refactor: simplify tsc compilation to one tsconfig

package.json

@@ -19,7 +19,7 @@
   "scripts": {
     "cleanup": "shx rm -rf umd lib lib-esm typings coverage",
     "prebuild": "npm run cleanup && npm run verify",
-    "build": " tsc && tsc -p tsconfig.es6.json && webpack",
+    "build": " tsc && tsc --module es2015 --target es2015 --outDir lib-esm && webpack",
     "test": "jest",
     "test:watch": "jest --watch",
     "test:coverage": "jest --coverage",

tsconfig.json

@@ -1,7 +1,32 @@
 {
-  "extends": "./tsconfig.base.json",
   "compilerOptions": {
+    "moduleResolution": "node",
+    "module": "commonjs",
+    "target": "es5",
+    "lib": [
+      "es2015",
+      "dom"
+    ],
+    "noUnusedLocals": true,
+    "strictNullChecks": true,
+    "noImplicitAny": true,
+    "noImplicitThis": true,
+    "allowSyntheticDefaultImports": true,
+    "suppressImplicitAnyIndexErrors": true,
+    "forceConsistentCasingInFileNames": true,
+    "pretty": true,
+    "jsx": "react",
+    "sourceMap": true,
+    "outDir": "lib",
     "declaration": true,
     "declarationDir": "typings"
-  }
+  },
+  "include": [
+    "./src"
+  ],
+  "exclude": [
+    "node_modules"
+  ],
+  "compileOnSave": false,
+  "buildOnSave": false
 }