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There are several ways we can create react applications from scratch
- with create-react-app
- existing react javascript: This post does not cover how to convert existing react applications to typescript. Usually, every developer writes react components using javascript default
Typescript is an advanced version of javascript with more features like strict type checking and a lot of advantages.
React with Typescript
Requirement
Node and npm are installed already
React Javascript,CSS,HTML
Visual studio code editor
How To Create a React App Using Typescript
First, create a react using the create-react-app CLI tool
npx create-react-app react-typescript-app --template typescript
here is a command-line output
A:\work>npx create-react-app react-typescript-example --template typescript
Creating a new React app in A:\work\react-typescript-example.
Installing packages. This might take a couple of minutes.
Installing react, react-dom, and react-scripts with cra-template-typescript...
added 1369 packages in 7m
169 packages are looking for funding
run `npm fund` for details
Initialized a git repository.
Installing template dependencies using npm...
npm WARN deprecated source-map-resolve@0.6.0: See https://github.com/lydell/source-map-resolve#deprecated
added 38 packages, and changed 1 package in 41s
169 packages are looking for funding
run `npm fund` for details
We detected TypeScript in your project (src\App.test.tsx) and created a tsconfig.json file for you.
Your tsconfig.json has been populated with default values.
Removing template package using npm...
removed 1 package, and audited 1407 packages in 9s
169 packages are looking for funding
run `npm fund` for details
6 moderate severity vulnerabilities
To address all issues (including breaking changes), run:
npm audit fix --force
Run `npm audit` for details.
Created git commit.
Success! Created react-typescript-example at A:\work\react-typescript-example
Inside that directory, you can run several commands:
npm start
Starts the development server.
npm run build
Bundles the app into static files for production.
npm test
Starts the test runner.
npm run eject
Removes this tool and copies build dependencies, configuration files
, and scripts into the app directory. If you do this, you can’t go back!
We suggest that you begin by typing:
cd react-typescript-example
npm start
Happy hacking!
create-react-app by default create a react javascript prototype codebase add –template typescript to create a react app in typescript codebase.
Go to the application folder, You can start the application by the npm start command
cd react-typescript-example
npm start
The application server is started and listening at http://localhost:3000/ url
Typescrip tcomponents
In React everything is a component,
Let’s discuss how to write a component in typescript.
There are two types of components in react.
- Functional components also called stateless component
- Class components also called stateful components
