Function strArrayLen

ts/codediff/char-diffs.ts:7–9

(x: string[])

export type CharacterDiff = [OpType | 'skip' | null, number, number];

function strArrayLen(x: string[]) {
  return x.reduce((a, b) => a + b.length, 0);
}

function allWhitespace(x: string) {
  return !!/^\s*$/.exec(x);