io-ts-bson

io-ts codecs for bson types

This package provides io-ts codecs for bson data types.

Installation

npm install --save io-ts-bson

Usage

Database entities may be defined using the io-ts-bson types and then decoded/encoded.

import * as bson from 'bson';
import * as t from 'io-ts';
import * as bt from 'io-ts-bson';

export const UserProfile = t.type(
  {
    _id: bt.ObjectId,
    name: t.string,
    createdAt: bt.date,
  },
  'UserProfile',
);
export type UserProfile = t.TypeOf<typeof UserProfile>;

export const loadUserProfile = async (id: string) => {
  const user = await db.collection('users').findOne({
    _id: bson.ObjectId.createFromHexString(id),
  });

  return UserProfile.decode(user);
};