Added TypeScript support

next-env.d.ts

@@ -0,0 +1,2 @@
+/// <reference types="next" />
+/// <reference types="next/types/global" />

package-lock.json

@@ -237,6 +237,28 @@
       "resolved": "https://registry.npmjs.org/@types/json-schema/-/json-schema-7.0.6.tgz",
       "integrity": "sha512-3c+yGKvVP5Y9TYBEibGNR+kLtijnj7mYrXRg+WpFb2X9xm04g/DXYkfg4hmzJQosc9snFNUPkbYIhu+KAm6jJw=="
     },
+    "@types/node": {
+      "version": "14.14.19",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-14.14.19.tgz",
+      "integrity": "sha512-4nhBPStMK04rruRVtVc6cDqhu7S9GZai0fpXgPXrFpcPX6Xul8xnrjSdGB4KPBVYG/R5+fXWdCM8qBoiULWGPQ==",
+      "dev": true
+    },
+    "@types/prop-types": {
+      "version": "15.7.3",
+      "resolved": "https://registry.npmjs.org/@types/prop-types/-/prop-types-15.7.3.tgz",
+      "integrity": "sha512-KfRL3PuHmqQLOG+2tGpRO26Ctg+Cq1E01D2DMriKEATHgWLfeNDmq9e29Q9WIky0dQ3NPkd1mzYH8Lm936Z9qw==",
+      "dev": true
+    },
+    "@types/react": {
+      "version": "17.0.0",
+      "resolved": "https://registry.npmjs.org/@types/react/-/react-17.0.0.tgz",
+      "integrity": "sha512-aj/L7RIMsRlWML3YB6KZiXB3fV2t41+5RBGYF8z+tAKU43Px8C3cYUZsDvf1/+Bm4FK21QWBrDutu8ZJ/70qOw==",
+      "dev": true,
+      "requires": {
+        "@types/prop-types": "*",
+        "csstype": "^3.0.2"
+      }
+    },
     "@webassemblyjs/ast": {
       "version": "1.9.0",
       "resolved": "https://registry.npmjs.org/@webassemblyjs/ast/-/ast-1.9.0.tgz",
@@ -1364,6 +1386,12 @@
         }
       }
     },
+    "csstype": {
+      "version": "3.0.5",
+      "resolved": "https://registry.npmjs.org/csstype/-/csstype-3.0.5.tgz",
+      "integrity": "sha512-uVDi8LpBUKQj6sdxNaTetL6FpeCqTjOvAQuQUa/qAqq8oOd4ivkbhgnqayl0dnPal8Tb/yB1tF+gOvCBiicaiQ==",
+      "dev": true
+    },
     "cyclist": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/cyclist/-/cyclist-1.0.1.tgz",
@@ -4831,6 +4859,12 @@
       "resolved": "https://registry.npmjs.org/typedarray/-/typedarray-0.0.6.tgz",
       "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c="
     },
+    "typescript": {
+      "version": "4.1.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.1.3.tgz",
+      "integrity": "sha512-B3ZIOf1IKeH2ixgHhj6la6xdwR9QrLC5d1VKeCSY4tvkqhF2eqd9O7txNlS0PO3GrBAFIdr3L1ndNwteUbZLYg==",
+      "dev": true
+    },
     "union-value": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.1.tgz",

package.json

@@ -19,5 +19,10 @@
     "react": "17.0.1",
     "react-dom": "17.0.1",
     "sass": "^1.32.0"
+  },
+  "devDependencies": {
+    "@types/node": "^14.14.19",
+    "@types/react": "^17.0.0",
+    "typescript": "^4.1.3"
   }
 }

pages/_app.js

@@ -1,5 +0,0 @@
-import '../styles/globals.scss';
-
-export default function MyApp({ Component, pageProps }) {
-  return <Component {...pageProps} />;
-};

pages/_app.tsx

@@ -0,0 +1,7 @@
+import 'styles/globals.scss';
+
+import type { AppProps } from 'next/app';
+
+export default function MyApp({ Component, pageProps }: AppProps) {
+  return <Component {...pageProps} />;
+};

tsconfig.json

@@ -0,0 +1,30 @@
+{
+  "compilerOptions": {
+    "baseUrl": ".",
+    "target": "es5",
+    "lib": [
+      "dom",
+      "dom.iterable",
+      "esnext"
+    ],
+    "allowJs": true,
+    "skipLibCheck": true,
+    "strict": true,
+    "forceConsistentCasingInFileNames": true,
+    "noEmit": true,
+    "esModuleInterop": true,
+    "module": "esnext",
+    "moduleResolution": "node",
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "jsx": "preserve"
+  },
+  "include": [
+    "next-env.d.ts",
+    "**/*.ts",
+    "**/*.tsx"
+  ],
+  "exclude": [
+    "node_modules"
+  ]
+}