Importing node.js module - SyntaxError: Unexpected

问题:

I'm trying to do the following import

import  ResClient from 'resclient';

Result

/home/arran/WebstormProjects/untitled1/app.js:2
import  ResClient from 'resclient';
        ^^^^^^^^^

SyntaxError: Unexpected identifier
    at new Script (vm.js:85:7)
    at createScript (vm.js:266:10)
    at Object.runInThisContext (vm.js:314:10)
    at Module._compile (internal/modules/cjs/loader.js:698:28)
    at Object.Module._extensions..js 
(internal/modules/cjs/loader.js:749:10)
    at Module.load (internal/modules/cjs/loader.js:630:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:570:12)
    at Function.Module._load (internal/modules/cjs/loader.js:562:3)
    at Function.Module.runMain (internal/modules/cjs/loader.js:801:12)

• The module documentation is located here and does the exact same import in the example.

• I have installed the module globally.

  npm list -g | grep resclient
  └─┬ resclient@2.0.2
  

• I am using the following node version

   $node -v
   v11.10.1
  

I have seen some other posts about this error. For example here but it is a browser based problem using client side javascript rather than node. I'm a node newbie, so would appreciate any pointers no matter how basic.

回答1:

As for node 12, you can add the property type in your package.json as

"type": "module"

and dont forget to run node with experimental-modules flag node --experimental-modules youapp.js

回答2:

I was also facing the same issue. Here is how I fixed it.

I first updated my node and its package manager version using the following commands :

npm install node@latest -g

and

npm install npm@latest -g

After doing so, I went to my package.json file and added the following line before the scripts property:

"type": "module",

And last, I went back and tried to run my code using node app.js but it did not work until I used the following command:

node --experimental-modules app.js

At your side, replace app.js with your index file. Hope it also works for you

Nice coding