| 1 | /* tslint:disable */
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| 2 | /**
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| 3 | * @name equals
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| 4 | *
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| 5 | * @description
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| 6 | * Determines if two objects or two values are equivalent.
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| 7 | *
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| 8 | * Two objects or values are considered equivalent if at least one of the following is true:
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| 9 | *
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| 10 | * * Both objects or values pass `===` comparison.
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| 11 | * * Both objects or values are of the same type and all of their properties are equal by
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| 12 | * comparing them with `equals`.
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| 13 | *
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| 14 | * @param {*} o1 Object or value to compare.
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| 15 | * @param {*} o2 Object or value to compare.
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| 16 | * @returns {boolean} True if arguments are equal.
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| 17 | */
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| 18 | export function equals(o1, o2) {
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| 19 | if (o1 === o2)
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| 20 | return true;
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| 21 | if (o1 === null || o2 === null)
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| 22 | return false;
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| 23 | if (o1 !== o1 && o2 !== o2)
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| 24 | return true; // NaN === NaN
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| 25 | var t1 = typeof o1, t2 = typeof o2, length, key, keySet;
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| 26 | if (t1 == t2 && t1 == 'object') {
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| 27 | if (Array.isArray(o1)) {
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| 28 | if (!Array.isArray(o2))
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| 29 | return false;
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| 30 | if ((length = o1.length) == o2.length) {
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| 31 | for (key = 0; key < length; key++) {
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| 32 | if (!equals(o1[key], o2[key]))
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| 33 | return false;
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| 34 | }
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| 35 | return true;
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| 36 | }
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| 37 | }
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| 38 | else {
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| 39 | if (Array.isArray(o2)) {
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| 40 | return false;
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| 41 | }
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| 42 | keySet = Object.create(null);
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| 43 | for (key in o1) {
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| 44 | if (!equals(o1[key], o2[key])) {
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| 45 | return false;
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| 46 | }
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| 47 | keySet[key] = true;
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| 48 | }
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| 49 | for (key in o2) {
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| 50 | if (!(key in keySet) && typeof o2[key] !== 'undefined') {
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| 51 | return false;
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| 52 | }
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| 53 | }
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| 54 | return true;
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| 55 | }
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| 56 | }
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| 57 | return false;
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| 58 | }
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| 59 | /* tslint:enable */
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| 60 | export function isDefined(value) {
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| 61 | return typeof value !== 'undefined' && value !== null;
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| 62 | }
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