Update scripts

scripts/purge-cache.js

@@ -0,0 +1,60 @@
+const chalk = require('chalk');
+
+const { getZone, purgeFiles } = require('./utils/cloudflare');
+const { die } = require('./utils/process');
+const { getFiles } = require('./utils/unpkg');
+
+const packageName = process.argv[2];
+const version = process.argv[3];
+
+if (packageName == null) {
+  die(
+    'Missing the PACKAGE_NAME argument; use `node purge-cache.js PACKAGE_NAME VERSION`'
+  );
+}
+
+if (version == null) {
+  die(
+    'Missing the VERSION argument; use `node purge-cache.js PACKAGE_NAME VERSION`'
+  );
+}
+
+function groupBy(array, n) {
+  const groups = [];
+
+  while (array.length) {
+    groups.push(array.splice(0, n));
+  }
+
+  return groups;
+}
+
+getFiles(packageName, version)
+  .then(files => {
+    console.log(
+      chalk.yellow(
+        `Found ${files.length} files for package ${packageName}@${version}`
+      )
+    );
+
+    return getZone('unpkg.com').then(zone => {
+      let promise = Promise.resolve();
+
+      groupBy(files, 30).forEach(group => {
+        promise = promise.then(() => {
+          const urls = group.map(
+            file => `https://unpkg.com/${packageName}@${version}${file.path}`
+          );
+
+          return purgeFiles(zone.id, urls).then(data => {
+            group.forEach(file =>
+              console.log(chalk.green(`Purged ${file.path}`))
+            );
+          });
+        });
+      });
+
+      return promise;
+    });
+  })
+  .catch(die);