76 Add formatter for JavaScript/TypeScript files (#79)

* add lint config

* removed uitests from ts include

* run eslint commands

* strict null checks false

* removed edits to tsconfig

.eslintrc.js

@@ -0,0 +1,28 @@
+module.exports = {
+    "env": {
+        "browser": true,
+        "es2021": true
+    },
+    "extends": "standard-with-typescript",
+    "overrides": [
+        {
+            "env": {
+                "node": true
+            },
+            "files": [
+                ".eslintrc.{js,cjs}",
+                ""
+            ],
+            "parserOptions": {
+                "sourceType": "script",
+                "project": "./tsconfig.json",
+            }
+        }
+    ],
+    "parserOptions": {
+        "ecmaVersion": "latest",
+        "sourceType": "module",
+    },
+    "rules": {
+    }
+}

README.md

@@ -18,7 +18,9 @@ pip install -r requirements.dev.txt
 
 jlpm install
 ```
-Note: `pkgmt format` can be used to format and lint before committing code. 
+Note: `pkgmt format` can be used to format and lint Python files before committing code. 
+To format JavaScript and TypeScript files, use `yarn run eslint`. To lint without formatting,
+use `yarn run eslint:check`
 
 ```bash
 # Note: this command will take some time the first time as it has to install

package.json

@@ -48,7 +48,7 @@
         "clean:labextension": "rimraf jupysql_plugin/labextension jupysql_plugin/_version.py",
         "clean:all": "jlpm clean:lib && jlpm clean:labextension && jlpm clean:lintcache",
         "eslint": "jlpm eslint:check --fix",
-        "eslint:check": "eslint . --cache --ext .ts,.tsx",
+        "eslint:check": "eslint src/ --cache --ext .ts,.tsx",
         "install:extension": "jlpm build",
         "lint": "jlpm stylelint && jlpm prettier && jlpm eslint",
         "lint:check": "jlpm stylelint:check && jlpm prettier:check && jlpm eslint:check",