'use strict'; var $TypeError = require('es-errors/type'); var Call = require('./Call'); var SameValue = require('./SameValue'); var ToNumber = require('./ToNumber'); var isNaN = require('../helpers/isNaN'); // https://262.ecma-international.org/14.0/#sec-comparetypedarrayelements module.exports = function CompareTypedArrayElements(x, y, compareFn) { if ((typeof x !== 'number' && typeof x !== 'bigint') || typeof x !== typeof y) { throw new $TypeError('Assertion failed: `x` and `y` must be either a BigInt or a Number, and both must be the same type'); } if (typeof compareFn !== 'function' && typeof compareFn !== 'undefined') { throw new $TypeError('Assertion failed: `compareFn` must be a function or undefined'); } if (typeof compareFn !== 'undefined') { // step 2 var v = ToNumber(Call(compareFn, void undefined, [x, y])); // step 2.a if (isNaN(v)) { return 0; // step 2.b } return v; // step 2.c } var xNaN = isNaN(x); var yNaN = isNaN(y); if (xNaN && yNaN) { return 0; // step 3 } if (xNaN) { return 1; // step 4 } if (yNaN) { return -1; // step 5 } if (x < y) { return -1; // step 6 } if (x > y) { return 1; // step 7 } if (SameValue(x, -0) && SameValue(y, 0)) { return -1; // step 8 } if (SameValue(x, 0) && SameValue(y, -0)) { return 1; // step 9 } return 0; // step 10 };