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Upgrade bellard/quickjs to 2026-06-04 #266

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a08f2f4
Squashed 'vendor/quickjs/' changes from f113949..04be246
xnacly Jul 22, 2026
e088f67
Update vendored QuickJS to 2026-06-04 (04be246)
xnacly Jul 22, 2026
dfb1c69
Reapply webkit-wasm patch after subtree merge
xnacly Jul 22, 2026
04c170c
bump quickjs to 2026-06-04
xnacly Jul 22, 2026
8dfdea3
fix getOwnPropertyNames heap corruption from malloc/js_free mismatch
xnacly Jul 22, 2026
62ae207
disable quickjs custom small-block allocator under emscripten
xnacly Jul 22, 2026
2df7407
address review: trim comments, move changelog to v0.33.0 section
xnacly Jul 24, 2026
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6 changes: 6 additions & 0 deletions CHANGELOG.md
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@@ -1,5 +1,11 @@
# Changelog

## v0.33.0

- [#266](https://github.com/justjake/quickjs-emscripten/pull/266) Upgrade [bellard/quickjs](https://github.com/bellard/quickjs) to [2026-06-04+04be2460](https://github.com/bellard/quickjs/commit/04be246001599f5995fa2f2d8c91a0f198d3f34c). Review the [QuickJS changelog](https://github.com/bellard/quickjs/blob/04be246001599f5995fa2f2d8c91a0f198d3f34c/Changelog) for details.
- Fixed heap corruption in `getOwnPropertyNames` caused by a `malloc`/`js_free` mismatch that the new small-block allocator exposed; now uses `js_malloc`.
- Disabled QuickJS's new custom small-block allocator under Emscripten (`JS_MALLOC_LARGE_BLOCKS_ONLY`) so `setMemoryLimit` stays accurate. The release's micro-optimization speedups are unaffected.

## v0.32.0

- [#227](https://github.com/justjake/quickjs-emscripten/pull/227)
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3 changes: 2 additions & 1 deletion c/interface.c
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Expand Up @@ -926,7 +926,8 @@ MaybeAsync(JSValue *) QTS_GetOwnPropertyNames(JSContext *ctx, JSValue ***out_ptr
}
return jsvalue_to_heap(JS_GetException(ctx));
}
*out_ptrs = malloc(sizeof(JSValue) * total_props);
// Freed on the JS side with js_free, so allocate with js_malloc.
*out_ptrs = js_malloc(ctx, sizeof(JSValue *) * total_props);
for (int i = 0; i < total_props; i++) {
JSAtom atom = tab[i].atom;

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34 changes: 17 additions & 17 deletions packages/quickjs-emscripten-core/README.md
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2 changes: 1 addition & 1 deletion packages/variant-quickjs-asmjs-mjs-release-sync/README.md
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Expand Up @@ -17,7 +17,7 @@ This variant was built with the following settings:

The original [bellard/quickjs](https://github.com/bellard/quickjs) library.

Version [2025-09-13+f1139494](https://github.com/bellard/quickjs/commit/f1139494d18a2053630c5ed3384a42bb70db3c53) vendored to quickjs-emscripten on 2026-02-15.
Version [2026-06-04+04be2460](https://github.com/bellard/quickjs/commit/04be246001599f5995fa2f2d8c91a0f198d3f34c) vendored to quickjs-emscripten on 2026-07-22.

