| import ascending from "./ascending.js"; | |
| import minIndex from "./minIndex.js"; | |
| export default function leastIndex(values, compare = ascending) { | |
| if (compare.length === 1) return minIndex(values, compare); | |
| let minValue; | |
| let min = -1; | |
| let index = -1; | |
| for (const value of values) { | |
| ++index; | |
| if (min < 0 | |
| ? compare(value, value) === 0 | |
| : compare(value, minValue) < 0) { | |
| minValue = value; | |
| min = index; | |
| } | |
| } | |
| return min; | |
| } | |