abstract-eth

String Utils Helper

A lightweight and efficient collection of string manipulation and validation utilities for JavaScript.

Installation

npm install string-utils-helper

Usage

String Manipulation

const { toCamelCase, toSnakeCase, truncate, toTitleCase, removeWhitespace, reverse, countOccurrences } = require('string-utils-helper');

// Convert to camelCase
toCamelCase('hello-world');  // 'helloWorld'
toCamelCase('hello_world');  // 'helloWorld'
toCamelCase('Hello World');  // 'helloWorld'

// Convert to snake_case
toSnakeCase('helloWorld');   // 'hello_world'
toSnakeCase('hello world');  // 'hello_world'
toSnakeCase('hello-world');  // 'hello_world'

// Truncate strings
truncate('hello world', 8);  // 'hel...'
truncate('short', 10);       // 'short'

// Convert to Title Case
toTitleCase('hello world');  // 'Hello World'
toTitleCase('HELLO WORLD');  // 'Hello World'

// Remove whitespace
removeWhitespace('hello world');      // 'helloworld'
removeWhitespace('  hello  world  '); // 'helloworld'

// Reverse strings
reverse('hello');       // 'olleh'
reverse('hello world'); // 'dlrow olleh'

// Count occurrences
countOccurrences('hello hello world', 'hello'); // 2
countOccurrences('world', 'hello');            // 0

String Validation

const { isValidEmail, isValidUrl, isAlphanumeric } = require('string-utils-helper/validation');

// Validate email addresses
isValidEmail('[e-mail]');     // true
isValidEmail('invalid-email');        // false

// Validate URLs
isValidUrl('https://example.com');    // true
isValidUrl('not-a-url');             // false

// Check for alphanumeric strings
isAlphanumeric('abc123');            // true
isAlphanumeric('hello world');       // false

API

String Manipulation

toCamelCase(str)

Converts a string to camelCase format.

toSnakeCase(str)

Converts a string to snake_case format.

truncate(str, length)

Truncates a string to the specified length, adding '...' if truncated.

toTitleCase(str)

Capitalizes the first letter of each word in a string.

removeWhitespace(str)

Removes all whitespace from a string.

reverse(str)

Reverses a string.

countOccurrences(str, substr)

Counts the number of occurrences of a substring in a string.

String Validation

isValidEmail(email)

Checks if a string is a valid email address.

isValidUrl(url)

Checks if a string is a valid URL.

isAlphanumeric(str)

Checks if a string contains only alphanumeric characters.

Testing

Run the tests:

npm test

License

MIT