HarlemWriting your own extension
Writing an extension for Harlem is very straightforward. An extension is simply a function that returns an object to be merged with the store instance.
Basic example
Let's take a look at a simple example:
typescript
import type {
InternalStore,
BaseState,
} from '@harlem/core';
interface Options {
option1: string;
option2: number;
}
export default function resetExtension<TState extends BaseState>(options?: Options) {
return (store: InternalStore<TState>) => {
function doSomethingWithTheStore(input: string) {
// do something
}
return {
doSomethingWithTheStore
};
};
}
A store instance would then look like this:
typescript
const STATE = {
firstName: 'John',
lastName: 'Smith'
};
const {
state,
getter,
mutation,
doSomethingWithTheStore
} = createStore('user', STATE);
Publishing your extension
To make it easy for users to find Harlem extensions it is recommended that you name your extension with a harlem-extension- prefix if publishing to the NPM registry.