Module [mojang-minecraft] not found. Native module error or file not found

Minecraft bedrock gametest framework gives an error "Module [mojang-minecraft] not found. Native module error or file not found" 

javascript file:  (this is just a test behavior pack)
import { world } from 'mojang-minecraft'

function GamemodeChanger() {
    world.events.beforeChat.subscribe((eventData) => {
        var Player = eventData.sender.name
        switch (eventData.message) {
            case '!gmc':                                
                world.getDimension('overworld').runCommand(`gamemode creative ${Player}`)
            eventData.cancel = true
            break;
            case '!gms':
                world.getDimension('overworld').runCommand(`gamemode survival ${Player}`)
            eventData.cancel = true
            break;
        }
    })
  }
 
 GamemodeChanger()