util.ts

/**
 * Utility functions for the Lightscripts Workshop
 */

/**
 * Gets a URL parameter by name
 * @param name The name of the parameter to get
 * @param url Optional URL string (default: window.location.href)
 * @returns The parameter value or null if not found
 */
export function getParameterByName(paramName: string, url = window.location.href): string | null {
    const safeName = paramName.replace(/[[\]]/g, '\\$&')
    const regex = new RegExp(`[?&]${safeName}(=([^&#]*)|&|#|$)`)
    const results = regex.exec(url)
    if (!results) return null
    if (!results[2]) return ''
    return decodeURIComponent(results[2].replace(/\+/g, ' '))
}