## Release mode: release

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2 changes: 1 addition & 1 deletion packages/variant-quickjs-asmjs-mjs-release-sync/src/index.ts
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Expand Up @@ -9,7 +9,7 @@ import { QuickJSFFI } from "./ffi.js"
*
* | Variable | Setting | Description |
* | -- | -- | -- |
* | library | quickjs | The original [bellard/quickjs](https://github.com/bellard/quickjs) library. Version [2025-09-13+f1139494](https://github.com/bellard/quickjs/commit/f1139494d18a2053630c5ed3384a42bb70db3c53) vendored to quickjs-emscripten on 2026-02-15. |
* | library | quickjs | The original [bellard/quickjs](https://github.com/bellard/quickjs) library. Version [2026-06-04+04be2460](https://github.com/bellard/quickjs/commit/04be246001599f5995fa2f2d8c91a0f198d3f34c) vendored to quickjs-emscripten on 2026-07-22. |
* | releaseMode | release | Optimized for performance; use when building/deploying your application. |
* | syncMode | sync | The default, normal build. Note that both variants support regular async functions. |
* | emscriptenInclusion | asmjs | The C library code is compiled to Javascript, no WebAssembly used. Sometimes called "asmjs". This is the slowest possible option, and is intended for constrained environments that do not support WebAssembly, like quickjs-for-quickjs. |
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2 changes: 1 addition & 1 deletion packages/variant-quickjs-singlefile-browser-debug-asyncify/README.md
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Expand Up @@ -17,7 +17,7 @@ This variant was built with the following settings:

The original [bellard/quickjs](https://github.com/bellard/quickjs) library.

Version [2025-09-13+f1139494](https://github.com/bellard/quickjs/commit/f1139494d18a2053630c5ed3384a42bb70db3c53) vendored to quickjs-emscripten on 2026-02-15.
Version [2026-06-04+04be2460](https://github.com/bellard/quickjs/commit/04be246001599f5995fa2f2d8c91a0f198d3f34c) vendored to quickjs-emscripten on 2026-07-22.

## Release mode: debug

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2 changes: 1 addition & 1 deletion packages/variant-quickjs-singlefile-browser-debug-asyncify/src/index.ts
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Expand Up @@ -8,7 +8,7 @@ import type { QuickJSAsyncVariant } from "@jitl/quickjs-ffi-types"
*
* | Variable | Setting | Description |
* | -- | -- | -- |
* | library | quickjs | The original [bellard/quickjs](https://github.com/bellard/quickjs) library. Version [2025-09-13+f1139494](https://github.com/bellard/quickjs/commit/f1139494d18a2053630c5ed3384a42bb70db3c53) vendored to quickjs-emscripten on 2026-02-15. |
* | library | quickjs | The original [bellard/quickjs](https://github.com/bellard/quickjs) library. Version [2026-06-04+04be2460](https://github.com/bellard/quickjs/commit/04be246001599f5995fa2f2d8c91a0f198d3f34c) vendored to quickjs-emscripten on 2026-07-22. |
* | releaseMode | debug | Enables assertions and memory sanitizers. Try to run your tests against debug variants, in addition to your preferred production variant, to catch more bugs. |
* | syncMode | asyncify | Build run through the ASYNCIFY WebAssembly transform. This imposes substantial size (2x the size of sync) and speed penalties (40% the speed of sync). In return, allows synchronous calls from the QuickJS WASM runtime to async functions on the host. The extra magic makes this variant slower than sync variants. Note that both variants support regular async functions. Only adopt ASYNCIFY if you need to! The [QuickJSAsyncRuntime](https://github.com/justjake/quickjs-emscripten/blob/main/doc/quickjs-emscripten/classes/QuickJSAsyncRuntime.md) and [QuickJSAsyncContext](https://github.com/justjake/quickjs-emscripten/blob/main/doc/quickjs-emscripten/classes/QuickJSAsyncContext.md) classes expose the ASYNCIFY-specific APIs. |
* | emscriptenInclusion | singlefile | The WASM runtime is included directly in the JS file. Use if you run into issues with missing .wasm files when building or deploying your app. |
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2 changes: 1 addition & 1 deletion packages/variant-quickjs-singlefile-browser-debug-sync/README.md
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Expand Up @@ -17,7 +17,7 @@ This variant was built with the following settings:

The original [bellard/quickjs](https://github.com/bellard/quickjs) library.

