nex-dev-component

Slash Web APP Component - React

Project structures:

For TypeScript setup: https://blog.harveydelaney.com/creating-your-own-react-component-library/

Placement in project structure:

--src/
   ---components/
      ---input/
          ---input.tsx
          ---inputBluePrintDecorator.tsx
          ---inputAntDesignDecorator.tsx
          ---inputReactstrap.tsx
    ---patterns/
       ---observer
       ---facade
       ---strategy
       ---decorator
       ---builder
    ---factory/
       ---formFactory.tsx

Using Decorator Pattern: https://refactoring.guru/design-patterns/decorator/typescript/example

Write the text component

/**
 * The base Component interface defines operations that can be altered by
 * decorators.
 */
interface TextInputInterface {
    onChange(): void;
    setValue(): void;
    getValue(): string;
    render(): object;
}

/*
 * Class implementation
 */
class TextInput implements TextInputInterface {
    public onChange(e): void {
        this.value = e;
    }
    public setValue(value): void {
        this.value = value;
    }
    public getValue(): string {
        return this.value;
    }
    public render() {
        return <></>;
    }

}

/*
 * Base Decorator
 */
class TextInputDecorator implements TextInputInterface {
    protected component: Component;

    constructor(component: Component) {
        this.component = component;
    }
    public onChange(e): void {
        this.component.onChange(e);
    }
    public setValue(value): void {
        this.component.setValue(e);
    }
    public getValue(): string {
        return this.component.getValue();
    }
    public render(): object {
        return <input type="text" onChange={this.onChange} />;
    }

}

/*
 * Blueprint Decorator
 */
import { Input } from "@blueprint/core";

class TextInputBlueprintDecorator extends TextInputDecorator {
    public render(): object {
        return <Input onValueChange={({ target }) => super.onChange(target.value)}/>;
    }
}

/*
 * Reactstrap Decorator
 */
import { Input } from "reactstreap";

class TextInputBlueprintDecorator extends TextInputDecorator {
    public render(): object {
        return <Input onChange={({ target }) => super.onChange(target.value)}/>;
    }
}

============== React TypeScript,Storybook Setup ===============
# React Component Library

[![Build status](https://badge.buildkite.com/90ff98db996bb137c5be1bdce666c4b1ce68a25b17af0a6a04.svg)](https://buildkite.com/harvey/react-component-library)

This project skeleton was created to help people get started with creating their own React component library using:

- [Rollup](https://github.com/rollup/rollup)
- [Sass](https://sass-lang.com/)
- [TypeScript](https://www.typescriptlang.org/)

It also features:

- [Storybook](https://storybook.js.org/) to help you create and show off your components
- [Jest](https://jestjs.io/) and [React Testing Library](https://github.com/testing-library/react-testing-library) enabling testing of the components

[**Read my blog post about why and how I created this project skeleton ▸**](https://blog.harveydelaney.com/creating-your-own-react-component-library/)

## Development

### Testing

```shell
npm run test

Building

npm run build

Storybook

To run a live-reload Storybook server on your local machine:

npm run storybook

To export your Storybook as static files:

npm run storybook:export

You can then serve the files under storybook-static using S3, GitHub pages, Express etc. I've hosted this library at: https://www.harveydelaney.com/react-component-library

Generating New Components

I've included a handy NodeJS util file under util called create-component.js. Instead of copy pasting components to create a new component, you can instead run this command to generate all the files you need to start building out a new component. To use it:

npm run generate YourComponentName

This will generate:

/src/components
  /YourComponentName
    YourComponentName.tsx
    YourComponentName.stories.tsx
    YourComponentName.test.tsx
    YourComponentName.types.ts
    YourComponentName.scss

The default templates for each file can be modified under util/templates.

Don't forget to add the component to your index.ts exports if you want the library to export the component!

Installing Component Library Locally

Let's say you have another project (test-app) on your machine that you want to try installing the component library into without having to first publish the component library. In the test-app directory, you can run:

npm i --save ../react-component-library

which will install the local component library as a dependency in test-app. It'll then appear as a dependency in package.json like:

  "dependencies": {
    ...
    "react-component-library": "file:../react-component-library",
    ...
  },

Your components can then be imported and used in that project.

Publishing

First make sure that you've updated the name field in package.json to reflect your NPM package name in your private or public NPM registry. Then run:

npm publish

Component Usage

Let's say you created a public NPM package called harvey-component-library with the TestComponent component created in this repository.

Usage of the component (after the library installed as a dependency into another project) will be:

import React from "react";
import { TestComponent } from "harvey-component-library";

const App = () => (
  <div className="app-container">
    <h1>Hello I'm consuming the component library</h1>
    <TestComponent theme="primary" />
  </div>
);

export default App;

Using Internal SASS Variables

I've found that it's helpful to export SASS variables to projects consuming the library. As such, I've added the rollup-plugin-copy NPM package and used it to copy the typography.scss and variables.scss into the build directory as part of the Rollup bundle process. This allows you to use these variables in your projects consuming the component library.

For example, let's say you installed harvey-component-library into your project. To use the exported variables/mixins, in a SASS file you would do the following:

@import '~harvey-component-library/build/typography';

.example-container {
    @include heading;

    color: $harvey-white;
}

Can I code split my components?

Yes you can.

Read this section of my blog post to find out how.

Or check out this commit to see what changes are neccesary to implement it.