javascript - 使用 Node/TMI.js 命令的冷却时间

Question

我目前正在使用 TMI.js，它是一个用于在 Twitch 中构建机器人的 Node 包。不过我真的可以使用冷却系统〜一旦你执行一个命令 !test 这是一个测试命令。 您需要等待 10 秒才能再次触发，如果您尝试在这 10 秒内使用它，我希望什么也不会发生。
谢谢。

Answer 1

编写冷却包装函数:

// thisArg - context in which to call the function; 'this' in the function's body
// fn - function to execute on a cooldown
// timeout - number of milliseconds to wait before allowing fn to be called again
var cooldown = function (thisArg, fn, timeout) {
    var onCooldown = false;

    // return a function that can be called the same way as the wrapped function
    return function (/* args */) {

        // only call the original function if it is not on cooldown
        if (!onCooldown) {

            // not on cooldown, so call the function with the correct context
            // and the arguments with which this wrapper was called
            fn.apply(thisArg, arguments);

            // set the cooldown flag so subsequent calls will not execute the function
            onCooldown = true;

            // wait <timeout> milliseconds before allowing the function to be called again
            setTimeout(function () {
                onCooldown = false;
            }, timeout);
        }
    }
}

并像这样使用它:

var cooldownLog = cooldown(console, console.log, 5000);

cooldownLog('hello')   // => 'hello'
cooldownLog('hello')   // nothing happens
cooldownLog('hello')   // nothing happens

// > 5000ms later
cooldownLog('hello')   // => 'hello'
cooldownLog('hello')   // nothing happens