Version [2025-09-13+f1139494](https://github.com/bellard/quickjs/commit/f1139494d18a2053630c5ed3384a42bb70db3c53) vendored to quickjs-emscripten on 2026-02-15.
Version [2026-06-04+04be2460](https://github.com/bellard/quickjs/commit/04be246001599f5995fa2f2d8c91a0f198d3f34c) vendored to quickjs-emscripten on 2026-07-22.

## Release mode: debug

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2 changes: 1 addition & 1 deletion packages/variant-quickjs-singlefile-browser-debug-sync/src/index.ts
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Expand Up @@ -8,7 +8,7 @@ import type { QuickJSSyncVariant } from "@jitl/quickjs-ffi-types"
*
* | Variable | Setting | Description |
* | -- | -- | -- |
* | library | quickjs | The original [bellard/quickjs](https://github.com/bellard/quickjs) library. Version [2025-09-13+f1139494](https://github.com/bellard/quickjs/commit/f1139494d18a2053630c5ed3384a42bb70db3c53) vendored to quickjs-emscripten on 2026-02-15. |
* | library | quickjs | The original [bellard/quickjs](https://github.com/bellard/quickjs) library. Version [2026-06-04+04be2460](https://github.com/bellard/quickjs/commit/04be246001599f5995fa2f2d8c91a0f198d3f34c) vendored to quickjs-emscripten on 2026-07-22. |
* | releaseMode | debug | Enables assertions and memory sanitizers. Try to run your tests against debug variants, in addition to your preferred production variant, to catch more bugs. |
* | syncMode | sync | The default, normal build. Note that both variants support regular async functions. |
* | emscriptenInclusion | singlefile | The WASM runtime is included directly in the JS file. Use if you run into issues with missing .wasm files when building or deploying your app. |
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2 changes: 1 addition & 1 deletion packages/variant-quickjs-singlefile-browser-release-asyncify/README.md
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Expand Up @@ -17,7 +17,7 @@ This variant was built with the following settings:

The original [bellard/quickjs](https://github.com/bellard/quickjs) library.

Version [2025-09-13+f1139494](https://github.com/bellard/quickjs/commit/f1139494d18a2053630c5ed3384a42bb70db3c53) vendored to quickjs-emscripten on 2026-02-15.
Version [2026-06-04+04be2460](https://github.com/bellard/quickjs/commit/04be246001599f5995fa2f2d8c91a0f198d3f34c) vendored to quickjs-emscripten on 2026-07-22.

## Release mode: release

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2 changes: 1 addition & 1 deletion packages/variant-quickjs-singlefile-browser-release-asyncify/src/index.ts
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Expand Up @@ -8,7 +8,7 @@ import type { QuickJSAsyncVariant } from "@jitl/quickjs-ffi-types"
*
* | Variable | Setting | Description |
* | -- | -- | -- |
* | library | quickjs | The original [bellard/quickjs](https://github.com/bellard/quickjs) library. Version [2025-09-13+f1139494](https://github.com/bellard/quickjs/commit/f1139494d18a2053630c5ed3384a42bb70db3c53) vendored to quickjs-emscripten on 2026-02-15. |
* | library | quickjs | The original [bellard/quickjs](https://github.com/bellard/quickjs) library. Version [2026-06-04+04be2460](https://github.com/bellard/quickjs/commit/04be246001599f5995fa2f2d8c91a0f198d3f34c) vendored to quickjs-emscripten on 2026-07-22. |
* | releaseMode | release | Optimized for performance; use when building/deploying your application. |
* | syncMode | asyncify | Build run through the ASYNCIFY WebAssembly transform. This imposes substantial size (2x the size of sync) and speed penalties (40% the speed of sync). In return, allows synchronous calls from the QuickJS WASM runtime to async functions on the host. The extra magic makes this variant slower than sync variants. Note that both variants support regular async functions. Only adopt ASYNCIFY if you need to! The [QuickJSAsyncRuntime](https://github.com/justjake/quickjs-emscripten/blob/main/doc/quickjs-emscripten/classes/QuickJSAsyncRuntime.md) and [QuickJSAsyncContext](https://github.com/justjake/quickjs-emscripten/blob/main/doc/quickjs-emscripten/classes/QuickJSAsyncContext.md) classes expose the ASYNCIFY-specific APIs. |
* | emscriptenInclusion | singlefile | The WASM runtime is included directly in the JS file. Use if you run into issues with missing .wasm files when building or deploying your app. |
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2 changes: 1 addition & 1 deletion packages/variant-quickjs-singlefile-browser-release-sync/README.md
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Expand Up @@ -17,7 +17,7 @@ This variant was built with the following settings:

