how to use the create function from the underscore library in typescript

To use the create function from the underscore library in TypeScript, we need to make sure that we have installed the library and we have included the library in our TypeScript file.

We can install the underscore library by running the following command in our terminal:

index.ts
npm install underscore
23 chars
2 lines

After installing the library, we can include it in our TypeScript file by importing it at the top of the file:

index.ts
import * as _ from 'underscore';
33 chars
2 lines

With the library imported, we can now use the create function. The create function is used to create a new object with the specified prototype object.

Here's an example usage of the create function in TypeScript:

index.ts
interface Person {
    name: string;
    age: number;
}

const personPrototype: Person = {
    name: '',
    age: 0
};

const person: Person = _.create(personPrototype);
person.name = 'John';
person.age = 30;
console.log(person); 
// Output: { name: 'John', age: 30 }
268 chars
16 lines

In the code above, we defined an interface Person and a personPrototype object that has the same interface as Person. We then used the create function to create a new person object using the personPrototype as the prototype object. Finally, we set the name and age properties of the person object and logged it to the console.

Note that we used generics in the definition of the create function to ensure that the returned object has the same type as the prototype object:

index.ts
create<T>(prototype: T): T;
28 chars
2 lines

gistlibby LogSnag