chore: add package.json, tsconfig pair, and vitest config

ESM-only, Node 20+, ships pre-compiled dist/. Peer dependency on
better-sqlite3 >=11 <13. Dev pins: typescript ^5.5, vitest ^4.0
(resolved to 4.1.6), better-sqlite3 12.6.2 (matches authd).

tsconfig.json (noEmit) is the dev/test config; tsconfig.build.json
extends it and emits .js + .d.ts to dist/. Relative imports inside src/
use .js extensions so the emitted JS resolves correctly at runtime.

package.json

@@ -0,0 +1,42 @@
+{
+  "name": "bchen-sqlite-migrate",
+  "version": "0.1.0",
+  "description": "Lightweight SQLite migration runner for better-sqlite3 — numbered SQL files, sha256 checksums, idempotent re-apply, genesis-stamping.",
+  "license": "MIT",
+  "type": "module",
+  "main": "./dist/index.js",
+  "types": "./dist/index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./dist/index.d.ts",
+      "import": "./dist/index.js"
+    },
+    "./cli": {
+      "types": "./dist/cli.d.ts",
+      "import": "./dist/cli.js"
+    }
+  },
+  "files": ["dist", "README.md", "LICENSE"],
+  "engines": { "node": ">=20" },
+  "scripts": {
+    "build": "tsc -p tsconfig.build.json",
+    "test": "vitest run",
+    "test:watch": "vitest",
+    "typecheck": "tsc --noEmit"
+  },
+  "peerDependencies": {
+    "better-sqlite3": ">=11 <13"
+  },
+  "devDependencies": {
+    "@types/better-sqlite3": "^7.6.13",
+    "@types/node": "^22",
+    "better-sqlite3": "12.6.2",
+    "typescript": "^5.5",
+    "vitest": "^4.0.0"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://gitea.bchen.dev/brendan/sqlite-migrate.git"
+  },
+  "keywords": ["sqlite", "migration", "better-sqlite3", "schema-migrations"]
+}

tsconfig.build.json

@@ -0,0 +1,14 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "noEmit": false,
+    "declaration": true,
+    "declarationMap": false,
+    "sourceMap": false,
+    "outDir": "./dist",
+    "rootDir": "./src",
+    "allowImportingTsExtensions": false
+  },
+  "include": ["src/**/*"],
+  "exclude": ["tests/**/*", "node_modules", "dist"]
+}

tsconfig.json

@@ -0,0 +1,16 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "ES2022",
+    "moduleResolution": "bundler",
+    "lib": ["ES2022"],
+    "strict": true,
+    "esModuleInterop": true,
+    "allowImportingTsExtensions": true,
+    "noEmit": true,
+    "skipLibCheck": true,
+    "forceConsistentCasingInFileNames": true,
+    "resolveJsonModule": true
+  },
+  "include": ["src/**/*", "tests/**/*"]
+}

vitest.config.ts

@@ -0,0 +1,5 @@
+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+  test: { globals: false, environment: 'node' },
+});