From b7f794ffa61c288ec132b57ede055f49c503c3a7 Mon Sep 17 00:00:00 2001
From: Sven Slootweg <admin@cryto.net>
Date: Sun, 14 Jul 2019 17:59:12 +0200
Subject: [PATCH] Added ESLint for error detection

---
 .eslintrc.js | 78 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 package.json |  2 ++
 2 files changed, 80 insertions(+)
 create mode 100644 .eslintrc.js

diff --git a/.eslintrc.js b/.eslintrc.js
new file mode 100644
index 0000000..fe21cf8
--- /dev/null
+++ b/.eslintrc.js
@@ -0,0 +1,78 @@
+module.exports = {
+    "env": {
+        "browser": true,
+        "commonjs": true,
+        "es6": true,
+        "node": true
+    },
+    "parserOptions": {
+        "ecmaFeatures": {
+            "experimentalObjectRestSpread": true,
+            "jsx": true
+        }
+    },
+    "plugins": [
+        "react"
+    ],
+    "rules": {
+        /* Things that should effectively be syntax errors. */
+        "indent": [ "error", "tab", {
+            SwitchCase: 1
+        }],
+        "linebreak-style": [ "error", "unix" ],
+        "semi": [ "error", "always" ],
+        /* Things that are always mistakes. */
+        "getter-return": [ "error" ],
+        "no-compare-neg-zero": [ "error" ],
+        "no-dupe-args": [ "error" ],
+        "no-dupe-keys": [ "error" ],
+        "no-duplicate-case": [ "error" ],
+        "no-empty": [ "error" ],
+        "no-empty-character-class": [ "error" ],
+        "no-ex-assign": [ "error" ],
+        "no-extra-semi": [ "error" ],
+        "no-func-assign": [ "error" ],
+        "no-invalid-regexp": [ "error" ],
+        "no-irregular-whitespace": [ "error" ],
+        "no-obj-calls": [ "error" ],
+        "no-sparse-arrays": [ "error" ],
+        "no-undef": [ "error" ],
+        "no-unreachable": [ "error" ],
+        "no-unsafe-finally": [ "error" ],
+        "use-isnan": [ "error" ],
+        "valid-typeof": [ "error" ],
+        "curly": [ "error" ],
+        "no-caller": [ "error" ],
+        "no-fallthrough": [ "error" ],
+        "no-extra-bind": [ "error" ],
+        "no-extra-label": [ "error" ],
+        "array-callback-return": [ "error" ],
+        "prefer-promise-reject-errors": [ "error" ],
+        "no-with": [ "error" ],
+        "no-useless-concat": [ "error" ],
+        "no-unused-labels": [ "error" ],
+        "no-unused-expressions": [ "error" ],
+        "no-unused-vars": [ "error" , { argsIgnorePattern: "^_" } ],
+        "no-return-assign": [ "error" ],
+        "no-self-assign": [ "error" ],
+        "no-new-wrappers": [ "error" ],
+        "no-redeclare": [ "error" ],
+        "no-loop-func": [ "error" ],
+        "no-implicit-globals": [ "error" ],
+        "strict": [ "error", "global" ],
+        /* Make JSX not cause 'unused variable' errors. */
+        "react/jsx-uses-react": ["error"],
+        "react/jsx-uses-vars": ["error"],
+        /* Development code that should be removed before deployment. */
+        "no-console": [ "warn" ],
+        "no-constant-condition": [ "warn" ],
+        "no-debugger": [ "warn" ],
+        "no-alert": [ "warn" ],
+        "no-warning-comments": ["warn", {
+            terms: ["fixme"]
+        }],
+        /* Common mistakes that can *occasionally* be intentional. */
+        "no-template-curly-in-string": ["warn"],
+        "no-unsafe-negation": [ "warn" ],
+    }
+};
diff --git a/package.json b/package.json
index e0a8fbe..15ff907 100644
--- a/package.json
+++ b/package.json
@@ -45,6 +45,8 @@
     "webpack": "^4.27.1"
   },
   "devDependencies": {
+    "eslint": "^6.0.1",
+    "eslint-plugin-react": "^7.14.2",
     "gulp-watch": "^5.0.1",
     "livereactload": "^4.0.0-beta.2",
     "mocha": "^6.1.4"