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

To use the every function from the Lodash library in TypeScript, you can install the Lodash library and its type definitions by running the following command in your project directory:

npm install --save lodash @types/lodash
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Then, you can import the every function from the Lodash library and use it in your TypeScript code like this:

index.ts
import { every } from 'lodash';

const isPositive = (num: number) => num > 0;

const nums = [1, 2, 3, 4, 5];
const allPositive = every(nums, isPositive);

console.log(allPositive); // Output: true
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In the code above, we imported the every function from the Lodash library and used it to check if all numbers in the nums array are positive. We passed a callback function isPositive to the every function to define the condition for each element. Finally, we logged the result to the console.

Note that we also imported the type definitions for Lodash by installing @types/lodash and used TypeScript type annotations to ensure that the isPositive function takes a number as an argument and returns a boolean. This helps TypeScript provide better type checking and improves the overall quality of the code.