I'm new to browserify and trying to load npm modules in browser but I'm getting the following error:
Uncaught ReferenceError: require is not defined
I'm following the tutorial from http://browserify.org/. Created javascript file with the following content:
var unique = require('uniq');
then run
npm install uniq
and
browserify main.js -o bundle.js
the bundle.js file is generated and I included it in my html but still getting the above error. Any ideas what am I doing wrong?
This is the content of final HTML file:
<!DOCTYPE html>
<html>
<head>
<title></title>
<script src="bundle.js"></script>
<script src="script.js"></script>
</head>
<body>
</body>
</html>
This is the content of bundle.js: http://pastebin.com/1ECkBceB
and this is script.js:
var unique = require('uniq');
The "require" function is only available in the "bundle.js" script context. Browserify will take all the script files necessary and put them into the "bundle.js" file, so you should only have to include "bundle.js" in the HTML file, not the "script.js" file.
I personally prefer to keep my library code and application code seperate. So i also create something like a bundle.js and a script.js.
there is a simple workaround, that makes this work. This is somewhere in my browserify-file:
window.require = require;
this will expose require into the "global" namespace. You can then require all you want from your script.js.
You do give up ONE advantage, though: you'll have to include all the required libraries in your browserify file. You don't get the luxury of it finding all your dependencies, then!
I fully expect people to cry "dirty hack" or "this is not how it's meant to be". Yes, maybe. But I want those files seperate. And as long as i don't include anything else that is called "require", i'll be fine, thank you very much.
Sometimes one global can make all the difference.
It seems that to run a script like that you have to use standalone on the bundle.
browserify main.js --standalone Bundle > bundle.js
After that you should have window.Bundle in bundle.js.
So at that point you should be able to access from script.js.
If you are using grunt install grunt-browserify.
npm install grunt-browserify --save-dev
And then on grunt.js Gruntfile:
// Add the task
grunt.loadNpmTasks('grunt-browserify');
// Add the configuration:
browserify: {
dist: {
options: {
// uncomment if you use babel
// transform: [
// ["babelify", { "presets": ["env"] }]
// ],
browserifyOptions: {
standalone: 'Bundle'
}
},
files: {
"bundle.js": ["main.js"]
}
}
},
// on your build task
var bundled = browserify('main.js', { standalone: 'Bundle' })
.bundle()
.pipe(source('bundle.js'))
.pipe(gulp.dest(outDir));
See here for Chart.js gulp file.
If you are using babel and es6 probably you are exporting your Bundle class.
// you should have something like that
class Bundle {
...
}
export default Bundle;
So because of babel now to use Bundle you should use Bundle.default and so:
// in script.js
var bundle = new Bundle.default();
To avoid this syntax you can override Bundle with Bundle.default.
At the end of bundle.js insert:
window.Bundle = window.Bundle.default;
So now on you'll have :
// in script.js
var bundle = new Bundle();