pnpm
Version:
Fast, disk space efficient package manager
28 lines (24 loc) • 722 B
JavaScript
/** @license MIT License (c) copyright 2010-2016 original author or authors */
/** @author Brian Cavalier */
/** @author John Hann */
import { of as streamOf } from '../source/core'
import { continueWith } from './continueWith'
/**
* @param {*} x value to prepend
* @param {Stream} stream
* @returns {Stream} new stream with x prepended
*/
export function cons (x, stream) {
return concat(streamOf(x), stream)
}
/**
* @param {Stream} left
* @param {Stream} right
* @returns {Stream} new stream containing all events in left followed by all
* events in right. This *timeshifts* right to the end of left.
*/
export function concat (left, right) {
return continueWith(function () {
return right
}, left)
}