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// @ts-check

/** @type {import('@babel/core').ConfigFunction} */

module.exports = api => {

const isTest = api.env('test')

api.cache.forever()

return {

presets: [

[

'@babel/preset-env',

{

// Node (used for testing) doesn't support modules, so compile to CommonJS for testing.

modules: isTest ? 'commonjs' : false,

bugfixes: true,

useBuiltIns: 'entry',

corejs: 3,

},

],

'@babel/preset-typescript',

'@babel/preset-react',

],

plugins: [

'babel-plugin-lodash',

// Required to support typeorm decorators in ./cmd/precise-code-intel

['@babel/plugin-proposal-decorators', { legacy: true }],

// Node 12 (released 2019 Apr 23) supports these natively, but there seem to be issues when used with TypeScript.

['@babel/plugin-proposal-class-properties', { loose: true }],

],

}

}