Am I missing something, or is the content here too minimal?
For this to be genuinely useful, I’d expect at least a few code examples—and ideally a link to a working repo to show it in action.
sbjs · 9h ago
Just added some code samples, thanks for the suggestion.
devrandoom · 8h ago
It's hard to get the idea down from one's head into a document, as this text shows.
sbjs · 8h ago
Just updated the text to be hopefully much clearer.
noob_07 · 12h ago
I do not follow, can anyone help with more code/config examples of how to leverage this?
shakna · 11h ago
One example from the site:
import module from 'node:module'
const tree = new FileTree('site', import.meta.url)
module.registerHooks(hooks.useTree(tree))
import('site/myfile.js')
Here, site/myfile.js doesn't exist. It gets created as a reference by the FileTree library. Node thinks it is importing it. The import is also automatically reloaded, if the backend changes it. Caches are invalidated and objects replaced.
sbjs · 8h ago
Oh no, I must have mis-explained it.
The file `site/myfile.js` does exist. All FileTree does is recursively load all files in a dir into memory.
The `useTree` module hook does two things:
* Pulls the file from memory when loading it instead of from disk
* Adds a cache busting query string when resolving it for invalidation
Combined with tree.watch(), this essentially allows you to add a very lightweight but extremely accurate hot module replacement system into Node.js
const tree = new FileTree('src', import.meta.url)
registerHooks(useTree(tree))
tree.watch().on('filesUpdated', () => import(tree.root + '/myfile.js'))
import(tree.root + '/myfile.js')
Now save src/myfile.js and see it re-executed
whizzter · 8h ago
With Typescript you could(prob still can) specify how JSX tags are translated, so you can get the regular data structure without React dependency.
sbjs · 8h ago
That's orthogonal, and in fact you probably would use TypeScript to translate JSX to JS when using this library. What this does is (a) provide a Node.js module hook to call your transpile function when it encounters TSX/JSX files, and (b) provide a Node.js module that lets you remap imports, including "react/jsx-runtime" if you want a different JSX implementation.
feisuzhu · 13h ago
(ab)?using ?
kaeruct · 13h ago
Using. But also maybe abusing.
carlosneves · 10h ago
I think he's proposing a fix for the regex in the title.
/(ab?)using/ matches:
- ausing
- abusing
while /(ab)?using/ matches:
- using
- abusing
sbjs · 8h ago
It's English, it just looks like regex. In English, the ? belongs inside the parens in this case.
vermilingua · 7h ago
This is a reinvention of HMR, no?
sbjs · 7h ago
It's a highly optimized and extremely simple yet robust implementation of it, sure. Is that reason to dismiss it?
Consider Vite's node-side HMR implementation. It creates its own module system on top of Node's native module system, using `node:vm`. So its modules are really second class citizens that have to be glued to the native module system.
This library used to do that, but moved to using Node's native module hooks, so that there's nothing magical going on, and you can still use the `import` expression to import your HMR modules, they just auto-update when saving.
For this to be genuinely useful, I’d expect at least a few code examples—and ideally a link to a working repo to show it in action.
The file `site/myfile.js` does exist. All FileTree does is recursively load all files in a dir into memory.
The `useTree` module hook does two things:
* Pulls the file from memory when loading it instead of from disk
* Adds a cache busting query string when resolving it for invalidation
Combined with tree.watch(), this essentially allows you to add a very lightweight but extremely accurate hot module replacement system into Node.js
Now save src/myfile.js and see it re-executed/(ab?)using/ matches:
- ausing
- abusing
while /(ab)?using/ matches:
- using
- abusing
Consider Vite's node-side HMR implementation. It creates its own module system on top of Node's native module system, using `node:vm`. So its modules are really second class citizens that have to be glued to the native module system.
This library used to do that, but moved to using Node's native module hooks, so that there's nothing magical going on, and you can still use the `import` expression to import your HMR modules, they just auto-update when saving.