SyntaxError: Cannot use import statement outside a module

[kroggen]

I am getting this error:

import { AergoClient, GrpcProvider } from '@herajs/client';
^^^^^^

SyntaxError: Cannot use import statement outside a module
    at Object.compileFunction (node:vm:352:18)
    at wrapSafe (node:internal/modules/cjs/loader:1031:15)
    at Module._compile (node:internal/modules/cjs/loader:1065:27)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1153:10)
    at Module.load (node:internal/modules/cjs/loader:981:32)
    at Function.Module._load (node:internal/modules/cjs/loader:822:12)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:81:12)
    at node:internal/main/run_main_module:17:47

when running a simple script:

import { AergoClient, GrpcProvider } from '@herajs/client';

const aergo = new AergoClient({}, new GrpcProvider({url: 'testnet-api.aergo.io:7845'}));

async function update() {
    const blockchainState = await aergo.blockchain();
    console.log(blockchainState.bestHeight, blockchainState.bestBlockHash);
    setTimeout(update, 3000);
}
update();

The same error with node 14 and 16, tested on Mac

[kroggen]

I was able to make it work by using require(), like this:

var client = require('@herajs/client');

const aergo = new client.AergoClient({}, new client.GrpcProvider({url: 'testnet-api.aergo.io:7845'}));

It would be good to have this on the documentation

[graup]

That's not really an issue with this code but with your code's configuration. To use ES modules, you need to enable it in your package.json or use a bundler to transpile it.