Switch to eslint

.eslintignore

@@ -0,0 +1,3 @@
+node_modules/*
+test/project/node_modules
+build

.eslintrc.yml

@@ -0,0 +1,21 @@
+env:
+  node: true
+parser: "@typescript-eslint/parser"
+extends:
+  - "plugin:@typescript-eslint/recommended"
+  - "prettier/@typescript-eslint"
+  - "plugin:prettier/recommended"
+parserOptions:
+  ecmaVersion: 2018
+  sourceType: module
+  project: tsconfig.json
+rules:
+  "@typescript-eslint/array-type": [error, generic]
+  "@typescript-eslint/interface-name-prefix": [error, never]
+  "@typescript-eslint/promise-function-async": warning
+  "@typescript-eslint/explicit-function-return-type": false
+overrides:
+  - files: ["src/**/*.test.ts"]
+    env:
+      node: true
+      jest: true

.vscode/settings.json

@@ -1,3 +1,14 @@
 {
-  "typescript.tsdk": "./node_modules/typescript/lib"
+  "typescript.tsdk": "./node_modules/typescript/lib",
+  "editor.formatOnSave": true,
+  "eslint.autoFixOnSave": true,
+  "prettier.eslintIntegration": true,
+  "eslint.enable": true,
+  "eslint.validate": [
+    "javascript",
+    {
+      "language": "typescript",
+      "autoFix": true
+    }
+  ]
 }