb) {
+  if (implementations.length === 1) {
+    return cb({
+      ...implementations[0],
+      name: `${name}: ${implementations[0].name}`,
+    });
+  } else {
+    return group(name, () => {
+      for (let impl of implementations) {
+        cb(impl);
+      }
+    });
+  }
+}

bench/emitter/microbench.mjs

@@ -0,0 +1,96 @@
+import { bench, run } from "mitata";
+import { groupForEmitter } from "./implementations.mjs";
+
+var id = 0;
+
+groupForEmitter("single emit", ({ EventEmitter, name }) => {
+  const emitter = new EventEmitter();
+
+  emitter.on("hello", event => {
+    event.preventDefault();
+  });
+
+  bench(name, () => {
+    emitter.emit("hello", {
+      preventDefault() {
+        id++;
+      },
+    });
+  });
+});
+
+groupForEmitter("on x 10_000 (handler)", ({ EventEmitter, name }) => {
+  const emitter = new EventEmitter();
+
+  bench(name, () => {
+    var cb = event => {
+      event.preventDefault();
+    };
+    emitter.on("hey", cb);
+    var called = false;
+    for (let i = 0; i < 10_000; i++)
+      emitter.emit("hey", {
+        preventDefault() {
+          id++;
+          called = true;
+        },
+      });
+
+    if (!called) throw new Error("not called");
+  });
+});
+
+// for (let { impl: EventEmitter, name, monkey } of []) {
+//   if (monkey) {
+//     var monkeyEmitter = Object.assign({}, EventEmitter.prototype);
+//     monkeyEmitter.on("hello", event => {
+//       event.preventDefault();
+//     });
+
+//     bench(`[monkey] ${className}.emit`, () => {
+//       var called = false;
+//       monkeyEmitter.emit("hello", {
+//         preventDefault() {
+//           id++;
+//           called = true;
+//         },
+//       });
+
+//       if (!called) {
+//         throw new Error("monkey failed");
+//       }
+//     });
+
+//     bench(`[monkey] ${className}.on x 10_000 (handler)`, () => {
+//       var cb = () => {
+//         event.preventDefault();
+//       };
+//       monkeyEmitter.on("hey", cb);
+//       for (let i = 0; i < 10_000; i++)
+//         monkey.emit("hey", {
+//           preventDefault() {
+//             id++;
+//           },
+//         });
+//       monkeyEmitter.off("hey", cb);
+//     });
+//   }
+// }
+
+// var target = new EventTarget();
+// target.addEventListener("hello", event => {});
+// bench("EventTarget.dispatch", () => {
+//   target.dispatchEvent(event);
+// });
+
+// var hey = new Event("hey");
+
+// bench("EventTarget.on x 10_000 (handler)", () => {
+//   var handler = event => {};
+//   target.addEventListener("hey", handler);
+
+//   for (let i = 0; i < 10_000; i++) target.dispatchEvent(hey);
+//   target.removeEventListener("hey", handler);
+// });
+
+await run();

bench/emitter/microbench_once.mjs

@@ -0,0 +1,40 @@
+import { bench, run } from "mitata";
+import { groupForEmitter } from "./implementations.mjs";
+
+var id = 0;
+
+groupForEmitter("test 1", ({ EventEmitter, name }) => {
+  const emitter = new EventEmitter();
+
+  emitter.on("hello", event => {
+    event.preventDefault();
+  });
+
+  bench(name, () => {
+    emitter.once("hello", event => {
+      event.preventDefault();
+    });
+    emitter.emit("hello", {
+      preventDefault() {
+        id++;
+      },
+    });
+  });
+});
+
+groupForEmitter("test 2", ({ EventEmitter, name }) => {
+  const emitter = new EventEmitter();
+
+  bench(name, () => {
+    emitter.once("hello", event => {
+      event.preventDefault();
+    });
+    emitter.emit("hello", {
+      preventDefault() {
+        id++;
+      },
+    });
+  });
+});
+
+await run();

bench/emitter/realworld_stream.mjs

@@ -0,0 +1,63 @@
+import { bench, run } from "mitata";
+import { groupForEmitter } from "./implementations.mjs";
+
+// Psuedo RNG is derived from https://stackoverflow.com/a/424445
+let rngState = 123456789;
+function nextInt() {
+  const m = 0x80000000; // 2**31;
+  const a = 1103515245;
+  const c = 12345;
+  rngState = (a * rngState + c) % m;
+  return rngState;
+}
+function nextRange(start, end) {
+  // returns in range [start, end): including start, excluding end
+  // can't modulu nextInt because of weak randomness in lower bits
+  const rangeSize = end - start;
+  const randomUnder1 = nextInt() / 0x7fffffff; // 2**31 - 1
+  return start + Math.floor(randomUnder1 * rangeSize);
+}
+
+const chunks = new Array(1024).fill(null).map((_, j) => {
+  const arr = new Uint8Array(1024);
+  for (let i = 0; i < arr.length; i++) {
+    arr[i] = nextRange(0, 256);
+  }
+  return arr;
+});
+
+groupForEmitter("stream simulation", ({ EventEmitter, name }) => {
+  bench(name, () => {
+    let id = 0;
+    const stream = new EventEmitter();
+
+    stream.on("start", res => {
+      if (res.status !== 200) throw new Error("not 200");
+    });
+
+    const recived = [];
+    stream.on("data", req => {
+      recived.push(req);
+    });
+
+    stream.on("end", ev => {
+      ev.preventDefault();
+    });
+
+    // simulate a stream
+    stream.emit("start", { status: 200 });
+    for (let chunk of chunks) {
+      stream.emit("data", chunk);
+    }
+    stream.emit("end", {
+      preventDefault() {
+        id++;
+      },
+    });
+
+    if (id !== 1) throw new Error("not implemented right");
+    if (recived.length !== 1024) throw new Error("not implemented right");
+  });
+});
+
+await run();

bench/package.json

@@ -1,11 +1,13 @@
 {
   "name": "bench",
   "dependencies": {
-    "mitata": "^0.1.6",
-    "esbuild": "^0.14.12",
-    "@swc/core": "^1.2.133",
     "@babel/core": "^7.16.10",
-    "@babel/preset-react": "^7.16.7"
+    "@babel/preset-react": "^7.16.7",
+    "@swc/core": "^1.2.133",
+    "benchmark": "^2.1.4",
+    "esbuild": "^0.14.12",
+    "eventemitter3": "^5.0.0",
+    "mitata": "^0.1.6"
   },
   "scripts": {
     "ffi": "cd ffi && bun run deps && bun run build && bun run bench",

bench/react-hello-world/react-hello-world.jsx

@@ -1,5 +1,5 @@
 // to run this:
-//  NODE_ENV=production bun --jsx-production react-hello-world.jsx
+//  NODE_ENV=production bun react-hello-world.jsx
 
 // Make sure you're using react-dom@18.3.0 or later.
 // Currently that is available at react-dom@next (which is installed in this repository)

bench/snippets/array-arguments-slice.mjs

@@ -1,4 +1,4 @@
-import { bench, run } from "mitata";
+import { bench, run } from "./runner.mjs";
 
 function doIt(...args) {
   // we use .at() to prevent constant folding optimizations

bench/snippets/array-map.mjs

@@ -1,5 +1,5 @@
 // https://github.com/oven-sh/bun/issues/1096
-import { bench, run } from "mitata";
+import { bench, run } from "./runner.mjs";
 
 const identity = x => x;
 

bench/snippets/array-shift.mjs

@@ -1,4 +1,4 @@
-import { bench, run } from "mitata";
+import { bench, run } from "./runner.mjs";
 
 var myArray = new Array(5);
 bench("[1, 2, 3, 4, 5].shift()", () => {

bench/snippets/arraybuffersink.mjs

@@ -1,5 +1,6 @@
+// @runtime bun
 import { ArrayBufferSink } from "bun";
-import { bench, run } from "mitata";
+import { bench, run } from "./runner.mjs";
 
 var short = "Hello World!";
 var shortUTF16 = "Hello World 💕💕💕";

bench/snippets/assert.mjs

@@ -1,4 +1,4 @@
-import { bench, group, run } from "mitata";
+import { bench, group, run } from "./runner.mjs";
 import * as assert from "assert";
 
 bench("deepEqual", () => {

bench/snippets/buffer-create.mjs

@@ -1,6 +1,9 @@
-import { bench, run } from "mitata";
+// @runtime bun,node,deno
+import { bench, run } from "./runner.mjs";
+import process from "node:process";
+import { Buffer } from "node:buffer";
 
-const N = parseInt(process.argv.slice(2).at(0) || "10", 10);
+const N = parseInt(process.env.RUN_COUNTER ?? "10000", 10);
 var isBuffer = new Buffer(0);
 var isNOtBuffer = "not a buffer";
 

bench/snippets/concat.js

@@ -1,4 +1,4 @@
-import { bench, group, run } from "mitata";
+import { bench, group, run } from "./runner.mjs";
 import { readFileSync } from "fs";
 import { allocUnsafe } from "bun";
 

bench/snippets/crypto-2190.mjs

@@ -0,0 +1,29 @@
+// https://github.com/oven-sh/bun/issues/2190
+import { bench, run } from "mitata";
+import { createHash } from "node:crypto";
+
+const data =
+  "Delightful remarkably mr on announcing themselves entreaties favourable. About to in so terms voice at. Equal an would is found seems of. The particular friendship one sufficient terminated frequently themselves. It more shed went up is roof if loud case. Delay music in lived noise an. Beyond genius really enough passed is up.";
+
+const scenarios = [
+  { alg: "md5", digest: "hex" },
+  { alg: "md5", digest: "base64" },
+  { alg: "sha1", digest: "hex" },
+  { alg: "sha1", digest: "base64" },
+  { alg: "sha256", digest: "hex" },
+  { alg: "sha256", digest: "base64" },
+];
+
+for (const { alg, digest } of scenarios) {
+  bench(`${alg}-${digest}`, () => {
+    createHash(alg).update(data).digest(digest);
+  });
+
+  if ("Bun" in globalThis) {
+    bench(`${alg}-${digest} (Bun.CryptoHasher)`, () => {
+      new Bun.CryptoHasher(alg).update(data).digest(digest);
+    });
+  }
+}
+
+run();

bench/snippets/crypto-hasher.mjs

@@ -1,15 +1,15 @@
 // so it can run in environments without node module resolution
-import { bench, run } from "mitata";
+import { bench, run } from "./runner.mjs";
 
 import crypto from "node:crypto";
 
