Switch to ESLint (#555)

* Initial migration to ESLint

* Recommend ESLint instead of TSLint

* Fix prefer-const

* Fix no-useless-escape

* Fix restrict-template-expressions

* Fix no-floating-promises

* Fix no-unsafe-enum-comparison

* Fix ban-types

* Fix no-unused-vars

* Fix no-array-constructor, no-var

* Fix require-await

* Fix no-misused-promises

* Fix no-unbound-method

* Fix no-namespace

* Lint telemetryHelper

* Lint graphHelper

* Delete unused OperationsClient

* Lint ServiceConnection*

* Lint configure

* Another round of lint configuration

* Lint restClient

* Ignore parseError

* Lint in CI

* Make it stricter

* Better fix for schemaContributor

* Add a missing progress notification

* Ignore tools for CI, I guess

.azure-pipelines/common-steps.yml

@@ -26,6 +26,9 @@ steps:
   env:
     DISPLAY: ':99.0'
 
+- script: npm run lint
+  displayName: Lint
+
 # Acquire the `vsce` tool and use it to package
 - script: |
     npm install -g vsce

.eslintignore

@@ -0,0 +1,4 @@
+dist
+node_modules
+out
+tools

.eslintrc.js

@@ -0,0 +1,24 @@
+/* eslint-env node */
+module.exports = {
+    extends: [
+        'eslint:recommended',
+    ],
+    env: {
+        node: true
+    },
+    parserOptions: {
+        ecmaVersion: "latest"
+    },
+    root: true,
+    overrides: [
+        {
+            extends: ['plugin:@typescript-eslint/strict-type-checked'],
+            files: ['./**/*.{ts,tsx}'],
+            parser: '@typescript-eslint/parser',
+            parserOptions: {
+                project: true,
+            },
+            plugins: ['@typescript-eslint'],
+        },
+    ],
+};

.vscode/extensions.json

@@ -2,6 +2,6 @@
 	// See http://go.microsoft.com/fwlink/?LinkId=827846
 	// for the documentation about the extensions.json format
 	"recommendations": [
-		"ms-vscode.vscode-typescript-tslint-plugin"
+		"dbaeumer.vscode-eslint"
 	]
-}
+}