javascript Babel - 未定义 regeneratorRuntime，当使用 transform-async-to-generator 插件时
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/50907975/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Babel - regeneratorRuntime is not defined, when using transform-async-to-generator plugin
提问by dendog
I am not able to setup babel correctly for the usage of async / await.
我无法为 async / await 的使用正确设置 babel。
I am using babel 7 and webpack 4.
我正在使用 babel 7 和 webpack 4。
I do not want to use babel-polyfill if possible!
如果可能的话，我不想使用 babel-polyfill！
My babelrc file:
我的 babelrc 文件：
{
"presets": [[
"@babel/env",
{"modules": false}
]],
"plugins": [
"syntax-dynamic-import",
"transform-async-to-generator"
]
}
Code:
代码：
async function init() {
const loaderData = await initLoader();
initCmp(loaderData)
.then(initApi(loaderData.key))
.catch();
}
init();
And Error:
和错误：
refactor.main.js:18 Uncaught ReferenceError: regeneratorRuntime is not defined
at eval (refactor.main.js:18)
at eval (refactor.main.js:47)
at Object../client/refactor.main.js (cmp.bundle.js:312)
at __webpack_require__ (cmp.bundle.js:62)
at eval (main.js:6)
at Object../client/main.js (cmp.bundle.js:300)
at __webpack_require__ (cmp.bundle.js:62)
at cmp.bundle.js:179
at cmp.bundle.js:182
回答by makkabi
The latest documentation here is pretty clear: https://babeljs.io/docs/en/next/babel-plugin-transform-runtime
这里的最新文档非常清楚：https: //babeljs.io/docs/en/next/babel-plugin-transform-runtime
What worked for me is installing the two packages for build and for runtime (the final script for the browser):
对我有用的是安装用于构建和运行时的两个包（浏览器的最终脚本）：
npm install --save-dev @babel/plugin-transform-runtime
npm install --save-dev @babel/plugin-transform-runtime
npm install --save @babel/runtime
npm install --save @babel/runtime
In the plugin Array of my webpack configuration I just added '@babel/plugin-transform-runtime' without any options. (Please also have a look at the documentation linked above, since some options (that you might find in older tutorials or answers) have been removed.)
在我的 webpack 配置的插件数组中，我刚刚添加了 '@babel/plugin-transform-runtime' 没有任何选项。（另请查看上面链接的文档，因为某些选项（您可能会在较旧的教程或答案中找到）已被删除。）
plugins: [
'@babel/plugin-transform-runtime'
]
I now can use async functions without errors, and it didn't add much code in the production build.
我现在可以毫无错误地使用异步函数，并且它没有在生产版本中添加太多代码。
回答by goofballLogic
You also need the transform-runtimeplugin, so your .babelrc should ready:
你还需要这个transform-runtime插件，所以你的 .babelrc 应该准备好了：
{
"presets": [[
"@babel/env",
{"modules": false}
]],
"plugins": [
"syntax-dynamic-import",
"transform-runtime",
"transform-async-to-generator"
]
}
Note that you'll also need to npm install --save-dev transform-runtime
请注意，您还需要 npm install --save-dev transform-runtime
