Guide to integrating Chalk into Angular CLI version 6

As I work on my Angular CLI 6 application, I've been exploring ways to add some styling to my console logs using the Chalk package.

To test things out, I imported Chalk into my app.component.TS file like so:

import { component } from '@angular/core';
import * as chalk_ from 'chalk';

 @Component({
    //not important 
 })

export class AppComponent {
title = 'My App';

constructor() {
  console.log(chalk.blue('Hello'));
}

Interestingly, when I tried using chalk.blue, it threw an error saying "Property blue does not exist." However, changing it to chalk.default.blue resolved the issue and VS code showed no errors.

But, upon checking the browser console, I encountered this error: index.js:8 Uncaught ReferenceError: process is not defined.

I'm a bit stumped by this. It seems like other packages like Colors also require you to use require() for implementation, which feels outdated since it's in ES5 style...

const chalk = require('chalk');

or

var colors = require('colors/safe');

Answer №1

yes, the answers provided previously are accurate. However, if you want to add colors to your text in the chrome console, follow these steps:

console.log('%c This text will appear colored', 'color: blue; background: yellow;');

Answer №2

There seems to be an issue with using chalk for server-side JavaScript instead of web/browser (as indicated by the error message). It may be necessary to search for a different package that offers similar features but is designed for use in a web environment.

Answer №3

When it comes to styling console output, it's important to note that the use of ES5/CommonJS or ES6+ style like require or import is not relevant. Chalk, for example, does not support browsers according to this issue on GitHub, making it incompatible with Angular and other front-end script code. In fact, Chalk 2 even mandates Node.js version 4 or higher as a requirement.

To style your console output in the browser, you need to utilize the %c directive, as mentioned earlier.

If you want more information on styling console output, check out: https://developer.mozilla.org/en-US/docs/Web/API/console#Styling_console_output

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