How use in electron + better-sqlite3

[aquarius-wing]

Hello everyone, first of all, thank you for developing this cool application.

I really want to use it in my own project, https://meogic.com. It is a project with a tech stack that uses electron as the client tool, knex for SQL encapsulation and migration, and objectionjs for ORM.

I tried reading the official documentation at https://vlcn.io/docs/cr-sqlite/js/nodejs, then looked at https://vlcn.io/docs/cr-sqlite/js/reactivity, which led me to the following code:

import SQLiteDB from 'better-sqlite3'
import { extensionPath } from "@vlcn.io/crsqlite";

const db = new SQLiteDB(pathToDb)
db.loadExtension(extensionPath)
const rx = tblrx(db)

const disposable = rx.onRange(["posts"], (updateTypes) => {
  console.log("posts changed", updateTypes);
});

Then I got an error,

TypeError: this.db.onUpdate is not a function
at new TblRx (file:///Users/wing/Develop/electron-vite-vue/node_modules/@vlcn.io/rx-tbl/dist/tblrx.js:33:37)
at tblrx (file:///Users/wing/Develop/electron-vite-vue/node_modules/@vlcn.io/rx-tbl/dist/tblrx.js:164:12)
at file:///Users/wing/Develop/electron-vite-vue/dist-electron/main/index.js:12:12
at ModuleJob.run (node:internal/modules/esm/module_job:194:25)

I have no idea how to handle it, please help me.

Thanks!

[tantaman]

Thanks for reporting. better-sqlite3 doesn't expose the sqlite update hook :(

We could craft a subscription implementation that uses triggers (as suggested here: WiseLibs/better-sqlite3#62) or expose the update_hook in better-sqlite3 and hope they take the PR.