-var foo = Buffer.allocUnsafe(16384);
+var foo = Buffer.allocUnsafe(512);
 foo.fill(123);
 
 // if ("Bun" in globalThis) {
 //   const { CryptoHasher } = Bun;
-//   bench("CryptoHasher Blake2b256", () => {
-//     var hasher = new CryptoHasher("blake2b256");
+//   bench("Bun.CryptoHasher(sha512)", () => {
+//     var hasher = new CryptoHasher("sha512");
 //     hasher.update(foo);
 //     hasher.digest();
 //   });

bench/snippets/crypto-stream.mjs

@@ -0,0 +1,26 @@
+// https://github.com/oven-sh/bun/issues/2190
+import { bench, run } from "mitata";
+import { createHash } from "node:crypto";
+
+const data =
+  "Delightful remarkably mr on announcing themselves entreaties favourable. About to in so terms voice at. Equal an would is found seems of. The particular friendship one sufficient terminated frequently themselves. It more shed went up is roof if loud case. Delay music in lived noise an. Beyond genius really enough passed is up.";
+
+const scenarios = [
+  { alg: "md5", digest: "hex" },
+  { alg: "md5", digest: "base64" },
+  { alg: "sha1", digest: "hex" },
+  { alg: "sha1", digest: "base64" },
+  { alg: "sha256", digest: "hex" },
+  { alg: "sha256", digest: "base64" },
+];
+
+for (const { alg, digest } of scenarios) {
+  bench(`${alg}-${digest}`, () => {
+    const hasher = createHash(alg);
+    hasher.write(data);
+    hasher.end();
+    hasher.read();
+  });
+}
+
+run();

bench/snippets/deep-equals.js

@@ -1,4 +1,4 @@
-import { bench, group, run } from "mitata";
+import { bench, group, run } from "./runner.mjs";
 import fastDeepEquals from "fast-deep-equal/es6/index";
 // const Date = globalThis.Date;
 

bench/snippets/dns.node.mjs

@@ -1,5 +1,5 @@
 import { lookup, resolve } from "node:dns/promises";
-import { bench, run } from "mitata";
+import { bench, run } from "./runner.mjs";
 
 bench("(cached) dns.lookup remote x 50", async () => {
   var tld = "example.com";

bench/snippets/dns.ts

@@ -1,5 +1,5 @@
 import { dns } from "bun";
-import { bench, run, group } from "mitata";
+import { bench, run, group } from "./runner.mjs";
 
 async function forEachBackend(name, fn) {
   group(name, () => {

bench/snippets/emitter.mjs

@@ -1,101 +0,0 @@
-// **so this file can run in node**
-import { createRequire } from "node:module";
-const require = createRequire(import.meta.url);
-// --
-
-const EventEmitterNative = require("node:events").EventEmitter;
-const TypedEmitter = require("tiny-typed-emitter").TypedEmitter;
-const EventEmitter3 = require("eventemitter3").EventEmitter;
-import { bench, run } from "../../node_modules/mitata/src/cli.mjs";
-const event = new Event("hello");
-var id = 0;
-for (let [EventEmitter, className] of [
-  [EventEmitterNative, "EventEmitter"],
-  [TypedEmitter, "TypedEmitter"],
-  [EventEmitter3, "EventEmitter3"],
-]) {
-  const emitter = new EventEmitter();
-
-  emitter.on("hello", event => {
-    event.preventDefault();
-  });
-
-  bench(`${className}.emit`, () => {
-    emitter.emit("hello", {
-      preventDefault() {
-        id++;
-      },
-    });
-  });
-
-  bench(`${className}.on x 10_000 (handler)`, () => {
-    var cb = event => {
-      event.preventDefault();
-    };
-    emitter.on("hey", cb);
-    var called = false;
-    for (let i = 0; i < 10_000; i++)
-      emitter.emit("hey", {
-        preventDefault() {
-          id++;
-          called = true;
-        },
-      });
-    emitter.off("hey", cb);
-
-    if (!called) throw new Error("not called");
-  });
-
-  if (EventEmitter !== EventEmitter3) {
-    var monkey = Object.assign({}, EventEmitter.prototype);
-    monkey.on("hello", event => {
-      event.preventDefault();
-    });
-
-    bench(`[monkey] ${className}.emit`, () => {
-      var called = false;
-      monkey.emit("hello", {
-        preventDefault() {
-          id++;
-          called = true;
-        },
-      });
-
-      if (!called) {
-        throw new Error("monkey failed");
-      }
-    });
-
-    bench(`[monkey] ${className}.on x 10_000 (handler)`, () => {
-      var cb = () => {
-        event.preventDefault();
-      };
-      monkey.on("hey", cb);
-      for (let i = 0; i < 10_000; i++)
-        monkey.emit("hey", {
-          preventDefault() {
-            id++;
-          },
-        });
-      monkey.off("hey", cb);
-    });
-  }
-}
-
-var target = new EventTarget();
-target.addEventListener("hello", event => {});
-bench("EventTarget.dispatch", () => {
-  target.dispatchEvent(event);
-});
-
-var hey = new Event("hey");
-
-bench("EventTarget.on x 10_000 (handler)", () => {
-  var handler = event => {};
-  target.addEventListener("hey", handler);
-
-  for (let i = 0; i < 10_000; i++) target.dispatchEvent(hey);
-  target.removeEventListener("hey", handler);
-});
-
-await run();

bench/snippets/escapeHTML.js

@@ -1,5 +1,5 @@
-import { group } from "mitata";
-import { bench, run } from "mitata";
+import { group } from "./runner.mjs";
+import { bench, run } from "./runner.mjs";
 import { encode as htmlEntityEncode } from "html-entities";
 import { escape as heEscape } from "he";
 

bench/snippets/ffi-overhead.mjs

@@ -1,5 +1,5 @@
 import { viewSource, dlopen, CString, ptr, toBuffer, toArrayBuffer, FFIType, callback } from "bun:ffi";
-import { bench, group, run } from "mitata";
+import { bench, group, run } from "./runner.mjs";
 
 const types = {
   returns_true: {

bench/snippets/index-of.mjs

@@ -1,4 +1,4 @@
-import { bench, run } from "mitata";
+import { bench, run } from "./runner.mjs";
 
 const input =
   "Hello, World! foo bar baz qux quux corge grault garply waldo fred plugh xyzzy thud z a b c d e f g h i j k l m n o p q r s t u v w x y z".split(

bench/snippets/json-parse-stringify.mjs

@@ -0,0 +1,57 @@
+import { bench, run } from "./runner.mjs";
+
+var obj = {
+  "restApiRoot": "/api",
+  "host": "0.0.0.0",
+  "port": 3000,
+  "remoting": {
+    "context": false,
+    "rest": {
+      "handleErrors": false,
+      "normalizeHttpPath": false,
+      "xml": false,
+    },
+    "json": {
+      "strict": false,
+      "limit": "100kb",
+    },
+    "urlencoded": {
+      "extended": true,
+      "limit": "100kb",
+      boop: {
+        "restApiRoot": "/api",
+        "host": "0.0.0.0",
+        "port": 3000,
+        "remoting": {
+          "context": false,
+          "rest": {
+            "handleErrors": false,
+            "normalizeHttpPath": false,
+            "xml": false,
+          },
+          "json": {
+            "strict": false,
+            "limit": "100kb",
+          },
+          "urlencoded": {
+            "extended": true,
+            "limit": "100kb",
+          },
+          "cors": false,
+        },
+      },
+    },
+    "cors": false,
+  },
+};
+var big = JSON.stringify(obj);
+
+bench("JSON.parse(obj)", () => {
+  globalThis.foo = JSON.parse(big);
+});
+
+bench("JSON.stringify(obj)", () => {
+  globalThis.bar = JSON.stringify(obj);
+});
+
+await run();

bench/snippets/native-overhead.mjs

@@ -1,4 +1,4 @@
-import { bench, run } from "mitata";
+import { bench, run } from "./runner.mjs";
 
 // These are no-op C++ functions that are exported to JS.
 const lazy = globalThis[Symbol.for("Bun.lazy")];

bench/snippets/node-vm.mjs

@@ -0,0 +1,42 @@
+// @runtime node, bun
+import { bench, run } from "./runner.mjs";
+import * as vm from "node:vm";
+
+const context = {
+  animal: "cat",
+  count: 2,
+};
+
+const script = new vm.Script("animal = 'hey'");
+
+vm.createContext(context);
+
+bench("vm.Script.runInContext", () => {
+  script.runInContext(context);
+});
+
+bench("vm.Script.runInThisContext", () => {
+  script.runInThisContext(context);
+});
+
+bench("vm.Script.runInNewContext", () => {
+  script.runInNewContext(context);
+});
+
+bench("vm.runInContext", () => {
+  vm.runInContext("animal = 'hey'", context);
+});
+
+bench("vm.runInNewContext", () => {
+  vm.runInNewContext("animal = 'hey'", context);
+});
+
+bench("vm.runInThisContext", () => {
+  vm.runInThisContext("animal = 'hey'", context);
+});
+
+bench("vm.createContext", () => {
+  vm.createContext({ yo: 1 });
+});
+
+await run();

bench/snippets/noop.js

@@ -1,4 +1,4 @@
-import { bench, run } from "mitata";
+import { bench, run } from "./runner.mjs";
 
 var noop = globalThis[Symbol.for("Bun.lazy")]("noop");
 var { function: noopFn, callback } = noop;

bench/snippets/object-values.mjs

@@ -24,7 +24,7 @@ const obj = {
   w: 23,
 };
 
