codemix / database-types

A generic type generator for various databases.

database-types

A generic type generator for various databases.

The current supported database backend is Postgres. Track #1 issue for MySQL support.

Use case

If you are developing applications in JavaScript and using either of the strict type systems, then you can use database-types to generate types describing the database.

Example usage

Generating Flow types

export DATABASE_TYPES_DATABASE_CONNECTION_URI=postgres://postgres:password@127.0.0.1/test
export DATABASE_TYPES_COLUMN_FILTER="return !['raster_overviews', 'raster_columns', 'geometry_columns', 'geography_columns', 'spatial_ref_sys'].includes(tableName)"
export DATABASE_TYPES_DIALECT=flow

database-types generate-types > ./types.js

This generates file containing Flow type declarations in the following format:

export type ReservationSeatRecordType = {|
  +createdAt: string,
  +id: number,
  +reservationId: number,
  +seatId: number
|};

export type TicketTypeRecordType = {|
  +cinemaId: number,
  +id: number,
  +name: string,
  +nid: string,
  +policy: string | null
|};

// ...

CLI

$ npm install database-types -g
$ database-types --help