Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

Can't import all operators in NodeJS

See original GitHub issue

Hi!

I’m on NodeJS version 14, Mingo version 3.0.2

I bundle the app with Webpack version 5 (also tried with 4, same effect) and run it via nodemon (2.0.4).

I try to import all operators like that (bundle size is no problem for me):

import { OperatorType, useOperators } from 'mingo/core';
import * as pipelineOperators from 'mingo/operators/pipeline';
import * as projectionOperators from 'mingo/operators/projection';
import * as queryOperators from 'mingo/operators/query';
import * as expressionOperators from 'mingo/operators/expression';
import * as accumulatorOperators from 'mingo/operators/accumulator';

useOperators(OperatorType.PIPELINE, pipelineOperators);
useOperators(OperatorType.PROJECTION, projectionOperators);
useOperators(OperatorType.QUERY, queryOperators);
useOperators(OperatorType.EXPRESSION, expressionOperators);
useOperators(OperatorType.ACCUMULATOR, accumulatorOperators);

Some of the imports work, some (like in this example arithmetic) throw:

(function (exports, require, module, __filename, __dirname) { export * from './arithmetic';
                                                              ^^^^^^
SyntaxError: Unexpected token 'export'
    at new Script (vm.js:99:7)
    at createScript (vm.js:247:10)
    at Object.runInThisContext (vm.js:295:10)
    at wrapSafe (internal/modules/cjs/loader.js:1104:15)
    at Module._compile (internal/modules/cjs/loader.js:1164:27)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1220:10)
    at Module.load (internal/modules/cjs/loader.js:1049:32)
    at Function.Module._load (internal/modules/cjs/loader.js:937:14)
    at Module.require (internal/modules/cjs/loader.js:1089:19)
    at require (internal/modules/cjs/helpers.js:73:18)
[nodemon] app crashed - waiting for file changes before starting...

Other es6 imports work fine in my app. It also seem to have somehting to do with import ordering (which is weird)?

Any ideas?

Thanks!

Issue Analytics

State:
Created 3 years ago
Reactions:3
Comments:9 (7 by maintainers)

Top GitHub Comments

1reaction

stefanholzapfelcommented, Aug 7, 2020

Thanks, fixed with new version.

0reactions

kofrasacommented, Jul 16, 2020

I am unable to repro this but the latest version 3.0.3 removes the reliance on the esm module which is likely the root cause.

Closing this issue. Please reopen if the issue still persists after upgrade.

Top Results From Across the Web

Can't import multiple modules using 'import' - node.js

I'm trying to import classes from a .js file, but when I run the program it seems to have a Syntax error. Here's...

import - JavaScript - MDN Web Docs - Mozilla

You can import multiple names from the same module. ... The importing module can only read the value but can't re-assign it. ......

Documentation - Modules - TypeScript

Modules import one another using a module loader. At runtime the module loader is responsible for locating and executing all dependencies of a...

Everything you should know about 'module' & 'require' in Node.js

require keyword refers to a function which is used to import all the constructs exported using the module.exports object from another module. If ......

Async hooks | Node.js v19.3.0 Documentation

The specifics of all functions that can be passed to callbacks is in the Hook Callbacks section. import { createHook } from 'node:async_hooks'; ......