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367
backend/apis/nodejs/node_modules/babel-plugin-jest-hoist/build/index.js
generated
vendored
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367
backend/apis/nodejs/node_modules/babel-plugin-jest-hoist/build/index.js
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vendored
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@ -0,0 +1,367 @@
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'use strict';
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Object.defineProperty(exports, '__esModule', {
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value: true
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});
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exports.default = jestHoist;
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function _template() {
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const data = require('@babel/template');
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_template = function () {
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return data;
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};
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return data;
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}
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function _types() {
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const data = require('@babel/types');
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_types = function () {
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return data;
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};
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return data;
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}
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/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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*/
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const JEST_GLOBAL_NAME = 'jest';
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const JEST_GLOBALS_MODULE_NAME = '@jest/globals';
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const JEST_GLOBALS_MODULE_JEST_EXPORT_NAME = 'jest';
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const hoistedVariables = new WeakSet();
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const hoistedJestGetters = new WeakSet();
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const hoistedJestExpressions = new WeakSet();
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// We allow `jest`, `expect`, `require`, all default Node.js globals and all
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// ES2015 built-ins to be used inside of a `jest.mock` factory.
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// We also allow variables prefixed with `mock` as an escape-hatch.
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const ALLOWED_IDENTIFIERS = new Set(
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[
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'Array',
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'ArrayBuffer',
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'Boolean',
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'BigInt',
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'DataView',
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'Date',
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'Error',
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'EvalError',
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'Float32Array',
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'Float64Array',
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'Function',
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'Generator',
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'GeneratorFunction',
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'Infinity',
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'Int16Array',
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'Int32Array',
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'Int8Array',
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'InternalError',
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'Intl',
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'JSON',
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'Map',
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'Math',
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'NaN',
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'Number',
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'Object',
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'Promise',
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'Proxy',
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'RangeError',
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'ReferenceError',
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'Reflect',
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'RegExp',
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'Set',
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'String',
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'Symbol',
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'SyntaxError',
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'TypeError',
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'URIError',
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'Uint16Array',
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'Uint32Array',
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'Uint8Array',
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'Uint8ClampedArray',
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'WeakMap',
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'WeakSet',
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'arguments',
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'console',
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'expect',
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'isNaN',
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'jest',
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'parseFloat',
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'parseInt',
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'exports',
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'require',
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'module',
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'__filename',
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'__dirname',
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'undefined',
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...Object.getOwnPropertyNames(globalThis)
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].sort()
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);
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const IDVisitor = {
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ReferencedIdentifier(path, {ids}) {
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ids.add(path);
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},
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blacklist: [
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'TypeAnnotation',
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'TSTypeAnnotation',
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'TSTypeQuery',
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'TSTypeReference'
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]
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};
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const FUNCTIONS = Object.create(null);
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FUNCTIONS.mock = args => {
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if (args.length === 1) {
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return args[0].isStringLiteral() || args[0].isLiteral();
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} else if (args.length === 2 || args.length === 3) {
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const moduleFactory = args[1];
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if (!moduleFactory.isFunction()) {
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throw moduleFactory.buildCodeFrameError(
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'The second argument of `jest.mock` must be an inline function.\n',
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TypeError
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);
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}
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const ids = new Set();
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const parentScope = moduleFactory.parentPath.scope;
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// @ts-expect-error: ReferencedIdentifier and blacklist are not known on visitors
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moduleFactory.traverse(IDVisitor, {
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ids
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});
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for (const id of ids) {
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const {name} = id.node;
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let found = false;
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let scope = id.scope;
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while (scope !== parentScope) {
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if (scope.bindings[name] != null) {
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found = true;
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break;
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}
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scope = scope.parent;
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}
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if (!found) {
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let isAllowedIdentifier =
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(scope.hasGlobal(name) && ALLOWED_IDENTIFIERS.has(name)) ||
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/^mock/i.test(name) ||
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// Allow istanbul's coverage variable to pass.
