misc: convert all internal scripts to ESM (#6286)

* misc: convert all internal scripts to ESM

* fixes

* fix

* fixes

* fix!

* complete eslint

* more move

* fix!

* This looks better?

* Final ones

website/waitForCrowdin.mjs

@@ -0,0 +1,59 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import {Translations} from '@crowdin/crowdin-api-client';
+
+/*
+Crowdin does not support concurrent "project builds" (downloads of translations).
+The Crowdin CLI fails with error 409, and it leads to failures on Netlify.
+
+On Docusaurus, when we commit on main, we have 2 Netlify deployments triggered:
+- prod
+- i18n-staging (work-in-progress locales)
+
+This script helps the 2 deployments to not download translations concurrently from Crowdin.
+ */
+
+const pollInterval = 5000;
+const timeout = 5 * 60 * 1000;
+
+const projectId = 428890;
+const token = process.env.CROWDIN_PERSONAL_TOKEN; // set on Netlify
+
+const translations = new Translations({token});
+
+async function delay(ms) {
+  return new Promise((resolve) => {
+    setTimeout(resolve, ms);
+  });
+}
+
+async function hasBuildInProgress() {
+  const projectBuilds = await translations.listProjectBuilds(projectId);
+  return projectBuilds.data.some((build) => build.data.status === 'inProgress');
+}
+
+const timeBefore = Date.now();
+
+// eslint-disable-next-line no-constant-condition
+while (true) {
+  if (Date.now() - timeBefore > timeout) {
+    console.warn(
+      '[Crowdin] Timeout of wait script reached => will try to proceed but download translations is likely to fail...',
+    );
+    break;
+  }
+
+  const inProgress = await hasBuildInProgress();
+  if (inProgress) {
+    console.log('[Crowdin] A build is still in progress => waiting...');
+    await delay(pollInterval);
+  } else {
+    console.warn("[Crowdin] No build in progress => let's continue");
+    break;
+  }
+}