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Bug: Cannot npm-link other project #19898

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gopoqosntjbfhjjezh opened this issue Sep 24, 2020 · 5 comments
Closed

Bug: Cannot npm-link other project #19898

gopoqosntjbfhjjezh opened this issue Sep 24, 2020 · 5 comments
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Status: Unconfirmed A potential issue that we haven't yet confirmed as a bug

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@gopoqosntjbfhjjezh
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I'm not sure its a bug, but I am running out of ideas.

I'm trying to import a self-written module.

React version: 16.13.1

Steps To Reproduce

I have the following setup

myRoot
  |-- t-lib
  |        |-- src
  |        |-- config-overwrides.js   (I'm using react-app-rewired, but I think it's not relevant)
  |        |-- package.json
  |        |-- ... other stuff
  |-- t-consumer
  |        |-- src
  |        |-- package.json
  |        |-- ... other stuff

Inside t-lib/package.json I have name: 't-lib'.

So, while in the folder of t-consumer I did:

npm link ../t-lib

And in the t-consumer/src/App.js, I wrote import myLib from 't-lib'

What I get is

SyntaxError: C:\Users\...\t-lib\src\index.js: Support for the experimental syntax 'jsx' isn't currently enabled (7:3):

   5 | function MountApp(element) {
   6 |  ReactDOM.render(
>  7 |          <React.StrictMode>
     |          ^
   8 |                  <App />
   9 |          </React.StrictMode>,
  10 |          element

Add @babel/plugin-transform-react-jsx (https://git.io/vb4yd) to the 'plugins' section of your Babel config to enable transformation.


npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! [email protected] build: `react-app-rewired build`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the [email protected] build script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in: ...

The current behavior

I get the error metioned above.

I would like to note, that the error occures in the t-lib/src/index.js, not in the t-consumer project. So appearently the setup is correct, just babel gets confused somehow about the jsx.

The expected behavior

I would like it to actually build the project, or possibly a hint, on which settings I have done wrong.

Code

In case it's needed, here is the code: (both projects are basicly the same, and just trying to get it to work)

public/index.html

<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="utf-8" />
		<meta name="viewport" content="width=device-width, initial-scale=1" />
		<meta name="theme-color" content="#000000" />
		<meta
			name="description"
			content="Web site created using create-react-app"
		/>
		<title>React App</title>
	</head>
	<body>
		<noscript>You need to enable JavaScript to run this app.</noscript>
		<div id="root"></div>
		<script>
			setTimeout(() => {
				// I know this is bad practice, it's just a proof of concept to get a library to work.
				const element = document.getElementById('root');
				testConsumer.MountApp(element);
			}, 1000);
		</script>
	</body>
</html>

src/App.js

import React from 'react';
import myLib from 't-lib';  // only in the consumer

function App() {
	console.log(myLib);
	return <div>consumer</div>;
}

export default App;

src/index.js

import React from 'react';
import ReactDOM from 'react-dom';
import App from './App';

function MountApp(element) {
	ReactDOM.render(
		<React.StrictMode>
			<App />
		</React.StrictMode>,
		element
	);
}

export { MountApp };

config-overrides.js

const path = require('path');

module.exports = {
	webpack: function (config, env) {
		config.output.filename = 'static/js/[name].js';
		config.output.chunkFilename = 'static/js/[name].chunk.js';
		config.output.library = 'testConsumer';
		return config;
	},
	paths: function (paths, env) {
		// ...add your paths config
		paths.appBuild = path.resolve(
			path.join('..', '..', 'MyWebpage', 't-consumer')
		);

		return paths;
	}
};

package.json

{
	"name": "t-consumer",
	"version": "0.1.0",
	"private": true,
	"dependencies": {
		"@testing-library/jest-dom": "^4.2.4",
		"@testing-library/react": "^9.5.0",
		"@testing-library/user-event": "^7.2.1",
		"react": "^16.13.1",
		"react-app-rewired": "^2.1.6",
		"react-dom": "^16.13.1",
		"react-scripts": "3.4.3"
	},
	"scripts": {
		"build": "react-app-rewired build",
		"eject": "react-scripts eject"
	},
	"eslintConfig": {
		"extends": "react-app"
	},
	"browserslist": {
		"production": [
			">0.2%",
			"not dead",
			"not op_mini all"
		],
		"development": [
			"last 1 chrome version",
			"last 1 firefox version",
			"last 1 safari version"
		]
	},
	"browser": "./src/index",
	"homepage": "t-consumer"
}
@gopoqosntjbfhjjezh gopoqosntjbfhjjezh added the Status: Unconfirmed A potential issue that we haven't yet confirmed as a bug label Sep 24, 2020
@gopoqosntjbfhjjezh
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P.S., I have read 13991and 19844, and of course Invalid Hook Call Warning.

@bvaughn
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bvaughn commented Sep 24, 2020

I'm not sure this bug is filed in the right place.

@gopoqosntjbfhjjezh
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@bvaughn where would be the right place?

@bvaughn
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bvaughn commented Oct 5, 2020

Sounds like you're having an issue trying to get NPM link working with a Babel transform. Might try asking on Stack Overflow or posting in the Babel repo?

@threepointone
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This is related to create-react-app working across workspaces in a monorepo facebook/create-react-app#1333 That thread has some suggestions on how to get babel transpilation working, would recommend you follow those.

This issue shouldn't be in this repo regardless, I think.

@bvaughn bvaughn closed this as completed Oct 15, 2020
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@threepointone @bvaughn @gopoqosntjbfhjjezh