Introduction to Logupdate

Logupdate is a versatile library for building interactive command-line applications. This article will take you through an extensive collection of Logupdate API functionalities, each accompanied by code snippets to help you swiftly integrate them into your projects.

Basic Setup

  
    const logUpdate = require('logupdate');

    function basicExample() {
        logUpdate('Hello World');
    }

    basicExample();
  

Clearing the Log

You can easily clear the log to update the display.

  
    const logUpdate = require('logupdate');

    function clearLog() {
        logUpdate.clear();
    }

    clearLog();
  

Preserving the Log Output

To preserve what has been logged before continuing with new output:

  
    const logUpdate = require('logupdate');

    function persistLog() {
        logUpdate.stdout.write('Initial log...');
        logUpdate('Updated log');
    }

    persistLog();
  

Multiple Lines Logging

Log multiple line outputs for better readability:

  
    const logUpdate = require('logupdate');

    function multipleLinesLogging() {
        logUpdate('Line 1\nLine 2\nLine 3');
    }

    multipleLinesLogging();
  

Integrating a Spinner

Add a spinner to indicate progress:

  
    const logUpdate = require('logupdate');
    const cliSpinners = require('cli-spinners');

    function spinnerExample() {
        let i = 0;
        const spinner = cliSpinners.dots;

        setInterval(() => {
            const {frames} = spinner;
            logUpdate(frames[i = ++i % frames.length] + ' Loading...');
        }, 80);
    }

    spinnerExample();
  

Styled Outputs

Style the log outputs using chalk:

  
    const logUpdate = require('logupdate');
    const chalk = require('chalk');

    function styledOutput() {
        logUpdate(chalk.blue('Blue text') + ' ' + chalk.red('Red text'));
    }

    styledOutput();
  

App Example

Here’s an example application integrating several of the above functionalities:

  
    const logUpdate = require('logupdate');
    const cliSpinners = require('cli-spinners');
    const chalk = require('chalk');

    function appExample() {
        let i = 0;
        const spinner = cliSpinners.dots;

        const interval = setInterval(() => {
            const {frames} = spinner;
            logUpdate(
                chalk.green('✔') + ' Initial setup\n' +
                frames[i = ++i % frames.length] + ' Loading resources...\n' +
                chalk.yellow('⚠') + ' Warning: Something minor\n'
            );

            if (i > 100) {
                clearInterval(interval);
                logUpdate.done();
            }
        }, 50);
    }

    appExample();
  

These examples should help you get started with Logupdate. Explore the library and enhance your command-line interfaces with dynamic and interactive outputs.

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