tweak rts, add test

README.md

@@ -38,6 +38,10 @@ Make sure you have the following installed:
 Run `make tests/{folder}/{number}.wasm` to compile to `main.wasm` in the `server/` folder, which can then be run
 from the frontend.
 
+## Errors
+
+
+
 ## Target Language: WebAssembly
 
 We need to write to `.wat` which is the WebAssembly Text format. From there we can use wat2wasm to turn that into the actual assembly code which can run in the browser.

program.wkt

@@ -1,3 +1,2 @@
 #lang wacket
-(define (doubler x) (+ x x))
-((lambda (y) (doubler y)) 21)
+(integer->char 97)

server/public/runtime.js

@@ -37,7 +37,7 @@ const importObject = { io:  {read: readByte, write: writeByte, peek: peekByte},
                        err: {error: error}};
 
 function error() {
-  output.innerHTML = output.innerHTML + "\n-----------------\n| RUNTIME ERROR |\n-----------------"
+  output.innerHTML = output.innerHTML + "RUNTIME ERROR"
   throw "Runtime Error"
 }
 

tests/hustle/9.wkt

@@ -0,0 +1,2 @@
+#lang wacket
+(car 8)