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

You can use the defaultsDeep function from lodash library in typescript as follows:

1. First, you need to install the lodash library and its types by running the following command:

index.ts
npm install lodash @types/lodash
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2. Next, import the defaultsDeep function from the lodash library as follows:

index.ts
import { defaultsDeep } from "lodash";
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3. After that, you can use the defaultsDeep function to merge default values into an object as follows:

index.ts
const object = { 'a': { 'b': 2 } };
const source = { 'a': { 'b': 1, 'c': 3 } };

const result = defaultsDeep(object, source);
console.log(result);
// Output: { 'a': { 'b': 2, 'c': 3 } }
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In the above code, we have merged the source object into the object object using the defaultsDeep function.

Note: The defaultsDeep function recursively merges objects to create a new object, so it does not modify any of the objects passed to it.