The original [bellard/quickjs](https://github.com/bellard/quickjs) library.

Version [2025-09-13+f1139494](https://github.com/bellard/quickjs/commit/f1139494d18a2053630c5ed3384a42bb70db3c53) vendored to quickjs-emscripten on 2026-02-15.
Version [2026-06-04+04be2460](https://github.com/bellard/quickjs/commit/04be246001599f5995fa2f2d8c91a0f198d3f34c) vendored to quickjs-emscripten on 2026-07-22.

## Release mode: release

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2 changes: 1 addition & 1 deletion packages/variant-quickjs-singlefile-browser-release-sync/src/index.ts
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Expand Up @@ -8,7 +8,7 @@ import type { QuickJSSyncVariant } from "@jitl/quickjs-ffi-types"
*
* | Variable | Setting | Description |
* | -- | -- | -- |
* | library | quickjs | The original [bellard/quickjs](https://github.com/bellard/quickjs) library. Version [2025-09-13+f1139494](https://github.com/bellard/quickjs/commit/f1139494d18a2053630c5ed3384a42bb70db3c53) vendored to quickjs-emscripten on 2026-02-15. |
* | library | quickjs | The original [bellard/quickjs](https://github.com/bellard/quickjs) library. Version [2026-06-04+04be2460](https://github.com/bellard/quickjs/commit/04be246001599f5995fa2f2d8c91a0f198d3f34c) vendored to quickjs-emscripten on 2026-07-22. |
* | releaseMode | release | Optimized for performance; use when building/deploying your application. |
* | syncMode | sync | The default, normal build. Note that both variants support regular async functions. |
* | emscriptenInclusion | singlefile | The WASM runtime is included directly in the JS file. Use if you run into issues with missing .wasm files when building or deploying your app. |
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2 changes: 1 addition & 1 deletion packages/variant-quickjs-singlefile-cjs-debug-asyncify/README.md
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Expand Up @@ -17,7 +17,7 @@ This variant was built with the following settings:

The original [bellard/quickjs](https://github.com/bellard/quickjs) library.

Version [2025-09-13+f1139494](https://github.com/bellard/quickjs/commit/f1139494d18a2053630c5ed3384a42bb70db3c53) vendored to quickjs-emscripten on 2026-02-15.
Version [2026-06-04+04be2460](https://github.com/bellard/quickjs/commit/04be246001599f5995fa2f2d8c91a0f198d3f34c) vendored to quickjs-emscripten on 2026-07-22.

