use tsc for type checking

3 files changed, 9 insertions, 3 deletions

diff --git a/Makefile b/Makefile
index 5cd8b9c15..6ccc4781d 100644
--- a/Makefile
+++ b/Makefile
@@ -14,6 +14,7 @@ msg.pb.d.ts: msg.pb.js node_modules
 	./node_modules/.bin/pbts -o msg.pb.d.ts msg.pb.js
 
 dist/main.js: main.ts msg.pb.js msg.pb.d.ts node_modules
+	./node_modules/.bin/tsc --noEmit # Only for type checking.
 	./node_modules/.bin/parcel build --out-dir=dist/ --no-minify main.ts
 
 node_modules:
diff --git a/main.ts b/main.ts
index 9071c2fcd..44519489a 100644
--- a/main.ts
+++ b/main.ts
@@ -1,9 +1,8 @@
-import * as ts from "typescript";
+//import * as ts from "typescript";
 import { main as pb } from "./msg.pb"
 
-V8Worker2.recv((ab: ArrayBuffer) {
+V8Worker2.recv((ab: ArrayBuffer) => {
   let msg = pb.Msg.decode(new Uint8Array(ab));
-  V8Worker2.print("Got array buffer", ab.byteLength);
   V8Worker2.print("msg.argv", msg.argv);
 });
 
diff --git a/v8worker2.d.ts b/v8worker2.d.ts
new file mode 100644
index 000000000..9ace56ff7
--- /dev/null
+++ b/v8worker2.d.ts
@@ -0,0 +1,6 @@
+declare namespace V8Worker2 {
+  function print(...args: any[]): void;
+  type RecvCallback = (ab: ArrayBuffer) => void;
+  function recv(cb: RecvCallback): void;
+  function send(ab: ArrayBuffer): null | ArrayBuffer;
+}