Function replaceCharAt

source/utils.ts:12–17

(str: string, index: number, char: string)

}

export function replaceCharAt(str: string, index: number, char: string): string {
    if (index > str.length - 1) {
        return str;
    }
    return str.substr(0, index) + char + str.substr(index + 1);
}