denoland-deno/ext/node/polyfills/internal/fs/handle.ts

// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
import { EventEmitter } from "ext:deno_node/events.ts";
import { Buffer } from "ext:deno_node/buffer.ts";
import { promises } from "ext:deno_node/fs.ts";
import {
  BinaryOptionsArgument,
  FileOptionsArgument,
  TextOptionsArgument,
} from "ext:deno_node/_fs/_fs_common.ts";

export class FileHandle extends EventEmitter {
  #rid: number;
  constructor(rid: number) {
    super();
    this.rid = rid;
  }

  get fd() {
    return this.rid;
  }

  readFile(
    opt?: TextOptionsArgument | BinaryOptionsArgument | FileOptionsArgument,
  ): Promise<string | Buffer> {
    return promises.readFile(this, opt);
  }

  close(): Promise<void> {
    // Note that Deno.close is not async
    return Promise.resolve(Deno.close(this.fd));
  }
}

export default {
  FileHandle,
};