diff --git a/src/bun.js/node/node_perf_hooks_histogram_binding.zig b/src/bun.js/node/node_perf_hooks_histogram_binding.zig
index fd2e86d9b4..d301c7c9ea 100644
--- a/src/bun.js/node/node_perf_hooks_histogram_binding.zig
+++ b/src/bun.js/node/node_perf_hooks_histogram_binding.zig
@@ -14,38 +14,38 @@ pub const RecordableHistogram = struct {
     delta_start: ?bun.timespec = null,
 
     const This = @This();
-    const PropertyGetter = fn (this: *This, globalThis: *JSC.JSGlobalObject) callconv(.C) JSC.JSValue;
+    const PropertyGetter = fn (this: *This, globalThis: *JSC.JSGlobalObject) JSC.JSValue;
 
-    pub fn min(this: *This, globalThis: *JSC.JSGlobalObject) callconv(.C) JSValue {
+    pub fn min(this: *This, globalThis: *JSC.JSGlobalObject) JSValue {
         return globalThis.toJS(this.hdrHist.min, .temporary);
     }
     pub const minBigInt = getterAsFn(min);
 
-    pub fn max(this: *This, globalThis: *JSC.JSGlobalObject) callconv(.C) JSValue {
+    pub fn max(this: *This, globalThis: *JSC.JSGlobalObject) JSValue {
         return globalThis.toJS(this.hdrHist.max, .temporary);
     }
     pub const maxBigInt = getterAsFn(max);
 
-    pub fn count(this: *This, globalThis: *JSC.JSGlobalObject) callconv(.C) JSValue {
+    pub fn count(this: *This, globalThis: *JSC.JSGlobalObject) JSValue {
         return globalThis.toJS(this.hdrHist.total_count, .temporary);
     }
     pub const countBigInt = getterAsFn(count);
 
-    pub fn mean(this: *This, globalThis: *JSC.JSGlobalObject) callconv(.C) JSValue {
+    pub fn mean(this: *This, globalThis: *JSC.JSGlobalObject) JSValue {
         if (this.hdrHist.mean()) |m| {
             return globalThis.toJS(m, .temporary);
         }
         return globalThis.toJS(std.math.nan(f64), .temporary);
     }
 
-    pub fn stddev(this: *This, globalThis: *JSC.JSGlobalObject) callconv(.C) JSValue {
+    pub fn stddev(this: *This, globalThis: *JSC.JSGlobalObject) JSValue {
         if (this.hdrHist.stddev()) |sd| {
             return globalThis.toJS(sd, .temporary);
         }
         return globalThis.toJS(std.math.nan(f64), .temporary);
     }
 
-    pub fn percentile(this: *This, globalThis: *JSC.JSGlobalObject, callframe: *JSC.CallFrame) callconv(.C) JSValue {
+    pub fn percentile(this: *This, globalThis: *JSC.JSGlobalObject, callframe: *JSC.CallFrame) callconv(JSC.conv) JSValue {
         const args = callframe.arguments(1).slice();
         if (args.len < 1) {
             globalThis.throwInvalidArguments("Expected query percent as argument", .{});
@@ -60,7 +60,7 @@ pub const RecordableHistogram = struct {
     }
     pub const percentileBigInt = percentile;
 
-    pub fn percentiles(this: *This, globalObject: *JSC.JSGlobalObject) callconv(.C) JSValue {
+    pub fn percentiles(this: *This, globalObject: *JSC.JSGlobalObject) JSValue {
 
         // 2 arrays with percent and value
         // make a cpp version of this file, extern C function. accepts array, length, creates search JSMap:: (search)
@@ -99,7 +99,7 @@ pub const RecordableHistogram = struct {
     // additional functions
 
     // record duration in nanoseconds
-    pub fn record(this: *This, globalThis: *JSC.JSGlobalObject, callframe: *JSC.CallFrame) callconv(.C) JSValue {
+    pub fn record(this: *This, globalThis: *JSC.JSGlobalObject, callframe: *JSC.CallFrame) callconv(JSC.conv) JSValue {
         const args = callframe.arguments(1).slice();
         if (args.len < 1) {
             globalThis.throwInvalidArguments("Expected the value to record as an argument", .{});
@@ -111,7 +111,7 @@ pub const RecordableHistogram = struct {
     }
 
