flipper-babel-transformer/lib/import-react.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
 */
Object.defineProperty(exports, "__esModule", { value: true });
const types_1 = require("@babel/types");
module.exports = () => ({
    name: 'infinity-import-react',
    visitor: {
        Program: {
            exit(path, state) {
                if (state.get('NEEDS_REACT')) {
                    path.unshiftContainer('body', [
                        (0, types_1.variableDeclaration)('var', [
                            (0, types_1.variableDeclarator)((0, types_1.identifier)('React'), (0, types_1.callExpression)((0, types_1.identifier)('require'), [(0, types_1.stringLiteral)('react')])),
                        ]),
                    ]);
                }
            },
        },
        ReferencedIdentifier(path, state) {
            // mark react as needing to be imported
            if (path.node.name === 'React' && !path.scope.getBinding('React')) {
                state.set('NEEDS_REACT', true);
            }
            // replace Buffer with require('buffer')
            if (path.node.name === 'Buffer' && !path.scope.getBinding('Buffer')) {
                path.replaceWith((0, types_1.memberExpression)((0, types_1.callExpression)((0, types_1.identifier)('require'), [(0, types_1.stringLiteral)('buffer')]), (0, types_1.identifier)('Buffer')));
            }
        },
    },
});
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