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

To use the isError function from the Lodash library in TypeScript, you first need to install the library by running the command npm install lodash in your project directory.

Once you have installed Lodash, you can import the isError function from the library and use it in your TypeScript code. Here's an example:

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

function handleResult(result: unknown) {
  if (isError(result)) {
    // Handle the error
  } else {
    // Handle the success case
  }
}
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In this example, we define a function handleResult that takes an argument result of type unknown. We use the isError function from Lodash to determine whether the result is an error or not. If it is an error, we can handle the error appropriately. If it is not an error, we can handle the success case.

Note that in this example, we have not annotated the type of the result argument. This is because the isError function accepts any argument and returns a boolean, so TypeScript's type inference is sufficient to determine the type of result. However, if you want to be more explicit, you could annotate the type of result as unknown or any.

Overall, using the isError function from the Lodash library in TypeScript is pretty straightforward, and can help make your error handling code more robust and easy to manage.