add tsc --noEmit to linting command in jspsych package

Author: joshunrau

packages/jspsych/package.json

@@ -28,7 +28,7 @@
  "build": "run-p build:js build:styles",
  "build:watch": "run-p \"build:js -- --watch\" \"build:styles watch\"",
  "prepack": "cp ../../README.md .",
- "lint": "eslint src"
+ "lint": "tsc --noEmit && eslint src"
  },
  "repository": {
  "type": "git",