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

To use the each function from the lodash library in TypeScript, you will need to install the lodash library by running the following command:

index.ts
npm install lodash
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Once you have installed the lodash library, you can use the each function in your TypeScript code as follows:

index.ts
import * as _ from 'lodash';

interface Person {
    name: string;
    age: number;
}

const people: Person[] = [
    { name: 'Alice', age: 30 },
    { name: 'Bob', age: 40 },
    { name: 'Charlie', age: 50 }
];

_.each(people, (person: Person) => {
    console.log(`${person.name} is ${person.age} years old`);
});
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In the above code, we first import the lodash library using the * as _ syntax. This allows us to use any function from the lodash library by prefixing it with an underscore (_) character.

We then define an interface called Person that describes the structure of our data. We create an array of Person objects called people, and we pass this array to the each function.

The each function takes two arguments: the first argument is the array of items to iterate over, and the second argument is a callback function that will be called for each item in the array. The callback function takes one argument, which is the current item being iterated over.

Inside the callback function, we simply log a message to the console that displays the name and age of the current person.

Note that we have used a generic type argument with the each function to specify that the array contains objects of type Person. This helps TypeScript to perform type checking and ensure that our code is always working with the correct types of data.