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

To use the size function from the lodash library in TypeScript, you can install lodash using npm or yarn.

index.ts
npm install lodash
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Then import the size function into your TypeScript file and use it as follows:

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

// Example usage
const fruits = ['banana', 'apple', 'pear'];
const sizeOfFruits = size(fruits); // Returns 3

console.log(sizeOfFruits); // Output: 3
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Type annotations are not required because size function is already typed in the lodash library. However, if you want to add type annotations for clarity, you can do so as follows:

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

// Example usage with type annotations
const fruits: string[] = ['banana', 'apple', 'pear'];
const sizeOfFruits: number = size(fruits); // Returns 3

console.log(sizeOfFruits); // Output: 3
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In this example, fruits is an array of strings, and sizeOfFruits is a number representing the number of elements in the fruits array. Note that size function returns a number, so we are explicitly setting the type of sizeOfFruits to number.