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

To use the forIn function from the lodash library in TypeScript, you need to first install the lodash library using a package manager such as npm or yarn. Below is an example of how to install lodash using npm:

index.ts
npm install lodash --save
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Once you have installed lodash, you can import the forIn function from the library and use it in your TypeScript code:

index.ts
import * as _ from 'lodash';

const obj = { a: 1, b: 2, c: 3 };

_.forIn(obj, (value, key) => {
  console.log(key, value);
});
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In the above code, we imported the forIn function from lodash using the import statement. Then, we created an object obj and passed it to the forIn function along with a callback function that will be executed for each key-value pair in the object. The callback function takes two arguments - the value of the current key-value pair and the key of the current key-value pair.

Inside the callback function, we simply logged the key and value to the console. However, you can perform any logic inside the callback function based on your requirements.

By using the forIn function, we were able to iterate over all the key-value pairs in the object obj.