feat: upgrade to react@17

Author: ntnyq

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+  "typescript.tsdk": "node_modules/typescript/lib"
+}

package.json

@@ -53,40 +53,40 @@
     "root": true
   },
   "dependencies": {
-    "gatsby": "^2.24.85",
-    "gatsby-image": "^2.4.21",
-    "gatsby-plugin-google-analytics": "^2.3.19",
+    "gatsby": "^2.28.0",
+    "gatsby-image": "^2.7.0",
+    "gatsby-plugin-google-analytics": "^2.7.0",
     "gatsby-plugin-graphql-codegen": "^2.7.1",
-    "gatsby-plugin-manifest": "^2.4.35",
-    "gatsby-plugin-offline": "^3.2.37",
-    "gatsby-plugin-react-helmet": "^3.3.14",
-    "gatsby-plugin-sharp": "^2.6.43",
-    "gatsby-plugin-styled-components": "^3.3.14",
-    "gatsby-plugin-typescript": "^2.4.24",
-    "gatsby-source-filesystem": "^2.3.35",
-    "gatsby-transformer-json": "^2.4.15",
-    "gatsby-transformer-sharp": "^2.5.19",
+    "gatsby-plugin-manifest": "^2.8.0",
+    "gatsby-plugin-offline": "^3.6.0",
+    "gatsby-plugin-react-helmet": "^3.6.0",
+    "gatsby-plugin-sharp": "^2.10.0",
+    "gatsby-plugin-styled-components": "^3.6.0",
+    "gatsby-plugin-typescript": "^2.8.0",
+    "gatsby-source-filesystem": "^2.7.0",
+    "gatsby-transformer-json": "^2.7.0",
+    "gatsby-transformer-sharp": "^2.8.0",
     "prop-types": "^15.7.2",
-    "react": "^16.12.0",
-    "react-dom": "^16.12.0",
+    "react": "^17.0.1",
+    "react-dom": "^17.0.1",
     "react-helmet": "^6.1.0",
-    "styled-components": "^5.2.0",
-    "styled-reset": "^4.2.3"
+    "styled-components": "^5.2.1",
+    "styled-reset": "^4.3.1"
   },
   "devDependencies": {
-    "@ntnyq/eslint-config-prettier-typescript-react": "^0.1.9",
-    "@ntnyq/prettier-config": "^0.1.0",
-    "@types/react": "^16.9.53",
-    "@types/react-dom": "^16.9.8",
+    "@ntnyq/eslint-config-prettier-typescript-react": "^0.1.11",
+    "@ntnyq/prettier-config": "^0.2.0",
+    "@types/react": "^17.0.0",
+    "@types/react-dom": "^17.0.0",
     "@types/react-helmet": "^6.0.0",
     "@types/scrollreveal": "^0.0.6",
     "@types/styled-components": "^5.1.4",
     "dotenv": "^8.2.0",
-    "eslint": "^7.12.0",
+    "eslint": "^7.14.0",
     "husky": "^4.3.0",
-    "lint-staged": "^10.4.2",
-    "prettier": "^2.1.2",
-    "sort-package-json": "^1.46.1",
-    "typescript": "^4.0.3"
+    "lint-staged": "^10.5.2",
+    "prettier": "^2.2.1",
+    "sort-package-json": "^1.48.0",
+    "typescript": "^4.1.2"
   }
 }

tsconfig.json

@@ -3,7 +3,7 @@
     "baseUrl": ".",
     "outDir": "./dist",
     "declaration": false,
-    "jsx": "react",
+    "jsx": "react-jsx",
     "lib": [
       "ESNEXT",
       "DOM",