     // record time since last call to recordDelta
-    pub fn recordDelta(this: *This, _: *JSC.JSGlobalObject, _: *JSC.CallFrame) callconv(.C) JSValue {
+    pub fn recordDelta(this: *This, _: *JSC.JSGlobalObject, _: *JSC.CallFrame) callconv(JSC.conv) JSValue {
         if (this.delta_start) |start| {
             const end = bun.timespec.now();
             const diff = end.duration(&start);
@@ -126,14 +126,14 @@ pub const RecordableHistogram = struct {
         return .undefined;
     }
 
-    pub fn reset(this: *This, globalThis: *JSC.JSGlobalObject, callframe: *JSC.CallFrame) callconv(.C) JSValue {
+    pub fn reset(this: *This, globalThis: *JSC.JSGlobalObject, callframe: *JSC.CallFrame) callconv(JSC.conv) JSValue {
         _ = globalThis;
         _ = callframe;
         this.hdrHist.reset();
         return .undefined;
     }
 
-    pub fn add(this: *This, globalThis: *JSC.JSGlobalObject, callframe: *JSC.CallFrame) callconv(.C) JSValue {
+    pub fn add(this: *This, globalThis: *JSC.JSGlobalObject, callframe: *JSC.CallFrame) callconv(JSC.conv) JSValue {
         const args = callframe.arguments(1).slice();
         if (args.len < 1) {
             globalThis.throwInvalidArguments("Expected other histogram to add as an argument", .{});
@@ -156,13 +156,13 @@ pub const RecordableHistogram = struct {
     fn getterAsFn(callback: fn (
         this: *This,
         globalThis: *JSC.JSGlobalObject,
-    ) callconv(.C) JSValue) fn (
+    ) JSValue) fn (
         this: *This,
         globalThis: *JSC.JSGlobalObject,
         _: *JSC.CallFrame,
-    ) callconv(.C) JSValue {
+    ) callconv(JSC.conv) JSValue {
         const outer = struct {
-            pub fn inner(this: *This, globalThis: *JSC.JSGlobalObject, _: *JSC.CallFrame) callconv(.C) JSValue {
+            pub fn inner(this: *This, globalThis: *JSC.JSGlobalObject, _: *JSC.CallFrame) callconv(JSC.conv) JSValue {
                 // we don't need the callframe, so we can just call the callback
                 return callback(this, globalThis);
             }
@@ -172,13 +172,13 @@ pub const RecordableHistogram = struct {
 
     // since we create this with bun.new, we need to have it be destroyable
     // our node.classes.ts has finalize=true to generate the call to finalize
-    pub fn finalize(this: *This) callconv(.C) void {
+    pub fn finalize(this: *This) callconv(JSC.conv) void {
         this.hdrHist.deinit();
         bun.destroy(this);
     }
 };
 
-fn createHistogram(globalThis: *JSC.JSGlobalObject, _: *JSC.CallFrame) callconv(.C) JSC.JSValue {
+fn createHistogram(globalThis: *JSC.JSGlobalObject, _: *JSC.CallFrame) callconv(JSC.conv) JSC.JSValue {
     const hdrHist = HDRHistogram.init(bun.default_allocator, .{}) catch |err| {
         globalThis.throwError(err, "failed to initialize histogram");
         return .zero;
@@ -187,7 +187,7 @@ fn createHistogram(globalThis: *JSC.JSGlobalObject, _: *JSC.CallFrame) callconv(
     return histogram.toJS(globalThis);
 }
 
-pub fn createPerfHooksHistogramBinding(global: *JSC.JSGlobalObject) callconv(.C) JSC.JSValue {
+pub fn createPerfHooksHistogramBinding(global: *JSC.JSGlobalObject) callconv(JSC.conv) JSC.JSValue {
     return JSC.JSFunction.create(
         global,
         "createHistogram",