-import { bench, group, run } from "mitata";
+import { bench, group, run } from "./runner.mjs";
 
 var val = 0;
 bench("Object.values(literal)", () => {

bench/snippets/package.json

@@ -1,7 +0,0 @@
-{
-  "dependencies": {
-    "eventemitter3": "^5.0.0",
-    "tiny-typed-emitter": "latest"
-  },
-  "prettier": "../../.prettierrc.cjs"
-}

bench/snippets/performance-now-overhead.js

@@ -1,5 +1,5 @@
-import { group } from "mitata";
-import { bench, run } from "mitata";
+import { group } from "./runner.mjs";
+import { bench, run } from "./runner.mjs";
 bench("performance.now x 1000", () => {
   for (let i = 0; i < 1000; i++) {
     performance.now();

bench/snippets/process.mjs

@@ -1,4 +1,4 @@
-import { bench, run } from "mitata";
+import { bench, run } from "./runner.mjs";
 
 bench("process.stderr.write('hey')", () => {
   process.stderr.write("hey");

bench/snippets/react-dom-render.bun.js

@@ -1,4 +1,4 @@
-import { bench, group, run } from "mitata";
+import { bench, group, run } from "./runner.mjs";
 import { renderToReadableStream } from "react-dom/server.browser";
 import { renderToReadableStream as renderToReadableStreamBun } from "react-dom/server";
 

bench/snippets/read-file.mjs

@@ -1,5 +1,5 @@
 import { readFileSync, writeFileSync } from "node:fs";
-import { bench, run } from "mitata";
+import { bench, run } from "./runner.mjs";
 
 var short = (function () {
   const text = "Hello World!";

bench/snippets/readdir.mjs

@@ -1,5 +1,5 @@
 import { readdirSync } from "fs";
-import { bench, run } from "mitata";
+import { bench, run } from "./runner.mjs";
 import { argv } from "process";
 
 const dir = argv.length > 2 ? argv[2] : "/tmp";

bench/snippets/runner-entrypoint.js

@@ -0,0 +1,244 @@
+// note: this isn't done yet
+// we look for `// @runtime` in the file to determine which runtimes to run the benchmark in
+import { spawnSync } from "bun";
+import { readdirSync, readFileSync } from "node:fs";
+import { Database } from "bun:sqlite";
+import { extname, basename } from "path";
+
+const exts = [".js", ".ts", ".mjs", ".tsx"];
+
+const runtimes = {
+  bun: process.execPath,
+  node: process.env.NODE ?? Bun.which("node"),
+  deno: process.env.DENO ?? Bun.which("deno"),
+};
+
+if (process.env.BUN_ONLY) {
+  delete runtimes.node;
+  delete runtimes.deno;
+}
+
+function getEntry(sourceContents, file) {
+  const targetLineStart = sourceContents.indexOf("// @runtime ");
+  if (targetLineStart === -1) {
+    return;
+  }
+
+  const targetLineEnd = sourceContents.indexOf("\n", targetLineStart);
+  if (targetLineEnd === -1) {
+    return;
+  }
+
+  const targetLine = sourceContents.slice(targetLineStart, targetLineEnd);
+  const targets = targetLine
+    .slice("// @runtime ".length)
+    .split(/[,\s]+/gm)
+    .map(a => a.trim().toLowerCase())
+    .filter(Boolean)
+    .sort();
+
+  if (targets.length === 0) {
+    throw new TypeError("No targets specified in " + JSON.stringify(file) + "\n> " + JSON.stringify(targetLine) + "\n");
+  }
+
+  var cmds = {};
+  for (let target of targets) {
+    if (!(target in runtimes)) {
+      throw new TypeError(
+        "Unknown target " + JSON.stringify(target) + "\n> " + targetLine + "\n file:" + JSON.stringify(file),
+      );
+    }
+
+    switch (target) {
+      case "bun": {
+        if (!runtimes.bun) {
+          continue;
+        }
+
+        cmds.bun = [runtimes.bun, "run", file];
+        break;
+      }
+
+      case "node": {
+        if (!runtimes.node) {
+          continue;
+        }
+        cmds.node = [runtimes.node, file];
+        break;
+      }
+
+      case "deno": {
+        if (!runtimes.deno) {
+          continue;
+        }
+        cmds.deno = [runtimes.deno, "run", "-A", "--unstable", file];
+        break;
+      }
+
+      default: {
+        throw new Error("This should not be reached.");
+        break;
+      }
+    }
+  }
+
+  if (Object.keys(cmds).length === 0) {
+    return;
+  }
+
+  return cmds;
+}
+
+function scan() {
+  const queue = [];
+  for (let file of readdirSync(import.meta.dir)) {
+    if (!exts.includes(extname(file))) continue;
+    if (file.includes("runner")) continue;
+
+    const cmds = getEntry(readFileSync(file, "utf8"), file);
+    if (!cmds) continue;
+
+    queue.push({ file, cmds });
+  }
+
+  return queue;
+}
+
+const env = {
+  ...process.env,
+  BENCHMARK_RUNNER: "1",
+  NODE_NO_WARNINGS: "1",
+  NODE_OPTIONS: "--no-warnings",
+  BUN_DEBUG_QUIET_LOGS: "1",
+  NO_COLOR: "1",
+  DISABLE_COLORS: "1",
+};
+
+function* run({ cmds, file }) {
+  const benchmarkID = basename(file)
+    .toLowerCase()
+    .replace(/\.m?js$/, "")
+    .replace(/\.tsx?$/, "")
+    .replace(".node", "")
+    .replace(".deno", "")
+    .replace(".bun", "");
+
+  // if benchmarkID doesn't contain only words, letters or numbers or dashes or underscore, throw
+  if (!/^[a-z0-9_-]+$/i.test(benchmarkID)) {
+    throw new Error(
+      "Benchmark files must only contain /a-zA-Z0-9-_/ " +
+        JSON.stringify(benchmarkID) +
+        " in file " +
+        JSON.stringify(file),
+    );
+  }
+
+  for (let runtime in cmds) {
+    const timestamp = Date.now();
+    const spawnStart = performance.now();
+    var { stdout, exitCode } = spawnSync({
+      cmd: cmds[runtime],
+      env,
+      stderr: "inherit",
+      stdout: "pipe",
+    });
+    const spawnElapsed = performance.now() - spawnStart;
+    stdout = stdout.toString();
+    try {
+      const json = JSON.parse(stdout.trim());
+      yield {
+        file: file,
+        benchmarkID,
+        result: json,
+        runtime: runtime,
+        timestamp,
+        elapsed: spawnElapsed,
+        runtimeVersion: (runtime === "bun"
+          ? `${Bun.version}-${Bun.revision}`
+          : String(json?.runtime).split(" ").at(1)
+        ).replace(/^v/, ""),
+      };
+    } catch (e) {
+      console.error("Failing file", file);
+      console.error(JSON.stringify(cmds[runtime]));
+      console.error(stdout.toString());
+      throw e;
+    }
+
+    if (exitCode !== 0) {
+      throw new Error("Non-zero exit code in file " + JSON.stringify(file) + ", runtime: " + JSON.stringify(runtime));
+    }
+  }
+}
+
+const db = Database.open(process.RUNNER_DB_PATH ?? `runs-${process.platform}-${process.arch}.db`);
+db.run(`CREATE TABLE IF NOT EXISTS benchmarkResults (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    results TEXT NOT NULL
+);`);
+db.run(`
+CREATE TABLE IF NOT EXISTS runs (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    runtime TEXT NOT NULL,
+    runtimeVersion TEXT NOT NULL,
+    benchmarkID TEXT NOT NULL,
+    timestamp INTEGER NOT NULL,
+    elapsed REAL NOT NULL,
+    benchmarkResultID INTEGER NOT NULL
+);
+
+
+`);
+db.run(`CREATE INDEX IF NOT EXISTS runs_benchmarkID ON runs (benchmarkID);`);
+db.run(`CREATE INDEX IF NOT EXISTS runs_timestamp ON runs (timestamp);`);
+db.run(`CREATE INDEX IF NOT EXISTS runs_runtime ON runs (runtime);`);
+db.run(`CREATE INDEX IF NOT EXISTS runs_runtimeVersion ON runs (runtimeVersion);`);
+db.run(`CREATE INDEX IF NOT EXISTS runs_benchmarkResultID ON runs (benchmarkResultID);`);
+
+// TODO: finish this
+for (let result of scan()) {
+  var prevBenchmarkID = null;
+  for (let {
+    runtime,
+    benchmarkID,
+    runtimeVersion,
+    timestamp,
+    elapsed,
+    file,
+    result: { benchmarks },
+  } of run(result)) {
+    if (prevBenchmarkID !== benchmarkID) {
+      console.log("\n" + `${benchmarkID}:`);
+      prevBenchmarkID = benchmarkID;
+    }
+
+    console.log(
+      " ",
+      `[${Math.round(elapsed)}ms]`,
+      "Executed",
+      JSON.stringify(benchmarkID),
+      "in",
+      runtime,
+      runtimeVersion,
+      "(" + file + ")",
+    );
+    const { id: benchmarkResultID } = db
+      .query(
+        `
+        INSERT INTO benchmarkResults (results) VALUES (?) RETURNING id
+      `,
+      )
+      .get(JSON.stringify(benchmarks));
+    db.run(
+      `
+      INSERT INTO runs (runtime, runtimeVersion, benchmarkID, timestamp, elapsed, benchmarkResultID) VALUES (
+        ?, ?, ?, ?, ?, ?)`,
+      runtime,
+      runtimeVersion,
+      benchmarkID,
+      timestamp,
+      elapsed,
+      benchmarkResultID,
+    );
+  }
+}

bench/snippets/runner.mjs

@@ -0,0 +1,22 @@
+import * as Mitata from "../node_modules/mitata/src/cli.mjs";
+import process from "node:process";
+
+const asJSON = !!process?.env?.BENCHMARK_RUNNER;
+
+export function run(opts = {}) {
+  opts ??= {};
+
+  if (asJSON) {
+    opts.json = true;
+  }
+
+  return Mitata.run(opts);
+}
+
+export function bench(name, fn) {
+  return Mitata.bench(name, fn);
+}
+
+export function group(name, fn) {
+  return Mitata.group(name, fn);
+}

