Looking to create a function that takes the knex instance as a parameter.
Attempting to achieve this through:
import knex from "knex";
export async function createTestTable(_knex: ReturnType<knex>) {
...
}
Encountering the error
Cannot use namespace 'knex' as a type.ts(2709).If you're unsure about the type of the variable "knex," you can use the typeof operator to clarify. Currently, there seems to be confusion between its value and its namespace.
import knex from "knex";
export async function createTestTable(_knex: ReturnType<typeof knex>) {
}
One of the new features in the latest versions of knex is a specific type that can now be directly imported from the library
Import { Knex } from 'knex'
This allows for proper typing of the knex instance object and enables the use of generics based on the database schema.
To define the type Knex, you can alternatively use ReturnType<typeof knex> to specify the instance.
Here's an example of how to use it:
import knex, { Knex } from 'knex';
const knexObj = knex({
client: 'sqlite3',
connection: {
filename: './data.db',
},
});
async function connDB(kInstance: Knex) {
await kInstance.schema
.createTable('users', (table) => {
table.increments('id');
table.string('user_name');
})
// ...and another
.createTable('accounts', (table) => {
table.increments('id');
table.string('account_name');
table.integer('user_id').unsigned().references('users.id');
});
}
connDB(knexObj);
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