Javascript to typescript converter online

JSON to Typescript

JSON Formatter is free to use tool which helps to format, validate, save and share your JSON data.

• Minify CSS
• CSS Beautifier
• CSS Formatter
• CSS Pretty Print
• CSS to LESS
• CSS to SCSS
• CSS to SASS
• CSS to Stylus
• Stylus to CSS
• Stylus to LESS
• Stylus to SCSS
• Stylus to SASS
• LESS to CSS
• LESS to SCSS
• LESS to SASS
• LESS to Stylus
• SCSS to CSS
• SCSS to LESS
• SCSS to SASS
• SCSS to Stylus
• SASS to CSS
• SASS to LESS
• SASS to SCSS
• SASS to Stylus

• JSON to Java
  XML to Java
• JSON to Python
  XML to Python
• JSON to Objective-C
  XML to Objective-C
• JSON to JSON Schema
  XML to JSON Schema
• JSON to Swift
  XML to Swift
• JSON to C#
  XML to C#
• JSON to Go
  XML to Go
• JSON to Rust
  XML to Rust
• JSON to Crystal
  XML to Crystal
• JSON to C++
  XML to C++
• JSON to TypeScript
  XML to TypeScript
• JSON to JavaScript Proptypes
  XML to JavaScript Proptypes
• JSON to Flow
  XML to Flow
• JSON to Kotlin
  XML to Kotlin
• JSON to Elm
  XML to Elm
• JSON to Ruby
  XML to Ruby
• JSON to Dart
  XML to Dart
• JSON to Pike
  XML to Pike
• JSON to Haskell
  XML to Haskell

• JSON Formatter
• JSON5 Formatter
• XML Formatter
• HTML Formatter
• YAML Formatter
• JavaScript Formatter
• CSS Formatter
• C# Formatter
• Java Formatter
• GraphQL Formatter
• Angular Formatter
• Vue JS Formatter
• LESS Formatter
• SCSS Formatter
• TypeScript Formatter
• Babel Formatter
• Markdown Formatter
• MDX Formatter
• Glimmer JS Formatter
• LWC Formatter
• PHP Formatter
• WSDL Formatter
• SOAP Formatter

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Create dashboards for your development needs

Frontend Toolkit helps you organize everything you need in your daily work in one place. Without annoying ads and fully customizable. Say goodbye to cluttered websites and hello to a streamlined experience.

A set of built-in widgets allows you to do the tedious parts of your work quickly.

Color Converter

Convert your colors to different CSS units by simply pasting your color anywhere on the site. RGB to HEX, HEX to RGB, HEX to HSL and many more!

SVG Converter

Optimize your SVG based on many different options and (optionally) transform the SVG to JSX, TSX, React Native, CSS or Base64.

Base64 Converter

Decode Base64 or encode Base64 strings and easily copy the transformed output.

CSS Converter

Minify CSS or beautify/format CSS and easily copy the transformed output.

URL Converter

Encode and decode your url and easily copy the transformed output.

Regex Tester

Regular Expression tester with syntax highlighting for Javascript.

Npm Package Size

Get size information about your npm dependencies. To determine the dependency size the awesome bundlephobia service is used.

JSON Converter

Use the JSON Converter to minify or beautify/format your JSON. It can also generate TypeScript interfaces based on the JSON input.

JS/TS Converter AI-enhanced

Automatically convert your JavaScript code to TypeScript. Minify, beautify or format your JavaScript and TypeScript code.

Image Converter

Compress your images (jpg, png, webp, gif) easily in the browser and compare the outcome with the original image.

CSS Triangle Generator

Generate CSS triangles in different directions, sizes and colors. Preview your selection and easily copy paste the CSS code.

CSS & SVG Symbols

Collection of SVG/CSS icons and symbols, easy to copy and paste as SVG or CSS.

Create your own widgets

Missing something that would be useful to have on your dashboard?

Embed websites

Easily access your favorite websites directly from your dashboard with our simple embed feature. No need to constantly switch back and forth between tabs, just embed your desired website for quick and convenient access.

