Is string s a non empty string?

is-non-empty-string.ts

/**
 * Is `s` both 1) defined, 2) a string, and 3) not empty?
 * Can also be used as a TS type predicate to remove `undefined` values.
 */
export function isNonEmptyString(s?: string): s is string {
  return Boolean(
    typeof s === 'string' &&
    s.length > 0
  );
}