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const coreJSVersion = require('./node_modules/core-js/package.json').version;
let presets = [
[
'@babel/preset-env',
{
useBuiltIns: 'usage',
bugfixes: true,
corejs: { version: coreJSVersion, proposals: true },
modules: false,
},
],
];
// include stage 3 proposals
const plugins = [
'@babel/plugin-proposal-class-properties',
'@babel/plugin-proposal-json-strings',
'@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',
];
// Jest is running in node environment
const isJest = Boolean(process.env.JEST_WORKER_ID);
if (isJest) {
presets = [
[
'@babel/preset-env',
{
targets: {
node: 'current',
},
},
],
];
}
module.exports = { presets, plugins, sourceType: 'unambiguous' };
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