zeichen-legacy/src/utilities/Instance.ts

import * as Sequelize from 'sequelize'

type ModelAttribute = {
  allowNull?: boolean,
  primaryKey?: boolean,
  type: Sequelize.DataType,
}

type Model = {
  tableName?: string,
  modelName?: string,
  options?: {
    timestamps?: boolean,
    paranoid?: boolean,
    createdAt?: string | boolean,
    updatedAt?: string | boolean,
    deletedAt?: string | boolean,
  },
  rawAttributes: Record<string, ModelAttribute>,
}

type InferType<V extends Sequelize.DataType> = (
  V extends typeof Sequelize.STRING ? string :
  V extends typeof Sequelize.TEXT ? string :
  V extends ReturnType<typeof Sequelize.TEXT> ? string :
  V extends typeof Sequelize.DATE ? Date :
  V extends typeof Sequelize.DATEONLY ? Date :
  V extends typeof Sequelize.UUIDV4 ? string :
  unknown
)

type InferProps<M extends Model> = {
  [K in keyof M['rawAttributes']]-?: InferType<M['rawAttributes'][K]['type']>
}

export default InferProps