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

To use the invokeMap function from the Lodash library in TypeScript, you can import it and provide type annotations for your arguments and return type. The invokeMap function takes an array or object and a method to invoke on each of its elements, returning an array of the results.

Here's an example of using invokeMap in TypeScript:

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

class MyClass {
  private _value: number;

  constructor(value: number) {
    this._value = value;
  }

  public get value(): number {
    return this._value;
  }

  public addToValue(amount: number): void {
    this._value += amount;
  }
}

const myObjects = [
  new MyClass(1),
  new MyClass(2),
  new MyClass(3),
];

// Type annotations for invokeMap
const results: number[] = _.invokeMap<MyClass, number>(myObjects, 'addToValue', 10);

console.log(results); // [11, 12, 13]
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In this example, we create an array of MyClass instances and call addToValue on each one, passing 10 as the argument. The invokeMap function returns an array of the resulting values, which are now 11, 12, and 13.

The type annotations provided for invokeMap specify the types of objects in the array (MyClass) and the return type of the invoked method (number). By specifying these types, we get the benefits of TypeScript's type checking and editor autocomplete features.