Choose one: is this a bug report or feature request? (docs?) bug report
I'm trying to use a package that assumes that the external-helpers are available as a global. From the docs, I should be able to inject them to global in my node app by using require("babel-core").buildExternalHelpers();. However, use of that still results in the following error: ReferenceError: babelHelpers is not defined
Babel/Babylon Configuration (.babelrc, package.json, cli command)
Since the buildExternalHelpers() function needs to run before the package is imported and my app uses es module imports, I'm using a bootstrap file as an entry point that is ignored from transpilation and just tries to inject the helpers before loading the actual app:
require("babel-core").buildExternalHelpers();
const app = require('./app');
Expected Behavior
babelHelpers should be added to global so that it is available for the package that assumes it is available there.
from the docs:
This injects the external helpers into global.
Current Behavior
babelHelpers is not made available on global, resulting in ReferenceError: babelHelpers is not defined
Possible Solution
The docs also mention generating a helpers file with ./node_modules/.bin/babel-external-helpers [options] > helpers.js. It wasn't obvious to me that this file could be imported to accomplish the same goal as buildExternalHelpers() until I started reading the source of that file. Importing that file instead does work for my app. I'll need this file elsewhere, so I'll likely just continue importing that instead, even if there is a way to use buildExternalHelpers().
With that approach, my bootstrap file has the following contents instead:
require('../../vendor/babel-helpers');
const app = require('./app');
Your Environment
| software |
version(s) |
| Babel |
6.26.0 |
| node |
8.9.4 |
| npm |
5.6.0 |
| Operating System |
macOS High Sierra |
Forum
While I was still trying to find a working solution, I was trying to find the best place to ask questions. The website still links to a discourse forum that no longer seems to exist. It'd be a good idea to either remove the link from the site or at least have it link to somewhere that describes the currently recommended approach for getting that type of help.
Choose one: is this a bug report or feature request? (docs?) bug report
I'm trying to use a package that assumes that the external-helpers are available as a global. From the docs, I should be able to inject them to
globalin my node app by usingrequire("babel-core").buildExternalHelpers();. However, use of that still results in the following error:ReferenceError: babelHelpers is not definedBabel/Babylon Configuration (.babelrc, package.json, cli command)
Since the
buildExternalHelpers()function needs to run before the package is imported and my app uses es module imports, I'm using a bootstrap file as an entry point that is ignored from transpilation and just tries to inject the helpers before loading the actual app:Expected Behavior
babelHelpersshould be added toglobalso that it is available for the package that assumes it is available there.from the docs:
Current Behavior
babelHelpersis not made available onglobal, resulting inReferenceError: babelHelpers is not definedPossible Solution
The docs also mention generating a helpers file with
./node_modules/.bin/babel-external-helpers [options] > helpers.js. It wasn't obvious to me that this file could be imported to accomplish the same goal asbuildExternalHelpers()until I started reading the source of that file. Importing that file instead does work for my app. I'll need this file elsewhere, so I'll likely just continue importing that instead, even if there is a way to usebuildExternalHelpers().With that approach, my bootstrap file has the following contents instead:
Your Environment
Forum
While I was still trying to find a working solution, I was trying to find the best place to ask questions. The website still links to a discourse forum that no longer seems to exist. It'd be a good idea to either remove the link from the site or at least have it link to somewhere that describes the currently recommended approach for getting that type of help.