fix: add wasm verification

Author: Marcus Pousette

package.json

@@ -71,7 +71,7 @@
     "start:node": "npm run build && node demo/node.mjs",
     "start:node:native": "npm run build && node demo/node-native.mjs",
     "fix": "npx prettier . --write",
-    "prepublishOnly": "npm run build && npm run fix && npm run publint && npm run check-types",
+    "prepublishOnly": "npm run build && node scripts/verify-wasm.cjs && npm run fix && npm run publint && npm run check-types",
     "deploy": "npm run prepublishOnly && git add . && git commit -am 'New release' && git push && npm publish --access public"
   },
   "postinstall": "node scripts/postinstall.cjs || true",

scripts/verify-wasm.cjs

@@ -0,0 +1,23 @@
+#!/usr/bin/env node
+const fs = require('fs');
+const path = require('path');
+
+const root = process.cwd();
+const dir = path.join(root, 'sqlite-wasm', 'jswasm');
+const required = [
+  'sqlite3.wasm',
+  'sqlite3.mjs',
+  'sqlite3-bundler-friendly.mjs',
+  'sqlite3-worker1-promiser.mjs',
+];
+
+const missing = required.filter((f) => !fs.existsSync(path.join(dir, f)));
+if (missing.length) {
+  console.error('[verify-wasm] Missing required payload files in', dir);
+  for (const f of missing) console.error(' -', f);
+  console.error('\nFix: run `npm run build` (or ensure prebuilts are checked in).');
+  process.exit(1);
+} else {
+  console.log('[verify-wasm] Payload OK in', dir);
+}
+