Add jsdoc to package json and test/build tasks

.jsdoc.json

@@ -0,0 +1,20 @@
+{
+    "plugins": ["plugins/markdown"],
+    "templates": {
+        "default": {
+            "includeDate": false,
+            "outputSourceFiles": false
+        }
+    },
+    "source": {
+        "include": ["src"]
+    },
+    "opts": {
+        "destination": "playground/docs",
+        "pedantic": true,
+        "private": true,
+        "readme": "README.md",
+        "recurse": true,
+        "template": "node_modules/docdash"
+    }
+}

package.json

@@ -12,9 +12,10 @@
   "main": "./dist/node/scratch-vm.js",
   "browser": "./src/index.js",
   "scripts": {
-    "build": "webpack --progress --colors --bail",
+    "build": "npm run docs && webpack --progress --colors --bail",
     "coverage": "tap ./test/{unit,integration}/*.js --coverage --coverage-report=lcov",
     "deploy": "touch playground/.nojekyll && gh-pages -t -d playground -m \"Build for $(git log --pretty=format:%H -n1)\"",
+    "docs": "jsdoc -c .jsdoc.json",
     "extract:core": "mkdirp translations/core && format-message extract --out-file translations/core/en.json src/extensions/**/index.js",
     "i18n:src": "npm run extract:core",
     "lint": "eslint . && format-message lint src/**/*.js",
@@ -23,7 +24,7 @@
     "tap": "tap ./test/{unit,integration}/*.js",
     "tap:unit": "tap ./test/unit/*.js",
     "tap:integration": "tap ./test/integration/*.js",
-    "test": "npm run lint && npm run tap",
+    "test": "npm run lint && npm run docs && npm run tap",
     "watch": "webpack --progress --colors --watch",
     "version": "json -f package.json -I -e \"this.repository.sha = '$(git log -n1 --pretty=format:%H)'\""
   },
@@ -54,13 +55,15 @@
     "babel-loader": "^7.0.0",
     "babel-preset-env": "^1.6.1",
     "copy-webpack-plugin": "^4.5.1",
+    "docdash": "^0.4.0",
     "eslint": "^5.0.1",
     "eslint-config-scratch": "^5.0.0",
     "expose-loader": "0.7.5",
     "file-loader": "^1.1.6",
     "format-message-cli": "5.2.1",
     "gh-pages": "^1.1.0",
     "in-publish": "^2.0.0",
+    "jsdoc": "^3.5.5",
     "json": "^9.0.4",
     "lodash.defaultsdeep": "4.6.0",
     "pngjs": "^3.3.2",