export async function emitSupportPolicyInformation()

in src/support.ts [41:95]
47 lines of code
9 McCabe index (conditional complexity)

export async function emitSupportPolicyInformation() {
  if (process.env[SILENCE_ENV_VAR]) {
    return;
  }

  const data = await getReleasesDocument();

  if (data.current == RELEASE_LINE) {
    // Current release is not close to deprecation
    return;
  }

  const endOfSupportDate = data.endOfSupport?.includes(RELEASE_LINE) ? new Date(0) : data.maintenance[RELEASE_LINE];
  if (endOfSupportDate == null) {
    // Don't know the status, so don't say anything...
    return;
  }

  const now = new Date();
  const inThirtyDays = new Date(now.getTime() + THIRTY_DAYS_IN_MILLIS);
  const alternatives = Object.entries(data.maintenance)
    .flatMap(([release, dateStr]) => {
      const date = new Date(dateStr);
      if (date <= inThirtyDays) {
        return [];
      }
      return [{ release, date }];
    })
    .reduce((acc, { release, date }) => {
      if (acc.length === 0) {
        acc.push('', 'Other actively supported release lines include:');
      }
      acc.push(`- ${release} (planned End-of-Support date: ${date.toISOString().split('T')[0]})`);
      return acc;
    }, new Array<string>());
  if (endOfSupportDate <= now) {
    // End-of-Support already!
    veryVisibleMessage(
      chalk.bgRed.white.bold,
      `The ${RELEASE_LINE} release line of jsii has reached End-of-Support.`,
      `We strongly recommend you upgrade to the current release line (${data.current}) at your earliest convenience.`,
      ...alternatives,
    );
  } else if (endOfSupportDate <= inThirtyDays) {
    // End-of-Support within 30 days!
    veryVisibleMessage(
      chalk.bgYellow.black,
      `The ${RELEASE_LINE} release line of jsii will reach End-of-Support soon, on ${
        endOfSupportDate.toISOString().split('T')[0]
      }.`,
      `We strongly recommend you upgrade to the current release line (${data.current}) at your earliest convenience.`,
      ...alternatives,
    );
  }
}