test-repo/scripts/release/steps/update-version.js

import {
  runYarn,
  logPromise,
  readJson,
  writeJson,
  processFile,
} from "../utils.js";

async function bump({ version }) {
  const pkg = await readJson("package.json");
  pkg.version = version;
  await writeJson("package.json", pkg);

  // Update github issue templates
  processFile(".github/ISSUE_TEMPLATE/formatting.md", (content) =>
    content.replace(/^(\*\*Prettier ).*?(\*\*)$/m, `$1${version}$2`)
  );
  processFile(".github/ISSUE_TEMPLATE/integration.md", (content) =>
    content.replace(/^(- Prettier Version: ).*$/m, `$1${version}`)
  );
  processFile("docs/install.md", (content) =>
    content.replace(/^(npx prettier@)\S+/m, `$1${version}`)
  );

  // Update unpkg link in docs
  processFile("docs/browser.md", (content) =>
    content.replace(/(\/\/unpkg\.com\/prettier@).*?\//g, `$1${version}/`)
  );

  await runYarn(["update-stable-docs"], {
    cwd: "./website",
  });
}

export default async function updateVersion(params) {
  await logPromise("Bumping version", bump(params));
}