Author: John Au-Yeung

Sometimes, we want to set window.location with TypeScript.

in this article, we’ll look at how to set window.location with TypeScript.

How to set window.location with TypeScript?

To set window.location with TypeScript, we can set the window.location.href property to the URL path we want to go to.

For instance, we write

window.location.href = "/url";

to navigate to the /url URL by setting window.location.href to the URL string.

Conclusion

To set window.location with TypeScript, we can set the window.location.href property to the URL path we want to go to.

Sometimes, we want to declare and import TypeScript interfaces in a separate file.

In this article, we’ll look at how to declare and import TypeScript interfaces in a separate file.

How to declare and import TypeScript interfaces in a separate file?

To declare and import TypeScript interfaces in a separate file, we can use the export keyword to export interfaces.

For instance, we write

export interface ISampleInterface {
  key: string;
  value: string;
}

to export the ISampleInterface interface with export.

Then we can import it by writing

import { ISampleInterface } from "./ISampleInterface";
let sampleVar: ISampleInterface;

to import the ISampleInterface member from ./ISampleInterface.

And then we use that as a type for the sampleVar variable.

Conclusion

To declare and import TypeScript interfaces in a separate file, we can use the export keyword to export interfaces.

Sometimes, we want to fix the "Cannot find module ‘fs’" error with TypeScript.

In this article, we’ll look at how to fix the "Cannot find module ‘fs’" error with TypeScript.

How to fix the "Cannot find module ‘fs’" error with TypeScript?

To fix the "Cannot find module ‘fs’" error with TypeScript, we can install the @types/node package into our Node TypeScript project.

To do this, we run

npm install --save-dev @types/node

to install @types/node as a dev dependency.

This will add the type definitions for the built-in Node modules into our project so that the "Cannot find module ‘fs’" error will go away.

Conclusion

To fix the "Cannot find module ‘fs’" error with TypeScript, we can install the @types/node package into our Node TypeScript project.

Sometimes, we want to fix the ‘Index signature is missing in type’ error with TypeScript.

In this article, we’ll look at how to fix the ‘Index signature is missing in type’ error with TypeScript.

How to fix the ‘Index signature is missing in type’ error with TypeScript?

To fix the ‘Index signature is missing in type’ error with TypeScript, we can add an index signature to the interface causing the error.

For instance, we write

interface MyInterface {
  [key: string]: string;
  myVal: string;
}

to add [key: string]: string; to MyInterface.

This will let us add any property to the object with type MyInterface with a string key and value.

Conclusion

To fix the ‘Index signature is missing in type’ error with TypeScript, we can add an index signature to the interface causing the error.

Sometimes, we want to format a datetime in TypeScript.

In this article, we’ll look at how to format a datetime in TypeScript.

How to format a datetime in TypeScript?

To format a datetime in TypeScript, we can use the date’s toLocaleString method.

For instance, we write

new Date().toLocaleString();

to call toLocaleString on a Date instance to return a human readable datetime string.

Conclusion

To format a datetime in TypeScript, we can use the date’s toLocaleString method.