Vlad Durnea
cffdf8af86
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42 lines
1.3 KiB
JavaScript
42 lines
1.3 KiB
JavaScript
var isSymbol = require('./isSymbol');
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/**
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* Compares values to sort them in ascending order.
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*
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* @private
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* @param {*} value The value to compare.
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* @param {*} other The other value to compare.
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* @returns {number} Returns the sort order indicator for `value`.
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*/
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function compareAscending(value, other) {
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if (value !== other) {
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var valIsDefined = value !== undefined,
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valIsNull = value === null,
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valIsReflexive = value === value,
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valIsSymbol = isSymbol(value);
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var othIsDefined = other !== undefined,
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othIsNull = other === null,
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othIsReflexive = other === other,
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othIsSymbol = isSymbol(other);
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if ((!othIsNull && !othIsSymbol && !valIsSymbol && value > other) ||
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(valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol) ||
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(valIsNull && othIsDefined && othIsReflexive) ||
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(!valIsDefined && othIsReflexive) ||
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!valIsReflexive) {
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return 1;
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}
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if ((!valIsNull && !valIsSymbol && !othIsSymbol && value < other) ||
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(othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol) ||
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(othIsNull && valIsDefined && valIsReflexive) ||
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(!othIsDefined && valIsReflexive) ||
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!othIsReflexive) {
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return -1;
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}
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}
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return 0;
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}
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module.exports = compareAscending;
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