gitlab-org--gitlab-foss/babel.config.js

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const BABEL_ENV = process.env.BABEL_ENV || process.env.NODE_ENV || null;
let presets = [
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[
'@babel/preset-env',
{
useBuiltIns: 'usage',
corejs: { version: 3, proposals: true },
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modules: false,
},
],
];
// include stage 3 proposals
const plugins = [
'@babel/plugin-syntax-import-meta',
'@babel/plugin-proposal-class-properties',
'@babel/plugin-proposal-json-strings',
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'@babel/plugin-proposal-private-methods',
// See: https://gitlab.com/gitlab-org/gitlab/-/issues/229146
'@babel/plugin-transform-arrow-functions',
// See: https://gitlab.com/gitlab-org/gitlab/-/issues/336216
'@babel/plugin-proposal-optional-chaining',
// See: https://gitlab.com/gitlab-org/gitlab/-/issues/336216
'@babel/plugin-proposal-nullish-coalescing-operator',
'lodash',
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];
// add code coverage tooling if necessary
if (BABEL_ENV === 'coverage') {
plugins.push([
'babel-plugin-istanbul',
{
exclude: ['app/assets/javascripts/locale/**/app.js'],
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},
]);
}
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// Jest is running in node environment, so we need additional plugins
const isJest = Boolean(process.env.JEST_WORKER_ID);
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if (isJest) {
plugins.push('@babel/plugin-transform-modules-commonjs');
/*
without the following, babel-plugin-istanbul throws an error:
https://gitlab.com/gitlab-org/gitlab-foss/issues/58390
*/
plugins.push('babel-plugin-dynamic-import-node');
presets = [
[
'@babel/preset-env',
{
targets: {
node: 'current',
},
},
],
];
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}
module.exports = { presets, plugins, sourceType: 'unambiguous' };