@dillonkearns/elm-graphql/examples/src/subscription/node_modules/enhanced-resolve/lib/forEachBail.js

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/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Tobias Koppers @sokra
*/
"use strict";

module.exports = function forEachBail(array, iterator, callback) {
	if(array.length === 0) return callback();
	let currentPos = array.length;
	let currentResult;
	let done = [];
	for(let i = 0; i < array.length; i++) {
		const itCb = createIteratorCallback(i);
		iterator(array[i], itCb);
		if(currentPos === 0) break;
	}

	function createIteratorCallback(i) {
		return(...args) => { // eslint-disable-line
			if(i >= currentPos) return; // ignore
			done.push(i);
			if(args.length > 0) {
				currentPos = i + 1;
				done = done.filter(item => {
					return item <= i;
				});
				currentResult = args;
			}
			if(done.length === currentPos) {
				callback.apply(null, currentResult);
				currentPos = 0;
			}
		};
	}
};

module.exports.withIndex = function forEachBailWithIndex(array, iterator, callback) {
	if(array.length === 0) return callback();
	let currentPos = array.length;
	let currentResult;
	let done = [];
	for(let i = 0; i < array.length; i++) {
		const itCb = createIteratorCallback(i);
		iterator(array[i], i, itCb);
		if(currentPos === 0) break;
	}

	function createIteratorCallback(i) {
		return(...args) => { // eslint-disable-line
			if(i >= currentPos) return; // ignore
			done.push(i);
			if(args.length > 0) {
				currentPos = i + 1;
				done = done.filter(item => {
					return item <= i;
				});
				currentResult = args;
			}
			if(done.length === currentPos) {
				callback.apply(null, currentResult);
				currentPos = 0;
			}
		};
	}
};