bench/snippets/sha512.js

@@ -1,4 +1,4 @@
-import { bench, run } from "mitata";
+import { bench, run } from "./runner.mjs";
 import { SHA512 } from "bun";
 
 bench('SHA512.hash("hello world")', () => {

bench/snippets/sha512.node.mjs

@@ -1,4 +1,4 @@
-import { bench, run } from "mitata";
+import { bench, run } from "./runner.mjs";
 import { createHash } from "crypto";
 
 bench('createHash("sha256").update("hello world").digest()', () => {

bench/snippets/spawn-hugemem.mjs

@@ -1,5 +1,5 @@
 import { spawnSync } from "bun";
-import { bench, run } from "mitata";
+import { bench, run } from "./runner.mjs";
 
 var memory = new Uint8Array(128 * 1024 * 1024);
 memory.fill(10);

bench/snippets/spawn-hugemem.node.mjs

@@ -1,5 +1,5 @@
 import { spawnSync } from "child_process";
-import { bench, run } from "mitata";
+import { bench, run } from "./runner.mjs";
 
 var memory = new Uint8Array(128 * 1024 * 1024);
 memory.fill(10);

bench/snippets/spawn.mjs

@@ -1,5 +1,5 @@
 import { spawnSync } from "bun";
-import { bench, run } from "mitata";
+import { bench, run } from "./runner.mjs";
 
 bench("spawnSync echo hi", () => {
   spawnSync({ cmd: ["echo", "hi"] });

bench/snippets/spawn.node.mjs

@@ -1,5 +1,6 @@
-import { spawnSync } from "child_process";
-import { bench, run } from "mitata";
+// @runtime bun,node,deno
+import { spawnSync } from "node:child_process";
+import { bench, run } from "./runner.mjs";
 
 bench("spawnSync echo hi", () => {
   spawnSync("echo", ["hi"], { encoding: "buffer", shell: false });

bench/snippets/stat.mjs

@@ -1,5 +1,5 @@
 import { readdirSync, statSync } from "fs";
-import { bench, run } from "mitata";
+import { bench, run } from "./runner.mjs";
 import { argv } from "process";
 
 const dir = argv.length > 2 ? argv[2] : "/tmp";

bench/snippets/stderr.mjs

@@ -1,4 +1,4 @@
-import { run, bench } from "mitata";
+import { run, bench } from "./runner.mjs";
 
 var writer = globalThis.Bun ? Bun.stderr.writer() : undefined;
 if (writer)

bench/snippets/string-decoder.mjs

@@ -1,4 +1,4 @@
-import { bench, run } from "mitata";
+import { bench, run } from "./runner.mjs";
 import { StringDecoder } from "string_decoder";
 
 var short = Buffer.from("Hello World!");

bench/snippets/text-encoder.mjs

@@ -1,4 +1,4 @@
-import { bench, run } from "mitata";
+import { bench, run } from "./runner.mjs";
 
 var short = "Hello World!";
 var shortUTF16 = "Hello World 💕💕💕";

bench/snippets/transpiler.mjs

@@ -1,7 +1,7 @@
 import { readFileSync } from "fs";
 import { dirname } from "path";
 import { fileURLToPath } from "url";
-import { bench, run, group } from "mitata";
+import { bench, run, group } from "./runner.mjs";
 import { createRequire } from "module";
 const require = createRequire(import.meta.url);
 const esbuild_ = require("esbuild/lib/main");

bench/snippets/write-file-huge.mjs

@@ -1,6 +1,6 @@
 import { Buffer } from "node:buffer";
 import { writeFile } from "node:fs/promises";
-import { bench, run } from "mitata";
+import { bench, run } from "./runner.mjs";
 
 var hugeFile = Buffer.alloc(1024 * 1024 * 64);
 var medFile = Buffer.alloc(1024 * 1024 * 16);

bench/snippets/write-file.mjs

@@ -1,5 +1,5 @@
 import { readFileSync, writeFileSync } from "node:fs";
-import { bench, run } from "mitata";
+import { bench, run } from "./runner.mjs";
 
 var short = "Hello World!";
 var shortUTF16 = "Hello World 💕💕💕";

bench/snippets/write.bun.js

@@ -1,4 +1,4 @@
-import { bench, run } from "mitata";
+import { bench, run } from "./runner.mjs";
 import { write } from "bun";
 import { openSync } from "fs";
 

bench/snippets/write.node.mjs

@@ -1,7 +1,9 @@
-import { bench, run } from "mitata";
-import { openSync } from "fs";
-import { writeFile } from "fs/promises";
-import { writeSync as write } from "fs";
+// @runtime node, bun, deno
+import { bench, run } from "./runner.mjs";
+import { Buffer } from "node:buffer";
+import { openSync } from "node:fs";
+import { writeFile } from "node:fs/promises";
+import { writeSync as write } from "node:fs";
 
 bench("writeFile(/tmp/foo.txt, short string)", async () => {
   await writeFile("/tmp/foo.txt", "short string", "utf8");

bench/socketio/client.js

@@ -0,0 +1,61 @@
+const { io } = require("socket.io-client");
+const port = process.env.PORT || 3000;
+
+const URL = `ws://localhost:${port}`;
+const MAX_CLIENTS = 250;
+const BATCHSIZE = MAX_CLIENTS / 10;
+const BATCH_INTERVAL_IN_MS = 1000;
+const EMIT_INTERVAL_IN_MS = 50;
+
+let clientCount = 0;
+let lastReport = new Date().getTime();
+let packetsSinceLastReport = 0;
+
+const clients = [];
+const createClient = () => {
+  const socket = io(URL);
+  clients.push(socket);
+
+  socket.on("server to client event", () => {
+    packetsSinceLastReport++;
+  });
+
+  socket.on("disconnect", reason => {
+    console.log(`disconnect due to ${reason}`);
+  });
+};
+
+let emitInterval = null;
+
+const createClients = () => {
+  for (let i = 0; i < BATCHSIZE; i++) {
+    createClient();
+    clientCount++;
+  }
+
+  if (clientCount < MAX_CLIENTS) {
+    setTimeout(createClients, BATCH_INTERVAL_IN_MS);
+  }
+  if (!emitInterval) {
+    emitInterval = setInterval(() => {
+      clients.forEach(socket => {
+        socket.emit("client to server event", "hello world");
+      });
+    }, EMIT_INTERVAL_IN_MS);
+  }
+};
+
+createClients();
+
+const printReport = () => {
+  const now = new Date().getTime();
+  const durationSinceLastReport = (now - lastReport) / 1000;
+  const packetsPerSeconds = (packetsSinceLastReport / durationSinceLastReport).toFixed(2);
+
+  console.log(`client count: ${clientCount} ; average packets received per second: ${packetsPerSeconds}`);
+
+  packetsSinceLastReport = 0;
+  lastReport = now;
+};
+
+setInterval(printReport, 1000);

bench/socketio/server.js

@@ -0,0 +1,13 @@
+const http = require("http").createServer();
+
+const io = require("socket.io")(http);
+const port = process.env.PORT || 3000;
+io.on("connection", socket => {
+  socket.on("client to server event", msg => {
+    io.emit("server to client event", msg);
+  });
+});
+
+http.listen(port, () => {
+  console.log(`Socket.IO server running at http://localhost:${port}/`);
+});

bench/sqlite/deno.js

@@ -1,4 +1,4 @@
-import { Database } from "https://deno.land/x/sqlite3@0.8.0/mod.ts";
+import { Database } from "https://deno.land/x/sqlite3@0.9.1/mod.ts";
 import { run, bench } from "../node_modules/mitata/src/cli.mjs";
 
 const db = new Database("./src/northwind.sqlite");

bench/sqlite/package-lock.json

@@ -1,728 +0,0 @@
-{
-  "name": "bench",
-  "lockfileVersion": 2,
-  "requires": true,
-  "packages": {
-    "": {
-      "name": "bench",
-      "dependencies": {
-        "better-sqlite3": "^8.0.1"
-      }
-    },
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bench/stream-file-upload-client/.gitignore

@@ -0,0 +1 @@
+hello.txt

bench/stream-file-upload-client/README.md

@@ -0,0 +1,35 @@
+# HTTP request file upload benchmark
+
+This is a simple benchmark of uploading a file to a web server in different runtimes.
+
+## Usage
+
+Generate a file to upload (default is `hello.txt`):
+
+```bash
+bun generate-file.js
+```
+
+Run the server:
+
+```bash
+node server-node.mjs
+```
+
+Run the benchmark in bun:
+
+```bash
+bun stream-file-bun.js
+```
+
+Run the benchmark in node:
+
+```bash
+node stream-file-node.mjs
+```
+
+Run the benchmark in deno:
+
+```bash
+deno run -A stream-file-deno.js
+```

bench/stream-file-upload-client/server-node.mjs

@@ -0,0 +1,15 @@
+import { createServer } from "node:http";
+const server = createServer((req, res) => {
+  var chunkSize = 0;
+  req.on("data", chunk => {
+    chunkSize += chunk.byteLength;
+  });
+
+  req.on("end", () => {
+    console.log("Received", chunkSize, "bytes");
+    res.end(`${chunkSize}`);
+  });
+});
+server.listen(parseInt(process.env.PORT ?? "3000"), (err, port) => {
+  console.log(`http://localhost:${server.address().port}`);
+});

bench/stream-file-upload-client/stream-file-bun.js

@@ -0,0 +1,9 @@
+import { file } from "bun";
+console.time("stream-file-bun");
+const response = await fetch(process.env.URL ?? "http://localhost:3000", {
+  method: "POST",
+  body: file(process.env.FILE ?? "hello.txt"),
+});
+console.timeEnd("stream-file-bun");
+
+console.log("Sent", await response.text(), "bytes");

bench/stream-file-upload-client/stream-file-deno.js

@@ -0,0 +1,12 @@
+const file = await Deno.open(Deno.env.get("FILE") ?? "hello.txt", {
+  read: true,
+});
+
+console.time("stream-file-deno");
+const response = await fetch(Deno.env.get("URL") ?? "http://localhost:3000", {
+  method: "POST",
+  body: file.readable,
+});
+console.timeEnd("stream-file-deno");
+
+console.log("Sent", await response.text(), "bytes");

bench/stream-file-upload-client/stream-file-node.mjs

@@ -0,0 +1,19 @@
+import { createReadStream } from "node:fs";
+import http from "node:http";
+
+console.time("stream-file-node");
+createReadStream(process.env.FILE ?? "hello.txt")
+  .pipe(
+    http
+      .request(process.env.URL ?? "http://localhost:3000", {
+        method: "POST",
+      })
+      .on("response", response => {
+        response.on("data", data => {
+          console.log("Sent", parseInt(data.toString(), 10), "bytes");
+        });
+      }),
+  )
+  .on("close", () => {
+    console.timeEnd("stream-file-node");
+  });

build.zig

@@ -71,6 +71,24 @@ const BunBuildOptions = struct {
     sizegen: bool = false,
     base_path: [:0]const u8 = "",
 
