59 lines
5.9 KiB
JavaScript
59 lines
5.9 KiB
JavaScript
"use strict";
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function shallowEqual(a, b) {
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var k1 = Object.keys(a);
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var k2 = Object.keys(b);
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if (k1.length != k2.length) {
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return false;
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}
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var key;
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for (var i = 0; i < k1.length; i++) {
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key = k1[i];
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if (a[key] !== b[key]) {
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return false;
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}
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}
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return true;
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}
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exports.shallowEqual = shallowEqual;
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function flatten(a) {
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var target = [];
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for (var i = 0; i < a.length; ++i) {
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for (var j = 0; j < a[i].length; ++j) {
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target.push(a[i][j]);
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}
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}
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return target;
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}
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exports.flatten = flatten;
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function first(a) {
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return a.length > 0 ? a[0] : null;
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}
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exports.first = first;
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function and(bools) {
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return bools.reduce(function (a, b) { return a && b; }, true);
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}
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exports.and = and;
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function merge(m1, m2) {
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var m = {};
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for (var attr in m1) {
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if (m1.hasOwnProperty(attr)) {
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m[attr] = m1[attr];
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}
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}
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for (var attr in m2) {
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if (m2.hasOwnProperty(attr)) {
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m[attr] = m2[attr];
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}
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}
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return m;
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}
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exports.merge = merge;
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function forEach(map, callback) {
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for (var prop in map) {
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if (map.hasOwnProperty(prop)) {
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callback(map[prop], prop);
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}
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}
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}
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exports.forEach = forEach;
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