Understanding Callsite-Record in JavaScript

Callsite-Record is a powerful utility for JavaScript developers that helps track and log the callsite of your code. This can be extremely useful for debugging, profiling, and understanding the flow of a program.

Importing Callsite-Record

const callsiteRecord = require('callsite-record');

Basic Usage

To start using Callsite-Record, you first need to create a callsite record:

const record = callsiteRecord();

Customizing Output

You can customize the output format to suit your needs:

const record = callsiteRecord({ formatter: frame => {
  return `${frame.getFileName()}:${frame.getLineNumber()}:${frame.getColumnNumber()}`;
}});

Filtering Callsite Frames

Callsite-Record allows you to filter frames by properties such as file name and whether the callsite is within a specific module:

const record = callsiteRecord({
  filter: frame => frame.getFileName().includes('myModule')
});

Example Application

Here’s an example of a simple application that uses Callsite-Record to debug a function:

const callsiteRecord = require('callsite-record');

function debugFunction() {
  const record = callsiteRecord().renderSync();
  console.log(record);
}

function myFunction() {
  debugFunction();
}

myFunction();

In this example, debugFunction generates a callsite record and logs it to the console. When myFunction is called, it triggers debugFunction which logs the callsite information.

Conclusion

Callsite-Record is an invaluable tool for JavaScript developers looking to improve their debugging and profiling workflows. By integrating Callsite-Record into your projects, you can gain deeper insights into your code’s structure and execution flow.

Hash: 94ca976ecd8fbdc603f6616b73c7e1db8bfdde56b68e3269aad953ff72bf38f3