feat: add insturctions on how to dump keys for v10

support/mac-command-loader.ts

@@ -0,0 +1,37 @@
+import { basename } from 'node:path';
+import { readFile } from 'node:fs/promises';
+import { Plugin } from 'vite';
+import tar from 'tar-stream';
+
+export const macCommandLoader: Plugin = {
+  name: 'mac-command-loader',
+  async transform(_: unknown, id: string) {
+    const [path, query] = id.split('?');
+    if (!query || !query.includes('mac-command')) return null;
+
+    const params = new URLSearchParams(query);
+
+    // Mac .command packer.
+    // - Create a tarball with the given file (a+x)
+    // - Encode to base64
+
+    const tarball = tar.pack();
+    const name = params.get('name') || `${basename(path)}.command`;
+    const data = await readFile(path);
+    tarball.entry({ name, mode: 0o755 }, data);
+    tarball.finalize();
+
+    const chunks: Buffer[] = [];
+    for await (const chunk of tarball) {
+      chunks.push(chunk as Buffer);
+    }
+    const dataBuffer = Buffer.concat(chunks);
+    const base64 = dataBuffer.toString('base64');
+
+    return `
+      export const tarball     = ${JSON.stringify(base64)};
+      export const commandName = ${JSON.stringify(name)};
+      export const tarName     = ${JSON.stringify(`${name}.tar`)};
+    `;
+  },
+};