Fixes #15403

src/node-fallbacks/path.js

@@ -3,5 +3,64 @@
  *
  * Imported on usage in `bun build --target=browser`
  */
-export * from "path-browserify";
-export * as default from "path-browserify";
+import * as PathModule from "path-browserify";
+
+const bindingPosix = PathModule;
+const bindingWin32 = PathModule;
+
+// path-browserify doesn't implement toNamespacedPath
+const toNamespacedPathPosix = function (a) {
+  return a;
+};
+// path-browserify doesn't implement parse
+const parseFn = function () {
+  throw new Error("Not implemented");
+};
+
+bindingPosix.parse ??= parseFn;
+bindingWin32.parse ??= parseFn;
+
+export const posix = {
+  resolve: bindingPosix.resolve.bind(bindingPosix),
+  normalize: bindingPosix.normalize.bind(bindingPosix),
+  isAbsolute: bindingPosix.isAbsolute.bind(bindingPosix),
+  join: bindingPosix.join.bind(bindingPosix),
+  relative: bindingPosix.relative.bind(bindingPosix),
+  toNamespacedPath: toNamespacedPathPosix,
+  dirname: bindingPosix.dirname.bind(bindingPosix),
+  basename: bindingPosix.basename.bind(bindingPosix),
+  extname: bindingPosix.extname.bind(bindingPosix),
+  format: bindingPosix.format.bind(bindingPosix),
+  parse: bindingPosix.parse.bind(bindingPosix),
+  sep: "/",
+  delimiter: ":",
+  win32: undefined,
+  posix: undefined,
+  _makeLong: toNamespacedPathPosix,
+};
+export const win32 = {
+  sep: "\\",
+  delimiter: ";",
+  win32: undefined,
+  ...posix,
+  posix,
+};
+posix.win32 = win32.win32 = win32;
+posix.posix = posix;
+
+export default posix;
+export const {
+  resolve,
+  normalize,
+  isAbsolute,
+  join,
+  relative,
+  toNamespacedPath,
+  dirname,
+  basename,
+  extname,
+  format,
+  parse,
+  sep,
+  delimiter,
+} = posix;