Use the npm ls typescript command to check which version of typescript is installed locally in your project. If you need to check the globally installed version of typescript, use the npm ls -g typescript command. Make sure to open your terminal in your project's root directory (where yo...
I am writing an internal tool which compares the version installed in a project and only allow certain version to be passed. For that I have to check the version which is resolved in the yarn.lock file, as package.json file has a semver range, not specific version and it doesn...
In Typescript, we have three ways to work with it using: typeof: the keyword helps to check value types, like boolean, string, number, etc. instanceof: the keyword to compare the object instance with a class constructor. type guards: The powerful way to check types using typescript featu...
tsc -v // prints out the locally installed typescript version Furthermore you can check, which is the latest available version for typescript in the npm registry: npm view typescript version // prints the latest available version in the npm registry Share Follow edited Mar 3, 2020 at ...
3. Using TypeScript Type Guards You can also leverage Typescript type guards to check if a date is valid in Typescript. function isDate(object: any): object is Date { return object instanceof Date && !isNaN(object.getTime());
Check it out Editor’s note: This guide to using TypeScript with React was last updated on 16 October 2023 to reflect changes since the release of TypeScript 5. In this comprehensive tutorial, we’ll dive into the intricacies of using TypeScript in React projects. We’ll explore the rati...
Your development environment should have Node.js installed because we're going to use npm or yarn for handling our packages. This requirement is a given since you're working with React, but no harm in making sure, right? # Check if Node is installed node --version # Check if npm is in...
$ tsc --version Version 2.0.3 Therefore, with TypeScript installed, the next step is to write some TypeScript code. Modules The starting point for the discussion is that of TypeScript modules. Presume that I create a file, person.ts, that’s to contain a componen...
Check it out Editor’s Note: This article was updated on 22 June 2023 to include information about debugging Type-Script mobile apps, including React Native and NativeScript. A software bug is a programming error or the unexpected behavior of a software program. Debugging refers to the process...
But if you can’t update your Node.js version yet, then installing the build tools manually should help you fix this error. Conclusion Thenpm installcommand may fail to work because of many reasons. When the command doesn’t work,you need to check the output first and see what specific ...