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/^(?:__)?cov/.test(name);
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if (!isAllowedIdentifier) {
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const binding = scope.bindings[name];
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if (binding?.path.isVariableDeclarator()) {
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const {node} = binding.path;
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const initNode = node.init;
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if (initNode && binding.constant && scope.isPure(initNode, true)) {
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hoistedVariables.add(node);
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isAllowedIdentifier = true;
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}
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} else if (binding?.path.isImportSpecifier()) {
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const importDecl = binding.path.parentPath;
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const imported = binding.path.node.imported;
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if (
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importDecl.node.source.value === JEST_GLOBALS_MODULE_NAME &&
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((0, _types().isIdentifier)(imported)
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? imported.name
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: imported.value) === JEST_GLOBALS_MODULE_JEST_EXPORT_NAME
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) {
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isAllowedIdentifier = true;
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// Imports are already hoisted, so we don't need to add it
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// to hoistedVariables.
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}
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}
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}
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if (!isAllowedIdentifier) {
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throw id.buildCodeFrameError(
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'The module factory of `jest.mock()` is not allowed to ' +
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'reference any out-of-scope variables.\n' +
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`Invalid variable access: ${name}\n` +
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`Allowed objects: ${Array.from(ALLOWED_IDENTIFIERS).join(
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', '
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)}.\n` +
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'Note: This is a precaution to guard against uninitialized mock ' +
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'variables. If it is ensured that the mock is required lazily, ' +
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'variable names prefixed with `mock` (case insensitive) are permitted.\n',
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ReferenceError
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);
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}
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}
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}
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return true;
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}
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return false;
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};
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FUNCTIONS.unmock = args => args.length === 1 && args[0].isStringLiteral();
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FUNCTIONS.deepUnmock = args => args.length === 1 && args[0].isStringLiteral();
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FUNCTIONS.disableAutomock = FUNCTIONS.enableAutomock = args =>
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args.length === 0;
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const createJestObjectGetter = (0, _template().statement)`
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function GETTER_NAME() {
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const { JEST_GLOBALS_MODULE_JEST_EXPORT_NAME } = require("JEST_GLOBALS_MODULE_NAME");
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GETTER_NAME = () => JEST_GLOBALS_MODULE_JEST_EXPORT_NAME;
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return JEST_GLOBALS_MODULE_JEST_EXPORT_NAME;
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}
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`;
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const isJestObject = expression => {
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// global
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if (
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expression.isIdentifier() &&
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expression.node.name === JEST_GLOBAL_NAME &&
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!expression.scope.hasBinding(JEST_GLOBAL_NAME)
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) {
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return true;
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}
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// import { jest } from '@jest/globals'
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if (
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expression.referencesImport(
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JEST_GLOBALS_MODULE_NAME,
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JEST_GLOBALS_MODULE_JEST_EXPORT_NAME
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)
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) {
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return true;
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}
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// import * as JestGlobals from '@jest/globals'
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if (
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expression.isMemberExpression() &&
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!expression.node.computed &&
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expression.get('object').referencesImport(JEST_GLOBALS_MODULE_NAME, '*') &&
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expression.node.property.type === 'Identifier' &&
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expression.node.property.name === JEST_GLOBALS_MODULE_JEST_EXPORT_NAME
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) {
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return true;
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}
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return false;
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};
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const extractJestObjExprIfHoistable = expr => {
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if (!expr.isCallExpression()) {
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return null;
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}
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const callee = expr.get('callee');
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const args = expr.get('arguments');
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if (!callee.isMemberExpression() || callee.node.computed) {
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return null;
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}
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const object = callee.get('object');
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const property = callee.get('property');
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const propertyName = property.node.name;
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const jestObjExpr = isJestObject(object)
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? object
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: // The Jest object could be returned from another call since the functions are all chainable.
