Set up for npm packaging

.gitignore

@@ -1,3 +1,4 @@
 node_modules
 coverage
-.husky
+.husky/
+dist

package.json

@@ -2,11 +2,16 @@
   "name": "hopp-js-sandbox",
   "version": "0.1.0",
   "description": "",
+  "main": "./dist/index.js",
+  "types": "./dist/index.d.ts",
   "scripts": {
     "demo": "esrun src/index.ts",
     "lint": "eslint --ext .ts,.js --ignore-path .gitignore",
     "prepare": "husky install",
-    "test": "npx jest"
+    "test": "npx jest",
+    "build": "npx tsc",
+    "clean": "npx tsc --build --clean",
+    "prepublish": "npm run build"
   },
   "keywords": [],
   "author": "",

tsconfig.json

@@ -1,23 +1,24 @@
 {
   "compilerOptions": {
-    "target": "ES2018",
+    "target": "ES6",
     "module": "ESNext",
     "moduleResolution": "Node",
     "lib": ["ESNext", "ESNext.AsyncIterable", "DOM"],
     "esModuleInterop": true,
-    "allowJs": true,
-    "sourceMap": true,
     "strict": true,
-    "noEmit": true,
-    "baseUrl": ".",
+    "baseUrl": "./src",
     "paths": {
-      "~/*": ["./*"],
-      "@/*": ["./*"]
+      "~/*": ["./src/*"],
+      "@/*": ["./src/*"]
     },
     "types": [
       "@types/node",
       "@types/jest"
-    ]
+    ],
+    "outDir": "./dist/",
+    "rootDir": "./src/",
+    "declaration": true,
   },
-  "exclude": ["node_modules"]
+  "include": ["./src"],
+  "exclude": ["node_modules", "./src/__tests__"]
 }