Code coverage report for src/findIndex.js

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function findIndex(xs, iteratee, thisArg) {
    let fn = thisArg ? iteratee.bind(thisArg) : iteratee;
    let i = 0;
 
    for (let x of xs) {
        if (fn(x, i, xs)) {
            return i;
        }
 
        i += 1;
    }
 
    return -1;
}
 
export default findIndex;