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babel.config.js
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babel.config.js
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module.exports = function (api) {
api.cache(true)
return {
presets: [
[
'@babel/preset-env',
{
// useBuiltIns: 'usage',
// corejs: 3,
modules: false
// targets: {
// ie: '10'
// }
// useBuiltIns: 'usage'
}
],
// '@babel/preset-typescript'
[
'@babel/preset-typescript',
{
// allowDeclareFields: true,
// isTSX:true, //关键配置
// allExtensions: true, //关键配置
// allowNamespaces:true,
// onlyRemoveTypeImports:true
}
]
],
// ignore: [
// /\/core-js/,
// ],
// ignore: [/[\/\\]core-js/, /@babel[\/\\]runtime/],
// runtimeHelpers:true,
// 我们这边不做处理,交由外部处理
plugins: [
'@babel/proposal-class-properties',
'@babel/proposal-object-rest-spread',
// '@babel/runtime-corejs3/helpers/defineProperty',
// '@babel/runtime-corejs3/helpers/classCallCheck',
// '@babel/runtime-corejs3/helpers/createClass',
// '@babel/plugin-proposal-nullish-coalescing-operator',
// '@babel/plugin-proposal-optional-chaining',
[
// profill
// '@babel/plugin-transform-runtime'
'@babel/plugin-transform-runtime',
{
helpers: true,
// corejs: false,
// regenerator: false
corejs: 3
// useESModules: true
}
]
]
}
}