Introduction to url-parse-lax

url-parse-lax is a useful npm package designed to parse URLs with ease and correct inconsistencies in URLs. It improves the default URL parsing capabilities by being more lenient and user-friendly. Below, we delve into the core APIs provided by the library and offer numerous examples to ensure you can harness its potential effectively.

Installation

  
  npm install url-parse-lax
  

Core APIs and Usage

parseUrl(inputURL)

The primary function used to parse the given URL.

  
  const parseUrl = require('url-parse-lax');
  
  const url = parseUrl('http://example.com');
  console.log(url);
  

Output:

  
  URL {
    href: 'http://example.com/',
    origin: 'http://example.com',
    protocol: 'http:',
    username: '',
    password: '',
    host: 'example.com',
    hostname: 'example.com',
    port: '',
    pathname: '/',
    search: '',
    searchParams: URLSearchParams {},
    hash: ''
  }
  

Handling Protocol-less URLs

Automatically resolves protocol-less URLs to use http: as the default protocol.

  
  const url = parseUrl('example.com');
  console.log(url);
  

Output:

  
  URL {
    href: 'http://example.com/',
    origin: 'http://example.com',
    protocol: 'http:',
    ...
  }
  

Handling Missing Slashes

Auto-corrects URLs missing the required slashes after the protocol.

  
  const url = parseUrl('http:/example.com');
  console.log(url);
  

Output:

  
  URL {
    href: 'http://example.com/',
    origin: 'http://example.com',
    ...
  }
  

Application Example

Let’s build a simple node application that uses the url-parse-lax library to parse and display URL details for a user-provided URL.

  
  const parseUrl = require('url-parse-lax');
  const readline = require('readline');

  const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout
  });

  rl.question('Enter a URL: ', (input) => {
    const parsedUrl = parseUrl(input);
    console.log('Parsed URL:', parsedUrl);
    rl.close();
  });
  

This basic application prompts the user for a URL, parses it using url-parse-lax, and prints the parsed details.

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