Using WebAssembly with React tutorial 作者:Richard Reedy:

npx create-react-app react-wasm-migration

安装 react-app-rewired 和 wasm-loader

npm install react-app-rewired wasm-loader -D

添加 config-overrides.js

const path = require('path');

module.exports = function override(config, env) {
  const wasmExtensionRegExp = /\.wasm$/;

  config.resolve.extensions.push('.wasm');

  config.module.rules.forEach(rule => {
    (rule.oneOf || []).forEach(oneOf => {
      if (oneOf.loader && oneOf.loader.indexOf('file-loader') >= 0) {
        // make file-loader ignore WASM files
        oneOf.exclude.push(wasmExtensionRegExp);
      }
    });
  });

  // add a dedicated loader for WASM
  config.module.rules.push({
    test: wasmExtensionRegExp,
    include: path.resolve(__dirname, 'src'),
    use: [{ loader: require.resolve('wasm-loader'), options: {} }]
  });

  return config;
};

更改CRA NPM脚本以使用 而不是 react-scripts :

"scripts": {
  "start": "react-app-rewired start",
  "build": "react-app-rewired build",
  "test": "react-app-rewired test"
}

npm install --save wasmlibfp

在JS代码中异步加载WASM:

WebAssembly must be loaded asynchronously ,所以您需要添加加载它的JS代码(我把这个放在 App.js

componentDidMount() {
  this.loadWasm();
}

loadWasm = async () => {
  try {
    const wasm = await import('external');
    this.setState({wasm});
  } catch(err) {
    console.error(`Unexpected error in loadWasm. [Message: ${err.message}]`);
  }
};

如果已加载wasm代码,请在应用程序中使用该代码:

render() {
  const { wasm = {} } = this.state;
  return (
    <div className="App">
      { wasm.doStuff && wasm.doStuff() }
    </div>
);

npm install --save wasmlibfp