how to use the iteratee function from lodash in javascript

_.iteratee is a powerful utility function in lodash that helps create functions that can be used for various purposes, such as sorting, filtering, and more.

To use _.iteratee, simply pass a second argument to many lodash functions that accept an iteratee function. This argument can be either a function, a string, or an array.

Here's an example of using _.iteratee to sort an array of objects by a property:

index.tsx
const users = [
  { name: 'John', age: 25 },
  { name: 'Jane', age: 28 },
  { name: 'Bob', age: 22 },
];

const sortedUsers = _.sortBy(users, _.iteratee('age')); // sorts by age

console.log(sortedUsers);
/*
Output:
[
  { name: 'Bob', age: 22 },
  { name: 'John', age: 25 },
  { name: 'Jane', age: 28 },
]
*/
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In this example, _.iteratee('age') creates a function that returns the age property of an object. _.sortBy uses this iteratee to sort the users array by age.

You can also pass a custom function to _.iteratee. Here's an example of using a custom function to sort an array of strings by length:

index.tsx
const words = ['apple', 'banana', 'cherry', 'date'];

const sortedWords = _.sortBy(words, _.iteratee((word) => word.length)); // sorts by length

console.log(sortedWords);
/*
Output:
[
  'date',
  'apple',
  'cherry',
  'banana'
]
*/
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In this example, the iteratee function returns the length of each string in the words array, which is used to sort the array by string length.