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---

title: toPascalCase description: Converts a string to PascalCase with proper acronym handling

Usage

import { toPascalCase } from '@/lib/to-pascal-case';

const result = toPascalCase("hello world-example");
console.log(result); // "HelloWorldExample"

Installation

<InstallTabs component="to-pascal-case" />

Parameters

| Parameter | Type | Description | |-----------|----------|------------------| | str | string | The input string |

Returns

string - The PascalCased string.

Examples

toPascalCase("hello world-example"); // "HelloWorldExample"
toPascalCase("XMLHttpRequest"); // "XmlHttpRequest"
toPascalCase("user_name"); // "UserName"
toPascalCase("api-response"); // "ApiResponse"
toPascalCase("HTML parser"); // "HtmlParser"

Implementation

export function toPascalCase(str: string): string {
  return (
    str
      // Split acronym groups into proper boundaries
      .replace(/([A-Z]+)([A-Z][a-z])/g, '$1 $2')
      // Split between lowercase/digit and uppercase
      .replace(/([a-z\d])([A-Z])/g, '$1 $2')
      // Normalize spaces/underscores/dashes
      .replace(/[-_\s]+/g, ' ')
      // Lowercase all to normalize
      .toLowerCase()
      // Capitalize every word
      .replace(/\b\w/g, (c) => c.toUpperCase())
      // Remove spaces
      .replace(/\s+/g, '')
  );
}

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