Check versions published in GH pages (#68)

* gh-pages: update npm dependencies

* Check versions published in GH pages

* Tell TypeScript we are sure about the types

Author: mlocati

gh-pages/bin/create-cldr-data.js

@@ -2,6 +2,7 @@ import child_process from 'node:child_process';
 import fs from 'node:fs';
 import path from 'node:path';
 import {fileURLToPath} from 'node:url';
+import semver from 'semver';
 
 const PROJECT_ROOT = path
   .resolve(path.dirname(fileURLToPath(import.meta.url)), '..', '..')
@@ -18,8 +19,30 @@ const VERSIONS = JSON.parse(fs.readFileSync(`${DATADIR}/versions.json`));
 if (!fs.existsSync(`${DATADIR}/versions`)) {
   fs.mkdirSync(`${DATADIR}/versions`);
 }
+if (VERSIONS.length === 0) {
+  throw new Error('No versions found in versions.json');
+}
+VERSIONS.forEach((version, index) => {
+  if (index <= 0) {
+    return;
+  }
+  const previousVersion = VERSIONS[index - 1];
+  const previousVersionCoerced = semver.coerce(previousVersion, {includePrerelease: true});
+  if (!previousVersionCoerced) {
+    throw new Error(`Invalid version in ${DATADIR}/versions.json: ${previousVersion}`);
+  }
+  const versionCoerced = semver.coerce(version, {includePrerelease: true});
+  if (!versionCoerced) {
+    throw new Error(`Invalid version in ${DATADIR}/versions.json: ${version}`);
+  }
+  if (semver.lte(previousVersionCoerced.version, versionCoerced.version)) {
+    throw new Error(
+      `Versions in ${DATADIR}/versions.json are not in descending order: ${previousVersion} is greater than ${version}`,
+    );
+  }
+});
 
-for (let version of VERSIONS) {
+for (let version of VERSIONS.reverse()) {
   const outputFileCompressed = `${DATADIR}/versions/${version}.min.json`;
   const outputFileUncompressed = `${DATADIR}/versions/${version}.json`;
   if (