Is it possible, given a loaded module, to get its file path?
const MyModule = require('./MyModule');
const MyOtherModule = require('../otherfolder/MyOtherModule');
function print(){
console.log(thisIsThePathTo(MyModule)); <--- Should print the absolute path of the loaded module
console.log(thisIsThePathTo(MyOtherModule)); <--- Should print the absolute path of the loaded module
}
I saw require.resolve but I need the opposite lookup... Any ideas?
Thanks!
The documentation for require.main describes the module object.
The module has an id and a path, however those are not exported. You can add those properties to the module.exports object to export them. Then, in a separate module, you can access them via MyOtherModule.id or MyOtherModule.path
For example,
In MyOtherModule/index.js:
myOtherModuleFunction = function() {
console.log('This is module 2')
}
module.exports = {
// spread all properties in module.exports
...module,
// then add the exports
exports: myOtherModuleFunction
}
and in MyModule/MyModule.js,
module.exports = {
...module,
exports: { someFunction: () => console.log('MyModule') }
}
and in MyModule/index.js:
const MyModule = require('./MyModule');
const MyOtherModule = require('../../MyOtherModule/');
function thisIsThePathTo(module) {
return module.path
}
function print(){
console.log(thisIsThePathTo(MyModule))
console.log(thisIsThePathTo(MyOtherModule))
}
print()
Running node src/MyModule/index.js outputs:
/.../stackoverflow/62043302/src/MyModule/
/.../stackoverflow/62043302/src/MyOtherModule
And if you print module.id instead of module.path, you'll get:
/.../stackoverflow/62043302/src/MyModule/index.js
/.../stackoverflow/62043302/src/MyOtherModule/index.js
However, spreading all properties includes module.children and module.parent, and you'll also have to use module.exports when accessing the so you probably only want to include id or path, like so:
myOtherModuleFunction = function() {
console.log('This is module 2')
}
const { id, path } = module
module.exports = {
id,
path,
myOtherModuleFunction,
}```
and require like so:
```js
const {id: otherModuleId, myOtherModuleFunction } = require('MyOtherModule')
This can get messy. If you're importing modules you did not author, you will not have the option to lookup the id or path (unless the authors added it to module.exports).
