Upgrade contract-proxy-kit and TS (#1127)

* Upgrade contract-proxy-kit and TS

* Upgrade TS tooling

* Turn off @typescript-eslint/explicit-module-boundary-types and bust eslint-loader cache

app/.eslintrc

@@ -34,6 +34,7 @@
   "rules": {
     "prettier/prettier": "error",
     "@typescript-eslint/explicit-function-return-type": "off",
+    "@typescript-eslint/explicit-module-boundary-types": "off",
     "@typescript-eslint/no-explicit-any": "off",
     "react/prop-types": "off",
     "no-console": [

app/package.json

@@ -49,7 +49,7 @@
     "big.js": "^5.2.2",
     "circular-dependency-plugin": "^5.2.0",
     "common-tags": "^1.8.0",
-    "contract-proxy-kit": "^2.0.0-alpha.3",
+    "contract-proxy-kit": "^2.0.1",
     "disqus-react": "^1.0.8",
     "eslint-config-react-app": "^5.2.1",
     "ethers": "^4.0.36",
@@ -74,22 +74,22 @@
     "react-redux": "^7.1.3",
     "react-router": "^5.1.2",
     "react-router-dom": "^5.1.2",
-    "react-scripts": "^3.4.1",
+    "react-scripts": "^4.0.0-next.98",
     "react-share": "3.0.1",
     "react-tooltip": "^3.11.1",
     "recharts": "^1.8.5",
     "sanitize.css": "^11.0.0",
     "styled-components": "^4.3.2",
     "subscriptions-transport-ws": "^0.9.16",
-    "typescript": "3.6.2",
+    "typescript": "^4.0.3",
     "use-debounce": "^3.1.0",
     "use-local-storage-state": "^2.0.0",
     "web3-react": "^5.0.4"
   },
   "scripts": {
     "start": "npx react-scripts start",
     "test": "npx react-scripts test",
-    "build": "rm -rif build && node --max-old-space-size=4000 scripts/build.js",
+    "build": "rm -rf ./node_modules/.cache/eslint-loader && yarn react-scripts --max-old-space-size=4096 build",
     "eject": "npx react-scripts eject",
     "format:staged": "lint-staged",
     "ipfs-deploy": "ipfs-deploy build --pinner pinata --no-open --no-clipboard",
@@ -127,9 +127,9 @@
   "devDependencies": {
     "@testing-library/jest-dom": "^4.2.4",
     "@testing-library/react": "^9.3.2",
-    "@typescript-eslint/eslint-plugin": "^2.1.0",
-    "@typescript-eslint/parser": "^2.1.0",
-    "eslint": "^6.8.0",
+    "@typescript-eslint/eslint-plugin": "^4.2.0",
+    "@typescript-eslint/parser": "^4.2.0",
+    "eslint": "^7.9.0",
     "eslint-config-prettier": "^6.10.0",
     "eslint-plugin-import": "2.20.0",
     "eslint-plugin-jsx-a11y": "^6.2.3",