TypeScript | TypeScript is a superset of JavaScript | Runtime Evironment library

 by   microsoft TypeScript Version: v5.1.3 License: Apache-2.0

kandi X-RAY | TypeScript Summary

kandi X-RAY | TypeScript Summary

TypeScript is a TypeScript library typically used in Server, Runtime Evironment, Angular, Nodejs, Docker applications. TypeScript has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

TypeScript is a language for application-scale JavaScript. TypeScript adds optional types to JavaScript that support tools for large-scale JavaScript applications for any browser, for any host, on any OS. TypeScript compiles to readable, standards-based JavaScript. Try it out at the playground, and stay up to date via our blog and Twitter account. Find others who are using TypeScript at our community page.

            kandi-support Support

              TypeScript has a medium active ecosystem.
              It has 92043 star(s) with 11841 fork(s). There are 2150 watchers for this library.
              There were 3 major release(s) in the last 12 months.
              There are 6002 open issues and 31393 have been closed. On average issues are closed in 140 days. There are 282 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of TypeScript is v5.1.3

            kandi-Quality Quality

              TypeScript has 0 bugs and 0 code smells.

            kandi-Security Security

              TypeScript has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              TypeScript code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              TypeScript is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              TypeScript releases are available to install and integrate.
              Installation instructions are not available. Examples and code snippets are available.

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            TypeScript Key Features

            No Key Features are available at this moment for TypeScript.

            TypeScript Examples and Code Snippets

            No Code Snippets are available at this moment for TypeScript.

            Community Discussions


            React 18 TypeScript children FC
            Asked 2022-Apr-09 at 23:47

            I upgraded to React 18 and things compiled fine. Today it seems every single component that uses children is throwing an error. Property 'children' does not exist on type 'IPageProps'.

            Before children props were automatically included in the FC interface. Now it seems I have to manually add children: ReactNode. What is the correct typescript type for react children?

            Is this part of the React 18 update, or is something screwed up in my env?




            Answered 2022-Apr-07 at 20:34

            It looks like the children attribute on the typescript typings were removed.

            I had to manually add children to my props; There is probably a better solution to fix this, but in the interim, this works.

            Source https://stackoverflow.com/questions/71788254


            AngularFireModule and AngularFireDatabaseModule not being found in @angular/fire
            Asked 2022-Apr-01 at 12:56

            I am trying to implement Firebase Realtime Database into a angular project and Im getting stuck at one of the very first steps. Importing AngularFireModule and AngularFireDatabaseModule. It gives me the following error:



            Answered 2021-Aug-26 at 13:20

            AngularFire 7.0.0 was launched yesterday with a new API that has a lot of bundle size reduction benefits.

            Instead of top level classes like AngularFireDatabase, you can now import smaller independent functions.

            Source https://stackoverflow.com/questions/68939014


            ESLint: 8.0.0 Failed to load plugin '@typescript-eslint'
            Asked 2022-Mar-31 at 09:08

            Could you help me, I've got this error when I try building a project?

            Oops! Something went wrong! :(

            ESLint: 8.0.0

            TypeError: Failed to load plugin '@typescript-eslint' declared in 'src.eslintrc': Class extends value undefined is not a constructor or null Referenced from: src.eslintrc




            Answered 2021-Oct-10 at 10:33


            Why does typescript allow me to import dependencies it can't use at runtime?
            Asked 2022-Mar-28 at 07:32

            You can see my sample project here: https://github.com/DanKaplanSES/typescript-stub-examples/tree/JavaScript-import-invalid

            I have created this file called main.ts:



            Answered 2021-Sep-26 at 13:34

            Your issue is related to interoperability between TypeScript/ECMAScript modules and CommonJS.

            When it comes to the differences between ECMAScript modules and CommonJS modules:

            • CommonJS modules are meant to be imported like const library = require('library') which allows to retrieve the full exports object of that library. There is no notion of default import in CommonJS
            • ECMAScript modules have explicit export clauses for every exported item. They also feature a default import syntax which allows to retrieve the default export in a local variable.

            In order to implement interoperability between CommonJS modules and TypeScript's default import syntax, CommonJS modules can have a default property.

            That default property can even be added automatically by TypeScript when esModuleInterop is enabled (which also enables allowSyntheticDefaultImports). This option adds this helper function at transpilation time:

            Source https://stackoverflow.com/questions/69200697


            The unauthenticated git protocol on port 9418 is no longer supported
            Asked 2022-Mar-27 at 13:23

            I have been using github actions for quite sometime but today my deployments started failing. Below is the error from github action logs



            Answered 2022-Mar-16 at 07:01

            First, this error message is indeed expected on Jan. 11th, 2022.
            See "Improving Git protocol security on GitHub".

            January 11, 2022 Final brownout.

