next-release.ts

import getReleasePlan from '@changesets/get-release-plan';

async function createNextRelease() {
  const releasePlan = await getReleasePlan(process.cwd());

  try {
    /** Get the commit hash from the latest commit */
    const proc = Bun.spawn(['git', 'rev-parse', '--short', 'HEAD']);
    const commitHash = (await new Response(proc.stdout).text()).trim();

    /**
     * Parse the package.json for `create-expo-stack`, and update it with the new
     * "next" (development) version based on the parsed changesets
     */
    const packageJson = await Bun.file(process.cwd() + '/cli/package.json').json();
    const newNextVersion = releasePlan.releases.find((release) => release.name === packageJson.name)?.newVersion;

    if (newNextVersion) {
      /**
       * Write the new "next" version to `package.json`. It is an ephemeral change
       * that lives only for the duration of the CI run, and is not committed
       */
      packageJson.version = `${newNextVersion}-next.${commitHash}`;

      const content = JSON.stringify(packageJson, null, '\t') + '\n';
      await Bun.write(process.cwd() + '/cli/package.json', content);
    }
  } catch (error) {
    console.log(error);
    process.exit(1);
  }
}

await createNextRelease();