ci: check that monorepo versions are in sync

.circleci/config.yml

@@ -118,6 +118,15 @@ jobs:
       - run:
           name: Linting CSS
           command: yarn run lint:css
+  test_metadata:
+    <<: *defaults
+    steps:
+      - checkout
+      - *attach_workspace
+      - run: *install_yarn_version
+      - run:
+          name: Test package versions
+          command: yarn run test:versions
   test_types:
     <<: *defaults
     steps:
@@ -177,6 +186,7 @@ workflows:
   ci:
     jobs:
       - build
+      - test_metadata
       - test_lint:
           requires:
             - build

package.json

@@ -21,6 +21,7 @@
     "start": "yarn run watch",
     "test:size": "bundlesize",
     "test:types": "tsc --noEmit",
+    "test:versions": "./test/versions/index.js",
     "test": "jest",
     "watch": "lerna run watch --parallel --no-private"
   },

test/versions/index.js

@@ -0,0 +1,60 @@
+#!/usr/bin/env node
+/* eslint-disable no-process-exit, no-console, import/no-commonjs */
+const fs = require('fs');
+const path = require('path');
+
+// This file does not use any dependencies, so that it can be ran before installing
+
+// It checks whether the versions of packages that should be versioned synchronously
+// are actually in sync. We need this as long as Lerna doesn't have a mixed mode.
+// see: https://github.com/lerna/lerna/issues/1159
+
+let hasError = false;
+const expectedVersion = require('../../lerna.json').version;
+const packages = fs.readdirSync(path.join(__dirname, '../../packages'));
+
+const results = packages.map((package) => {
+  const version = require(path.join(
+    __dirname,
+    `../../packages/${package}/package.json`
+  )).version;
+  return { isValid: version === expectedVersion, package, version };
+});
+
+if (results.some(({ isValid }) => !isValid)) {
+  console.error(
+    [
+      'Package version mismatch detected!',
+      `- Expected: ${expectedVersion}`,
+      '- Received:',
+    ].join('\n')
+  );
+  console.error(results.filter(({ isValid }) => !isValid));
+  hasError = true;
+} else {
+  console.log('Package versions are in sync.');
+}
+
+console.log('');
+
+const sharedVersion = fs.readFileSync(
+  path.join(__dirname, '../../packages/autocomplete-shared/src/version.ts'),
+  { encoding: 'utf-8' }
+);
+
+if (sharedVersion !== `export const version = '${expectedVersion}';\n`) {
+  console.error(
+    [
+      'Shared version mismatch detected!',
+      `- Expected: ${expectedVersion}`,
+      `- Received: ${sharedVersion}`,
+    ].join('\n')
+  );
+  hasError = true;
+} else {
+  console.log('Shared version file is in sync.');
+}
+
+if (hasError) {
+  process.exit(1);
+}