how to use the takewhile function from lodash in javascript

The takeWhile function in lodash is used to create an array with elements taken from another array until a certain condition is met. It takes two arguments: the array to iterate over, and the function that defines the condition.

Here's an example of using takeWhile to extract numbers from an array until a non-numeric element is encountered:

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

const arr = [1, 2, 3, 'a', 'b', 'c', 4, 5];
const result = _.takeWhile(arr, x => typeof x === 'number');

console.log(result); // Output: [1, 2, 3]
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In the example above, we import lodash using require, then define an array arr containing a mix of numbers and non-numeric values. We then call takeWhile and pass arr as the first argument and a function that checks if the element is a number as the second argument.

The resulting array will contain the first three elements of arr (i.e., [1, 2, 3]) because the condition in the function returns true for those elements, but false for the next element ('a').