70 lines
1.5 KiB
JavaScript
70 lines
1.5 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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module.exports = function forEachBail(array, iterator, callback) {
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if (array.length === 0) return callback();
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let currentPos = array.length;
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let currentResult;
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let done = [];
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for (let i = 0; i < array.length; i++) {
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const itCb = createIteratorCallback(i);
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iterator(array[i], itCb);
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if (currentPos === 0) break;
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}
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function createIteratorCallback(i) {
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return (...args) => {
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if (i >= currentPos) return; // ignore
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done.push(i);
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if (args.length > 0) {
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currentPos = i + 1;
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done = done.filter(item => {
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return item <= i;
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});
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currentResult = args;
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}
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if (done.length === currentPos) {
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callback.apply(null, currentResult);
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currentPos = 0;
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}
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};
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}
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};
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module.exports.withIndex = function forEachBailWithIndex(
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array,
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iterator,
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callback
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) {
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if (array.length === 0) return callback();
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let currentPos = array.length;
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let currentResult;
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let done = [];
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for (let i = 0; i < array.length; i++) {
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const itCb = createIteratorCallback(i);
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iterator(array[i], i, itCb);
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if (currentPos === 0) break;
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}
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function createIteratorCallback(i) {
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return (...args) => {
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if (i >= currentPos) return; // ignore
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done.push(i);
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if (args.length > 0) {
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currentPos = i + 1;
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done = done.filter(item => {
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return item <= i;
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});
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currentResult = args;
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}
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if (done.length === currentPos) {
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callback.apply(null, currentResult);
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currentPos = 0;
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}
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};
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}
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};
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