@prelude/array/cjs/modulo.js

Array module.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
/**
 * Like `at` but wraps using modulo on length.
 * @throws {TypeError} if array is empty or index is not a safe integer.
 */
const modulo = (values, index) => {
    if (!Number.isSafeInteger(index)) {
        throw new TypeError(`Expected safe integer index, got ${index}.`);
    }
    const n = values.length;
    if (n === 0) {
        throw new TypeError('Expected non empty array.');
    }
    return values[((index % n) + n) % n];
};
exports.default = modulo;
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