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

To use the unary function from the Lodash library in TypeScript, you first need to install Lodash using NPM:

index.ts
npm install lodash
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Next, you can import the unary function from Lodash and use it in your TypeScript code:

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

const parseArguments = (args: string[]) => args.map(Number);
const parseSingleArgument = unary(parseArguments);

console.log(parseSingleArgument('5')); // Output: [5]
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In this example, we define a parseArguments function that takes an array of strings and parses each string into a number using the map function. However, if we want to parse a single argument passed as a string, we can use the unary function to create a new function that takes only one argument and calls the parseArguments function with an array containing that argument.

Finally, we call the new function parseSingleArgument with the string '5' and get the expected output of an array containing the number 5.