add eslint

Author: phil294

server/package.json

@@ -34,8 +34,11 @@
     "@types/lodash": "^4.14.170",
     "@types/node": "^15.12.4",
     "@types/resolve": "1.20.0",
+    "@typescript-eslint/eslint-plugin": "^5.9.0",
+    "@typescript-eslint/parser": "^5.9.0",
     "coffeescript": "^2.5.1",
     "core-js": "^3.15.1",
+    "eslint": "^8.6.0",
     "fast-glob": "^3.2.5",
     "lodash": "^4.17.21",
     "parse-gitignore": "^1.0.1",

server/src/services/.eslintrc.yml

@@ -0,0 +1,17 @@
+env:
+  browser: true
+  es2021: true
+  node: true
+extends:
+  - eslint:recommended
+  - plugin:@typescript-eslint/recommended
+parser: '@typescript-eslint/parser'
+parserOptions:
+  ecmaVersion: 13
+  sourceType: module
+plugins:
+  - '@typescript-eslint'
+rules:
+  '@typescript-eslint/ban-ts-comment': off
+  no-unexpected-multiline: off
+  '@typescript-eslint/no-non-null-assertion': off

server/tsconfig.json

@@ -10,7 +10,8 @@
 
     "lib": ["es2021"],
     // Most classes in LSP are asynchronously initialized
-    "strictPropertyInitialization": false
+    "strictPropertyInitialization": false,
+    "skipLibCheck": true,
   },
   "include": [
     "src"