Meteor Create Typed Collection

The Meteor Typed Collection package simplifies the creation of Meteor collections in TypeScript, integrating seamlessly with Zod for schema validation. This utility allows you to define a collection with a specified name and schema, including custom methods, providing a type-safe and structured approach to working with collections in a Meteor project.

How it works

The createTypedCollection function is at the core of this package. It takes a ZodObject representing the anticipated shape of your collection documents and optional custom methods. The resulting Meteor collection is enriched with custom methods and adheres to the specified schema.

Usage

1. Installation: Make sure to install the necessary dependencies, including Zod and your Meteor Typed Collection package.

meteor add hschmaiske:create-typed-collection
meteor npm i zod

2. Import the function: Import the createTypedCollection function into your TypeScript file.

1import { createTypedCollection } from "meteor/hschmaiske:create-typed-collection";

3. Define your ZodObject for the collection schema: Create a ZodObject that represents the expected structure of your collection documents.

1const schema = z.object({
2  name: z.string(),
3  age: z.number(),
4  hobbies: z.array(z.string()),
5});

4. Define your custom methods: Create an object with the custom methods you want to add to your collection. The methods will be added to the collection as static methods.

1const customCollectionMethods = {
2  async getPeopleWithHobby(hobby: string) {
3    return People.find({ hobbies: hobby }).fetchAsync();
4  },
5};

5. Create the Typed Collection: Call the createTypedCollection function with the name of your collection and the ZodObject representing the schema. The function returns a Meteor collection that adheres to the specified schema.

1const People = createTypedCollection({
2  name: "people",
3  schema,
4  customCollectionMethods
5});

6. Use the Typed Collection: You can now use the collection as you would any other Meteor collection. The collection documents will be type-safe and the custom methods will be available on the collection.

1await People.insertAsync({ name: "John", age: 30, hobbies: ["hiking", "biking"] });
2
3const peopleWithHikingHobby = await People.getPeopleWithHobby("hiking");

7. Enjoy the benefits of type-safety: If you try to insert a document that does not adhere to the specified schema, you will get a TypeScript error. If you try to call a custom method that does not exist on the collection, you will get a TypeScript error.

Optional: You can also use the createTypedCollection function with an existing Meteor collection. This can be useful if you want to add custom methods to an existing collection. The function will return a Meteor collection that adheres to the specified schema and includes the custom methods.

1const Users = createTypedCollection({
2  instance: Meteor.users,
3  schema,
4  customCollectionMethods
5})

API

Options

Name	Type	Description	Required
name	string	The name of the collection.	Required if instance is not provided.
schema	ZodObject	The ZodObject representing the schema of the collection documents.	Required.
customCollectionMethods	object	An object with custom methods to add to the collection.	Optional.
instance	Mongo.Collection	An existing Meteor collection to add custom methods to.	Optional.

Returns

A Meteor collection that adheres to the specified schema and includes the custom methods.