| 1 | var isSymbol = require('./isSymbol');
|
|---|
| 2 |
|
|---|
| 3 | /**
|
|---|
| 4 | * Compares values to sort them in ascending order.
|
|---|
| 5 | *
|
|---|
| 6 | * @private
|
|---|
| 7 | * @param {*} value The value to compare.
|
|---|
| 8 | * @param {*} other The other value to compare.
|
|---|
| 9 | * @returns {number} Returns the sort order indicator for `value`.
|
|---|
| 10 | */
|
|---|
| 11 | function compareAscending(value, other) {
|
|---|
| 12 | if (value !== other) {
|
|---|
| 13 | var valIsDefined = value !== undefined,
|
|---|
| 14 | valIsNull = value === null,
|
|---|
| 15 | valIsReflexive = value === value,
|
|---|
| 16 | valIsSymbol = isSymbol(value);
|
|---|
| 17 |
|
|---|
| 18 | var othIsDefined = other !== undefined,
|
|---|
| 19 | othIsNull = other === null,
|
|---|
| 20 | othIsReflexive = other === other,
|
|---|
| 21 | othIsSymbol = isSymbol(other);
|
|---|
| 22 |
|
|---|
| 23 | if ((!othIsNull && !othIsSymbol && !valIsSymbol && value > other) ||
|
|---|
| 24 | (valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol) ||
|
|---|
| 25 | (valIsNull && othIsDefined && othIsReflexive) ||
|
|---|
| 26 | (!valIsDefined && othIsReflexive) ||
|
|---|
| 27 | !valIsReflexive) {
|
|---|
| 28 | return 1;
|
|---|
| 29 | }
|
|---|
| 30 | if ((!valIsNull && !valIsSymbol && !othIsSymbol && value < other) ||
|
|---|
| 31 | (othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol) ||
|
|---|
| 32 | (othIsNull && valIsDefined && valIsReflexive) ||
|
|---|
| 33 | (!othIsDefined && valIsReflexive) ||
|
|---|
| 34 | !othIsReflexive) {
|
|---|
| 35 | return -1;
|
|---|
| 36 | }
|
|---|
| 37 | }
|
|---|
| 38 | return 0;
|
|---|
| 39 | }
|
|---|
| 40 |
|
|---|
| 41 | module.exports = compareAscending;
|
|---|