Function getValidIndex

apps/chart/src/component/plot.ts:21–23

(index: number, startIndex = 0)

};

function getValidIndex(index: number, startIndex = 0) {
  return ~~index ? index - startIndex : index;
}

function validXPosition({ axisData, offsetSize, value, startIndex = 0 }: XPositionParam) {
  const dataIndex = getValidIndex(value as number, startIndex);