+    runtime_js_version: u64 = 0,
+    fallback_html_version: u64 = 0,
+
+    pub fn updateRuntime(this: *BunBuildOptions) anyerror!void {
+        var runtime_out_file = try std.fs.cwd().openFile("src/runtime.out.js", .{ .mode = .read_only });
+        const runtime_hash = std.hash.Wyhash.hash(
+            0,
+            try runtime_out_file.readToEndAlloc(std.heap.page_allocator, try runtime_out_file.getEndPos()),
+        );
+        this.runtime_js_version = runtime_hash;
+        var fallback_out_file = try std.fs.cwd().openFile("src/fallback.out.js", .{ .mode = .read_only });
+        const fallback_hash = std.hash.Wyhash.hash(
+            0,
+            try fallback_out_file.readToEndAlloc(std.heap.page_allocator, try fallback_out_file.getEndPos()),
+        );
+        this.fallback_html_version = fallback_hash;
+    }
+
     pub fn step(this: BunBuildOptions, b: anytype) *std.build.OptionsStep {
         var opts = b.addOptions();
         opts.addOption(@TypeOf(this.canary), "is_canary", this.canary);
@@ -79,6 +97,8 @@ const BunBuildOptions = struct {
         opts.addOption(@TypeOf(this.bindgen), "bindgen", this.bindgen);
         opts.addOption(@TypeOf(this.sizegen), "sizegen", this.sizegen);
         opts.addOption(@TypeOf(this.base_path), "base_path", this.base_path);
+        opts.addOption(@TypeOf(this.runtime_js_version), "runtime_js_version", this.runtime_js_version);
+        opts.addOption(@TypeOf(this.fallback_html_version), "fallback_html_version", this.fallback_html_version);
         return opts;
     }
 };
@@ -105,28 +125,6 @@ const fmt = struct {
     }
 };
 
-fn updateRuntime() anyerror!void {
-    var runtime_out_file = try std.fs.cwd().openFile("src/runtime.out.js", .{ .mode = .read_only });
-    const runtime_hash = std.hash.Wyhash.hash(
-        0,
-        try runtime_out_file.readToEndAlloc(std.heap.page_allocator, try runtime_out_file.getEndPos()),
-    );
-    const runtime_version_file = std.fs.cwd().createFile("src/runtime.version", .{ .truncate = true }) catch std.debug.panic("Failed to create src/runtime.version", .{});
-    defer runtime_version_file.close();
-    runtime_version_file.writer().print("{any}", .{fmt.hexInt(runtime_hash)}) catch unreachable;
-    var fallback_out_file = try std.fs.cwd().openFile("src/fallback.out.js", .{ .mode = .read_only });
-    const fallback_hash = std.hash.Wyhash.hash(
-        0,
-        try fallback_out_file.readToEndAlloc(std.heap.page_allocator, try fallback_out_file.getEndPos()),
-    );
-
-    const fallback_version_file = std.fs.cwd().createFile("src/fallback.version", .{ .truncate = true }) catch std.debug.panic("Failed to create src/fallback.version", .{});
-
-    fallback_version_file.writer().print("{any}", .{fmt.hexInt(fallback_hash)}) catch unreachable;
-
-    fallback_version_file.close();
-}
-
 var x64 = "x64";
 var optimize: std.builtin.OptimizeMode = undefined;
 
@@ -194,8 +192,6 @@ pub fn build(b: *Build) !void {
     else
         "root.zig";
 
-    updateRuntime() catch {};
-
     const min_version: std.builtin.Version = if (target.getOsTag() != .freestanding)
         target.getOsVersionMin().semver
     else
@@ -271,6 +267,8 @@ pub fn build(b: *Build) !void {
             obj.target.cpu_model = .{ .explicit = &std.Target.aarch64.cpu.generic };
         }
 
+        try default_build_options.updateRuntime();
+
         // we have to dump to stderr because stdout is read by zls
         std.io.getStdErr().writer().print("Build {s} v{} - v{} ({s})\n", .{
             triplet,
@@ -454,38 +452,9 @@ pub fn build(b: *Build) !void {
         }
 
         try configureObjectStep(b, headers_obj, @TypeOf(target), target, obj.main_pkg_path.?);
-        try linkObjectFiles(b, headers_obj, target);
 
         headers_step.dependOn(&headers_obj.step);
         headers_obj.addOptions("build_options", default_build_options.step(b));
-
-        // var iter = headers_obj.modules.iterator();
-        // while (iter.next()) |item| {
-        //     const module = @ptrCast(*Module, item.value_ptr);
-        // }
-        // // while (headers_obj.modules.)
-        // for (headers_obj.packages.items) |pkg_| {
-        //     const pkg: std.build.Pkg = pkg_;
-        //     if (std.mem.eql(u8, pkg.name, "clap")) continue;
-        //     var test_ = b.addTestSource(pkg.source);
-
-        //     b
-        //         .test_.setMainPkgPath(obj.main_pkg_path.?);
-        //     try configureObjectStep(b, test_, @TypeOf(target), target, obj.main_pkg_path.?);
-        //     try linkObjectFiles(b, test_, target);
-        //     test_.addOptions("build_options", default_build_options.step(b));
-
-        //     if (pkg.dependencies) |children| {
-        //         test_.packages = std.ArrayList(std.build.Pkg).init(b.allocator);
-        //         try test_.packages.appendSlice(children);
-        //     }
-
-        //     var before = b.addLog("\x1b[" ++ color_map.get("magenta").? ++ "\x1b[" ++ color_map.get("b").? ++ "[{s} tests]" ++ "\x1b[" ++ color_map.get("d").? ++ " ----\n\n" ++ "\x1b[0m", .{pkg.name});
-        //     var after = b.addLog("\x1b[" ++ color_map.get("d").? ++ "–––---\n\n" ++ "\x1b[0m", .{});
-        //     headers_step.dependOn(&before.step);
-        //     headers_step.dependOn(&test_.step);
-        //     headers_step.dependOn(&after.step);
-        // }
     }
 
     b.default_step.dependOn(obj_step);
@@ -493,67 +462,6 @@ pub fn build(b: *Build) !void {
 
 pub var original_make_fn: ?*const fn (step: *std.build.Step) anyerror!void = null;
 
-// Due to limitations in std.build.Builder
-// we cannot use this with debugging
-// so I am leaving this here for now, with the eventual intent to switch to std.build.Builder
-// but it is dead code
-pub fn linkObjectFiles(b: *Build, obj: *CompileStep, target: anytype) !void {
-    if (target.getOsTag() == .freestanding)
-        return;
-    var dirs_to_search = std.BoundedArray([]const u8, 32).init(0) catch unreachable;
-    const arm_brew_prefix: []const u8 = "/opt/homebrew";
-    const x86_brew_prefix: []const u8 = "/usr/local";
-    try dirs_to_search.append(b.env_map.get("BUN_DEPS_OUT_DIR") orelse b.env_map.get("BUN_DEPS_DIR") orelse @as([]const u8, b.pathFromRoot("src/deps")));
-    if (target.getOsTag() == .macos) {
-        if (target.getCpuArch().isAARCH64()) {
-            try dirs_to_search.append(comptime arm_brew_prefix ++ "/opt/icu4c/lib/");
-        } else {
-            try dirs_to_search.append(comptime x86_brew_prefix ++ "/opt/icu4c/lib/");
-        }
-    }
-
-    if (b.env_map.get("JSC_LIB")) |jsc| {
-        try dirs_to_search.append(jsc);
-    }
-
-    var added = std.AutoHashMap(u64, void).init(b.allocator);
-
-    const files_we_care_about = std.ComptimeStringMap([]const u8, .{
-        .{ "libmimalloc.o", "libmimalloc.o" },
-        .{ "libz.a", "libz.a" },
-        .{ "libarchive.a", "libarchive.a" },
-        .{ "libssl.a", "libssl.a" },
-        .{ "picohttpparser.o", "picohttpparser.o" },
-        .{ "libcrypto.boring.a", "libcrypto.boring.a" },
-        .{ "libicuuc.a", "libicuuc.a" },
-        .{ "libicudata.a", "libicudata.a" },
-        .{ "libicui18n.a", "libicui18n.a" },
-        .{ "libJavaScriptCore.a", "libJavaScriptCore.a" },
-        .{ "libWTF.a", "libWTF.a" },
-        .{ "libbmalloc.a", "libbmalloc.a" },
-        .{ "liblolhtml.a", "liblolhtml.a" },
-        .{ "uSockets.a", "uSockets.a" },
-    });
-
-    for (dirs_to_search.slice()) |deps_path| {
-        var deps_dir = std.fs.cwd().openIterableDir(deps_path, .{}) catch continue;
-        var iterator = deps_dir.iterate();
-        obj.addIncludePath(deps_path);
-        obj.addLibraryPath(deps_path);
-
-        while (iterator.next() catch null) |entr| {
-            const entry: std.fs.IterableDir.Entry = entr;
-            if (files_we_care_about.get(entry.name)) |obj_name| {
-                var has_added = try added.getOrPut(std.hash.Wyhash.hash(0, obj_name));
-                if (!has_added.found_existing) {
-                    var paths = [_][]const u8{ deps_path, obj_name };
-                    obj.addObjectFile(try std.fs.path.join(b.allocator, &paths));
-                }
-            }
-        }
-    }
-}
-
 pub fn configureObjectStep(b: *std.build.Builder, obj: *CompileStep, comptime Target: type, target: Target, main_pkg_path: []const u8) !void {
     obj.setMainPkgPath(main_pkg_path);
 

