Method writeFile

packages/insomnia/src/sync/git/mem-client.ts:112–171

(
    filePath: string,
    data: Buffer | string,
    options: BufferEncoding | { encoding?: BufferEncoding; flag?: string } = {},
  )

  }

  async writeFile(
    filePath: string,
    data: Buffer | string,
    options: BufferEncoding | { encoding?: BufferEncoding; flag?: string } = {},
  ) {
    filePath = path.normalize(filePath);

    if (typeof options === 'string') {
      options = {
        encoding: options,
      };
    }

    const flag = options && options.flag ? options.flag : 'w';
    const encoding = options && options.encoding ? options.encoding : 'utf8';

    // Make sure file doesn't exist for "x" flags
    if (flag[1] === 'x') {
      await this._assertDoesNotExist(filePath);
    }

    const dirEntry: FSDir = this._assertDir(path.dirname(filePath));

    let file: FSEntry | null = this._find(filePath);

    if (file) {
      file = this._assertFileEntry(file);
    } else {
      const name = path.basename(filePath);
      file = {
        name,
        type: 'file',
        ino: this.__ino++,
        mtimeMs: Date.now(),
        contents: '',
        path: filePath,
      };
      dirEntry.children.push(file);
    }

    let newContents = Buffer.alloc(0);

    if (flag[0] === 'w') {
      newContents = typeof data === 'string' ? Buffer.from(data, encoding) : data;
    } else if (flag[0] === 'a') {
      const contentsBuff: Buffer = Buffer.from(file.contents, 'base64');
      newContents = Buffer.concat([contentsBuff, typeof data === 'string' ? Buffer.from(data, encoding) : data]);
    } else {
      throw new SystemError({
        code: 'EBADF',
        errno: -9,
        message: 'EBADF: bad file descriptor, write',
        path: filePath,
        syscall: 'write',
      });
    }

    file.contents = newContents.toString('base64');