## Release mode: debug

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2 changes: 1 addition & 1 deletion packages/variant-quickjs-singlefile-cjs-debug-asyncify/src/index.ts
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Expand Up @@ -8,7 +8,7 @@ import type { QuickJSAsyncVariant } from "@jitl/quickjs-ffi-types"
*
* | Variable | Setting | Description |
* | -- | -- | -- |
* | library | quickjs | The original [bellard/quickjs](https://github.com/bellard/quickjs) library. Version [2025-09-13+f1139494](https://github.com/bellard/quickjs/commit/f1139494d18a2053630c5ed3384a42bb70db3c53) vendored to quickjs-emscripten on 2026-02-15. |
* | library | quickjs | The original [bellard/quickjs](https://github.com/bellard/quickjs) library. Version [2026-06-04+04be2460](https://github.com/bellard/quickjs/commit/04be246001599f5995fa2f2d8c91a0f198d3f34c) vendored to quickjs-emscripten on 2026-07-22. |
* | releaseMode | debug | Enables assertions and memory sanitizers. Try to run your tests against debug variants, in addition to your preferred production variant, to catch more bugs. |
* | syncMode | asyncify | Build run through the ASYNCIFY WebAssembly transform. This imposes substantial size (2x the size of sync) and speed penalties (40% the speed of sync). In return, allows synchronous calls from the QuickJS WASM runtime to async functions on the host. The extra magic makes this variant slower than sync variants. Note that both variants support regular async functions. Only adopt ASYNCIFY if you need to! The [QuickJSAsyncRuntime](https://github.com/justjake/quickjs-emscripten/blob/main/doc/quickjs-emscripten/classes/QuickJSAsyncRuntime.md) and [QuickJSAsyncContext](https://github.com/justjake/quickjs-emscripten/blob/main/doc/quickjs-emscripten/classes/QuickJSAsyncContext.md) classes expose the ASYNCIFY-specific APIs. |
* | emscriptenInclusion | singlefile | The WASM runtime is included directly in the JS file. Use if you run into issues with missing .wasm files when building or deploying your app. |
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2 changes: 1 addition & 1 deletion packages/variant-quickjs-singlefile-cjs-debug-sync/README.md
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Expand Up @@ -17,7 +17,7 @@ This variant was built with the following settings:

The original [bellard/quickjs](https://github.com/bellard/quickjs) library.

Version [2025-09-13+f1139494](https://github.com/bellard/quickjs/commit/f1139494d18a2053630c5ed3384a42bb70db3c53) vendored to quickjs-emscripten on 2026-02-15.
Version [2026-06-04+04be2460](https://github.com/bellard/quickjs/commit/04be246001599f5995fa2f2d8c91a0f198d3f34c) vendored to quickjs-emscripten on 2026-07-22.

## Release mode: debug

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2 changes: 1 addition & 1 deletion packages/variant-quickjs-singlefile-cjs-debug-sync/src/index.ts
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Expand Up @@ -8,7 +8,7 @@ import type { QuickJSSyncVariant } from "@jitl/quickjs-ffi-types"
*
* | Variable | Setting | Description |
* | -- | -- | -- |
* | library | quickjs | The original [bellard/quickjs](https://github.com/bellard/quickjs) library. Version [2025-09-13+f1139494](https://github.com/bellard/quickjs/commit/f1139494d18a2053630c5ed3384a42bb70db3c53) vendored to quickjs-emscripten on 2026-02-15. |
* | library | quickjs | The original [bellard/quickjs](https://github.com/bellard/quickjs) library. Version [2026-06-04+04be2460](https://github.com/bellard/quickjs/commit/04be246001599f5995fa2f2d8c91a0f198d3f34c) vendored to quickjs-emscripten on 2026-07-22. |
* | releaseMode | debug | Enables assertions and memory sanitizers. Try to run your tests against debug variants, in addition to your preferred production variant, to catch more bugs. |
* | syncMode | sync | The default, normal build. Note that both variants support regular async functions. |
* | emscriptenInclusion | singlefile | The WASM runtime is included directly in the JS file. Use if you run into issues with missing .wasm files when building or deploying your app. |
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2 changes: 1 addition & 1 deletion packages/variant-quickjs-singlefile-cjs-release-asyncify/README.md
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Expand Up @@ -17,7 +17,7 @@ This variant was built with the following settings:

The original [bellard/quickjs](https://github.com/bellard/quickjs) library.

Version [2025-09-13+f1139494](https://github.com/bellard/quickjs/commit/f1139494d18a2053630c5ed3384a42bb70db3c53) vendored to quickjs-emscripten on 2026-02-15.
Version [2026-06-04+04be2460](https://github.com/bellard/quickjs/commit/04be246001599f5995fa2f2d8c91a0f198d3f34c) vendored to quickjs-emscripten on 2026-07-22.

