Function resolveTimeDomain

packages/core/src/scales/domain.ts:99–131

(
  values: readonly Date[],
  input: TimeDomainInput = "auto"
)

};

export const resolveTimeDomain = (
  values: readonly Date[],
  input: TimeDomainInput = "auto"
): [Date, Date] => {
  const validTimes = values
    .map((value) => value.valueOf())
    .filter((value) => Number.isFinite(value));
  const dataMin = new Date(validTimes.length > 0 ? Math.min(...validTimes) : 0);
  const dataMax = new Date(validTimes.length > 0 ? Math.max(...validTimes) : 0);

  let domain: [Date, Date];

  if (input === "auto") {
    domain = [dataMin, dataMax];
  } else if (Array.isArray(input)) {
    domain = [
      resolveTimeInput(input[0], dataMin, dataMax, dataMin),
      resolveTimeInput(input[1], dataMin, dataMax, dataMax)
    ];
  } else {
    domain = [
      resolveTimeInput(input.min, dataMin, dataMax, dataMin),
      resolveTimeInput(input.max, dataMin, dataMax, dataMax)
    ];
  }

  if (domain[0].valueOf() === domain[1].valueOf()) {
    const center = domain[0].valueOf();
    return [new Date(center - 1), new Date(center + 1)];
  }

  return domain;
};

export const tickStep = (
  start: number,