feat: initial dev-configs monorepo

Shared configs for TypeScript projects: ESLint, Prettier, TypeScript,
Vite, Jest, Playwright, Knip. Published as @vigdorov/* npm packages
to Gitea registry.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/vite/package.json

@@ -0,0 +1,27 @@
+{
+    "name": "@vigdorov/vite-config",
+    "version": "1.0.0",
+    "description": "Shared Vite configuration",
+    "type": "module",
+    "main": "dist/index.js",
+    "types": "dist/index.d.ts",
+    "files": ["dist"],
+    "exports": {
+        ".": "./dist/index.js",
+        "./spa": "./dist/spa.js",
+        "./library": "./dist/library.js"
+    },
+    "scripts": {
+        "build": "tsc"
+    },
+    "peerDependencies": {
+        "vite": ">=6.0.0"
+    },
+    "dependencies": {
+        "@vitejs/plugin-react": "^4.5.2"
+    },
+    "devDependencies": {
+        "vite": "^6.3.5",
+        "typescript": "^5.8.3"
+    }
+}

packages/vite/src/index.ts

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+export {spa, type SpaOptions} from './spa.js';
+export {library, type LibraryOptions} from './library.js';

packages/vite/src/library.ts

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+import {defineConfig, type UserConfig} from 'vite';
+import {resolveAliases} from './utils.js';
+
+export interface LibraryOptions {
+    entry: string;
+    name: string;
+    aliases?: Record<string, string>;
+    external?: string[];
+    formats?: ('es' | 'cjs')[];
+}
+
+export function library(options: LibraryOptions): UserConfig {
+    const {entry, name, aliases, external = [], formats = ['es', 'cjs']} = options;
+
+    return defineConfig({
+        resolve: {
+            alias: resolveAliases(aliases),
+        },
+        build: {
+            lib: {
+                entry,
+                name,
+                formats,
+                fileName: (format) => `index.${format === 'es' ? 'mjs' : 'cjs'}`,
+            },
+            rollupOptions: {
+                external,
+            },
+        },
+    });
+}

packages/vite/src/spa.ts

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+import react from '@vitejs/plugin-react';
+import {defineConfig, type UserConfig} from 'vite';
+import {resolveAliases} from './utils.js';
+
+export interface SpaOptions {
+    port?: number;
+    aliases?: Record<string, string>;
+    proxy?: Record<string, string>;
+    base?: string;
+    outDir?: string;
+}
+
+export function spa(options: SpaOptions = {}): UserConfig {
+    const {port = 5173, aliases, proxy, base = '/', outDir = 'dist'} = options;
+
+    return defineConfig({
+        plugins: [react()],
+        base,
+        resolve: {
+            alias: resolveAliases(aliases),
+        },
+        server: {
+            port,
+            proxy,
+        },
+        build: {
+            outDir,
+        },
+    });
+}

packages/vite/src/utils.ts

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+import path from 'node:path';
+
+export function resolveAliases(aliases: Record<string, string> | undefined): Record<string, string> {
+    if (!aliases) return {};
+
+    return Object.fromEntries(
+        Object.entries(aliases).map(([key, value]) => [key, path.resolve(process.cwd(), value)]),
+    );
+}

packages/vite/tsconfig.json

@@ -0,0 +1,8 @@
+{
+    "extends": "../../tsconfig.base.json",
+    "compilerOptions": {
+        "outDir": "dist",
+        "rootDir": "src"
+    },
+    "include": ["src"]
+}