Function getLastKnownGood

sources/Engine.ts:35–70

()

}

export async function getLastKnownGood(): Promise<Record<string, string>> {
  let raw: string;
  try {
    raw = await fs.promises.readFile(getLastKnownGoodFilePath(), `utf8`);
  } catch (err) {
    if ((err as NodeError)?.code === `ENOENT`) {
      debugUtils.log(`No LastKnownGood version found in Corepack home.`);
      return {};
    }
    throw err;
  }

  try {
    const parsed = JSON.parse(raw);
    if (!parsed) {
      debugUtils.log(`Invalid LastKnowGood file in Corepack home (JSON parsable, but falsy)`);
      return {};
    }
    if (typeof parsed !== `object`) {
      debugUtils.log(`Invalid LastKnowGood file in Corepack home (JSON parsable, but non-object)`);
      return {};
    }
    Object.entries(parsed).forEach(([key, value]) => {
      if (typeof value !== `string`) {
        // Ensure that all entries are strings.
        debugUtils.log(`Ignoring key ${key} in LastKnownGood file as its value is not a string`);
        delete parsed[key];
      }
    });
    return parsed;
  } catch {
    // Ignore errors; too bad
    debugUtils.log(`Invalid LastKnowGood file in Corepack home (maybe not JSON parsable)`);
    return {};
  }
}

async function createLastKnownGoodFile(lastKnownGood: Record<string, string>) {
  const content = `${JSON.stringify(lastKnownGood, null, 2)}\n`;