npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

loadable-state

v1.1.0

Published

Hanldle API call redux state with Loadable

Downloads

9

Readme

Loadable-State

This package is to help you model http request state. It's an add-on to redux/ngrx

Why use this package?

Reduce boilerplate and better code.

I wrote details in this 5-min blog: https://blog.angularindepth.com/handle-api-call-state-nicely-445ab37cc9f8

Install

npm install loadable-state

Get Started

Let's assume we need to send an http request to get a list of today's news. And we are using Angular/ngrx.

####Step1: Model your state

export interface News extends Loadable {
    news: string[];
}

In this way, News model has 4 fields: news, loading, success and error.

####Step2: Create your actions

export enum NewsActionsTypes {
  Load = '[NEWS PAGE] LOAD NEWS',
  LoadSuccess = '[NEWS PAGE] LOAD NEWS SUCCESS',
  LoadError = '[NEWS PAGE] LOAD NEWS ERROR',
}

export class LoadNews implements Action {
  readonly type = NewsActionsTypes.Load;
}

export class LoadNewsSuccess implements Action {
  readonly type = NewsActionsTypes.LoadSuccess;
  constructor(public payload: {entities: string[]}) {}
}

export class LoadNewsError implements Action {
  readonly type = NewsActionsTypes.LoadError;
  // Notes that `error` has to be like this, cannot be wrapped inside a payload
  constructor(public error: any) {}
}
export type NewsActions = LoadNews | LoadNewsSuccess | LoadNewsError

####Step3 Reducer (Most Important)

// base reducer should only update non-loadable states
function baseNewsReducer(state: News = createDefaultNews(), action: NewsActions): News {
  switch (action.type) {
    case NewsActionsTypes.LoadSuccess:
      return {
        ...state,
        entities: action.payload.entities
      };
    default:
      return state;
  }
}
// withLoadable enhances baseReducer to update loadable state
export function newsReducer(state: News, action: Action): News {
  return withLoadable(baseNewsReducer, {
    loadingActionType: NewsActionsTypes.Load,
    successActionType: NewsActionsTypes.LoadSuccess,
    errorActionType: NewsActionsTypes.LoadError,
  })(state, action);
}

baseNewsReducer handles non-loadable states (i.e. entities)

newsReducer will actually apply withLoadable enhancer to baseReducer to give some “magic” to baseReducer , and the “magic” is to handle the 3 loadable states changes automatically.

####Step4 Effects

@Effect()
loadNews = this.actions$.pipe(
 ofType(NewsActionsTypes.Load),
 switchMap(action => this.http.get('some url')),
 map((response: any) => new LoadNewsSuccess({entities: response.todaysNews})),
 catchError(error => of(new LoadNewsError(error)))
);

Checkout this StackBlitz for a complete example. https://stackblitz.com/github/zhaosiyang/loadable-example