get-stream
Advanced tools
Package description
The get-stream npm package is a utility that allows you to get a stream as a string, buffer, or array. It is useful for converting streams into a more usable form in Node.js applications.
Get stream as a string
This feature allows you to convert a readable stream into a string. It is useful when you want to process the contents of a file or any readable stream as a string.
const getStream = require('get-stream');
const fs = require('fs');
(async () => {
const stream = fs.createReadStream('file.txt');
const data = await getStream(stream);
console.log(data);
})();Get stream as a buffer
This feature allows you to convert a readable stream into a buffer. It is useful when you need to handle binary data from streams.
const getStream = require('get-stream');
const fs = require('fs');
(async () => {
const stream = fs.createReadStream('file.txt');
const data = await getStream.buffer(stream);
console.log(data);
})();Get stream as an array
This feature allows you to convert a readable stream into an array of values. It is useful when you want to process data from a stream in chunks or lines.
const getStream = require('get-stream');
const fs = require('fs');
(async () => {
const stream = fs.createReadStream('file.txt');
const data = await getStream.array(stream);
console.log(data);
})();concat-stream is a writable stream that concatenates data and calls a callback with the result. It is similar to get-stream but uses a callback pattern instead of promises.
Buffer List (bl) is a storage object for collections of Node Buffers, which can be easily read and written. It is similar to get-stream's buffer functionality but offers more features for manipulating the buffer list.
stream-to-promise converts a Node.js stream into a promise, which is resolved when the 'finish' event is emitted. It is similar to get-stream but focuses on the 'finish' event rather than collecting the stream's data.
Readme
Get a stream as a string or buffer
npm install get-stream
import fs from 'node:fs';
import getStream from 'get-stream';
const stream = fs.createReadStream('unicorn.txt');
console.log(await getStream(stream));
/*
,,))))))));,
__)))))))))))))),
\|/ -\(((((''''((((((((.
-*-==//////(('' . `)))))),
/|\ ))| o ;-. '((((( ,(,
( `| / ) ;))))' ,_))^;(~
| | | ,))((((_ _____------~~~-. %,;(;(>';'~
o_); ; )))(((` ~---~ `:: \ %%~~)(v;(`('~
; ''''```` `: `:::|\,__,%% );`'; ~
| _ ) / `:|`----' `-'
______/\/~ | / /
/~;;.____/;;' / ___--,-( `;;;/
/ // _;______;'------~~~~~ /;;/\ /
// | | / ; \;;,\
(<_ | ; /',/-----' _>
\_| ||_ //~;~~~~~~~~~
`\_| (,~~
\~\
~~
*/
The methods returns a promise that resolves when the end event fires on the stream, indicating that there is no more data to be read. The stream is switched to flowing mode.
Get the given stream as a string.
Type: object
Type: string
Default: 'utf8'
The encoding of the incoming stream.
Type: number
Default: Infinity
Maximum length of the returned string. If it exceeds this value before the stream ends, the promise will be rejected with a MaxBufferError error.
Get the given stream as a buffer.
It honors the maxBuffer option as above, but it refers to byte length rather than string length.
import {getStreamAsBuffer} from 'get-stream';
const stream = fs.createReadStream('unicorn.png');
console.log(await getStreamAsBuffer(stream));
If the input stream emits an error event, the promise will be rejected with the error. The buffered data will be attached to the bufferedData property of the error.
import getStream from 'get-stream';
try {
await getStream(streamThatErrorsAtTheEnd('unicorn'));
} catch (error) {
console.log(error.bufferedData);
//=> 'unicorn'
}
You may not need this package if all you need is a string:
import fs from 'node:fs';
const stream = fs.createReadStream('unicorn.txt', {encoding: 'utf8'});
const array = await stream.toArray();
console.log(array.join(''));
concat-stream?This module accepts a stream instead of being one and returns a promise instead of using a callback. The API is simpler and it only supports returning a string or buffer. It doesn't have a fragile type inference. You explicitly choose what you want. And it doesn't depend on the huge readable-stream package.
FAQs
Get a stream as a string, Buffer, ArrayBuffer or array
The npm package get-stream receives a total of 77,240,099 weekly downloads. As such, get-stream popularity was classified as popular.
We found that get-stream demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 2 open source maintainers collaborating on the project.
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