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This repository has been archived by the owner on Mar 25, 2018. It is now read-only.
I am coming from java and maven world and after using npm and node in multi-module project, i think a lot of improvement could be done with module resolution allowing better work with local modules:
Could node have a parameter (let suppose --module_resolution is this command line option ) to be able to provided a file with mapping between module name and path into the filesystem (like the NODE_PATH variable) ?
This file could be a map like
{"moduleA" : {"path" : "/path/to/moduleA/version/1.0.0","resolve" : {"moduleA" : {"path" : "/path/to/moduleB/version/2.0.0","resolve" : { ... ansoon...}}}},"moduleB" : {"path" : "/path/to/moduleB/version/1.0.0","resolve" : { ... ansoon...}}}//This map will look a lot like npm-shrinkwrap.json file but with local path instead of url//I will suppose this file is named module-resolution.json
require("moduleA") will resolve to "/path/to/moduleA/version/1.0.0"
require("moduleB") will resolve to "/path/to/moduleB/version/1.0.0"
but in moduleA :
require("moduleB") will resolve to "/path/to/moduleB/version/2.0.0"
Avantages:
allow the same flexibility than nested node_modules folders (multiple version of the same module name, each module being able to import the choosen version)
optimize module resolution because there no more need to iterate going up the filesystem tree to find a node-module folder containing the module
all modules and version can be installed in one local repository (like npm-cache but with exploded tgz)
no need for linking global modules into local node_module folder
no need to fetch and install the same dependencies multiple time for multiple modules with the same dependency
no more need for linking folders for local dev with multiple modules
no need for npm-dedupe
This file could be generated by modules managers like npm or bower.
Differents modules managers can handle multiple versions differently easily (if a module manager want to only allow one version of a module to be used, it just have to modify this map)
This file could be agnostic of the resolution of the js file from the module name so externals tools could use this file for require resolution:
algorithme like looking for main field in /resolved/path/from/the/map/package.json for node or webpack
or looking for typing field in /resolved/path/from/the/map/package.json for typescript compiler
can be let to the executor discretion.
The text was updated successfully, but these errors were encountered:
Posted on nodejs/node#4584
I am coming from java and maven world and after using npm and node in multi-module project, i think a lot of improvement could be done with module resolution allowing better work with local modules:
Could node have a parameter (let suppose --module_resolution is this command line option ) to be able to provided a file with mapping between module name and path into the filesystem (like the NODE_PATH variable) ?
This file could be a map like
so running
will have this effect:
Avantages:
This file could be generated by modules managers like npm or bower.
Differents modules managers can handle multiple versions differently easily (if a module manager want to only allow one version of a module to be used, it just have to modify this map)
This file could be agnostic of the resolution of the js file from the module name so externals tools could use this file for require resolution:
algorithme like
looking for main field in /resolved/path/from/the/map/package.json
for node or webpackor
looking for typing field in /resolved/path/from/the/map/package.json
for typescript compilercan be let to the executor discretion.
The text was updated successfully, but these errors were encountered: