Function checkExistingNpmVersion

scripts/release.ts:257–267

(pkgName: string, newVersion: string)

}

export async function checkExistingNpmVersion(pkgName: string, newVersion: string) {
  if (newVersion !== '0.0.1') {
    const npmVersionsCall = await execa('npm', ['view', pkgName, 'versions', '--json']);
    const publishedVersions: string[] = JSON.parse(npmVersionsCall.stdout);
    if (publishedVersions.includes(newVersion)) {
      panic(`Version "${newVersion}" of ${pkgName} is already published to npm`);
    } else {
      console.log(`✅ Version "${newVersion}" of ${pkgName} is not already published to npm`);
    }
  }
}

export async function releaseVersionPrompt(pkgName: string, currentVersion: string) {
  const answers = await prompts({