node-jest/scripts/babel-plugin-jest-require-o...

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/**
* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
'use strict';
const assert = require('assert');
/*
Replace
requireOutside('package')
with
require(require.resolve('package', {
[Symbol.for('jest-resolve-outside-vm-option')]: true,
}));
*/
const REQUIRE_OUTSIDE_FUNCTION_NAME = 'requireOutside';
module.exports = ({template, types: t}) => {
const replacement = template(`
require(require.resolve(IMPORT_PATH, {
[(global['jest-symbol-do-not-touch'] || global.Symbol).for('jest-resolve-outside-vm-option')]: true,
}));
`);
return {
name: 'jest-require-outside-vm',
visitor: {
CallExpression(path) {
const {callee, arguments: args} = path.node;
if (
t.isIdentifier(callee) &&
callee.name === REQUIRE_OUTSIDE_FUNCTION_NAME &&
!path.scope.hasBinding(REQUIRE_OUTSIDE_FUNCTION_NAME)
) {
assert.strictEqual(
args.length,
1,
'requireOutside must be called with exactly one argument',
);
const importPath = args[0];
path.replaceWith(replacement({IMPORT_PATH: importPath}));
}
},
},
};
};