Hono•2mo ago

Knex + Hono + Bun Connection Errors

I was using knex on bun+hono and was attempting to make a connection via the following syntax

import { Knex, knex } from 'knex';
import pg from 'pg';

const client = knex({
  client: 'pg',  // Replace 'pg' with your database client if different
  connection: {
    host: "hostDB",
    port: 5432,
    user: "postgres",
    password: "passwordDB",
    database: "databaseName",
    ssl: {
      rejectUnauthorized: false,
    },
  },
  searchPath: ['knex', 'public'],  // Optional: Specify search path for PostgreSQL
});

import { Knex, knex } from 'knex';
import pg from 'pg';

const client = knex({
  client: 'pg',  // Replace 'pg' with your database client if different
  connection: {
    host: "hostDB",
    port: 5432,
    user: "postgres",
    password: "passwordDB",
    database: "databaseName",
    ssl: {
      rejectUnauthorized: false,
    },
  },
  searchPath: ['knex', 'public'],  // Optional: Specify search path for PostgreSQL
});

and i was getting the following error

TypeError: this.driver.Client is not a constructor
    at Client_PG._acquireOnlyConnection (file:///home/sanner/Coding/node_modules/knex/lib/dialects/postgres/index.js:83:24)
    at Client_PG.acquireRawConnection (file:///home/sanner/Coding//node_modules/knex/lib/dialects/postgres/index.js:101:17)
    at create (file:///home/
/node_modules/knex/lib/client.js:262:39)

TypeError: this.driver.Client is not a constructor
    at Client_PG._acquireOnlyConnection (file:///home/sanner/Coding/node_modules/knex/lib/dialects/postgres/index.js:83:24)
    at Client_PG.acquireRawConnection (file:///home/sanner/Coding//node_modules/knex/lib/dialects/postgres/index.js:101:17)
    at create (file:///home/
/node_modules/knex/lib/client.js:262:39)

I was trying to connect to Knex with a postgres client however I am getting this error, I tried many things such as creating a client and adding that to client. This code was able to work on a pnpm worker with nodejs, however it does not work with bun+hono

1 Reply

proudyyyy•6d ago

What if you try writing it uppercase? Something like this simple with just a local file is working for me.

import Knex from "knex";

export const db = Knex({
    client: 'sqlite3',
    connection: {
        filename: "./db.sqlite"
    },
    useNullAsDefault: true
})

db.schema.hasTable('users').then(exists => {
    if (!exists) {
      return db.schema.createTable('users', table => {
        table.increments('id').primary();
        table.string('username').notNullable();
        table.string('email').unique().notNullable();
        table.string('password').notNullable();
        table.datetime('created_at').notNullable().defaultTo(db.fn.now());
        table.datetime('updated_at').notNullable().defaultTo(db.fn.now());
        table.text('appearance').notNullable().defaultTo("default");
        table.string('icon');
        table.text('biography');
      });
    }
});

import Knex from "knex";

export const db = Knex({
    client: 'sqlite3',
    connection: {
        filename: "./db.sqlite"
    },
    useNullAsDefault: true
})

db.schema.hasTable('users').then(exists => {
    if (!exists) {
      return db.schema.createTable('users', table => {
        table.increments('id').primary();
        table.string('username').notNullable();
        table.string('email').unique().notNullable();
        table.string('password').notNullable();
        table.datetime('created_at').notNullable().defaultTo(db.fn.now());
        table.datetime('updated_at').notNullable().defaultTo(db.fn.now());
        table.text('appearance').notNullable().defaultTo("default");
        table.string('icon');
        table.text('biography');
      });
    }
});

@sanner

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Knex + Hono + Bun Connection Errors