@zeix/ui-element/docs-src/server/replace-async.ts

UIElement - a HTML-first library for reactive Web Components

/**
 * Asynchronous replacement helper (handles async `.replace()` cases).
 */
export const replaceAsync = async (
	str: string,
	regex: RegExp,
	asyncFn: (match: string, ...args: any[]) => Promise<string>,
): Promise<string> => {
	const matches = Array.from(str.matchAll(regex)) // Collect matches properly
	if (matches.length === 0) return str // No matches, return as is

	// Process matches asynchronously
	const replacements = await Promise.all(
		matches.map(match => asyncFn(match[0], ...match.slice(1))),
	)

	// Replace in string
	let i = 0
	return str.replace(regex, () => replacements[i++]!)
}