how to use the meanby function from lodash in javascript

The meanBy function from the Lodash library allows you to calculate the mean of an array of objects based on a specific property. Here is an example of how to use it:

index.tsx
const _ = require('lodash');

const data = [
  { name: 'Alice', age: 25 },
  { name: 'Bob', age: 30 },
  { name: 'Charlie', age: 35 }
];

const ageMean = _.meanBy(data, 'age');

console.log(ageMean); // Output: 30
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In this example, we have an array of objects representing people with their name and age. We use the _.meanBy function to calculate the mean age of all individuals in the array. The function takes two arguments: the array to process, and a string representing the property to use for the calculation (in this case the 'age' property). The result is stored in the ageMean variable, which is then displayed using console.log.

Note that in order to use the meanBy function, we must first import the Lodash library using const _ = require('lodash');.