Function openEngine

__tests__/watcher-replaced-db.test.ts:219–231

(watch: boolean)

    });

    async function openEngine(watch: boolean): Promise<MCPEngine> {
      const seed = CodeGraph.initSync(root);
      await seed.indexAll();
      seed.close();
      if (!fs.existsSync(ENGINE)) throw new Error(`${ENGINE} missing — run \`npm run build\` first`);
      const { MCPEngine: Engine } = require(ENGINE) as { MCPEngine: typeof MCPEngine };
      const engine = new Engine({ watch, writerLockRoot: watch ? root : undefined });
      await engine.ensureInitialized(root);
      // Drain the post-open catch-up gate (and prove the project is loaded).
      const first = await engine.getToolHandler().execute('codegraph_search', { query: 'alpha' });
      expect(first.content[0].text).toMatch(/alpha/);
      return engine;
    }

    posixOnly('reopening a replaced database runs a catch-up sync into the new file', async () => {
      const engine = await openEngine(true);