Adjust exec conventions

Author: avindra

bin/tsnode

@@ -9,5 +9,4 @@
 # https://github.com/TypeStrong/ts-node/issues/935#issuecomment-582673034
 #
 
-
 node --loader @k-foss/ts-esnode --experimental-specifier-resolution=node $@

package.json

@@ -12,7 +12,7 @@
     "train": "bin/tsnode src/net/train.js",
     "test-model": "node src/net/check_model.js",
     "tsc": "tsc",
-    "test": "mocha --require ts-node/register src/**/*.spec.ts"
+    "test": "bin/tsnode node_modules/mocha/bin/_mocha src/**/*.spec.ts"
   },
   "keywords": [
     "snake",

src/net/sim.ts

@@ -11,7 +11,6 @@ import {worldToVector} from './worldToVector'
 const width = 20;
 const height = 20;
 
-
 const render = (world: IWorld) => {
   const { width } = world;
   const inputVector = worldToVector(world);
@@ -23,9 +22,10 @@ const render = (world: IWorld) => {
     }
   }
 }
-const world = createWorld(width, height);
 
-const playGame = async function() {
+process.env.NODE && (async() => {
+  const world = createWorld(width, height);
+
   let alive = true;
   while (alive) {
     render(world);
@@ -35,9 +35,4 @@ const playGame = async function() {
     world.player.headed = arrowKeys[direction];
     await sleep(500);
   }
-
-};
-
-if (process.env.NODE) {
-  playGame();
-}
+})();