docs/api/binary-data.md

@@ -0,0 +1,988 @@
+This page is intended as an introduction to working with binary data in JavaScript. Bun implements a number of data types and utilities for working with binary data, most of which are Web-standard. Any Bun-specific APIs will be noted as such.
+
+Below is a quick "cheat sheet" that doubles as a table of contents. Click an item in the left column to jump to that section.
+
+{% table %}
+
+---
+
+- [`TypedArray`](#typedarray)
+- A family of classes that provide an `Array`-like interface for interacting with binary data. Includes `Uint8Array`, `Uint16Array`, `Int8Array`, and more.
+
+---
+
+- [`Buffer`](#buffer)
+- A subclass of `Uint8Array` that implements a wide range of convenience methods. Unlike the other elements in this table, this is a Node.js API (which Bun implements). It can't be used in the browser.
+
+---
+
+- [`DataView`](#dataview)
+- A class that provides a `get/set` API for writing some number of bytes to an `ArrayBuffer` at a particular byte offset. Often used reading or writing binary protocols.
+
+---
+
+- [`Blob`](#blob)
+- A readonly blob of binary data usually representing a file. Has a MIME `type`, a `size`, and methods for converting to `ArrayBuffer`, `ReadableStream`, and string.
+
+---
+
+<!-- - [`File`](#file)
+- _Browser only_. A subclass of `Blob` that represents a file. Has a `name` and `lastModified` timestamp. There is experimental support in Node.js v20; Bun does not support `File` yet; most of its functionality is provided by `BunFile`.
+
+--- -->
+
+- [`BunFile`](#bunfile)
+- _Bun only_. A subclass of `Blob` that represents a lazily-loaded file on disk. Created with `Bun.file(path)`.
+
+{% /table %}
+
+## `ArrayBuffer` and views
+
+Until 2009, there was no language-native way to store and manipulate binary data in JavaScript. ECMAScript v5 introduced a range of new mechanisms for this. The most fundamental building block is `ArrayBuffer`, a simple data structure that represents a sequence of bytes in memory.
+
+```ts
+// this buffer can store 8 bytes
+const buf = new ArrayBuffer(8);
+```
+
+Despite the name, it isn't an array and supports none of the array methods and operators one might expect. In fact, there is no way to directly read or write values from an `ArrayBuffer`. There's very little you can do with one except check its size and create "slices" from it.
+
+```ts
+const buf = new ArrayBuffer(8);
+
+buf.byteLength; // => 8
+
+const slice = buf.slice(0, 4); // returns new ArrayBuffer
+slice.byteLength; // => 4
+```
+
+To do anything interesting we need a construct known as a "view". A view is a class that _wraps_ an `ArrayBuffer` instance and lets you read and manipulate the underlying data. There are two types of views: _typed arrays_ and `DataView`.
+
+### `DataView`
+
+The `DataView` class is a lower-level interface for reading and manipulating the data in an `ArrayBuffer`.
+
+Below we create a new `DataView` and set the first byte to 5.
+
+```ts
+const buf = new ArrayBuffer(4);
+// [0x0, 0x0, 0x0, 0x0]
+
+const dv = new DataView(buf);
+dv.setUint8(0, 3); // write value 3 at byte offset 0
+dv.getUint8(0); // => 3
+// [0x11, 0x0, 0x0, 0x0]
+```
+
+Now lets write a `Uint16` at byte offset `1`. This requires two bytes. We're using the value `513`, which is `2 * 256 + 1`; in bytes, that's `00000010 00000001`.
+
+```ts
+dv.setUint16(1, 513);
+// [0x11, 0x10, 0x1, 0x0]
+
+console.log(dv.getUint16(1)); // => 513
+```
+
+We've now assigned a value to the first three bytes in our underlying `ArrayBuffer`. Even though the second and third bytes were created using `setUint16()`, we can still read each of its component bytes using `getUint8()`.
+
+```ts
+console.log(dv.getUint8(1)); // => 2
+console.log(dv.getUint8(2)); // => 1
+```
+
+Attempting to write a value that requires more space than is available in the underlying `ArrayBuffer` will cuase an error. Below we attempt to write a `Float64` (which requires 8 bytes) at byte offset `0`, but there are only four total bytes in the buffer.
+
+```ts
+dv.setFloat64(0, 3.1415);
+// ^ RangeError: Out of bounds access
+```
+
+The following methods are available on `DataView`:
+
+{% table %}
+
+- Getters
+- Setters
+
+---
+
+- [`getBigInt64()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView/getBigInt64)
+- [`setBigInt64()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView/setBigInt64)
+
+---
+
+- [`getBigUint64()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView/getBigUint64)
+- [`setBigUint64()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView/setBigUint64)
+
+---
+
+- [`getFloat32()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView/getFloat32)
+- [`setFloat32()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView/setFloat32)
+
+---
+
+- [`getFloat64()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView/getFloat64)
+- [`setFloat64()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView/setFloat64)
+
+---
+
+- [`getInt16()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView/getInt16)
+- [`setInt16()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView/setInt16)
+
+---
+
+- [`getInt32()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView/getInt32)
+- [`setInt32()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView/setInt32)
+
+---
+
+- [`getInt8()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView/getInt8)
+- [`setInt8()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView/setInt8)
+
+---
+
+- [`getUint16()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView/getUint16)
+- [`setUint16()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView/setUint16)
+
+---
+
+- [`getUint32()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView/getUint32)
+- [`setUint32()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView/setUint32)
+
+---
+
+- [`getUint8()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView/getUint8)
+- [`setUint8()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView/setUint8)
+
+{% /table %}
+
+### `TypedArray`
+
+Typed arrays are a family of classes that provide an `Array`-like interface for interacting with data in an `ArrayBuffer`. Whereas a `DataView` lets you write numbers of varying size at a particular offset, a `TypedArray` interprets the underlying bytes as an array of numbers, each of a fixed size.
+
+{% callout %}
+**Note** — It's common to refer to this family of classes collectively by their shared superclass `TypedArray`. This class as _internal_ to JavaScript; you can't directly create instances of it, and `TypedArray` is not defined in the global scope. Think of it as an `interface` or an abstract class.
+{% /callout %}
+
+```ts
+const buffer = new ArrayBuffer(3);
+const arr = new Uint8Array(buffer);
+
+// contents are initialized to zero
+console.log(arr); // Uint8Array(3) [0, 0, 0]
+
+// assign values like an array
+arr[0] = 0;
+arr[1] = 10;
+arr[2] = 255;
+arr[3] = 255; // no-op, out of bounds
+```
+
+While an `ArrayBuffer` is a generic sequence of bytes, these typed array classes interpret the bytes as an array of numbers of a given byte size.
+The top row contains the raw bytes, and the later rows contain how these bytes will be interpreted when _viewed_ using different typed array classes.
+
+The following classes are typed arrays, along with a description of how they interpret the bytes in an `ArrayBuffer`:
+
+{% table %}
+
+- Class
+- Description
+
+---
+
+- [`Uint8Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array)
+- Every one (1) byte is interpreted as an unsigned 8-bit integer. Range 0 to 255.
+
+---
+
+- [`Uint16Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint16Array)
+- Every two (2) bytes are interpreted as an unsigned 16-bit integer. Range 0 to 65535.
+
+---
+
+- [`Uint32Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint32Array)
+- Every four (4) bytes are interpreted as an unsigned 32-bit integer. Range 0 to 4294967295.
+
+---
+
+- [`Int8Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Int8Array)
+- Every one (1) byte is interpreted as a signed 8-bit integer. Range -128 to 127.
+
+---
+
+- [`Int16Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Int16Array)
+- Every two (2) bytes are interpreted as a signed 16-bit integer. Range -32768 to 32767.
+
+---
+
+- [`Int32Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Int32Array)
+- Every four (4) bytes are interpreted as a signed 32-bit integer. Range -2147483648 to 2147483647.
+
+---
+
+- [`Float32Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Float32Array)
+- Every four (4) bytes are interpreted as a 32-bit floating point number. Range -3.4e38 to 3.4e38.
+
+---
+
+- [`Float64Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Float64Array)
+- Every eight (8) bytes are interpreted as a 64-bit floating point number. Range -1.7e308 to 1.7e308.
+
+---
+
+- [`BigInt64Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigInt64Array)
+- Every eight (8) bytes are interpreted as an unsigned `BigInt`. Range -9223372036854775808 to 9223372036854775807 (though `BigInt` is capable of representing larger numbers).
