modern-node-polyfills

A way to enable using Node native modules in non-node (Browser, Cloudflare, Deno,
...) environemnts with modern polyfills from JSPM.

Here are the modules that are supported in modern-node-polyfills.

Example

``ts
import { polyfillPath } from "modern-node-polyfills";

console.log(await polyfillPath("fs"))
// /home/bagher/project/@jspm/core/nodelibs/browser/fs.js
`

$3


This function returns the path of the requested module.
`ts
await polyfillPath("fs");
await polyfillPath("node:fs") // Modules can have the node prefix
`

$3

It returns the bundled content of a specific node module instead of a path.
`ts
console.log(await polyfillContent("fs"));
// the bundled source of fs
`

inject


This function tries to do the work of @rollup/plugin-inject plugin! but it also adds a new option called expressions which is for replacing javascript expressions like __filename.

`ts
console.log(await inject("console.log(__filename);", {
// replaces every global __filename with "/"
expressions: { __filename: "/" },
modules: {
// replaces every global Buffer with the imported Buffer from the polyfill buffer
Buffer: [await polyfillPath("buffer"), "Buffer"],
}
}))
// logs console.log("/")
`

polyfillGlobals


A way to polyfill all global node expressions, in this case, process,
Buffer, global, setImmediate, clearImmediate, __dirname and __filename. It's possible to customize the __filename and __dirname values in the second argument of this function.
`ts
console.log(await polyfillGlobals(
console.log(global);
console.log(process);
console.log(Buffer);
console.log(setImmediate);
console.log(clearImmediate);
))
// shows the polyfilled content
`
As a third argument, it's possible to change the path of those global polyfills or
even disable them using null.

`ts
const content = await polyfillGlobals(

console.log(global)
console.log(process);
console.log(Buffer);
console.log(setImmediate);
console.log(clearImmediate);
,
{},
{
process: "/here/process.js",
Buffer: null,
global: null,
setImmediate: null,
clearImmediate: null,
}
);
``

Contribution

Feel free to let me know what you need for this package or what issue you have,
I'd be happy!