Service workers fixed (I think)

packages/plugos/compile.ts

@@ -0,0 +1,51 @@
+import esbuild from "esbuild";
+import { readFile, unlink, writeFile } from "fs/promises";
+import path from "path";
+
+export async function compile(
+  filePath: string,
+  functionName: string = "",
+  debug: boolean = false,
+  excludeModules: string[] = [],
+  meta = false
+): Promise<string> {
+  let outFile = path.join(path.dirname(filePath), "_out.tmp");
+  let inFile = filePath;
+
+  if (functionName) {
+    // Generate a new file importing just this one function and exporting it
+    inFile = "_in.ts";
+    await writeFile(
+      inFile,
+      `import {${functionName}} from "./${filePath}";export default ${functionName};`
+    );
+  }
+
+  // TODO: Figure out how to make source maps work correctly with eval() code
+  let result = await esbuild.build({
+    entryPoints: [path.basename(inFile)],
+    bundle: true,
+    format: "iife",
+    globalName: "mod",
+    platform: "browser",
+    sourcemap: false, //sourceMap ? "inline" : false,
+    minify: !debug,
+    outfile: outFile,
+    metafile: true,
+    external: excludeModules,
+    absWorkingDir: path.resolve(path.dirname(inFile)),
+  });
+
+  if (meta) {
+    let text = await esbuild.analyzeMetafile(result.metafile);
+    console.log("Bundle info for", functionName, text);
+  }
+
+  let jsCode = (await readFile(outFile)).toString();
+  await unlink(outFile);
+  if (inFile !== filePath) {
+    await unlink(inFile);
+  }
+  return `(() => { ${jsCode}
+    return mod;})()`;
+}