@naturalcycles/nodejs-lib/dist/stream/transform/transformNoOp.js

Standard library for Node.js

import { Transform } from 'node:stream';
/**
 * Transform that does nothing (pass the data through).
 * Can be used e.g to convert "not-valid" stream (e.g one that `transformMap` is producing)
 * into a "valid" stream (that implements async-iteration interface).
 */
export function transformNoOp() {
    return new Transform({
        objectMode: true,
        highWaterMark: 1,
        transform(chunk, _, cb) {
            cb(null, chunk);
        },
    });
}