`for-await-of` and synchronous iterables
This blog post describes how for-await-of handles synchronous iterables. for-await-of is a core construct of asynchronous iteration. You can read up on it in the blog post “ES proposal: asynchronous iteration”. Note: you can run the examples in Node.js 9.2+ via: node --harmony-async-iteration Refresher: asynchronous iterables # Asynchronous iterables return asynchronous iterators, whose method ne
Reading streams via async iteration in Node.js
Update 2018-04-24: Using the library stringio to read lines from stdin. Node.js 10 was released on April 24, 2018. This version provides experimental support for asynchronously iterating over readable streams. This blog post explains how that works. Reading streams asynchronously # In this section, we examine two ways of reading data from a stream asynchronously: via callbacks and via asynchronou
How to use ES8 async/await with streams?
In https://stackoverflow.com/a/18658613/779159 is an example of how to calculate the md5 of a file using the built-in crypto library and streams. var fs = require('fs'); var crypto = require('crypto'); // the file you want to get the hash var fd = fs.createReadStream('/some/file/name.txt'); var hash = crypto.createHash('sha1'); hash.setEncoding('hex'); fd.on('end', function() { hash.end(); console
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