esbuild-plugin-wasm

An asynchronous .wasm file loader for esbuild. This allows you to directly import .wasm files as if they were a javascript module, similar to how it works in Webpack.

This plugin follows the WebAssembly/ES Module Integration proposal for loading WebAssembly from a JavaScript import statement.

Requirements

esbuild >= 0.11.0
node >= 10.0.0

⚠️ Important Note ⚠️

This loader makes use of top-level await, which only has partial support in esbuild. For now, it is only supported with the esm output format, not the iife or cjs formats. See https://github.com/evanw/esbuild/issues/253

Installation

npm install --save-dev esbuild-plugin-wasm

yarn add --dev esbuild-plugin-wasm

Usage

Add it to your esbuild plugins list

<summary>CommonJS</summary> js // build.js const esbuild = require('esbuild') const { wasmLoader } = require('esbuild-plugin-wasm') esbuild.build({ ... plugins: [ wasmLoader() ] ... });

<summary>ESM</summary> js // build.js import esbuild from 'esbuild' import { wasmLoader } from 'esbuild-plugin-wasm' esbuild.build({ ... plugins: [ wasmLoader() ] ... });

<summary>Typescript</summary> ts // build.ts import esbuild from 'esbuild' import { wasmLoader } from 'esbuild-plugin-wasm' esbuild.build({ ... plugins: [ wasmLoader() ] ... });

Then import ad use your wasm in your project

<details>
<summary>CommonJS</summary>

```js
// app.js
const wasm = require("./lib.wasm");

console(wasm.add(1, 2));
```

</details>

<details>
<summary>ESM</summary>

```js
// app.js
import wasm from "./lib.wasm";

console(wasm.add(1, 2));
```

</details>

<details>
<summary>Typescript</summary>

```ts
// app.ts
import wasm from "./lib.wasm";

console(wasm.add(1, 2));
```

</details>

Configuration

wasmLoader({
    // (Default) Deferred mode copies the WASM binary to the output directory,
    // and then `fetch()`s it at runtime. This is the default mode.
    mode: 'deferred'

    // Embedded mode embeds the WASM binary in the javascript bundle as a
    // base64 string. Note this will greatly bloat the resulting bundle
    // (the binary will take up about 30% more space this way)
    mode: 'embedded'
})

パッケージの詳細