## Release mode: release

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2 changes: 1 addition & 1 deletion packages/variant-quickjs-singlefile-cjs-release-asyncify/src/index.ts
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Expand Up @@ -8,7 +8,7 @@ import type { QuickJSAsyncVariant } from "@jitl/quickjs-ffi-types"
*
* | Variable | Setting | Description |
* | -- | -- | -- |
* | library | quickjs | The original [bellard/quickjs](https://github.com/bellard/quickjs) library. Version [2025-09-13+f1139494](https://github.com/bellard/quickjs/commit/f1139494d18a2053630c5ed3384a42bb70db3c53) vendored to quickjs-emscripten on 2026-02-15. |
* | library | quickjs | The original [bellard/quickjs](https://github.com/bellard/quickjs) library. Version [2026-06-04+04be2460](https://github.com/bellard/quickjs/commit/04be246001599f5995fa2f2d8c91a0f198d3f34c) vendored to quickjs-emscripten on 2026-07-22. |
* | releaseMode | release | Optimized for performance; use when building/deploying your application. |
* | syncMode | asyncify | Build run through the ASYNCIFY WebAssembly transform. This imposes substantial size (2x the size of sync) and speed penalties (40% the speed of sync). In return, allows synchronous calls from the QuickJS WASM runtime to async functions on the host. The extra magic makes this variant slower than sync variants. Note that both variants support regular async functions. Only adopt ASYNCIFY if you need to! The [QuickJSAsyncRuntime](https://github.com/justjake/quickjs-emscripten/blob/main/doc/quickjs-emscripten/classes/QuickJSAsyncRuntime.md) and [QuickJSAsyncContext](https://github.com/justjake/quickjs-emscripten/blob/main/doc/quickjs-emscripten/classes/QuickJSAsyncContext.md) classes expose the ASYNCIFY-specific APIs. |
* | emscriptenInclusion | singlefile | The WASM runtime is included directly in the JS file. Use if you run into issues with missing .wasm files when building or deploying your app. |
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2 changes: 1 addition & 1 deletion packages/variant-quickjs-singlefile-cjs-release-sync/README.md
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Expand Up @@ -17,7 +17,7 @@ This variant was built with the following settings:

The original [bellard/quickjs](https://github.com/bellard/quickjs) library.

Version [2025-09-13+f1139494](https://github.com/bellard/quickjs/commit/f1139494d18a2053630c5ed3384a42bb70db3c53) vendored to quickjs-emscripten on 2026-02-15.
Version [2026-06-04+04be2460](https://github.com/bellard/quickjs/commit/04be246001599f5995fa2f2d8c91a0f198d3f34c) vendored to quickjs-emscripten on 2026-07-22.

## Release mode: release

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2 changes: 1 addition & 1 deletion packages/variant-quickjs-singlefile-cjs-release-sync/src/index.ts
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Expand Up @@ -8,7 +8,7 @@ import type { QuickJSSyncVariant } from "@jitl/quickjs-ffi-types"
*
* | Variable | Setting | Description |
* | -- | -- | -- |
* | library | quickjs | The original [bellard/quickjs](https://github.com/bellard/quickjs) library. Version [2025-09-13+f1139494](https://github.com/bellard/quickjs/commit/f1139494d18a2053630c5ed3384a42bb70db3c53) vendored to quickjs-emscripten on 2026-02-15. |
* | library | quickjs | The original [bellard/quickjs](https://github.com/bellard/quickjs) library. Version [2026-06-04+04be2460](https://github.com/bellard/quickjs/commit/04be246001599f5995fa2f2d8c91a0f198d3f34c) vendored to quickjs-emscripten on 2026-07-22. |
* | releaseMode | release | Optimized for performance; use when building/deploying your application. |
* | syncMode | sync | The default, normal build. Note that both variants support regular async functions. |
* | emscriptenInclusion | singlefile | The WASM runtime is included directly in the JS file. Use if you run into issues with missing .wasm files when building or deploying your app. |
Expand Down
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