Browserify cannot find module 'react-router-dom' - reactjs

Question

I try to play with react-router but can't make it working with browserify. I'm stuck with this error:
events.js:182
throw er; // Unhandled 'error' event
^
Error: Cannot find module 'react-router-dom' from '/usr/src/app'
at /usr/src/app/node_modules/browserify/node_modules/browser-resolve/node_modules/resolve/lib/async.js:46:17
at process (/usr/src/app/node_modules/browserify/node_modules/browser-resolve/node_modules/resolve/lib/async.js:173:43)
at ondir (/usr/src/app/node_modules/browserify/node_modules/browser-resolve/node_modules/resolve/lib/async.js:188:17)
at load (/usr/src/app/node_modules/browserify/node_modules/browser-resolve/node_modules/resolve/lib/async.js:69:43)
at onex (/usr/src/app/node_modules/browserify/node_modules/browser-resolve/node_modules/resolve/lib/async.js:92:31)
at /usr/src/app/node_modules/browserify/node_modules/browser-resolve/node_modules/resolve/lib/async.js:22:47
at FSReqWrap.oncomplete (fs.js:152:21)
npm info lifecycle irregular_verbs#1.0.0~start: Failed to exec start script
My first js file is server.js which generate a bundle to load app.js.
I removed everything on my app.js file to be sure that no personal components create a conflict. So it is very light now! But still doesn't work.
My app.js file:
var React = require('react');
require('react-router-dom');
React.render(<div><p>Blop</p></div>, document.getElementById('base_ihm'));
Without the require('react-router-dom');, everything works!
My server.js:
var express = require('express');
var browserify = require('browserify');
var React = require('react');
var jsx = require('node-jsx');
var app = express();
// Constants
const PORT = 8080;
jsx.install();
// Enable compression
var compression = require('compression');
app.use(compression());
// Create a path name bundle.js which call app.js and apply browserify
app.use('/bundle.js', function(req, res) {
res.setHeader('content-type', 'application/javascript');
browserify('./app.js', {
debug: true
})
.transform('reactify')
.bundle()
.pipe(res);
});
// static ressources
app.use(express.static(__dirname + '/static/css'));
app.use(express.static(__dirname + '/static/images'));
// Main route
app.use('/', function(req, res) {
res.setHeader('Content-Type', 'text/html');
res.end(React.renderToStaticMarkup(
React.createElement(
'html', null,
// Header
React.createElement(
'head', null,
// Title
React.createElement('title', null, 'Irregular Verbs'),
// Meta
React.createElement('meta', {charSet: 'UTF-8'}, null),
React.createElement('meta', {name: 'viewport', content: 'width=device-width, initial-scale=1'}, null),
// Custom CSS
React.createElement('link', { rel: 'stylesheet', href: 'main.css' }, null)
),
// Body
React.DOM.body(
null,
React.DOM.div({
id: 'base_ihm',
dangerouslySetInnerHTML: {
__html: React.renderToString(React.createElement('div', null))
}
}),
// Use the path create just before
React.DOM.script({
src: '/bundle.js'
})
)
)
));
});
var server = app.listen(PORT, function() {
var addr = server.address();
console.log('Listening # http://%s:%d', addr.address, addr.port);
});
Is react-router well installed?
There is the content of my package.json file:
{
"main": "server.js",
"scripts": {
"start": "node server.js"
},
"dependencies": {
"express": "^4.13.3",
"body-parser": "^1.15.2",
"node-jsx": "^0.13.3",
"react": "^15.6.1",
"react-dom": "^15.6.1",
"react-router-dom": "^4.0.0",
"browserify": "^14.4.0",
"reactify": "^1.1.1",
"mysql": "^2.11.1"
}
}
I use docker and docker-compose. On my Dockerfile, I added RUN npm ls and RUN ls node_modules: I can see react-router and react-router-dom. So there are here!
Any cache with docker?
I rename my image to be sure to use the good one and not an old one.
I also restart my container using docker-compose up --force-recreate.
So I presume it is ok.
Erreur with server.js where browserify is used
I think I've made a mistake in my server.js file but I have no idea...
There are what I have tried with no success:
I try to add a global:true then global:false at my transform('reactify')
In my Dockerfile, I try to add npm install react-router-dom -g to be sure it was installed
I finaly upgraded my versions. And also tried react-router-dom in version 4.1.1
I replace the require('react-router-dom') by require('./node_modules/react-router-dom') but get the same error (except it was the new path which wasn't found).
Do you have any idea?
Thank you for your help!

Answer 1

Sorry for the late answer. It was finaly a Docker/Docker-compose problem...
Even using docker-compose up --force-recreate, the old image was still used.
I renamed my container in my docker-compose.yml file so at the next start, it created a new container with the new image.