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NodeJS Streams: Readable.pipe() no envía datos inmediatamente

Por lo que entendí sobre las transmisiones, Stream.Readable.pipe() debería canalizar los datos tan pronto como los reciba.

Estoy tratando de implementar mis propios flujos, pero el resultado no es el esperado.

 const { Writable, Readable } = require("stream"); const writable = new Writable(); writable.data = []; writable._write = (chunk, encoding, next) => { writable.data.push(chunk.toString()); console.log(chunk.toString()); next(); }; const readable = new Readable({ read() {}, }); readable.pipe(writable); readable.push("hi"); writable.write("ho"); writable.write("ho"); console.log(writable.data);

La salida de este código es

 ho ho [ 'ho', 'ho' ] hi

La tubería está escribiendo en la secuencia más tarde. ¿Qué significa esto?

about 4 years ago · Juan Pablo Isaza
1 answers
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necesita escribir en la transmisión y no llamar directamente al método de escritura de writable

 const { Writable, Readable } = require("stream"); const writable = new Writable(); writable.data = []; writable._write = (chunk, encoding, next) => { writable.data.push(chunk.toString()); next(); }; const readable = new Readable({ read() { }, }); const stream = readable.pipe(writable); stream.write("hi"); stream.write("ho"); stream.write("ho"); console.log(writable.data);

//[ 'hola', 'jo', 'jo' ]

about 4 years ago · Juan Pablo Isaza Report
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