@stryker-mutator/core/src/reporters/reporter-util.ts

The extendable JavaScript mutation testing framework

import path from 'path';
import { createReadStream, createWriteStream, promises as fs } from 'fs';

export const reporterUtil = {
  copyFile(fromFilename: string, toFilename: string): Promise<void> {
    return new Promise<void>((resolve, reject) => {
      const readStream = createReadStream(fromFilename);
      const writeStream = createWriteStream(toFilename);
      readStream.on('error', reject);
      writeStream.on('error', reject);
      readStream.pipe(writeStream);
      readStream.on('end', resolve);
    });
  },

  async writeFile(fileName: string, content: string): Promise<void> {
    await fs.mkdir(path.dirname(fileName), { recursive: true });
    await fs.writeFile(fileName, content, 'utf8');
  },
};