Add markdown

Keep track of your todos, compile a list of essential tools for your next project, or store your frequently used code snippets in a user-friendly and easily readable format. Upgrade your productivity and streamline your workflow with markdown.

# Build image docker build -t . # Start new container with image docker run -dp 3000:3000 # Get container ids docker ps # Get logs from container docker logs -f # SH into running container: docker exec -it bash
 
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Online Javascript to Typescript Converter
 
This is a utility tool to convert a JavaScript codebase to TypeScript, while trying to solve some of the common TypeScript errors that will be received upon such a conversion.
 
Basic variable types
 
 
 
Type
 
Example
 
Notes
 
  
 
 
number
 
let myNumber: number = 6
 
Represent all numbers : integer, float, hex etc.
 
 
 
string
 
let fullName: string = Bob Bobbington
 
Text with all text functions (indexOf, replace etc.)
 
 
 
boolean
 
let isTrue: boolean = true
 
true/false value
 
 
 
Array
 
let list: Array = [1, 2, 3]
 
Shorter version: let list: number[] = [1, 2, 3];
 
 
 
Tuple
 
let x: [string, number] = ['test', 2];
 
Array contains ains items with various types
 
 
 
any
 
let x: any = 2;
 
Everything can be assigned to value with any type
 
 
 
Enum
 
enum Color 
Usage: let c: Color = Color.Blue;
 
 
 
Never
 
function fail(): never >
 
Indicating that something never should happen
 
 
 
Null or undefined
 
let u: undefined = undefined;
 
In TS there is dedicated type for null and undefined
 
 
 
Object
 
let x:Object = ;
 
Represents any object
 
 
 
Function
 
let myFn:Function = function() 
Represents any function
 
 
 
 
Functions
 
 
 
Concept
 
Code
 
  
 
 
Function
 
 < (arg1 :Type, argN :Type) :Type; >or (arg1 :Type, argN :Type) => Type;
 
 
 
Constructor
 
 < new () :ConstructedType; >or new () => ConstructedType;
 
 
 
Function type with optional param
 
(arg1 :Type, optional? :Type) => ReturnType;
 
 
 
Function type with rest param
 
(arg1 :Type, . allOtherArgs :Type[]) => ReturnType;
 
 
 
Function type with static property
 
 
Default argument
 
function fn(arg1 :Type = 'default') :ReturnType <>
 
 
 
Arrow function
 
(arg1 :Type) :ReturnType =>; <> or (arg1 :Type) :ReturnType =>; Expression
 
 
 
 
rimitive Types
 
 
 
Type
 
Code
 
  
 
 
Any type (explicitly untyped)
 
any
 
 
 
void type (null or undefined, use for function returns only)
 
void
 
 
 
String
 
string
 
 
 
Number
 
number
 
 
 
Boolean
 
boolean
 
 
 
 
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TypeScript to JavaScript
 
This tool allows to convert typescript to javascript online. You can get the javascript code corresponding to your typescript source code.
 
This converter can also be useful to compare the differences between typescript syntax and javascript syntax by doing some testing.
 
To convert your typescript code, you must copy and paste, drag and drop a typescript file or directly type in the "Typescript code" online editor below, and click on "Convert" button.
 
You can see the user guide to help you to use this typescript compiler tool.
 
User guide
 
 
Fill in the editor above with your typescript code. You can Drag and drop your file, copy and paste your code, or type directly into the editor above.
 
Click on "Convert" button to execute the compilation of your source code. The javascript code will be displayed as soon as the compilation is finished.
 
You can get your source code by clicking on the "Download file" or "Copy to clipboard" buttons.
 
 
Typescript to javascript compiler
 
TypeScript is a programming language developed by Microsoft. It is a superset of JavaScript, it extends JavaScript by adding types. TypeScript is designed for development of large applications.
 
The typescript source code is transcompiled into JavaScript. JavaScript codes are also valid TypeScript programs because typescript extends JavaScript.
 
This typescript converter tool allows to convert typescript to javascript. It can be useful to make online test to discover typescript and find the differences between JavaScript and TypeScript.
 
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