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

To use the pick function from the lodash library in a TypeScript project, you first need to install lodash as a dependency:

npm install --save lodash
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Next, you can import the pick function into your TypeScript module:

index.ts
import { pick } from 'lodash';
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The pick function takes two arguments: an object and an array of strings representing the keys to pick from the object. Here's an example usage:

index.ts
const sourceObj = { id: 1, name: 'John Doe', age: 30 };
const pickedObj = pick(sourceObj, ['id', 'name']);
console.log(pickedObj); // { id: 1, name: 'John Doe' }
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Note that in order to preserve type safety, you may want to use generics to specify the types of the source object and picked object:

index.ts
function pickFromObject<T, K extends keyof T>(sourceObj: T, keys: K[]): Pick<T, K> {
  return pick(sourceObj, keys);
}
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Here, the T type parameter represents the type of the source object, while the K type parameter represents the union of valid keys for that object. The Pick type then returns a new type consisting of only the properties specified by K. You can then use this function like so:

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

const sourcePerson: Person = { id: 1, name: 'John Doe', age: 30 };
const pickedPerson = pickFromObject(sourcePerson, ['id', 'name']);
console.log(pickedPerson); // { id: 1, name: 'John Doe' }
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Finally, if you're using TypeScript with lodash, you may want to install the @types/lodash package to get type definitions for lodash functions. This package includes type definitions for pick among other lodash functions.

npm install --save-dev @types/lodash
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