1 | import isSymbol from './isSymbol.js';
|
---|
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 | export default compareAscending;
|
---|