nstdlib-nightly/lib/stream.mjs

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

// Source: https://github.com/nodejs/node/blob/65eff1eb/lib/stream.js

import * as __hoisted_internal_streams_readable__ from "nstdlib/lib/internal/streams/readable";
import * as __hoisted_internal_streams_writable__ from "nstdlib/lib/internal/streams/writable";
import * as __hoisted_internal_streams_duplex__ from "nstdlib/lib/internal/streams/duplex";
import * as __hoisted_internal_streams_transform__ from "nstdlib/lib/internal/streams/transform";
import * as __hoisted_internal_streams_passthrough__ from "nstdlib/lib/internal/streams/passthrough";
import * as __hoisted_internal_streams_duplexpair__ from "nstdlib/lib/internal/streams/duplexpair";
import { promisify as __promisify__ } from "nstdlib/lib/internal/util";
import {
  streamReturningOperators,
  promiseReturningOperators,
} from "nstdlib/lib/internal/streams/operators";
import { codes as __codes__ } from "nstdlib/lib/internal/errors";
import * as compose from "nstdlib/lib/internal/streams/compose";
import {
  setDefaultHighWaterMark,
  getDefaultHighWaterMark,
} from "nstdlib/lib/internal/streams/state";
import { pipeline } from "nstdlib/lib/internal/streams/pipeline";
import { destroyer } from "nstdlib/lib/internal/streams/destroy";
import * as eos from "nstdlib/lib/internal/streams/end-of-stream";
import * as internalBuffer from "nstdlib/lib/internal/buffer";
import * as promises from "nstdlib/lib/stream/promises";
import * as utils from "nstdlib/lib/internal/streams/utils";
import {
  isArrayBufferView,
  isUint8Array,
} from "nstdlib/lib/internal/util/types";
import { addAbortSignal } from "nstdlib/lib/internal/streams/add-abort-signal";
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

const { custom: customPromisify } = __promisify__;

const { ERR_ILLEGAL_CONSTRUCTOR } = __codes__;

const Stream = require("internal/streams/legacy").Stream;
export { Stream as default };

Stream.isDestroyed = utils.isDestroyed;
Stream.isDisturbed = utils.isDisturbed;
Stream.isErrored = utils.isErrored;
Stream.isReadable = utils.isReadable;
Stream.isWritable = utils.isWritable;

Stream.Readable = __hoisted_internal_streams_readable__;
for (const key of Object.keys(streamReturningOperators)) {
  const op = streamReturningOperators[key];
  function fn(...args) {
    if (new.target) {
      throw new ERR_ILLEGAL_CONSTRUCTOR();
    }
    return Stream.Readable.from(ReflectApply(op, this, args));
  }
  Object.defineProperty(fn, "name", { __proto__: null, value: op.name });
  Object.defineProperty(fn, "length", { __proto__: null, value: op.length });
  Object.defineProperty(Stream.Readable.prototype, key, {
    __proto__: null,
    value: fn,
    enumerable: false,
    configurable: true,
    writable: true,
  });
}
for (const key of Object.keys(promiseReturningOperators)) {
  const op = promiseReturningOperators[key];
  function fn(...args) {
    if (new.target) {
      throw new ERR_ILLEGAL_CONSTRUCTOR();
    }
    return ReflectApply(op, this, args);
  }
  Object.defineProperty(fn, "name", { __proto__: null, value: op.name });
  Object.defineProperty(fn, "length", { __proto__: null, value: op.length });
  Object.defineProperty(Stream.Readable.prototype, key, {
    __proto__: null,
    value: fn,
    enumerable: false,
    configurable: true,
    writable: true,
  });
}
Stream.Writable = __hoisted_internal_streams_writable__;
Stream.Duplex = __hoisted_internal_streams_duplex__;
Stream.Transform = __hoisted_internal_streams_transform__;
Stream.PassThrough = __hoisted_internal_streams_passthrough__;
Stream.duplexPair = __hoisted_internal_streams_duplexpair__;
Stream.pipeline = pipeline;
Stream.addAbortSignal = addAbortSignal;
Stream.finished = eos;
Stream.destroy = destroyer;
Stream.compose = compose;
Stream.setDefaultHighWaterMark = setDefaultHighWaterMark;
Stream.getDefaultHighWaterMark = getDefaultHighWaterMark;

Object.defineProperty(Stream, "promises", {
  __proto__: null,
  configurable: true,
  enumerable: true,
  get() {
    return promises;
  },
});

Object.defineProperty(pipeline, customPromisify, {
  __proto__: null,
  enumerable: true,
  get() {
    return promises.pipeline;
  },
});

Object.defineProperty(eos, customPromisify, {
  __proto__: null,
  enumerable: true,
  get() {
    return promises.finished;
  },
});

// Backwards-compat with node 0.4.x
Stream.Stream = Stream;

Stream._isArrayBufferView = isArrayBufferView;
Stream._isUint8Array = isUint8Array;
Stream._uint8ArrayToBuffer = function _uint8ArrayToBuffer(chunk) {
  return new internalBuffer.FastBuffer(
    chunk.buffer,
    chunk.byteOffset,
    chunk.byteLength,
  );
};