export const TERMS = ["winter", "spring", "fall"] as const;
export type Term = typeof TERMS[number];

// https://www.typescriptlang.org/docs/handbook/2/narrowing.html#using-type-predicates
export function isTerm(x: string): x is Term {
  return TERMS.some((term) => x === term);
}

export function capitalize(str: string) {
  return str.slice(0, 1).toUpperCase() + str.slice(1);
}