router/scripts/publish.js

#!/usr/bin/env node
const spawnAsync = require("@expo/spawn-async");
const path = require("path");

const lerna = path.join(__dirname, "../node_modules/.bin/lerna");
const shouldPrerelease = isPrerelease();

function isPrerelease() {
  const bumpFlagIndex = process.argv.findIndex((arg) => arg === "--bump");
  const prereleaseArgIndex = process.argv.findIndex(
    (arg) => arg === "prerelease"
  );
  return (
    bumpFlagIndex !== -1 &&
    prereleaseArgIndex !== -1 &&
    bumpFlagIndex + 1 === prereleaseArgIndex
  );
}

async function run() {
  await spawnAsync(
    lerna,
    ["version", "--no-private", "--exact", ...process.argv.slice(2)],
    {
      stdio: "inherit",
    }
  );

  const packages = JSON.parse(
    (
      await spawnAsync(lerna, ["ls", "--toposort", "--json", "--no-private"], {
        stdio: ["inherit", "pipe", "inherit"],
      })
    ).stdout
  );

  console.log("🔎 Looking for packages to publish");
  const toPublish = [];
  for (const { name, version, location } of packages) {
    let packageViewStdout;
    try {
      packageViewStdout = (
        await spawnAsync("npm", ["view", "--json", name], {
          stdio: ["inherit", "pipe", "inherit"],
        })
      ).stdout;
    } catch (e) {
      const response = JSON.parse(e.stdout);
      if (response.error && response.error.code === "E404") {
        toPublish.push({ name, location });
        console.log(`* ${name} 🆕`);
      } else {
        throw e;
      }
      continue;
    }

    const packageView = JSON.parse(packageViewStdout);
    if (!packageView.versions.includes(version)) {
      toPublish.push({ name, location, version });
      console.log(`* ${name}`);
    }
  }

  if (toPublish.length === 0) {
    console.log("✅ No packages left to publish");
    return;
  }

  for (const { name, location, version } of toPublish) {
    console.log();
    console.log("🚢 Publishing", name);
    const args = ["publish", "--access", "public"];
    if (shouldPrerelease) {
      args.push("--tag", "alpha");
    }
    await spawnAsync("npm", args, {
      cwd: location,
      stdio: "inherit",
    });
    console.log("✅ Published", name);
  }
  console.log("❗❗❗ Make sure CHANGELOG.md is up to date ❗❗❗");
}

run().catch((error) => {
  console.error(error);
  process.exit(1);
});