Function compareVersion

src/common/util.js:146–156

(ver1, ver2)

/** @return -1 | 0 | 1 */
export function compareVersion(ver1, ver2) {
  // Used in safe context
  // eslint-disable-next-line no-restricted-syntax
  const [, main1 = ver1 || '', pre1] = VERSION_RE.exec(ver1);
  // eslint-disable-next-line no-restricted-syntax
  const [, main2 = ver2 || '', pre2] = VERSION_RE.exec(ver2);
  const delta = compareVersionChunk(main1, main2)
    || !pre1 - !pre2 // 1.2.3-pre-release is less than 1.2.3
    || pre1 && compareVersionChunk(pre1, pre2, true); // if pre1 is present, pre2 is too
  return delta < 0 ? -1 : +!!delta;
}

function compareVersionChunk(ver1, ver2, isSemverMode) {
  const parts1 = ver1.split('.');