Function appendFile

lib/internal/vfs/setup.js:591–593

(path, data, options)

      return vfsOp(path, (vfs, n) => vfs.promises.writeFile(n, data, options).then(() => true));
    },
    appendFile(path, data, options) {
      return vfsOp(path, (vfs, n) => vfs.promises.appendFile(n, data, options).then(() => true));
    },
    mkdir(path, options) {
      return vfsOp(path, (vfs, n) =>
        vfs.promises.mkdir(n, options).then((result) => ({ __proto__: null, result })));