mout/src/number/nth.ts

Modular Utilities

/**
 * Returns "nth" of number (1 = "st", 2 = "nd", 3 = "rd", 4..10 = "th", ...)
 */
function nth(i: number): string {
    const t = i % 100;
    if (t >= 10 && t <= 20) {
        return 'th';
    }
    switch (i % 10) {
        case 1:
            return 'st';
        case 2:
            return 'nd';
        case 3:
            return 'rd';
        default:
            return 'th';
    }
}

export default nth;