+
+---
+
+- [`BigUint64Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigUint64Array)
+- Every eight (8) bytes are interpreted as an unsigned `BigInt`. Range 0 to 18446744073709551615 (though `BigInt` is capable of representing larger numbers).
+
+---
+
+- [`Uint8ClampedArray`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8ClampedArray)
+- Same as `Uint8Array`, but automatically "clamps" to the range 0-255 when assigning a value to an element.
+
+{% /table %}
+
+The table below demonstrates how the bytes in an `ArrayBuffer` are interpreted when viewed using different typed array classes.
+
+{% table %}
+
+---
+
+- `ArrayBuffer`
+- `00000000`
+- `00000001`
+- `00000010`
+- `00000011`
+- `00000100`
+- `00000101`
+- `00000110`
+- `00000111`
+
+---
+
+- `Uint8Array`
+- 0
+- 1
+- 2
+- 3
+- 4
+- 5
+- 6
+- 7
+
+---
+
+- `Uint16Array`
+- 256 (`1 * 256 + 0`) {% colspan=2 %}
+- 770 (`3 * 256 + 2`) {% colspan=2 %}
+- 1284 (`5 * 256 + 4`) {% colspan=2 %}
+- 1798 (`7 * 256 + 6`) {% colspan=2 %}
+
+---
+
+- `Uint32Array`
+- 50462976 {% colspan=4 %}
+- 117835012 {% colspan=4 %}
+
+---
+
+- `BigUint64Array`
+- 506097522914230528n {% colspan=8 %}
+
+{% /table %}
+
+To create a typed array from a pre-defined `ArrayBuffer`:
+
+```ts
+// create typed array from ArrayBuffer
+const buf = new ArrayBuffer(10);
+const arr = new Uint8Array(buf);
+
+arr[0] = 30;
+arr[1] = 60;
+
+// all elements are initialized to zero
+console.log(arr); // => Uint8Array(10) [ 30, 60, 0, 0, 0, 0, 0, 0, 0, 0 ];
+```
+
+If we tried to instantiate a `Uint32Array` from this same `ArrayBuffer`, we'd get an error.
+
+```ts
+const buf = new ArrayBuffer(10);
+const arr = new Uint32Array(buf);
+//          ^  RangeError: ArrayBuffer length minus the byteOffset
+//             is not a multiple of the element size
+```
+
+A `Uint32` value requires four bytes (16 bits). Because the `ArrayBuffer` is 10 bytes long, there's no way to cleanly divide its contents into 4-byte chunks.
+
+To fix this, we can create a typed array over a particular "slice" of an `ArrayBuffer`. The `Uint16Array` below only "views" the _first_ 8 bytes of the underlying `ArrayBuffer`. To achieve these, we specify a `byteOffset` of `0` and a `length` of `2`, which indicates the number of `Uint32` numbers we want our array to hold.
+
+```ts
+// create typed array from ArrayBuffer slice
+const buf = new ArrayBuffer(10);
+const arr = new Uint32Array(buf, 0, 2);
+
+/*
+  buf    _ _ _ _ _ _ _ _ _ _    10 bytes
+  arr   [_______,_______]       2 4-byte elements
+*/
+
+arr.byteOffset; // 0
+arr.length; // 2
+```
+
+You don't need to explicitly create an `ArrayBuffer` instance; you can instead directly specify a length in the typed array constructor:
+
+```ts
+const arr2 = new Uint8Array(5);
+
+// all elements are initialized to zero
+// => Uint8Array(5) [0, 0, 0, 0, 0]
+```
+
+Typed arrays can also be instantiated directly from an array of numbers, or another typed array:
+
+```ts
+// from an array of numbers
+const arr1 = new Uint8Array([0, 1, 2, 3, 4, 5, 6, 7]);
+arr1[0]; // => 0;
+arr1[7]; // => 7;
+
+// from another typed array
+const arr2 = new Uint8Array(arr);
+```
+
+Broadly speaking, typed arrays provide the same methods as regular arrays, with a few exceptions. For example, `push` and `pop` are not available on typed arrays, because they would require resizing the underlying `ArrayBuffer`.
+
+```ts
+const arr = new Uint8Array([0, 1, 2, 3, 4, 5, 6, 7]);
+
+// supports common array methods
+arr.filter(n => n > 128); // Uint8Array(1) [255]
+arr.map(n => n * 2); // Uint8Array(8) [0, 2, 4, 6, 8, 10, 12, 14]
+arr.reduce((acc, n) => acc + n, 0); // 28
+arr.forEach(n => console.log(n)); // 0 1 2 3 4 5 6 7
+arr.every(n => n < 10); // true
+arr.find(n => n > 5); // 6
+arr.includes(5); // true
+arr.indexOf(5); // 5
+```
+
+Refer to the [MDN documentation](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray) for more information on the properties and methods of typed arrays.
+
+### `Uint8Array`
+
+It's worth specifically highlighting `Uint8Array`, as it represents a classic "byte array"—a sequence of 8-bit unsigned integers between 0 and 255. This is the most common typed array you'll encounter in JavaScript.
+
+It is the return value of [`TextEncoder#encode`](https://developer.mozilla.org/en-US/docs/Web/API/TextEncoder), and the input type of [`TextDecoder#decode`](https://developer.mozilla.org/en-US/docs/Web/API/TextDecoder), two utility classes designed to translate strings and various binary encodings, most notably `"utf-8"`.
+
+```ts
+const encoder = new TextEncoder();
+const bytes = encoder.encode("hello world");
+// => Uint8Array(11) [ 104, 101, 108, 108, 111, 32, 119, 111, 114, 108, 100 ]
+
+const decoder = new TextDecoder();
+const text = decoder.decode(bytes);
+// => hello world
+```
+
+### `Buffer`
+
+Bun implements `Buffer`, a Node.js API for working with binary data that pre-dates the introduction of typed arrays in the JavaScript spec. It has since been re-implemented as a subclass of `Uint8Array`. It provides a wide range of methods, including several Array-like and `DataView`-like methods.
+
+```ts
+const buf = Buffer.from("hello world");
+// => Buffer(16) [ 116, 104, 105, 115, 32, 105, 115, 32, 97, 32, 115, 116, 114, 105, 110, 103 ]
+
+buf.length; // => 11
+buf[0]; // => 104, ascii for 'h'
+buf.writeUInt8(72, 0); // => ascii for 'H'
+
+console.log(buf.toString());
+// => Hello world
+```
+
+For complete documentation, refer to the [Node.js documentation](https://nodejs.org/api/buffer.html).
+
+## `Blob`
+
+`Blob` is a Web API commonly used for representing files. `Blob` was initially implemented in browsers (unlike `ArrayBuffer` which is part of JavaScript itself), but it is now supported in Node and Bun.
+
+It isn't common to directly create `Blob` instances. More often, you'll recieve instances of `Blob` from an external source (like an `<input type="file">` element in the browser) or library. That said, it is possible to create a `Blob` from one or more string or binary "blob parts".
+
+```ts
+const blob = new Blob(["<html>Hello</html>"], {
+  type: "text/html",
+});
+
+blob.type; // => text/html
+blob.size; // => 19
+```
+
+These parts can be `string`, `ArrayBuffer`, `TypedArray`, `DataView`, or other `Blob` instances. The blob parts are concatenated together in the order they are provided.
+
+```ts
+const blob = new Blob([
+  "<html>",
+  new Blob(["<body>"]),
+  new Uint8Array([104, 101, 108, 108, 111]), // "hello" in binary
+  "</body></html>",
+]);
+```
+
+The contents of a `Blob` can be asynchronously read in various formats.
+
+```ts
+await blob.text(); // => <html><body>hello</body></html>
+await blob.arrayBuffer(); // => ArrayBuffer (copies contents)
+await blob.stream(); // => ReadableStream
+```
+
+### `BunFile`
+
+`BunFile` is a subclass of `Blob` used to represent a lazily-loaded file on disk. Like `File`, it adds a `name` and `lastModified` property. Unlike `File`, it does not require the file to be loaded into memory.
+
+```ts
+const file = Bun.file("index.txt");
+// => BunFile
+```
+
+### `File`
+
+{% callout %}
+Browser only. Experimental support in Node.js 20.
+{% /callout %}
+
+[`File`](https://developer.mozilla.org/en-US/docs/Web/API/File) is a subclass of `Blob` that adds a `name` and `lastModified` property. It's commonly used in the browser to represent files uploaded via a `<input type="file">` element. Node.js and Bun implement `File`.
+
+```ts
+// on browser!
+// <input type="file" id="file" />
+
+const files = document.getElementById("file").files;
+// => File[]
+```
+
+```ts
+const file = new File(["<html>Hello</html>"], "index.html", {
+  type: "text/html",
+});
+```
+
+Refer to the [MDN documentation](https://developer.mozilla.org/en-US/docs/Web/API/Blob) for complete docs information.
+
+## Streams
+
+Streams are an important abstraction for working with binary data without loading it all into memory at once. They are commonly used for reading and writing files, sending and receiving network requests, and processing large amounts of data.
+
+Bun implements the Web APIs [`ReadableStream`](https://developer.mozilla.org/en-US/docs/Web/API/ReadableStream) and [`WritableStream`](https://developer.mozilla.org/en-US/docs/Web/API/ReadableStream).
+
+{% callout %}
+Bun also implements the `node:stream` module, including [`Readable`](https://nodejs.org/api/stream.html#stream_readable_streams), [`Writable`](https://nodejs.org/api/stream.html#stream_writable_streams), and [`Duplex`](https://nodejs.org/api/stream.html#stream_duplex_and_transform_streams). For complete documentation, refer to the Node.js docs.
+{% /callout %}
+
+To create a simple readable stream:
+
+```ts
+const stream = new ReadableStream({
+  start(controller) {
+    controller.enqueue("hello");
+    controller.enqueue("world");
+    controller.close();
+  },
+});
+```
+
+The contents of this stream can be read chunk-by-chunk with `for await` syntax.
+
+```ts
+for await (const chunk of stream) {
