Lint tweaks (#502)

* lint json files & add lint ignore list

* lint against plain console logs

* Update .lintstagedrc.js

Co-Authored-By: Lipis <lipiridis@gmail.com>

* format .tsconfig

* don't lint against console.info

* change log to console.info

Co-authored-by: Lipis <lipiridis@gmail.com>

package.json

@@ -24,15 +24,34 @@
     "@types/react": "16.9.17",
     "@types/react-color": "3.0.1",
     "@types/react-dom": "16.9.4",
+    "eslint-plugin-json-format": "2.0.1",
     "husky": "4.0.10",
     "lint-staged": "10.0.0",
     "node-sass": "4.13.1",
     "prettier": "1.19.1",
-    "rewire": "^4.0.1",
+    "rewire": "4.0.1",
     "typescript": "3.7.5"
   },
   "eslintConfig": {
-    "extends": "react-app"
+    "extends": "react-app",
+    "plugins": [
+      "json-format"
+    ],
+    "settings": {
+      "json/sort-package-json": false
+    },
+    "rules": {
+      "no-console": [
+        "warn",
+        {
+          "allow": [
+            "warn",
+            "error",
+            "info"
+          ]
+        }
+      ]
+    }
   },
   "homepage": "https://excalidraw.com",
   "husky": {
@@ -40,15 +59,6 @@
       "pre-commit": "lint-staged"
     }
   },
-  "lint-staged": {
-    "*.{js,css,scss,json,md,ts,tsx,html,yml}": [
-      "prettier --write",
-      "git add"
-    ],
-    "*.{js,ts,tsx}": [
-      "eslint --max-warnings 0"
-    ]
-  },
   "main": "src/index.js",
   "name": "excalidraw",
   "scripts": {
@@ -56,7 +66,7 @@
     "build-node": "./scripts/build-node.js",
     "eject": "react-scripts eject",
     "fix": "npm run prettier -- --write",
-    "prettier": "prettier \"**/*.{js,css,scss,json,md,ts,tsx,html,yml}\"",
+    "prettier": "prettier \"**/*.{js,css,scss,json,md,ts,tsx,html,yml}\" --ignore-path=.eslintignore",
     "start": "react-scripts start",
     "test": "npm run test:app",
     "test:app": "react-scripts test --env=jsdom --passWithNoTests",