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41 lines
1.3 KiB
41 lines
1.3 KiB
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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