how to use the tofinite function from the lodash library in typescript

To use the toFinite function from the Lodash library in TypeScript, you need to install both Lodash and its TypeScript definitions. You can do this by running the following command:

index.ts
npm install lodash @types/lodash
33 chars
2 lines

Once you have installed the dependencies, you can import the toFinite function and use it in your code:

index.ts
import { toFinite } from 'lodash';

function calculateTotal(value: number | string) {
  const numberValue: number = toFinite(value);
  // `numberValue` is guaranteed to be a finite number or `0`.
  return 10 * numberValue;
}
225 chars
8 lines

The toFinite function converts the given value to a finite number, or 0 if it cannot be converted to a number. By using the toFinite function, you can ensure that the input value is always a number, which allows you to perform arithmetic operations with type safety.