Function checkSpecRange

packages/node/src/utils/substrate.ts:173–184

(
  specVersionRange: SpecVersionRange,
  specVersion: number,
)

}

function checkSpecRange(
  specVersionRange: SpecVersionRange,
  specVersion: number,
) {
  const [lowerBond, upperBond] = specVersionRange;
  return (
    (lowerBond === undefined ||
      lowerBond === null ||
      specVersion >= lowerBond) &&
    (upperBond === undefined || upperBond === null || specVersion <= upperBond)
  );
}

export function filterBlock(
  block: SubstrateBlock,