Suggestion: node Writable stream wrapper around table.createStream

[CodeMan99]

Opening as issue because I am not sure where the code should land.

Shipping a writable wrapper is easy as defining _write and _final methods.

const {Writable} = require('stream'); // or "readable-stream" if you prefer

function WriteTableStream(options) {
	if (!(this instanceof WriteTableStream)) {
		return new WriteTableStream(options);
	}

	options = Object.assign({objectMode: true}, options);
	Writable.call(this, options);
	this._tableStream = createStream(options);
}

// or require('util').inherits if you prefer. Honestly, I hate that Object.setPrototypeOf is used there
WriteTableStream.super_ = Writable;
WriteTableStream.prototype = Object.create(Writable.prototype, {
	constructor: {
		configurable: true,
		enumerable: false,
		value: WriteTableStream,
		writable: true
	}
});

WriteTableStream.prototype._write = function(chunk, encoding, next) {
	let err = null;

	try {
		this._tableStream.write(chunk);
	} catch (e) {
		err = e;
	}

	next(err);
};

WriteTableStream.prototype._final = function(done) {
	process.stdout.write('\n', done);
};

This allows users to create a pipeline that transforms their data into row arrays. For example maybe read a csv file in a stream.

fs.createReadStream('data.csv')
    // https://github.com/mcollina/split2
    .pipe(split(line => line.split(','), {trailing: false}))
    .pipe(new WriteTableStream(options));