How to use npm module in DENO?

In Deno, using npm modules is not directly supported because Deno does not rely on Node.js's npm package manager. Deno uses URLs for module imports and features its own independent standard library and third-party module system. However, you can still use npm modules through several methods; here are a few approaches:

1. Using esm.sh or skypack.dev

These services convert npm packages into ES modules, enabling direct usage in Deno. For example, to use the npm module lodash in Deno, you can leverage esm.sh:

javascript
import lodash from 'https://esm.sh/lodash';

console.log(lodash.shuffle([1, 2, 3, 4]));

This method is straightforward; simply append the npm module name to the URL.

2. Using denoify

denoify is a tool that converts Node.js modules into Deno-compatible modules. This requires you to have control over the module or the maintainer has provided Deno support. To use denoify, clone the npm module's source code and run denoify to generate a Deno-compatible module.

3. Manually Modifying npm Modules

If automation tools are unsuitable for specific npm modules, you may need to manually adjust the code to run in the Deno environment. This involves modifying import/export declarations and replacing Node.js-specific APIs with Deno's equivalents.

Summary:

Although Deno does not natively support npm, you can still use most npm modules in Deno projects via tools like esm.sh, skypack.dev, and denoify. Note that conversions may not be perfect, especially for npm packages relying on Node.js core modules, which might require additional effort to achieve full compatibility.