JavaScript 代码执行前的错误检测

发布于 2025-01-13 22:31:17 字数 789 浏览 3 评论 0原文

是否可以在代码开始运行之前检测到错误？
我有一个 Discord 机器人，我希望命令处理程序将所有加载的命令打印到控制台，以提前显示错误状态。目前的命令处理程序：

const { readdirSync } = require("fs");
const ascii = require("ascii-table");
const list = new ascii('Commands');
list.setHeading('Command', 'Loaded');
module.exports = (bot) => {
    let commands = readdirSync(`./commands/`).filter(file => file.endsWith(".js"));
    for (let file of commands) {
        let command = require(`../commands/${file}`);
        if (command.name) {
            bot.commands.set(command.name, command);
            list.addRow(file, '✅');
        } else {
            list.addRow(file, '❌');
            continue;
        }
    }
    console.log(list.toString());
}

原文

Is it possible to detect errors before the code starts to run?
I have a Discord bot, and I would like the command handler that prints all loaded commands to the console to show the status for errors in advance.
Command handler at the moment:

const { readdirSync } = require("fs");
const ascii = require("ascii-table");
const list = new ascii('Commands');
list.setHeading('Command', 'Loaded');
module.exports = (bot) => {
    let commands = readdirSync(`./commands/`).filter(file => file.endsWith(".js"));
    for (let file of commands) {
        let command = require(`../commands/${file}`);
        if (command.name) {
            bot.commands.set(command.name, command);
            list.addRow(file, '✅');
        } else {
            list.addRow(file, '❌');
            continue;
        }
    }
    console.log(list.toString());
}

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揽清风入怀 2025-01-20 22:31:17

您可以简单地使用 Javascript 的 try 和 catch 语句。这样，即使错误仍然发生，也不会破坏您的代码或机器人。它将继续运行，没有任何问题。

如果您不想显示任何内容并希望继续运行机器人：

try {
  const { readdirSync } = require("fs");
  const ascii = require("ascii-table");
  const list = new ascii("Commands");
  list.setHeading("Command", "Loaded");
  module.exports = (bot) => {
    let commands = readdirSync(`./commands/`).filter((file) =>
      file.endsWith(".js")
    );
    for (let file of commands) {
      let command = require(`../commands/${file}`);
      if (command.name) {
        bot.commands.set(command.name, command);
        list.addRow(file, "✅");
      } else {
        list.addRow(file, "❌");
        continue;
      }
    }
    console.log(list.toString());
  };
} catch (e) {
  // Don't do anything
}

如果您希望将错误打印到控制台并继续运行机器人。然后你可以在catch语句下添加一个console.log()：

try {
  const { readdirSync } = require("fs");
  const ascii = require("ascii-table");
  const list = new ascii("Commands");
  list.setHeading("Command", "Loaded");
  module.exports = (bot) => {
    let commands = readdirSync(`./commands/`).filter((file) =>
      file.endsWith(".js")
    );
    for (let file of commands) {
      let command = require(`../commands/${file}`);
      if (command.name) {
        bot.commands.set(command.name, command);
        list.addRow(file, "✅");
      } else {
        list.addRow(file, "❌");
        continue;
      }
    }
    console.log(list.toString());
  };
} catch (e) {
  console.log(e)
}

You can simply use the try and catch statements of Javascript. In this way, if an error occurs still it will not break your code or bot. It will continue running without any problem.

If you don't want to show anything and want to continue running the bot:

try {
  const { readdirSync } = require("fs");
  const ascii = require("ascii-table");
  const list = new ascii("Commands");
  list.setHeading("Command", "Loaded");
  module.exports = (bot) => {
    let commands = readdirSync(`./commands/`).filter((file) =>
      file.endsWith(".js")
    );
    for (let file of commands) {
      let command = require(`../commands/${file}`);
      if (command.name) {
        bot.commands.set(command.name, command);
        list.addRow(file, "✅");
      } else {
        list.addRow(file, "❌");
        continue;
      }
    }
    console.log(list.toString());
  };
} catch (e) {
  // Don't do anything
}

Incase you want to print out the error to the console and continue running the bot. Then you can add a console.log() under the catch statement:

try {
  const { readdirSync } = require("fs");
  const ascii = require("ascii-table");
  const list = new ascii("Commands");
  list.setHeading("Command", "Loaded");
  module.exports = (bot) => {
    let commands = readdirSync(`./commands/`).filter((file) =>
      file.endsWith(".js")
    );
    for (let file of commands) {
      let command = require(`../commands/${file}`);
      if (command.name) {
        bot.commands.set(command.name, command);
        list.addRow(file, "✅");
      } else {
        list.addRow(file, "❌");
        continue;
      }
    }
    console.log(list.toString());
  };
} catch (e) {
  console.log(e)
}

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