iteragain/dist/es5/findIndex.js

Javascript Iterable/Iterator/Generator-function utilities.

import toIterator from './toIterator';
export function findIndex() {
    var args = [];
    for (var _i = 0; _i < arguments.length; _i++) {
        args[_i] = arguments[_i];
    }
    if (args.length === 1)
        return function (it) { return findIndex(it, args[0]); };
    var it = toIterator(args[0]);
    var predicate = args[1];
    var next;
    var i = -1;
    while ((i++, !(next = it.next()).done))
        if (predicate(next.value))
            return i;
    return -1;
}
export default findIndex;
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