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
39 lines
1.1 KiB
JavaScript
39 lines
1.1 KiB
JavaScript
'use strict';
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var GetIntrinsic = require('get-intrinsic');
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var callBound = require('call-bound');
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var $TypeError = require('es-errors/type');
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var isObject = require('es-object-atoms/isObject');
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var $RegExpPrototype = GetIntrinsic('%RegExp.prototype%');
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var SameValue = require('./SameValue');
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var $indexOf = callBound('String.prototype.indexOf');
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var hasRegExpMatcher = require('is-regex');
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var getFlags = require('regexp.prototype.flags');
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// https://262.ecma-international.org/13.0/#sec-regexphasflag
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module.exports = function RegExpHasFlag(R, codeUnit) {
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if (typeof codeUnit !== 'string' || codeUnit.length !== 1) {
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throw new $TypeError('Assertion failed: `string` must be a code unit - a String of length 1');
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}
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if (!isObject(R)) {
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throw new $TypeError('Assertion failed: Type(R) is not Object');
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}
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if (!hasRegExpMatcher(R)) { // step 2
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if (SameValue(R, $RegExpPrototype)) {
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return void undefined; // step 2.a
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}
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throw new $TypeError('`R` must be a RegExp object'); // step 2.b
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}
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var flags = getFlags(R); // step 3
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return $indexOf(flags, codeUnit) > -1; // steps 4-5
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};
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