+  console.log(chunk);
+  // => "hello"
+  // => "world"
+}
+```
+
+For a more complete discusson of streams in Bun, see [API > Streams](/docs/api/streams).
+
+## Conversion
+
+Converting from one binary format to another is a common task. This section is intended as a reference.
+
+### From `ArrayBuffer`
+
+Since `ArrayBuffer` stores the data that underlies other binary structures like `TypedArray`, the snippets below are not _converting_ from `ArrayBuffer` to another format. Instead, they are _creating_ a new instance using the data stored underlying data.
+
+#### To `TypedArray`
+
+```ts
+new Uint8Array(buf);
+```
+
+#### To `DataView`
+
+```ts
+new DataView(buf);
+```
+
+#### To `Buffer`
+
+```ts
+// create Buffer over entire ArrayBuffer
+Buffer.from(buf);
+
+// create Buffer over a slice of the ArrayBuffer
+Buffer.from(buf, 0, 10);
+```
+
+#### To `string`
+
+```ts
+new TextDecoder().decode(buf);
+```
+
+#### To `number[]`
+
+```ts
+Array.from(new Uint8Array(buf));
+```
+
+#### To `Blob`
+
+```ts
+new Blob([buf], { type: "text/plain" });
+```
+
+<!-- #### To `File`
+
+```ts
+new File([buf], "filename.txt", { type: "text/plain", lastModified: Date.now() });
+``` -->
+
+#### To `ReadableStream`
+
+The following snippet creates a `ReadableStream` and enqueues the entire `ArrayBuffer` as a single chunk.
+
+```ts
+new ReadableStream({
+  start(controller) {
+    controller.enqueue(buf);
+    controller.close();
+  },
+});
+```
+
+{% details summary="With chunking" %}
+To stream the `ArrayBuffer` in chunks, use a `Uint8Array` view and enqueue each chunk.
+
+```ts
+const view = new Uint8Array(buf);
+const chunkSize = 1024;
+
+new ReadableStream({
+  start(controller) {
+    for (let i = 0; i < view.length; i += chunkSize) {
+      controller.enqueue(view.slice(i, i + chunkSize));
+    }
+    controller.close();
+  },
+});
+```
+
+{% /details %}
+
+### From `TypedArray`
+
+#### To `ArrayBuffer`
+
+This retrieves the underlying `ArrayBuffer`. Note that a `TypedArray` can be a view of a _slice_ of the underlying buffer, so the sizes may differ.
+
+```ts
+arr.buffer;
+```
+
+#### To `DataView`
+
+To creates a `DataView` over the same byte range as the TypedArray.
+
+```ts
+new DataView(arr.buffer, arr.byteOffset, arr.byteLength);
+```
+
+#### To `Buffer`
+
+```ts
+Buffer.from(arr);
+```
+
+#### To `string`
+
+```ts
+new TextDecoder().decode(arr);
+```
+
+#### To `number[]`
+
+```ts
+Array.from(arr);
+```
+
+#### To `Blob`
+
+```ts
+new Blob([arr.buffer], { type: "text/plain" });
+```
+
+<!-- #### To `File`
+
+```ts
+new File([arr.buffer], "filename.txt", { type: "text/plain", lastModified: Date.now() });
+``` -->
+
+#### To `ReadableStream`
+
+```ts
+new ReadableStream({
+  start(controller) {
+    controller.enqueue(arr);
+    controller.close();
+  },
+});
+```
+
+{% details summary="With chunking" %}
+To stream the `ArrayBuffer` in chunks, split the `TypedArray` into chunks and enqueue each one individually.
+
+```ts
+new ReadableStream({
+  start(controller) {
+    for (let i = 0; i < arr.length; i += chunkSize) {
+      controller.enqueue(arr.slice(i, i + chunkSize));
+    }
+    controller.close();
+  },
+});
+```
+
+{% /details %}
+
+### From `DataView`
+
+#### To `ArrayBuffer`
+
+```ts
+view.buffer;
+```
+
+#### To `TypedArray`
+
+Only works if the `byteLength` of the `DataView` is a multiple of the `BYTES_PER_ELEMENT` of the `TypedArray` subclass.
+
+```ts
+new Uint8Array(view.buffer, view.byteOffset, view.byteLength);
+new Uint16Array(view.buffer, view.byteOffset, view.byteLength / 2);
+new Uint32Array(view.buffer, view.byteOffset, view.byteLength / 4);
+// etc...
+```
+
+#### To `Buffer`
+
+```ts
+Buffer.from(view.buffer, view.byteOffset, view.byteLength);
+```
+
+#### To `string`
+
+```ts
+new TextDecoder().decode(view);
+```
+
+#### To `number[]`
+
+```ts
+Array.from(view);
+```
+
+#### To `Blob`
+
+```ts
+new Blob([view.buffer], { type: "text/plain" });
+```
+
+<!-- #### To `File`
+
+```ts
+new File([view.buffer], "filename.txt", { type: "text/plain", lastModified: Date.now() });
+``` -->
+
+#### To `ReadableStream`
+
+```ts
+new ReadableStream({
+  start(controller) {
+    controller.enqueue(view.buffer);
+    controller.close();
+  },
+});
+```
+
+{% details summary="With chunking" %}
+To stream the `ArrayBuffer` in chunks, split the `DataView` into chunks and enqueue each one individually.
+
+```ts
+new ReadableStream({
+  start(controller) {
+    for (let i = 0; i < view.byteLength; i += chunkSize) {
+      controller.enqueue(view.buffer.slice(i, i + chunkSize));
+    }
+    controller.close();
+  },
+});
+```
+
+{% /details %}
+
+### From `Buffer`
+
+#### To `ArrayBuffer`
+
+```ts
+buf.buffer;
+```
+
+#### To `TypedArray`
+
+```ts
+new Uint8Array(buf);
+```
+
+#### To `DataView`
+
+```ts
+new DataView(buf.buffer, buf.byteOffset, buf.byteLength);
+```
+
+#### To `string`
+
+```ts
+buf.toString();
+```
+
+#### To `number[]`
+
+```ts
+Array.from(buf);
+```
+
+#### To `Blob`
+
+```ts
+new Blob([buf], { type: "text/plain" });
+```
+
+<!-- #### To `File`
+
+```ts
+new File([buf], "filename.txt", { type: "text/plain", lastModified: Date.now() });
+``` -->
+
+#### To `ReadableStream`
+
+```ts
+new ReadableStream({
+  start(controller) {
+    controller.enqueue(buf);
+    controller.close();
+  },
+});
+```
+
+{% details summary="With chunking" %}
+To stream the `ArrayBuffer` in chunks, split the `Buffer` into chunks and enqueue each one individually.
+
+```ts
+new ReadableStream({
+  start(controller) {
+    for (let i = 0; i < buf.length; i += chunkSize) {
+      controller.enqueue(buf.slice(i, i + chunkSize));
+    }
+    controller.close();
+  },
+});
+```
+
+{% /details %}
+
+### From `Blob`
+
+#### To `ArrayBuffer`
+
+The `Blob` class provides a convenience method for this purpose.
+
+```ts
+await blob.arrayBuffer();
+```
+
+#### To `TypedArray`
+
+```ts
+new Uint8Array(await blob.arrayBuffer());
+```
+
+#### To `DataView`
+
+```ts
+new DataView(await blob.arrayBuffer());
+```
+
+#### To `Buffer`
+
+```ts
+Buffer.from(await blob.arrayBuffer());
+```
+
+#### To `string`
+
+```ts
+await blob.text();
+```
+
+#### To `number[]`
+
+```ts
+Array.from(new Uint8Array(await blob.arrayBuffer()));
+```
+
+#### To `ReadableStream`
+
+```ts
+blob.stream();
+```
+
+<!-- ### From `File` -->
+
+### From `ReadableStream`
+
+It's common to use [`Response`](https://developer.mozilla.org/en-US/docs/Web/API/Response) as a convenient intermediate representation to make it easier to convert `ReadableStream` to other formats.
+
+```ts
+stream; // ReadableStream
+
+const buffer = new Response(stream).arrayBuffer();
+```
+
+However this approach is verbose and adds overhead that slows down overall performance unnecessarily. Bun implements a set of optimized convenience functions for converting `ReadableStream` various binary formats.
+
+#### To `ArrayBuffer`
+
+```ts
+// with Response
+new Response(stream).arrayBuffer();
+
+// with Bun function
+Bun.readableStreamToArrayBuffer(stream);
+```
+
+#### To `TypedArray`
+
+```ts
+// with Response
+const buf = await new Response(stream).arrayBuffer();
+new Uint8Array(buf);
+
+// with Bun function
+new Uint8Array(Bun.readableStreamToArrayBuffer(stream));
+```
+
+#### To `DataView`
+
+```ts
+// with Response
+const buf = await new Response(stream).arrayBuffer();
+new DataView(buf);
+
+// with Bun function
+new DataView(Bun.readableStreamToArrayBuffer(stream));
+```
+
+#### To `Buffer`
+
+```ts
+// with Response
+const buf = await new Response(stream).arrayBuffer();
+Buffer.from(buf);
+
+// with Bun function
+Buffer.from(Bun.readableStreamToArrayBuffer(stream));
+```
+
+#### To `string`
+
+```ts
+// with Response
+new Response(stream).text();
+
+// with Bun function
+await Bun.readableStreamToString(stream);
+```
+
+#### To `number[]`
+
+```ts
+// with Response
+const buf = await new Response(stream).arrayBuffer();
+Array.from(new Uint8Array(buf));
+
+// with Bun function
+Array.from(new Uint8Array(Bun.readableStreamToArrayBuffer(stream)));
+```
+
+Bun provides a utility for resolving a `ReadableStream` to an array of its chunks. Each chunk may be a string, typed array, or `ArrayBuffer`.
+
+```ts
+// with Bun function
+Bun.readableStreamToArray(stream);
+```
+
+#### To `Blob`
+
+```ts
+new Response(stream).blob();
+```
+
+<!-- #### To `File`
+
+```ts
+new Response(stream)
+  .blob()
+  .then(blob => new File([blob], "filename.txt", { type: "text/plain", lastModified: Date.now() }));
+``` -->
+
+#### To `ReadableStream`
+
+To split a `ReadableStream` into two streams that can be consumed independently:
+
+```ts
+const [a, b] = stream.tee();
+```
+
+<!-- - Use Buffer
+- TextEncoder
+- `Bun.ArrayBufferSink`
+- ReadableStream
+- AsyncIterator
+- TypedArray vs ArrayBuffer vs DataView
+- Bun.indexOfLine
+- “direct” readablestream
+  - readable stream has assumptions about
+  - its very generic
+  - all data is copies and queued
+  - direct : no queueing
+  - just a write function
+  - you can write strings
+  - more synchronous
+  - corking works better -->