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

To use the lastIndexOf function from the lodash library in TypeScript, you can follow these steps:

  1. Install the lodash library using npm. You can do this by running the following command in your terminal:
npm install --save lodash
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  1. Import the lastIndexOf function from the lodash library in your TypeScript file:
index.ts
import { lastIndexOf } from 'lodash';
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  1. Use the lastIndexOf function to find the index of the last occurrence of a value in an array or string. Here are some examples:
index.ts
// Find the index of the last occurrence of a string in a string
const str = 'hello world';
const lastIndex1 = lastIndexOf(str, 'l');
console.log(lastIndex1); // Outputs: 9

// Find the index of the last occurrence of a string in an array of strings
const arr = ['hello', 'world', 'foo', 'bar'];
const lastIndex2 = lastIndexOf(arr, 'foo');
console.log(lastIndex2); // Outputs: 2

// Find the index of the last occurrence of a number in an array of numbers
const nums = [1, 2, 3, 4, 2, 5];
const lastIndex3 = lastIndexOf(nums, 2);
console.log(lastIndex3); // Outputs: 4
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Note that the lastIndexOf function returns -1 if the value is not found in the array or string.

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