            This is the full brownout period where we’ll temporarily stop accepting the deprecated key and signature types, ciphers, and MACs, and the unencrypted Git protocol.
            This will help clients discover any lingering use of older keys or old URLs.

            Second, check your package.json dependencies for any git:// URL, as in this example, fixed in this PR.

            As noted by Jörg W Mittag:

            There was a 4-month warning.
            The entire Internet has been moving away from unauthenticated, unencrypted protocols for a decade, it's not like this is a huge surprise.

            Personally, I consider it less an "issue" and more "detecting unmaintained dependencies".

            Plus, this is still only the brownout period, so the protocol will only be disabled for a short period of time, allowing developers to discover the problem.

            The permanent shutdown is not until March 15th.

            For GitHub Actions:

            As in actions/checkout issue 14, you can add as a first step:

            Source https://stackoverflow.com/questions/70663523


            in Typescript, try...catch error object shows "Object is of type 'unknown'.ts(2571)"
            Asked 2022-Mar-18 at 03:47
            router.get('/cells', async (req, res) => {
                try {
                  const result = await fs.readFile(fullPath, { encoding: 'utf-8' });
                } catch (err) {
                  if (err.code === 'ENOENT') { // Object is of type 'unknown'.ts(2571) (local var) err: unknown
                    await fs.writeFile(fullPath, '[]', 'utf-8');
                  } else {
                    throw err;


            Answered 2021-Oct-03 at 06:44

            In JavaScript/TypeScript you can throw anything, not only errors. In theory it could be anything in the catch block. If you want to prevent the type error it could make sense to check if the unknown value is a system error before checking the code.

            Source https://stackoverflow.com/questions/69422525


            Uncaught ReferenceError: Buffer is not defined
            Asked 2022-Mar-17 at 15:41

            Our application kept showing the error in the title. The problem is very likely related to Webpack 5 polyfill and after going through a couple of solutions:

            1. Setting fallback + install with npm


            Answered 2021-Aug-10 at 08:15

            Answering my own question. Two things helped to resolve the issue:

            1. Adding plugins section with ProviderPlugin into webpack.config.js

            Source https://stackoverflow.com/questions/68707553


            ESlint - Error: Must use import to load ES Module
            Asked 2022-Mar-17 at 12:13

            I am currently setting up a boilerplate with React, Typescript, styled components, webpack etc. and I am getting an error when trying to run eslint:

            Error: Must use import to load ES Module

            Here is a more verbose version of the error:



            Answered 2022-Mar-15 at 16:08

            I think the problem is that you are trying to use the deprecated babel-eslint parser, last updated a year ago, which looks like it doesn't support ES6 modules. Updating to the latest parser seems to work, at least for simple linting.

            So, do this:

            • In package.json, update the line "babel-eslint": "^10.0.2", to "@babel/eslint-parser": "^7.5.4",. This works with the code above but it may be better to use the latest version, which at the time of writing is 7.16.3.
            • Run npm i from a terminal/command prompt in the folder
            • In .eslintrc, update the parser line "parser": "babel-eslint", to "parser": "@babel/eslint-parser",
            • In .eslintrc, add "requireConfigFile": false, to the parserOptions section (underneath "ecmaVersion": 8,) (I needed this or babel was looking for config files I don't have)
            • Run the command to lint a file

            Then, for me with just your two configuration files, the error goes away and I get appropriate linting errors.

            Source https://stackoverflow.com/questions/69554485


            npx create-react-app prompting to globally uninstall non-existent create-react-app package?
            Asked 2022-Feb-19 at 03:11

            I am having problems with npx create-react-app involving global installs. My confusion arises because as far as I'm aware the create-react-app package is not installed on my machine.

            Some Details:

            I start a react project (with typescript template) as I have previously and recently done on this same machine a number of times:

            npx create-react-app --template typescript .

            I get this prompt from the terminal

            Need to install the following packages: create-react-app Ok to proceed? (y)

            I press y to confirm it's okay to proceed. (If I press n, the process terminates with the following error: npm ERR! canceled.) The terminal then displays the following message



            Answered 2021-Dec-21 at 14:45

            You can try to locate the installed version by running:

            Source https://stackoverflow.com/questions/70352503


            react native typescript 'string' is not assignable to parameter of type 'never.' in useNavigation
            Asked 2022-Feb-15 at 17:51

            [I keep getting the error that says 'string' is not assignable to parameter of type 'never' in react native typescript and I don't know why. Can someone help me fix this bug.

            Thank you in advance.]1

            code snippet :



            Answered 2021-Oct-11 at 12:01

            The only solution I found is to apply the type never on the string name.

            Source https://stackoverflow.com/questions/68667766

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install TypeScript

            You can download it from GitHub.


            There are many ways to contribute to TypeScript. This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact opencode@microsoft.com with any additional questions or comments.
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