Mocha and Babel 7 register not found

[gear4s]

Bug Report

Current Behavior
Mocha can't find module
✖ ERROR: Cannot find module '@babel/register'

Input Code

• REPL or Repo link if applicable:

Expected behavior/code
Mocha should require @babel/register

Babel Configuration (babel.config.js, .babelrc, package.json#babel, cli command, .eslintrc)

• Filename: babel.config.js

{
	plugins: [
		"@babel/transform-arrow-functions",
		"@babel/proposal-optional-chaining",
		"@babel/proposal-export-default-from",
		"@babel/proposal-class-properties",
		"require-context-hook"
	],

	presets: [
		[
			"@babel/env",
			{
				targets: {
					node: "10"
				},
				useBuiltIns: "usage",
				corejs: 3
			}
		]
	]
}

Environment

  System:
    OS: Linux 5.3 Arch Linux
  Binaries:
    Node: 10.17.0 - ~/.nvm/versions/node/v10.17.0/bin/node
    Yarn: 1.19.1 - /usr/bin/yarn
    npm: 6.11.3 - ~/.nvm/versions/node/v10.17.0/bin/npm
  npmPackages:
    @babel/cli: ^7.7.0 => 7.7.4 
    @babel/core: ^7.7.2 => 7.7.4 
    @babel/plugin-proposal-class-properties: ^7.7.0 => 7.7.4 
    @babel/plugin-proposal-export-default-from: ^7.5.2 => 7.7.4 
    @babel/plugin-proposal-optional-chaining: ^7.6.0 => 7.7.4 
    @babel/preset-env: ^7.7.1 => 7.7.4 
    @babel/register: ^7.7.4 => 7.7.4 
    babel-plugin-require-context-hook: ^1.0.0 => 1.0.0

Additional context/Screenshots
Run with:
mocha -r @babel/register -r test/__fixtures/chai-plugins --recursive test/unitnpx envinfo --preset babel

[babel-bot]

Hey @gear4s! We really appreciate you taking the time to report an issue. The collaborators on this project attempt to help as many people as possible, but we're a limited number of volunteers, so it's possible this won't be addressed swiftly.

If you need any help, or just have general Babel or JavaScript questions, we have a vibrant Slack community that typically always has someone willing to help. You can sign-up here for an invite."

[futagoza]

You might need to pass -r babel-plugin-require-context-hook/register to mocha when using babel-plugin-require-context-hook:

mocha -r babel-plugin-require-context-hook/register -r @babel/register -r test/__fixtures/chai-plugins --recursive test/unitnpx envinfo --preset babel

or

# test/mocha.opts
-r babel-plugin-require-context-hook/register
-r @babel/register
-r test/__fixtures/chai-plugins
--recursive
--preset babel
test/unitnpx
envinfo

# and just call
mocha

[gear4s]

Thanks for replying @futagoza

I now get the error that context hook register does not exist:
ERROR: Cannot find module 'babel-plugin-require-context-hook/register'

I'm also using the test/mocha.opts

[futagoza]

Try these (just to debug, they wont let you use require.context):

• exclude babel-plugin-require-context-hook entirely
• other register hooks (e.g. ts-node/register)

If neither of these work, it's either a problem with mocha (most likely) or your node installation

[gear4s]

I got it working, thanks for pointing out mocha and node installation

Issue was that mocha was in the global installed modules, and not part of dev dependencies. I've installed it into my project's dev deps and reinstalled node on nvm.

Thanks a lot!

[JLHwung]

@gear4s I am glad that your issue is resolved.