@stryker-mutator/core/dist/src/initializer/custom-initializers/angular-initializer.js

The extendable JavaScript mutation testing framework

import os from 'os';
import fs from 'fs/promises';
import { commonTokens } from '@stryker-mutator/api/plugin';
import semver from 'semver';
import { fileUtils } from '../../utils/file-utils.js';
import { coreTokens } from '../../di/index.js';
const guideUrl = 'https://stryker-mutator.io/docs/stryker-js/guides/angular';
const karmaConfigFile = 'karma.conf.js';
export class AngularInitializer {
    log;
    execa;
    resolve;
    static inject = [
        commonTokens.logger,
        coreTokens.execa,
        coreTokens.resolveFromCwd,
    ];
    constructor(log, execa, resolve) {
        this.log = log;
        this.execa = execa;
        this.resolve = resolve;
    }
    name = 'angular-cli';
    // Please keep config in sync with handbook
    dependencies = ['@stryker-mutator/karma-runner'];
    config = {
        mutate: [
            'src/**/*.ts',
            '!src/**/*.spec.ts',
            '!src/test.ts',
            '!src/environments/*.ts',
        ],
        testRunner: 'karma',
        karma: {
            configFile: karmaConfigFile,
            projectType: 'angular-cli',
            config: {
                browsers: ['ChromeHeadless'],
            },
        },
        reporters: ['progress', 'clear-text', 'html'],
        ignorers: ['angular'],
        concurrency: Math.floor(os.cpus().length / 2),
        concurrency_comment: 'Recommended to use about half of your available cores when running stryker with angular',
        coverageAnalysis: 'perTest',
    };
    async createConfig() {
        const [karmaConfigExists, ngVersionOutput] = await Promise.all([
            fileUtils.exists(karmaConfigFile),
            this.getCurrentAngularVersion(),
        ]);
        if (!karmaConfigExists &&
            ngVersionOutput &&
            semver.gte(ngVersionOutput, '15.1.0')) {
            const command = 'npx ng generate config karma';
            this.log.info(`No "karma.conf.js" file found, running command: "${command}"`);
            const { stdout } = await this.execa(command);
            this.log.info(`\n${stdout}`);
        }
        return { config: this.config, guideUrl, dependencies: this.dependencies };
    }
    async getCurrentAngularVersion() {
        try {
            const packageLocation = this.resolve('@angular/cli/package.json');
            return JSON.parse(await fs.readFile(packageLocation, 'utf8')).version;
        }
        catch (err) {
            const error = err;
            this.log.warn(`Could not discover your local angular-cli version. Continuing without generating karma configuration. ${error.stack}`);
            return undefined;
        }
    }
}
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