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

To use the replace function from the lodash library in TypeScript, follow the steps below:

1. Install the lodash library using npm or yarn, if it is not already installed.

index.ts
npm install lodash
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index.ts
yarn add lodash
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2. Import the replace function from the lodash library in your TypeScript file.

index.ts
import { replace } from 'lodash';
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3. Use the replace function to replace a substring in a string with another substring.

index.ts
const originalString: string = 'The quick brown fox jumps over the lazy dog';
const newString: string = replace(originalString, 'brown', 'red');
console.log(newString); // The quick red fox jumps over the lazy dog
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The above code replaces the substring 'brown' in the originalString with the substring 'red' using the replace function from the lodash library.

Note: The \ character before the $ sign in a replacement string is required in order to correctly interpolate the matched substring. For example:

index.ts
const originalString: string = 'The quick brown fox jumps over the lazy dog';
const newString: string = replace(originalString, /(\w+)\s(\w+)/, '$2 $1');
console.log(newString); // quick The brown fox jumps over the lazy dog
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This code swaps the first two words in originalString, using a regular expression and the replace function. Without the \ character, the result would be: 2 1 quick The brown fox jumps over the lazy dog instead.