[backend] fix: 修复异常处理和类型转换问题

2026-01-26 11:53:40 +08:00
parent 7ccc2a6ac6
commit 83e05bf85f
28639 changed files with 2506458 additions and 93 deletions
@@ -0,0 +1,24 @@
+'use strict';
+
+var $RangeError = require('es-errors/range');
+
+var ToIntegerOrInfinity = require('./ToIntegerOrInfinity');
+var ToLength = require('./ToLength');
+var SameValue = require('./SameValue');
+
+// https://262.ecma-international.org/8.0/#sec-toindex
+
+module.exports = function ToIndex(value) {
+	if (typeof value === 'undefined') {
+		return 0;
+	}
+	var integerIndex = ToIntegerOrInfinity(value);
+	if (integerIndex < 0) {
+		throw new $RangeError('index must be >= 0');
+	}
+	var index = ToLength(integerIndex);
+	if (!SameValue(integerIndex, index)) {
+		throw new $RangeError('index must be >= 0 and < 2 ** 53 - 1');
+	}
+	return index;
+};