How do I designate the compiled migration location?

Currently, I am utilizing the PostgreSQL database ORM Sequelize along with TypeScript as a backend script within the Express Node.js environment.

My first inquiry is: Is it possible to directly create a model in .ts format?

The second question pertains to an issue encountered while attempting to migrate the database. The error message states:

"File: 20180424170257-create-todo.ts does not match pattern: /.js$/"

I would like to know where I should specify the compiled migration.

Appreciate your assistance.

Answer №1

When using Sequelize, it doesn't include its own type definitions. To add them, you'll need to install the types from DefinitelyTyped.

npm install @types/sequelize

You can define models with these type definitions in place. Refer to the tests of sequelize.d.ts for examples.

Here is an example:

interface TaskAttributes {
    revision? : number;
    name? : string;
}

// For instance methods
interface TaskInstance extends Sequelize.Instance<TaskAttributes> {
    upRevision(): void { ... };
}

const GTask = s.define<TaskInstance, TaskAttributes>( 'task', { 
    revision : Sequelize.INTEGER, 
    name : Sequelize.STRING 
} );

In regards to your second question, Umzug uses plain JavaScript files for migrations. You will need to either compile them to JS or write them directly in JavaScript if you are using TypeScript.

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