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- var isSymbol = require('./isSymbol');
- function compareAscending(value, other) {
- if (value !== other) {
- var valIsDefined = value !== undefined,
- valIsNull = value === null,
- valIsReflexive = value === value,
- valIsSymbol = isSymbol(value);
- var othIsDefined = other !== undefined,
- othIsNull = other === null,
- othIsReflexive = other === other,
- othIsSymbol = isSymbol(other);
- if ((!othIsNull && !othIsSymbol && !valIsSymbol && value > other) ||
- (valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol) ||
- (valIsNull && othIsDefined && othIsReflexive) ||
- (!valIsDefined && othIsReflexive) ||
- !valIsReflexive) {
- return 1;
- }
- if ((!valIsNull && !valIsSymbol && !othIsSymbol && value < other) ||
- (othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol) ||
- (othIsNull && valIsDefined && valIsReflexive) ||
- (!othIsDefined && valIsReflexive) ||
- !othIsReflexive) {
- return -1;
- }
- }
- return 0;
- }
- module.exports = compareAscending;
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