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

npm install lodash
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index.ts
import { functionsIn } from 'lodash';
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index.ts
class MyClass {
  prop: string;
  
  constructor() {
    this.prop = 'hello world';
  }
  
  myMethod() {
    console.log(this.prop);
  }
}

const myObj = new MyClass();

const funcNames = functionsIn(myObj);

console.log(funcNames); // output: ['myMethod', 'constructor', 'toString', 'valueOf', 'toLocaleString', 'hasOwnProperty', ... ]
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index.ts
// install type definitions
npm install --save-dev @types/lodash

// import type definitions
import { FunctionsIn } from 'lodash';

// use type definitions
const funcNames: FunctionsIn<MyClass> = functionsIn(myObj);
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