1 files changed, 67 insertions, 0 deletions
diff --git a/src/background.ts b/src/background.ts
new file mode 100644
index 0000000..65d7187
--- /dev/null
+++ b/src/background.ts
@@ -0,0 +1,67 @@
+import browser from 'webextension-polyfill';
+import type { UserlandBrowser } from './routes/userland';
+
+console.debug('Loading Extension');
+setTimeout(async () => {
+  const { sc } = await browser.storage.local.get('sc');
+  if (typeof sc === 'undefined') {
+    console.warn('No value set!');
+  } else if (typeof sc !== 'string') {
+    throw new Error('typeof sc is not str nor undefined');
+  } else {
+    console.debug('Found Script (length', sc.length, ':3)');
+    console.debug('Loading esbuild-wasm');
+    const { initialize, transform } = await import('esbuild-wasm').catch(
+      (e) => {
+        console.error('Failed to load esbuild-wasm!');
+        throw e;
+      }
+    );
+    console.debug("Loading esbuild's WASM Module");
+    const wasmModule = new WebAssembly.Module(
+      await fetch('./generated/esbuild.wasm')
+        .catch((e) => {
+          console.error('Failed to fetch() the esbuild wasm file.');
+          throw e;
+        })
+        .then((v) => v.arrayBuffer())
+    );
+    console.debug('Attempting to initialize esbuild-wasm');
+    try {
+      await initialize({
+        wasmModule,
+        worker: false,
+      });
+    } catch (error) {
+      console.error(error);
+      throw new Error('Failed to initialize esbuild - see above error');
+    }
+    console.debug('Transforming Content');
+    const built = await transform(sc, {
+      loader: 'ts',
+    });
+    console.debug('Got result', built);
+    const b = browser;
+    const brow: UserlandBrowser = {
+      get webRequest() {
+        return b.webRequest;
+      },
+    };
+    const f = new Function(
+      'browser',
+      built.code.includes('await')
+        ? `return (async()=>{${built.code}
+})();`
+        : built.code
+    );
+    console.debug('Environment Information:', {
+      func: f,
+      browser: brow,
+      realBrowser: b,
+    });
+    (globalThis as any).browser = brow;
+    console.debug('Evaluating...');
+    await f(brow);
+    console.debug('Function Exited');
+  }
+}, 0);