Console Log Wrapper That Keeps Line Numbers And Supports Most Methods Closed

A console log wrapper is a handy tool for developers working on JavaScript projects. It allows you to enhance the default console log functionality with additional features that can streamline your debugging process. One common challenge faced by developers is that when using console.log, the line numbers in the console do not match the actual line numbers in the code due to the wrapper function. In this article, we will explore how you can create a console log wrapper that retains line numbers and supports most console methods.

To start, let's create a simple console log wrapper function that preserves the line numbers:

function customConsoleLog() {
  const stackInfo = new Error().stack.split("n")[2].trim();
  const line = stackInfo.match(/(/|\).+:(d+):(d+)/);

  console.log(`Line ${line[2]}:`, ...arguments);
}

In this function, we capture the stack trace information using `new Error().stack` and extract the line number using a regular expression. By doing this, the console log output will now correctly display the line numbers from your code.

Next, let's add support for other console methods like `warn`, `error`, and `info`:

const customConsole = {
  log: customConsoleLog,
  warn: (...args) => console.warn("Line:", ...args),
  error: (...args) => console.error("Line:", ...args),
  info: (...args) => console.info("Line:", ...args)
}

// Replace the default console object with our customConsole
console = customConsole;

Here, we create an object `customConsole` that contains custom implementations for different console methods. By assigning this object to the `console` global object, we can now use our custom console methods throughout our codebase.

One important thing to note is that overriding global objects like `console` can have unintended consequences, especially in large codebases with multiple dependencies. It's crucial to thoroughly test the behavior of your custom console wrapper in different scenarios to ensure it doesn't introduce any compatibility issues.

In conclusion, creating a console log wrapper that retains line numbers and supports most console methods can be a valuable addition to your development toolkit. By customizing the console functionality, you can improve the accuracy of your debugging process and make it easier to identify issues in your code. Remember to test your wrapper thoroughly and consider the implications of modifying global objects before implementing it in your projects. Happy coding!