使用g修饰符进行正则表达式测试，有时不通过测试其他修饰符

Question

我有这个代码：

＆＃13;

＆＃13;

    console.log(/\.js$/gi.test('src/public/app/cookieMsgs/cookieMsgs.js'));
    
    const pathReplaces = {};
    function getPathReplace(path) {
        if (!pathReplaces[path]) {
            pathReplaces[path] = new RegExp(`^${path}\/?`, 'gi');
        }
        return pathReplaces[path];
    }
    
    function copyFiles(files, path, dest, opts = {}) {
        const pathReplace = getPathReplace(path);
        const isProcessFileCfg = (opts.exclude !== undefined) || (opts.include === undefined) || (!opts.exclude && !opts.include);
        const popts = opts.exclude || opts.include || [];
        let fileParts;
        let fileName;
        let isProcessFile;
        for (let file of files) {
            try {
                console.log(file);
                isProcessFile = isProcessFileCfg;
                for (let opt of popts) {
                    console.log(opt, file, isProcessFile);
                    if (opt.test(file)) {
                        isProcessFile = !isProcessFile;
                        console.log('Test result:', isProcessFile);
                        break;
                    }
                }
    
                if (isProcessFile) {
                    fileParts = file.replace(pathReplace, '').split('/');
                    fileName = fileParts.pop();
                }
            } catch (err) {
                console.log(err);
            }
        }
    }
    
    function test() {
        copyFiles([
            'src/public/app/app.js',
            'src/public/app/checkout/directCard.js',
            'src/public/app/cookieMsgs/cookieMsgs.js',
        ], 'src/public', 'build', { exclude: [/\.js$/gi, /\.css$/gi, /\.html$/gi]});
    }

    test();

＆＃13;

＆＃13;

＆＃13;

输出真的很奇怪，您可以see test in here复制粘贴babeljs.io中的代码：

true
src/public/app/app.js
/\.js$/gi src/public/app/app.js true
Test result: false
src/public/app/checkout/directCard.js
/\.js$/gi src/public/app/checkout/directCard.js true
Test result: false
src/public/app/cookieMsgs/cookieMsgs.js
/\.js$/gi src/public/app/cookieMsgs/cookieMsgs.js true
/\.css$/gi src/public/app/cookieMsgs/cookieMsgs.js true
/\.html$/gi src/public/app/cookieMsgs/cookieMsgs.js true

发生了什么事？我无法理解为什么/\.js$/gi.test('src/public/app/checkout/cookieMsgs.js')通过了测试，但是在for (.. of ...)内部完成时，它没有通过测试......