rosnodejs.initNode is not a function

[Min Hyeok]

I am currently using ROS Noetic and trying to set up a simple control web server using Node.js version 16. However, I am encountering the following error with the rosnodejs library that I have been using successfully.

Even when I try to demonstrate with the example code provided, I still encounter the same error. I have tried uninstalling and reinstalling the node module, but the issue persists. What could be the problem?

const rosnodejs = require('rosnodejs');
rosnodejs.initNode('/my_node')
.then(() => {
  // do stuff
});

>on console
rosnodejs.initNode('/my_node')
          ^

TypeError: rosnodejs.initNode is not a function
    at Object.<anonymous> (/home/ME/Desktop/ros-web-server/test.js:2:11)
    at Module._compile (node:internal/modules/cjs/loader:1198:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1252:10)
    at Module.load (node:internal/modules/cjs/loader:1076:32)
    at Function.Module._load (node:internal/modules/cjs/loader:911:12)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:81:12)
    at node:internal/main/run_main_module:22:47

``` `

[Christian Fritz]

That's bizarre. Can you console.log(rosodejs) and post the result here? Also, please post the result of npm ls rosnodejs in the project folder.

[Min Hyeok]

That's bizarre. Can you console.log(rosodejs) and post the result here? Also, please post the result of npm ls rosnodejs in the project folder.

ok.

const rosnodejs = require('rosnodejs');
console.log(rosnodejs) 

=> { node: [Function: node], types: [Function (anonymous)] }

and npm ls rosnodejs

=> ros-web-server@1.0.0 /#MyPath#/ros-web-server
└── rosnodejs@0.1.1

thx for reply.

[Christian Fritz]

Your rosnodejs version is ancient! The current version is 3.0.2. You must be doing something wrong when installing it. Try forcing it using npm i rosnodejs@latest.