flying-hero
96f6318101
新增: - backend/venv/ - Python 虚拟环境 - backend/start.sh - 启动脚本（使用虚拟环境） - backend/requirements.txt - 依赖列表 - .gitignore - 忽略虚拟环境和缓存文件 说明: - 每个项目使用独立虚拟环境 - 避免依赖冲突 - 启动脚本自动创建和激活虚拟环境
29 lines
990 B
JavaScript
29 lines
990 B
JavaScript
'use strict';
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var $TypeError = require('es-errors/type');
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var DefinePropertyOrThrow = require('./DefinePropertyOrThrow');
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var HasOwnProperty = require('./HasOwnProperty');
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var IsExtensible = require('./IsExtensible');
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var IsNonNegativeInteger = require('./IsNonNegativeInteger');
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// https://262.ecma-international.org/11.0/#sec-setfunctionlength
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module.exports = function SetFunctionLength(F, length) {
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if (typeof F !== 'function' || !IsExtensible(F) || HasOwnProperty(F, 'length')) {
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throw new $TypeError('Assertion failed: `F` must be an extensible function and lack an own `length` property');
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}
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if (typeof length !== 'number') {
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throw new $TypeError('Assertion failed: `length` must be a Number');
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}
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if (!IsNonNegativeInteger(length)) {
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throw new $TypeError('Assertion failed: `length` must be an integer >= 0');
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}
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return DefinePropertyOrThrow(F, 'length', {
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'[[Configurable]]': true,
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'[[Enumerable]]': false,
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'[[Value]]': length,
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'[[Writable]]': false
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});
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};
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