support(build): Put typings in typings/

Since now there is have more than one generated then the build produces
more than one `.d.ts` file. Before this commit `index.d.ts` would be put
in the root but with more than one file that is not good. So `.d.ts`
files now are placed on `typings/`.

.gitignore

@@ -1,4 +1,4 @@
 node_modules/
 dist/
 coverage/
-index.d.ts
+typings/

package.json

@@ -6,7 +6,7 @@
   "module": "./dist/cmjs/index.js",
   "es2015": "./dist/es2015/index.js",
   "unpkg": "./dist/umd/index.js",
-  "typings": "./index.d.ts",
+  "typings": "./typings/index.d.ts",
   "sideEffects": false,
   "repository": {
     "type": "git",
@@ -15,7 +15,7 @@
   "author": "Christian Gill <gillchristiang@gmail.com>",
   "license": "MIT",
   "scripts": {
-    "build": "yarn build:es2015 && yarn build:umd && yarn build:cmjs",
+    "build": "yarn build:umd && yarn build:cmjs && yarn build:es2015 ",
     "build:es2015": "tsc --module es2015 --outDir dist/es2015",
     "build:umd": "tsc --module umd --outDir dist/umd",
     "build:cmjs": "tsc --module commonjs --outDir dist/cmjs",

tsconfig.json

@@ -4,7 +4,7 @@
     "moduleResolution": "node",
     "esModuleInterop": true,
     "declaration": true,
-    "declarationDir": "./",
+    "declarationDir": "typings",
     "rootDir": "src",
     "allowJs": false,
     "skipLibCheck": true,
@@ -18,5 +18,5 @@
     "noUnusedLocals": false
   },
   "include": ["src/*.ts", "!src/*.spec.ts"],
-  "exclude": ["node_modules", "dist", "index.d.ts", "src/index.spec.ts"]
+  "exclude": ["node_modules", "dist", "typings", "src/index.spec.ts"]
 }