flipper-babel-transformer/lib/transform.js

Babel transformer for Flipper plugins

"use strict";
/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @format
 */
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const generator_1 = __importDefault(require("@babel/generator"));
const parser_1 = require("@babel/parser");
const core_1 = require("@babel/core");
const flipper_env_1 = __importDefault(require("./flipper-env"));
const path_1 = require("path");
const jsParsePlugins = ['jsx'];
const tsParsePluins = ['jsx', 'typescript'];
const commonJsPlugin = [
    require('@babel/plugin-transform-modules-commonjs'),
    {
        strictMode: false,
    },
];
const dynamicRequiresPlugin = require('./dynamic-requires');
const typeScriptPlugin = require('@babel/plugin-transform-typescript');
const emotionPlugin = require('@emotion/babel-plugin');
const tsTransformPlugins = [
    typeScriptPlugin,
    commonJsPlugin,
    // Sourcemap disabled because
    // https://github.com/emotion-js/emotion/issues/1838
    [emotionPlugin, { autoLabel: 'always', sourceMap: false }],
];
const jsTransformPlugins = [
    commonJsPlugin,
    dynamicRequiresPlugin,
    [emotionPlugin, { autoLabel: 'always', sourceMap: false }],
];
function transform({ filename, options, src, presets, plugins, }) {
    filename = (0, path_1.resolve)(options.projectRoot, filename);
    presets = presets ?? [require('@babel/preset-react')];
    plugins = plugins ?? [];
    const isTypeScript = filename.endsWith('.tsx') || filename.endsWith('.ts');
    const ast = (0, parser_1.parse)(src, {
        sourceFilename: filename,
        plugins: isTypeScript ? tsParsePluins : jsParsePlugins,
        sourceType: 'module',
    });
    const transformed = (0, core_1.transformFromAstSync)(ast, src, {
        ast: true,
        babelrc: !filename.includes('node_modules'),
        code: false,
        comments: false,
        compact: false,
        root: options.projectRoot,
        filename,
        plugins: [
            ...(isTypeScript ? tsTransformPlugins : jsTransformPlugins),
            ...plugins,
        ],
        presets,
        sourceMaps: true,
        retainLines: !!flipper_env_1.default.FLIPPER_TEST_RUNNER,
    });
    if (!transformed) {
        throw new Error('Failed to transform');
    }
    const result = (0, generator_1.default)(
    // TODO: Fix this the next time the file is edited.
    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
    transformed.ast, {
        filename,
        sourceFileName: filename,
        sourceMaps: true,
        retainLines: !!flipper_env_1.default.FLIPPER_TEST_RUNNER,
    }, src);
    return {
        ast: transformed.ast,
        code: result.code,
        filename,
        map: result.map,
    };
}
exports.default = transform;
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