@cnamts/vue-dot/src/functions/insertAt/index.ts

Implementation of our Design System for the French Health Insurance

/**
 * Insert string at a specific position
 * If the position doesn't exists, the replacement
 * will be inserted at the end or the start
 */
export function insertAt(source: string, index: number, replacement: string): string {
	return source.substring(0, index) + replacement + source.substring(index);
}