typescript: unable to import QueryBuilder interface

Environment

Knex version: 0.95.11 Typescript version: 4.4.3

@lorefnon

Bug

Hi,

I’m unsure how to import a QueryBuilder generic interface? (or anything from Knex namespace defined in index.d.ts?)

as far as I understand the typing:

import { Knex } from 'knex'

will import an interface representing an active connection, knex instance.

import { knex } from 'knex'

imports an initialization function that returns an object conforming to a Knex interface mentioned above

yet I’m trying to get to a QueryBuilder<TRecord, TResult> 😃

I’m writing chainable query modifying functions used for pagination, universal filtering etc. of type:

(QueryBuilder) => QueryBuilder

Knex interface is quite similar to QueryBuilder so I suppose that most people use this? But I need an actual QueryBuilder for generic typing of my returns, and clone() etc calls that are not available on Knex

Thanks!

edit, my tsconfig if relevant

{
  "include": ["src", "test"],
  "compilerOptions": {
    "lib": ["es2020"],
    "module": "ESNext",
    "target": "es2020",
    "importHelpers": true,
    "declaration": true,
    "sourceMap": true,
    "rootDir": "./src",
    "strict": true,
    "resolveJsonModule": true,
    "noImplicitAny": true,
    "strictNullChecks": true,
    "strictFunctionTypes": true,
    "strictPropertyInitialization": true,
    "noImplicitThis": true,
    "alwaysStrict": true,
    "noUnusedLocals": false,
    "noUnusedParameters": false,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    "moduleResolution": "node",
    "baseUrl": "./",
    "paths": {
      "*": ["src/*", "node_modules/*"]
    },
    "esModuleInterop": true
  }
}

[maximelkin]

I’ve tried with exactly your version of typescript and your tsconfig.json, and its working. (idk maybe i miss something)

Namespace ‘“…”.Knex’ has no exported member ‘QueryBuilder’.

It definitely imported namespace here

[leshy]

Actually you are right @maximelkin, I wasn’t sure how ts is supposed to handle interfaces, functions and namespaces with the same name.

I created a new project just to test this (https://github.com/leshy/knextest) it seems that the issue is somewhere deeper in my ts stack (I’m using tsdx for ts dev env management https://tsdx.io/)

running tsdx compile produces the error I’m mentioning, yet running tsc manually compiles without issues.

Thanks for the help and sorry for confusion 😃 I’ll investigate my stack and close this now

edit, Investigating this further under tsdx project, https://github.com/jaredpalmer/tsdx/issues/1095