#!/usr/bin/env bunimport { appendFileSync } from "node:fs"; const RELEASE_VERSION_PATTERN =  /^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:-((?:0|[1-9]\d*|[A-Za-z-][0-9A-Za-z-]*)(?:\.(?:0|[1-9]\d*|[A-Za-z-][0-9A-Za-z-]*))*))?(?:\+([0-9A-Za-z-]+(?:\.[0-9A-Za-z-]+)*))?$/u; export const validateReleaseVersion = (value: string): string => {  if (!RELEASE_VERSION_PATTERN.test(value)) {    throw new Error(`Invalid release version: ${value}`);  }  return value;}; export const validateReleaseTag = (value: string): string => {  if (!value.startsWith("v")) {    throw new Error(`Invalid release tag: ${value}`);  }  validateReleaseVersion(value.slice(1));  return value;}; const readEnv = (name: string): string => {  const value = process.env[name];  if (!value) {    throw new Error(`Missing environment variable: ${name}`);  }  return value;}; const appendGitHubFile = (path: string | undefined, line: string): void => {  if (!path || !line) return;  appendFileSync(path, `${line}\n`, "utf8");}; const run = (): void => {  const args = process.argv.slice(2);  const tagEnv = readOption(args, "--tag-env");  const versionEnv = readOption(args, "--version-env");  const writeEnv = readOption(args, "--write-env");  const outputName = readOption(args, "--output");   if (tagEnv && versionEnv) {    throw new Error("Use either --tag-env or --version-env, not both");  }  if (!tagEnv && !versionEnv) {    throw new Error("Expected --tag-env or --version-env");  }   const tag = tagEnv    ? validateReleaseTag(readEnv(tagEnv))    : `v${validateReleaseVersion(readEnv(versionEnv!))}`;   appendGitHubFile(process.env.GITHUB_ENV, writeEnv ? `${writeEnv}=${tag}` : "");  appendGitHubFile(process.env.GITHUB_OUTPUT, outputName ? `${outputName}=${tag}` : "");  console.log(`Validated release tag ${tag}`);}; const readOption = (args: ReadonlyArray<string>, name: string): string | undefined => {  const index = args.indexOf(name);  if (index === -1) return undefined;  const value = args[index + 1];  if (!value || value.startsWith("--")) {    throw new Error(`Missing value for ${name}`);  }  return value;}; if (import.meta.main) {  run();}