| Path : /var/www/html/infraai.ai/frontend/node_modules/underscore/modules/ |
|
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| Current File : /var/www/html/infraai.ai/frontend/node_modules/underscore/modules/_createIndexFinder.js |
import getLength from './_getLength.js';
import { slice } from './_setup.js';
import isNaN from './isNaN.js';
// Internal function to generate the `_.indexOf` and `_.lastIndexOf` functions.
export default function createIndexFinder(dir, predicateFind, sortedIndex) {
return function(array, item, idx) {
var i = 0, length = getLength(array);
if (typeof idx == 'number') {
if (dir > 0) {
i = idx >= 0 ? idx : Math.max(idx + length, i);
} else {
length = idx >= 0 ? Math.min(idx + 1, length) : idx + length + 1;
}
} else if (sortedIndex && idx && length) {
idx = sortedIndex(array, item);
return array[idx] === item ? idx : -1;
}
if (item !== item) {
idx = predicateFind(slice.call(array, i, length), isNaN);
return idx >= 0 ? idx + i : -1;
}
for (idx = dir > 0 ? i : length - 1; idx >= 0 && idx < length; idx += dir) {
if (array[idx] === item) return idx;
}
return -1;
};
}