feat: add typescript project settings

This enables strongly typed checking within the current project. Consumers of this repo
will need to be sure they pass languageOptions.parserOptions.project, which points
to their tsconfig file to enable type checking rules.

Author: leviFrosty

README.md

@@ -61,17 +61,27 @@ with TypeScript:
 
 ```js
 const config = require('@silvermine/eslint-config'),
-      node = require('@silvermine/eslint-config/partials/node');
+      node = require('@silvermine/eslint-config/partials/node'),
+      typescript = require('@silvermine/eslint-config/partials/typescript');
 
 module.exports = [
    ...config,
    {
       files: [ '**/*.ts' ],
-      ...node
-   }
+      ...typescript,
+      languageOptions: {
+         parserOptions: {
+            project: 'tsconfig.node.json',
+         },
+      },
+      ...node,
+   },
 ];
 ```
 
+Notice that we must specify the `project` property within `languageOptions.parserOptions`
+to enable TypeScript strongly typed linting.
+
 Below is how you would configure a browser library that uses only vanilla JS:
 
 ```js
@@ -108,7 +118,26 @@ module.exports = [
 
 ### Vue Support
 
-Our default configuration supports Vue 3 by default.
+Below is an example of using Vue 3 with TypeScript:
+
+```js
+const config = require('@silvermine/eslint-config'),
+      vue = require('@silvermine/eslint-config/partials/vue');
+
+module.exports = [
+   ...config,
+   {
+      files: [ '**/*.vue' ],
+      ...vue,
+      languageOptions: {
+         parserOptions: {
+            project: 'tsconfig.web.json',
+         },
+      },
+   },
+];
+```
+
 
 For legacy Vue.js 2.x projects, a Vue 2-specific configuration is available.
 In this situation your project would be configured like so:

env.d.ts

@@ -0,0 +1,9 @@
+/* eslint-disable @typescript-eslint/triple-slash-reference */
+/// <reference types="vite/client" />
+
+declare module '*.vue' {
+   import { DefineComponent } from 'vue';
+   const component: DefineComponent<object, object, unknown>;
+
+   export default component;
+}

eslint.config.js

@@ -5,6 +5,14 @@ const config = require('./index'),
 
 module.exports = [
    ...config,
+   {
+      files: [ '**/*.ts' ],
+      languageOptions: {
+         parserOptions: {
+            project: [ './tsconfig.node.json' ],
+         },
+      },
+   },
    {
       ...node,
    },

index.js

@@ -29,6 +29,13 @@ module.exports = [
    {
       files: [ '**/*.ts' ],
       ...typescript,
+      languageOptions: {
+         ...typescript.languageOptions,
+         parserOptions: {
+            ...typescript.languageOptions.parserOptions,
+            project: [ './tsconfig.node.json' ],
+         },
+      },
    },
    {
       files: [ '**/*.js', '**/*.cjs' ],
@@ -47,5 +54,13 @@ module.exports = [
          ...vueBaseRules,
          ...vue3rules,
       },
+      languageOptions: {
+         ...vueConfig.languageOptions,
+         parserOptions: {
+            ...vueConfig.languageOptions.parserOptions,
+            project: [ './tsconfig.web.json' ],
+            extraFileExtensions: [ '.vue' ],
+         },
+      },
    },
 ];