NodeJS : Dynamic import modules-CodePudding

Is there any way in JS to import dynamically some modules ?

For example, this is my architecture :

| - index.js
| - modules
    | - SomeModule
        | - router.js
        | - controller.js
    | - SomeOtherModule
            | - SubModule
                | - router.js
                | - controller.js
        | - controller.js

My goal is to import all the router.js modules in the index.js file so I was thinking about something like this :

import fs from "fs"
import path from "path"


function scanDirForRouters (dirPath, name = "") {
    let routers = []
    const files = fs.readdirSync(dirPath)
    for(const file of files) {
        const isDirectory = fs.statSync(path.join(dirPath, file)).isDirectory()
        if(isDirectory) {
            routers = [...routers, ...scanDirForRouters(path.join(dirPath, file), name   file)]
        }
        else if(file === "router.js") {
            routers.push(`import ${name}Router from ${path.join(dirPath, file)}`)
        }
    }
    return routers
}

let allRouters = scanDirForRouters(path.join(path.dirname("."), "modules"))

So if I do a console.log(allRouters) it gives me :

[
  'import SomeModuleRouter from modules/SomeModule/Router.js',
  'import SomeOtherModuleSubModuleRouter from modules/SomeOtherModule/SubModule/Router.js'
]

So i wish there is a way to execute these command in my script now ... or maybe another way to do it?

Thanks a lot

CodePudding user response：

You could use require instead. I implemented it by replacing the routers.push line :

function scanDirForRouters (dirPath, name = "") {
    let routers = []
    const files = fs.readdirSync(dirPath)
    for(const file of files) {
        const isDirectory = fs.statSync(path.join(dirPath, file)).isDirectory()
        if(isDirectory) {
            routers = [...routers, ...scanDirForRouters(path.join(dirPath, file), name   file)]
        }
        else if(file === "router.js") {
            require(`${path.join(dirPath, file)}`)
        }
    }
    return routers
}

let allRouters = scanDirForRouters(path.join(path.dirname("."), "modules"))

CodePudding user response：

Thanks to @joprocoorp i found the answer using directly the import function in the loop.

This is my code :

import fs from "fs"
import path from "path"


async function scanDirForRouters (dirPath, name = "") {
    let routers = []
    const files = fs.readdirSync(dirPath)
    for(const file of files) {
        const isDirectory = fs.statSync(path.join(dirPath, file)).isDirectory()
        if(isDirectory) {
            routers = [...routers, ...(async scanDirForRouters(path.join(dirPath, file), name   file))]
        }
        else if(file === "router.js") {
            const router = await import(`./${path.join(dirPath, file)}`)
            routers.push(router)
        }
    }
    return routers
}

let allRouters = await scanDirForRouters(path.join(path.dirname("."), "modules"))

then I can make a loop on the routers and do whatever i want :)