move to eslint+prettier

Author: tobidelius

.prettierrc.json

@@ -0,0 +1,6 @@
+{
+  "trailingComma": "all",
+  "tabWidth": 2,
+  "semi": false,
+  "singleQuote": true
+}

eslint.config.mjs

@@ -0,0 +1,21 @@
+// @ts-check
+
+import eslint from '@eslint/js'
+import tseslint from 'typescript-eslint'
+import prettier from 'eslint-config-prettier'
+import pluginPrettier from 'eslint-plugin-prettier'
+
+export default tseslint.config(
+  eslint.configs.recommended,
+  tseslint.configs.strict,
+  tseslint.configs.stylistic,
+  {
+    plugins: {
+      prettier: pluginPrettier,
+    },
+    rules: {
+      'prettier/prettier': 'error',
+    },
+    extends: [prettier],
+  },
+)

package.json

@@ -8,7 +8,7 @@
     "test": "vitest --run",
     "test:watch": "vitest --watch",
     "test:coverage": "vitest --coverage --watch=false",
-    "lint": "npx ts-standard",
+    "lint": "npx eslint .",
     "build": "npx tsc"
   },
   "author": "Tobias Sandelius @tobidelius",

setup

@@ -3,4 +3,9 @@ npm i -D typescript \
   @types/node \
   @vitest/coverage-v8 \
   vitest \
-  ts-standard
+  eslint \
+  @eslint/js \
+  typescript-eslint \
+  prettier \
+  eslint-plugin-prettier \
+  eslint-config-prettier

src/index.ts

@@ -1,3 +1,3 @@
-export default function sum (x: number, y: number): number {
+export default function sum(x: number, y: number): number {
   return x + y
 }

vitest.config.js

@@ -3,6 +3,6 @@ import { defineConfig } from 'vitest/config'
 export default defineConfig({
   test: {
     setupFiles: './test/setup.ts',
-    globals: true
-  }
+    globals: true,
+  },
 })