61 lines
1.6 KiB
JavaScript
61 lines
1.6 KiB
JavaScript
/* global module */
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module.exports = function (api) {
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var validEnv = ['development', 'test', 'production'];
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var currentEnv = api.env();
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var isDevelopmentEnv = api.env('development');
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var isProductionEnv = api.env('production');
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var isTestEnv = api.env('test');
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if (!validEnv.includes(currentEnv)) {
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throw new Error(
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'Please specify a valid `NODE_ENV` or ' +
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'`BABEL_ENV` environment variables. Valid values are "development", ' +
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'"test", and "production". Instead, received: ' +
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JSON.stringify(currentEnv) +
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'.',
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);
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}
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return {
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presets: [
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(isProductionEnv || isDevelopmentEnv || isTestEnv) && [
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'@babel/preset-env',
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{
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modules: false,
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targets: { browsers: '> 1%' },
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useBuiltIns: 'entry',
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corejs: { version: 3, proposals: false },
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exclude: ['transform-regenerator'],
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bugfixes: true,
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forceAllTransforms: true,
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},
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'preact',
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],
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].filter(Boolean),
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plugins: [
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'@babel/plugin-syntax-dynamic-import',
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isTestEnv && 'babel-plugin-dynamic-import-node',
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isTestEnv && '@babel/plugin-transform-modules-commonjs',
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'@babel/plugin-transform-destructuring',
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[
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'@babel/plugin-proposal-class-properties',
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{
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spec: true,
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},
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],
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[
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'@babel/plugin-proposal-object-rest-spread',
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{
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useBuiltIns: true,
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},
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],
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[
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'@babel/plugin-transform-react-jsx',
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{
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pragma: 'h',
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},
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],
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].filter(Boolean),
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};
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};
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