我有这些依赖项:
"devDependencies": {
"@types/node": "^4.0.27-alpha",
"babel-core": "^6.10.4",
"babel-loader": "^6.2.4",
"babel-polyfill": "^6.9.1",
"babel-preset-es2015": "^6.9.0",
"babel-preset-stage-0": "^6.5.0",
"ts-loader": "^0.8.2",
"typescript": "^2.0.0",
"webpack": "^1.13.1"
}
.babelrc
{
"presets": [
"es2015",
"stage-0"
]
}
tsconfig.json
{
"compilerOptions": {
"module": "commonjs",
"target": "es6",
"noImplicitAny": false,
"sourceMap": false,
"outDir": "built"
},
"exclude": [
"node_modules"
]
}
webpack.config.js
module.exports = {
entry: ['babel-polyfill', './src/'],
output: {
path: __dirname,
filename: './built/bundle.js',
},
resolve: {
modulesDirectories: ['node_modules'],
extensions: ['', '.js', '.ts'],
},
module: {
loaders: [{
test: /\.tsx?$/, loaders: ['ts-loader', 'babel-loader'], exclude: /node_modules/
}],
}
};
/src/index.ts
async function foo() {
const value = await bar();
console.log(value);
}
function bar() {
return new Promise((resolve, reject) => {
return resolve(4);
});
}
(async function run() {
await foo();
}());
使用此设置它确实有效,我可以构建并运行它(正确记录4)。但是我总是在webpack上遇到一些错误:
ERROR in ./src/index.ts
(4,32): error TS2304: Cannot find name 'regeneratorRuntime'.
ERROR in ./src/index.ts
(6,12): error TS2304: Cannot find name 'regeneratorRuntime'.
ERROR in ./src/index.ts
(31,451): error TS2346: Supplied parameters do not match any signature of call target.
ERROR in ./src/index.ts
(40,33): error TS2304: Cannot find name 'regeneratorRuntime'.
ERROR in ./src/index.ts
(41,12): error TS2304: Cannot find name 'regeneratorRuntime'.
它似乎与babel-polyfill
有关。
我错过了什么?
答案 0 :(得分:27)
从Babel 7开始,ts-loader
是不必要的,因为Babel 7 understands TypeScript。 TypeScript + Babel7 + Webpack setup are here的完整详细信息。
安装Babel的TypeScript支持。只有@babel/preset-typescript
是强制性的;其他三个添加了TypeScript支持的附加功能。
npm install --save-dev @babel/preset-typescript
npm install --save-dev @babel/preset-env
npm install --save-dev @babel/plugin-proposal-class-properties
npm install --save-dev @babel/plugin-proposal-object-rest-spread
配置其他.babelrc
插件和预设。
{
"presets": [
"@babel/preset-env",
"@babel/preset-typescript"
],
"plugins": [
"@babel/proposal-class-properties",
"@babel/proposal-object-rest-spread"
]
}
并更新您的webpack.config.js
(为清楚起见,省略了其他代码)。
module: {
rules: [
{
test: /\.(js|jsx|tsx|ts)$/,
exclude: /node_modules/,
loader: 'babel-loader'
}
]
},
resolve: {
extensions: ['*', '.js', '.jsx', '.tsx', '.ts'],
},
答案 1 :(得分:24)
装载程序始终从右到左执行,因此更改为
test: /\.tsx?$/, loaders: ['babel-loader', 'ts-loader'], exclude: /node_modules/
修复了该问题,因为它将首先运行ts-loader
。
完整的webpack.config.js文件
module.exports = {
entry: ['babel-polyfill', './src/'],
output: {
path: __dirname,
filename: './dist/index.js',
},
resolve: {
extensions: ['', '.js', '.ts'],
},
module: {
loaders: [{
test: /\.ts$/, loaders: ['babel-loader', 'ts-loader'], exclude: /node_modules/
}],
}
};
答案 2 :(得分:8)
(4,32):错误TS2304:找不到名称'regeneratorRuntime'。
这是babel
的输出被送到ts
的症状。此订单错误
使用此处所述的设置:http://blog.johnnyreilly.com/2015/12/es6-typescript-babel-react-flux-karma.html