73 lines
2.6 KiB
TypeScript
73 lines
2.6 KiB
TypeScript
/**
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* Copyright (c) Microsoft Corporation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import type { BabelFileResult } from '@babel/core';
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import * as babel from '@babel/core';
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export { codeFrameColumns } from '@babel/code-frame';
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export { declare } from '@babel/helper-plugin-utils';
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export { types } from '@babel/core';
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export { parse } from '@babel/parser';
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import traverseFunction from '@babel/traverse';
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export const traverse = traverseFunction;
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export function babelTransform(filename: string, isTypeScript: boolean, isModule: boolean, scriptPreprocessor: string | undefined, additionalPlugin: babel.PluginObj): BabelFileResult {
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const plugins = [];
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if (isTypeScript) {
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plugins.push(
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[require('@babel/plugin-proposal-class-properties')],
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[require('@babel/plugin-proposal-numeric-separator')],
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[require('@babel/plugin-proposal-logical-assignment-operators')],
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[require('@babel/plugin-proposal-nullish-coalescing-operator')],
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[require('@babel/plugin-proposal-optional-chaining')],
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[require('@babel/plugin-proposal-private-methods')],
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[require('@babel/plugin-syntax-json-strings')],
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[require('@babel/plugin-syntax-optional-catch-binding')],
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[require('@babel/plugin-syntax-async-generators')],
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[require('@babel/plugin-syntax-object-rest-spread')],
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[require('@babel/plugin-proposal-export-namespace-from')]
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);
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} else {
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plugins.push([require('@babel/plugin-syntax-jsx')]);
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}
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if (!isModule) {
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plugins.push([require('@babel/plugin-transform-modules-commonjs')]);
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plugins.push([require('@babel/plugin-proposal-dynamic-import')]);
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}
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plugins.unshift(additionalPlugin);
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if (scriptPreprocessor)
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plugins.push([scriptPreprocessor]);
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return babel.transformFileSync(filename, {
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babelrc: false,
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configFile: false,
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assumptions: {
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// Without this, babel defines a top level function that
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// breaks playwright evaluates.
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setPublicClassFields: true,
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},
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presets: [
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[require('@babel/preset-typescript'), { onlyRemoveTypeImports: true }],
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],
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plugins,
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sourceMaps: 'both',
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} as babel.TransformOptions)!;
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}
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