@jitl/quickjs-browser-debug-asyncify-wasm

ESModule for browsers or browser-like environments

This generated package is part of quickjs-emscripten. It contains a variant of the quickjs WASM library, and can be used with quickjs-emscripten-core.

import variant from "@jitl/quickjs-browser-debug-asyncify-wasm"
import { newQuickJSAsyncWASMModuleFromVariant } from "quickjs-emscripten-core"
const QuickJS = await newQuickJSAsyncWASMModuleFromVariant(variant)

This variant was built with the following settings:

Library: quickjs

The original bellard/quickjs library.

Release mode: 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.

Module system: esm

This variant exports an ESModule, which is standardized for browsers and more modern browser-like environments. It cannot be imported from CommonJS without shenanigans.

Extra async magic? Yes

Build run through the ASYNCIFY WebAssembly transform. Larger and slower. Allows synchronous calls from the 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!

Single-file, or separate .wasm file? wasm

Has a separate .wasm file. May offer better caching in your browser, and reduces the size of your JS bundle. If you have issues, try a 'singlefile' variant.

More details

Full variant JSON description:

{
  "library": "quickjs",
  "releaseMode": "debug",
  "syncMode": "asyncify",
  "emscriptenInclusion": "wasm",
  "description": "ESModule for browsers or browser-like environments",
  "emscriptenEnvironment": ["web", "worker"],
  "moduleSystem": "esm"
}

Variant-specific Emscripten build flags:

[
  "-s ASYNCIFY=1",
  "-DQTS_ASYNCIFY=1",
  "-DQTS_ASYNCIFY_DEFAULT_STACK_SIZE=81920",
  "-s ASYNCIFY_STACK_SIZE=81920",
  "-s ASYNCIFY_REMOVE=@$(BUILD_WRAPPER)/asyncify-remove.json",
  "-s ASYNCIFY_IMPORTS=@$(BUILD_WRAPPER)/asyncify-imports.json",
  "-lasync.js",
  "-O0",
  "-DQTS_DEBUG_MODE",
  "-gsource-map",
  "-s ASSERTIONS=1",
  "-s EXPORT_ES6=1",
  "-s ENVIRONMENT=web,worker",
  "-s ASYNCIFY_ADVISE=1",
  "-O3"
]