nstdlib-nightly/lib/internal/fs/sync_write_stream.mjs

Node.js standard library converted to runtime-agnostic ES modules.

// Source: https://github.com/nodejs/node/blob/65eff1eb/lib/internal/fs/sync_write_stream.js

import { kEmptyObject } from "nstdlib/lib/internal/util";
import { Writable } from "nstdlib/lib/stream";
import { closeSync, writeSync } from "nstdlib/lib/fs";

function SyncWriteStream(fd, options) {
  ReflectApply(Writable, this, [{ autoDestroy: true }]);

  options = options || kEmptyObject;

  this.fd = fd;
  this.readable = false;
  this.autoClose = options.autoClose === undefined ? true : options.autoClose;
}

Object.setPrototypeOf(SyncWriteStream.prototype, Writable.prototype);
Object.setPrototypeOf(SyncWriteStream, Writable);

SyncWriteStream.prototype._write = function (chunk, encoding, cb) {
  try {
    writeSync(this.fd, chunk, 0, chunk.length);
  } catch (e) {
    cb(e);
    return;
  }
  cb();
};

SyncWriteStream.prototype._destroy = function (err, cb) {
  if (this.fd === null)
    // already destroy()ed
    return cb(err);

  if (this.autoClose) closeSync(this.fd);

  this.fd = null;
  cb(err);
};

SyncWriteStream.prototype.destroySoon = SyncWriteStream.prototype.destroy;

export default SyncWriteStream;