Add editor and eslint configs

.editorconfig

@@ -0,0 +1,9 @@
+root = true
+
+[*]
+indent_style = tab
+indent_size = 4
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true

.eslintrc.json

@@ -0,0 +1,86 @@
+{
+	"env": {
+		"browser": false,
+		"node": true,
+		"es6": true
+	},
+	"extends": "airbnb-base",
+	"parserOptions": {
+		"sourceType": "module",
+		"ecmaVersion": 8
+	},
+	"plugins": [
+		"import"
+	],
+	"rules": {
+		"indent": ["error", "tab", {
+			"FunctionDeclaration": {
+				"parameters": 2,
+				"body": 1
+			},
+			"FunctionExpression": {
+				"parameters": 2,
+				"body": 1
+			},
+			"VariableDeclarator": 2,
+			"CallExpression": {
+				"arguments": 2
+			},
+			"MemberExpression": "off",
+			"ImportDeclaration": "first"
+		}],
+		"object-curly-newline": ["error", {
+			"minProperties": 5,
+			"consistent": true
+		}],
+		"one-var": ["error", {
+			"initialized": "never",
+			"uninitialized": "always"
+		}],
+		"one-var-declaration-per-line": ["error", "initializations"],
+		"quotes": ["error", "double"],
+		"semi": ["error", "never"],
+		"comma-dangle": ["error", "always-multiline"],
+		"max-len": ["warn", 80],
+		"camelcase": ["error", {"properties": "always"}],
+		"space-before-function-paren": ["error", "never"],
+		"func-style": ["warn", "declaration", {"allowArrowFunctions": true}],
+		"id-length": ["warn", {"max": 25, "exceptions": ["i", "x", "y", "$"]}],
+		"import/no-nodejs-modules": "error",
+		"import/order": ["warn", {
+			"groups": ["builtin", "external", "internal", "parent", "sibling",
+				"index"],
+			"newlines-between": "never"
+		}],
+		"arrow-body-style": ["error", "as-needed"],
+		"complexity": ["warn", 11],
+		"new-cap": ["warn", {
+			"newIsCap": true,
+			"capIsNew": true
+		}],
+		"no-empty": ["error", {
+			"allowEmptyCatch": true
+		}],
+
+		"function-paren-newline": "off",
+		"no-labels": "off",
+		"no-control-regex": "off",
+		"no-void": "off",
+		"func-names": "off",
+		"no-continue": "off",
+		"default-case": "off",
+		"no-plusplus": "off",
+		"no-use-before-define": "off",
+		"no-restricted-syntax": "off",
+		"no-return-assign": "off",
+		"no-param-reassign": "off",
+		"arrow-parens": "off",
+		"no-nested-ternary": "off",
+		"no-new": "off",
+		"no-tabs": "off",
+		"no-prototype-builtins": "off",
+		"no-console": "off",
+		"class-methods-use-this": "off",
+		"prefer-destructuring": "off"
+	}
+}

package.json

@@ -1,16 +1,22 @@
 {
-  "name": "mautrix-telegram",
+	"name": "mautrix-telegram",
-  "version": "0.1.0",
+	"version": "0.1.0",
-  "description": "A Matrix-Telegram puppeting bridge",
+	"description": "A Matrix-Telegram puppeting bridge",
-  "author": "Tulir Asokan <tulir@maunium.net>",
+	"author": "Tulir Asokan <tulir@maunium.net>",
-  "license": "GPL-3.0",
+	"license": "GPL-3.0",
-  "repository": {
+	"main": "index.js",
-    "type": "git",
+	"repository": {
-    "url": "https://github.com/tulir/mautrix-telegram.git"
+		"type": "git",
-  },
+		"url": "https://github.com/tulir/mautrix-telegram.git"
-  "dependencies": {
+	},
-    "telegram-mtproto": "2.x.x",
+	"dependencies": {
-    "matrix-js-sdk": "0.x.x",
+		"telegram-mtproto": "2.x.x",
-    "matrix-appservice-bridge": "1.x.x"
+		"matrix-js-sdk": "0.x.x",
-  }
+		"matrix-appservice-bridge": "1.x.x"
+	},
+	"devDependencies": {
+		"eslint": "4.11.x",
+		"eslint-config-airbnb-base": "12.1.x",
+		"eslint-plugin-import": "2.8.x"
+	}
 }