@nx/angular/src/migrations/update-22-3-0/update-jest-preset-angular-setup.js

The Nx Plugin for Angular contains executors, generators, and utilities for managing Angular applications and libraries within an Nx workspace. It provides: - Integration with libraries such as Storybook, Jest, ESLint, Tailwind CSS, Playwright and Cypre

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.default = default_1;
const devkit_1 = require("@nx/devkit");
const projects_1 = require("../utils/projects");
async function default_1(tree) {
    const projects = await (0, projects_1.getProjectsFilteredByDependencies)([
        'npm:jest-preset-angular',
    ]);
    if (!projects.length) {
        return;
    }
    // The old 'jest-preset-angular/setup-jest' import only supported zone-based testing.
    // Zoneless support was added in jest-preset-angular v14.3.0 with the new
    // setupZonelessTestEnv function. Therefore, all projects using the old import
    // were zone-based and should be migrated to setupZoneTestEnv.
    // Regex patterns to match removed imports
    // Matches: import 'jest-preset-angular/setup-jest'; (with optional .js/.mjs extension)
    // Captures .mjs extension in group 3 to preserve it in the replacement
    const setupJestImportRegex = /^(\s*)import\s+(['"`])jest-preset-angular\/setup-jest(?:\.js)?(\.mjs)?\2;?\s*$/gm;
    // Matches: require('jest-preset-angular/setup-jest'); (with optional .js extension)
    // Note: .mjs is not supported with require() so we don't capture it
    const setupJestRequireRegex = /^(\s*)require\s*\(\s*(['"`])jest-preset-angular\/setup-jest(?:\.js)?\2\s*\)\s*;?\s*$/gm;
    for (const project of projects) {
        (0, devkit_1.visitNotIgnoredFiles)(tree, project.data.root, (file) => {
            if (!file.endsWith('.ts')) {
                return;
            }
            let content = tree.read(file, 'utf-8');
            if (!content.includes('jest-preset-angular/setup-jest')) {
                return;
            }
            let wasUpdated = false;
            // Replace import statements, preserving .mjs extension if present
            setupJestImportRegex.lastIndex = 0;
            if (setupJestImportRegex.test(content)) {
                setupJestImportRegex.lastIndex = 0;
                content = content.replace(setupJestImportRegex, (_match, _leadingWhitespace, _quote, mjsExt) => {
                    const modulePath = mjsExt
                        ? 'jest-preset-angular/setup-env/zone/index.mjs'
                        : 'jest-preset-angular/setup-env/zone';
                    return `import { setupZoneTestEnv } from '${modulePath}';

setupZoneTestEnv();`;
                });
                wasUpdated = true;
            }
            // Replace require statements, keeping require syntax
            setupJestRequireRegex.lastIndex = 0;
            if (setupJestRequireRegex.test(content)) {
                setupJestRequireRegex.lastIndex = 0;
                content = content.replace(setupJestRequireRegex, `const { setupZoneTestEnv } = require('jest-preset-angular/setup-env/zone');

setupZoneTestEnv();`);
                wasUpdated = true;
            }
            if (wasUpdated) {
                tree.write(file, content);
            }
        });
    }
    await (0, devkit_1.formatFiles)(tree);
}