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stream: use `kEmptyObject` · nodejs/node@b200a5f · GitHub

/ node Public

Commit b200a5f

Browse files
LiviaMedeiros
authored and
danielleadams
committed
stream: use kEmptyObject
PR-URL: #43159 Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
1 parent 5e98cac commit b200a5f

4 files changed

Lines changed: 19 additions & 13 deletions

File tree

‎lib/internal/streams/end-of-stream.js‎

Lines changed: 6 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -11,7 +11,10 @@ const {
1111
ERR_INVALID_ARG_TYPE,
1212
ERR_STREAM_PREMATURE_CLOSE
1313
} = codes;
14-
const { once } = require('internal/util');
14+
const {
15+
kEmptyObject,
16+
once,
17+
} = require('internal/util');
1518
const {
1619
validateAbortSignal,
1720
validateFunction,
@@ -43,9 +46,9 @@ const nop = () => {};
4346
function eos(stream, options, callback) {
4447
if (arguments.length === 2) {
4548
callback = options;
46-
options = {};
49+
options = kEmptyObject;
4750
} else if (options == null) {
48-
options = {};
51+
options = kEmptyObject;
4952
} else {
5053
validateObject(options, 'options');
5154
}

‎lib/internal/webstreams/adapters.js‎

Lines changed: 5 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -55,6 +55,7 @@ const {
5555

5656
const {
5757
createDeferredPromise,
58+
kEmptyObject,
5859
} = require('internal/util');
5960

6061
const {
@@ -198,7 +199,7 @@ function newWritableStreamFromStreamWritable(streamWritable) {
198199
* }} [options]
199200
* @returns {Writable}
200201
*/
201-
function newStreamWritableFromWritableStream(writableStream, options = {}) {
202+
function newStreamWritableFromWritableStream(writableStream, options = kEmptyObject) {
202203
if (!isWritableStream(writableStream)) {
203204
throw new ERR_INVALID_ARG_TYPE(
204205
'writableStream',
@@ -441,7 +442,7 @@ function newReadableStreamFromStreamReadable(streamReadable) {
441442
* }} [options]
442443
* @returns {Readable}
443444
*/
444-
function newStreamReadableFromReadableStream(readableStream, options = {}) {
445+
function newStreamReadableFromReadableStream(readableStream, options = kEmptyObject) {
445446
if (!isReadableStream(readableStream)) {
446447
throw new ERR_INVALID_ARG_TYPE(
447448
'readableStream',
@@ -585,7 +586,7 @@ function newReadableWritablePairFromDuplex(duplex) {
585586
* }} [options]
586587
* @returns {Duplex}
587588
*/
588-
function newStreamDuplexFromReadableWritablePair(pair = {}, options = {}) {
589+
function newStreamDuplexFromReadableWritablePair(pair = kEmptyObject, options = kEmptyObject) {
589590
validateObject(pair, 'pair');
590591
const {
591592
readable: readableStream,
@@ -876,7 +877,7 @@ function newWritableStreamFromStreamBase(streamBase, strategy) {
876877
* @param {QueuingStrategy} strategy
877878
* @returns {ReadableStream}
878879
*/
879-
function newReadableStreamFromStreamBase(streamBase, strategy, options = {}) {
880+
function newReadableStreamFromStreamBase(streamBase, strategy, options = kEmptyObject) {
880881
validateObject(streamBase, 'streamBase');
881882
validateObject(options, 'options');
882883

‎lib/internal/webstreams/encoding.js‎

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -24,6 +24,7 @@ const {
2424

2525
const {
2626
customInspectSymbol: kInspect,
27+
kEmptyObject,
2728
kEnumerableProperty,
2829
} = require('internal/util');
2930

@@ -114,7 +115,7 @@ class TextDecoderStream {
114115
* ignoreBOM? : boolean,
115116
* }} [options]
116117
*/
117-
constructor(encoding = 'utf-8', options = {}) {
118+
constructor(encoding = 'utf-8', options = kEmptyObject) {
118119
this[kType] = 'TextDecoderStream';
119120
this[kHandle] = new TextDecoder(encoding, options);
120121
this[kTransform] = new TransformStream({

‎lib/internal/webstreams/readablestream.js‎

Lines changed: 6 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -50,6 +50,7 @@ const {
5050
const {
5151
createDeferredPromise,
5252
customInspectSymbol: kInspect,
53+
kEmptyObject,
5354
kEnumerableProperty,
5455
} = require('internal/util');
5556

@@ -206,7 +207,7 @@ class ReadableStream {
206207
* @param {UnderlyingSource} [source]
207208
* @param {QueuingStrategy} [strategy]
208209
*/
209-
constructor(source = {}, strategy = {}) {
210+
constructor(source = {}, strategy = kEmptyObject) {
210211
if (source === null)
211212
throw new ERR_INVALID_ARG_VALUE('source', 'Object', source);
212213
this[kState] = {
@@ -296,7 +297,7 @@ class ReadableStream {
296297
* }} [options]
297298
* @returns {ReadableStreamReader}
298299
*/
299-
getReader(options = {}) {
300+
getReader(options = kEmptyObject) {
300301
if (!isReadableStream(this))
301302
throw new ERR_INVALID_THIS('ReadableStream');
302303
validateObject(options, 'options', { nullable: true, allowFunction: true });
@@ -315,7 +316,7 @@ class ReadableStream {
315316
* @param {StreamPipeOptions} [options]
316317
* @returns {ReadableStream}
317318
*/
318-
pipeThrough(transform, options = {}) {
319+
pipeThrough(transform, options = kEmptyObject) {
319320
if (!isReadableStream(this))
320321
throw new ERR_INVALID_THIS('ReadableStream');
321322
const readable = transform?.readable;
@@ -365,7 +366,7 @@ class ReadableStream {
365366
* @param {StreamPipeOptions} [options]
366367
* @returns {Promise<void>}
367368
*/
368-
pipeTo(destination, options = {}) {
369+
pipeTo(destination, options = kEmptyObject) {
369370
try {
370371
if (!isReadableStream(this))
371372
throw new ERR_INVALID_THIS('ReadableStream');
@@ -416,7 +417,7 @@ class ReadableStream {
416417
* }} [options]
417418
* @returns {AsyncIterable}
418419
*/
419-
values(options = {}) {
420+
values(options = kEmptyObject) {
420421
if (!isReadableStream(this))
421422
throw new ERR_INVALID_THIS('ReadableStream');
422423
validateObject(options, 'options');

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