Function isStart

src/material/datepicker/calendar-body.ts:648–650

Checks whether a value is the start of a range.

(value: number, start: number | null, end: number | null)

/** Checks whether a value is the start of a range. */
function isStart(value: number, start: number | null, end: number | null): boolean {
  return end !== null && start !== end && value < end && value === start;
}

/** Checks whether a value is the end of a range. */
function isEnd(value: number, start: number | null, end: number | null): boolean {