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node_modules/es-abstract/2023/IsLessThan.js

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+'use strict';
+
+var GetIntrinsic = require('get-intrinsic');
+
+var $Number = GetIntrinsic('%Number%');
+var $TypeError = require('es-errors/type');
+var min = require('math-intrinsics/min');
+var $isNaN = require('math-intrinsics/isNaN');
+
+var $charCodeAt = require('call-bound')('String.prototype.charCodeAt');
+
+var StringToBigInt = require('./StringToBigInt');
+var ToNumeric = require('./ToNumeric');
+var ToPrimitive = require('./ToPrimitive');
+
+var BigIntLessThan = require('./BigInt/lessThan');
+var NumberLessThan = require('./Number/lessThan');
+
+// https://262.ecma-international.org/14.0/#sec-islessthan
+
+// eslint-disable-next-line max-statements, max-lines-per-function
+module.exports = function IsLessThan(x, y, LeftFirst) {
+	if (typeof LeftFirst !== 'boolean') {
+		throw new $TypeError('Assertion failed: LeftFirst argument must be a Boolean');
+	}
+	var px;
+	var py;
+	if (LeftFirst) {
+		px = ToPrimitive(x, $Number);
+		py = ToPrimitive(y, $Number);
+	} else {
+		py = ToPrimitive(y, $Number);
+		px = ToPrimitive(x, $Number);
+	}
+
+	if (typeof px === 'string' && typeof py === 'string') { // step 3
+		// a. Let lx be the length of px.
+		// b. Let ly be the length of py.
+		// c. For each integer i starting with 0 such that i < min(lx, ly), in ascending order, do
+		// i. Let cx be the integer that is the numeric value of the code unit at index i within px.
+		// ii. Let cy be the integer that is the numeric value of the code unit at index i within py.
+		// iii. If cx < cy, return true.
+		// iv. If cx > cy, return false.
+		// d. If lx < ly, return true. Otherwise, return false.
+
+		var lx = px.length; // step 3.a
+		var ly = py.length; // step 3.b
+		for (var i = 0; i < min(lx, ly); i++) { // step 3.c
+			var cx = $charCodeAt(px, i); // step 3.c.i
+			var cy = $charCodeAt(py, i); // step 3.c.ii
+			if (cx < cy) {
+				return true; // step 3.c.iii
+			}
+			if (cx > cy) {
+				return false; // step 3.c.iv
+			}
+		}
+		return lx < ly; // step 3.d
+	}
+
+	var nx;
+	var ny;
+	if (typeof px === 'bigint' && typeof py === 'string') {
+		ny = StringToBigInt(py);
+		if (typeof ny === 'undefined') {
+			return void undefined;
+		}
+		return BigIntLessThan(px, ny);
+	}
+	if (typeof px === 'string' && typeof py === 'bigint') {
+		nx = StringToBigInt(px);
+		if (typeof nx === 'undefined') {
+			return void undefined;
+		}
+		return BigIntLessThan(nx, py);
+	}
+
+	nx = ToNumeric(px);
+	ny = ToNumeric(py);
+
+	if (typeof nx === typeof ny) {
+		return typeof nx === 'number' ? NumberLessThan(nx, ny) : BigIntLessThan(nx, ny);
+	}
+
+	if ($isNaN(nx) || $isNaN(ny)) {
+		return void undefined;
+	}
+
+	if (nx === -Infinity || ny === Infinity) {
+		return true;
+	}
+	if (nx === Infinity || ny === -Infinity) {
+		return false;
+	}
+
+	return nx < ny; // by now, these are both finite, and the same type
+};