In TypeScript, you can import external code libraries to use in your own programs. This is done using the import statement.
For example, to import the lodash library, you would write:
import * as _ from 'lodash';
The * as syntax imports all of the library's exported functionality into a single variable called _.
You can also selectively import specific functions or components from a library using the destructuring syntax. For example, to import only the debounce function from the lodash library, you would write:
import {debounce} from 'lodash';
This syntax only imports the debounce function from the lodash library and assigns it to a variable with the same name.
If the library has a default export, you can import it using the default keyword. For example, to import the default export from the react library, you would write:
import React from 'react';
This syntax imports the default export from the react library and assigns it to a variable called React.
You can also combine these different import syntaxes as needed. For example, to import both the React default export and the useState function from the react library, you would write:
import React, {useState} from 'react';