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extractJestObjExprIfHoistable(object)?.path;
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if (!jestObjExpr) {
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return null;
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}
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// Important: Call the function check last
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// It might throw an error to display to the user,
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// which should only happen if we're already sure it's a call on the Jest object.
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const functionIsHoistable = FUNCTIONS[propertyName]?.(args) ?? false;
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let functionHasHoistableScope = functionIsHoistable;
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for (
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let path = expr;
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path && !functionHasHoistableScope;
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path = path.parentPath
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) {
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functionHasHoistableScope = hoistedJestExpressions.has(
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// @ts-expect-error: it's ok if path.node is not an Expression, .has will
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// just return false.
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path.node
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);
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}
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if (functionHasHoistableScope) {
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hoistedJestExpressions.add(expr.node);
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return {
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hoist: functionIsHoistable,
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path: jestObjExpr
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};
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}
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return null;
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};
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/* eslint-disable sort-keys */
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function jestHoist() {
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return {
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pre({path: program}) {
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this.declareJestObjGetterIdentifier = () => {
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if (this.jestObjGetterIdentifier) {
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return this.jestObjGetterIdentifier;
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}
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this.jestObjGetterIdentifier =
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program.scope.generateUidIdentifier('getJestObj');
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program.unshiftContainer('body', [
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createJestObjectGetter({
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GETTER_NAME: this.jestObjGetterIdentifier.name,
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JEST_GLOBALS_MODULE_JEST_EXPORT_NAME,
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JEST_GLOBALS_MODULE_NAME
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})
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]);
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return this.jestObjGetterIdentifier;
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};
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},
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visitor: {
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ExpressionStatement(exprStmt) {
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const jestObjInfo = extractJestObjExprIfHoistable(
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exprStmt.get('expression')
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);
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if (jestObjInfo) {
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const jestCallExpr = (0, _types().callExpression)(
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this.declareJestObjGetterIdentifier(),
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[]
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);
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jestObjInfo.path.replaceWith(jestCallExpr);
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if (jestObjInfo.hoist) {
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hoistedJestGetters.add(jestCallExpr);
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}
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}
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}
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},
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// in `post` to make sure we come after an import transform and can unshift above the `require`s
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post({path: program}) {
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visitBlock(program);
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program.traverse({
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BlockStatement: visitBlock
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});
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function visitBlock(block) {
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// use a temporary empty statement instead of the real first statement, which may itself be hoisted
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const [varsHoistPoint, callsHoistPoint] = block.unshiftContainer(
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'body',
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[(0, _types().emptyStatement)(), (0, _types().emptyStatement)()]
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);
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block.traverse({
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CallExpression: visitCallExpr,
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VariableDeclarator: visitVariableDeclarator,
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// do not traverse into nested blocks, or we'll hoist calls in there out to this block
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blacklist: ['BlockStatement']
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});
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callsHoistPoint.remove();
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varsHoistPoint.remove();
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function visitCallExpr(callExpr) {
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if (hoistedJestGetters.has(callExpr.node)) {
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const mockStmt = callExpr.getStatementParent();
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if (mockStmt) {
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const mockStmtParent = mockStmt.parentPath;
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if (mockStmtParent.isBlock()) {
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const mockStmtNode = mockStmt.node;
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mockStmt.remove();
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callsHoistPoint.insertBefore(mockStmtNode);
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}
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}
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}
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}
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function visitVariableDeclarator(varDecl) {
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if (hoistedVariables.has(varDecl.node)) {
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// should be assert function, but it's not. So let's cast below
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varDecl.parentPath.assertVariableDeclaration();
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const {kind, declarations} = varDecl.parent;
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if (declarations.length === 1) {
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varDecl.parentPath.remove();
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} else {
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varDecl.remove();
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}
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varsHoistPoint.insertBefore(
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(0, _types().variableDeclaration)(kind, [varDecl.node])
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);
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}
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}
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}
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}
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};
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}
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/* eslint-enable */
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