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Aloha from Justin Gordon (bio) and the ShakaCode Team! We're actively looking for new projects involving React, React-Native, and Rails. Please contact me if we could potentially help you in any way. Besides consulting on bigger projects, ShakaCode is doing ScreenHero plus Slack/Github based coaching for React on Rails. See our blog post Can ShakaCode Help You? for more information.
I'm offering a free half-hour project consultation, on anything from React on Rails to any aspect of web application development for both consumer and enterprise products. In addition to React.js and Rails, we're doing React-Native iOS and Android apps!
Whether you have a new project or need help on an existing project, feel free to contact me directly at justin@shakacode.com and thanks in advance for any referrals!
Your support keeps this project going!
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React on Rails Info
React on Rails is ShakaCode's flagship product. We want to make sure you're aware of it!
Testimonials
From Joel Hooks, Co-Founder, Chief Nerd at egghead.io, January 30, 2017:
For more testimonials, see Live Projects and Kudos.
boostrap-loader v2 Docs!
If you want the v1 docs which are compatible with Webpack v1, please see the v1 branch. If you're using v2, be sure to check the peer dependencies of webpack
and the extract-text-webpack-plugin
in the package.json.
bootstrap-loader
Successor to bootstrap-sass-loader. Load Bootstrap styles and scripts in your Webpack bundle. This loader uses SASS to process CSS styles. Bootstrap 3 & 4 are supported.
NOTE: Bootstrap 4, (twbs/bootstrap)[https://github.com/twbs/bootstrap] is currently in alpha right now. Bootstrap 4 definitely worked when we first released this package. The parent company of this product, ShakaCode had originally planned to use it for our upcoming commercial product, but we decided that Bootstrap 4 was changing too fast for a production product. Thus, we're still using Bootstrap 3, and we're not actively developing with Bootstrap 4. Consequently, for Bootstrap 4 issues, we need one of:
- Community support to help us with Bootstrap 4 issues and pull requests.
- We'd be thrilled to have another maintainer join us to help with Bootstrap 4 issues.
- We'd also be thrilled if any companies are open to sponsoring the development of features and issues regarding Bootstrap 4.
That being said, Bootstrap 4 probably works just fine! You must use 4.0.0-alpha.4
or greater.
NEWS
2017-03-15: Bootstrap v2.0.0 released! All examples in /examples are updated for Webpack v2 and yarn. We're not supporting beta versions of Webpack. Some older releases did support it. So if you upgrade, you have to update for the new 2.2.x+ version of Webpack.
2016-10-30: Released 1.3.0. Supports multiple config files in one build.
2016-10-02: Released 2.0.0-beta.12. Supports isomorphic-style-loader and disabling SASS source map and/or resolve-url-loader injection!
2016-09-10: Released 2.0.0-beta.11 with support for Bootstrap 4, alpha 4!
Table of Contents
- Installation
- Usage
- Examples
- Common configuration options
- Additional configurations
- FAQ
- Contributing
- License
- Examples and related libraries
- Useful Q&A
Installation
Get it via npm:
npm install bootstrap-loader
Don't forget to install these dependencies (use --save or --save-dev
option per your needs to update your package.json
):
# Bootstrap 3
npm install --save-dev bootstrap-sass
# or Bootstrap 4
npm install --save-dev bootstrap@v4.0.0-alpha.4
# Note, alpha.3 is broken, and alpha.2 is no longer supported
# Node SASS & other loaders needed to handle styles
npm install --save-dev css-loader node-sass resolve-url-loader sass-loader style-loader url-loader
# Additional loaders required for Bootstrap 4 & Webpack 2
npm install --save-dev imports-loader exports-loader
If you're using Bootstrap 4, you probably need:
npm install --save-dev postcss-loader
Usage
Simply require it:
require('bootstrap-loader');
Or add bootstrap-loader
as a module in an entry point in your webpack config (you'll need Webpack 2.1 beta and higher):
entry: [ 'bootstrap-loader', './app' ]
Config is optional. If used, by default it should be placed in your project's root dir with name .bootstraprc
. You can write it in YAML
or JSON
formats. Take a look at the default config files for Bootstrap 3 and Bootstrap 4. Note, we recommend using a configuration or else you might pick up unwanted upgrades, such as when we make Bootstrap 4 the default. Config options don't fall back on the defaults once a config file is present. Be sure not to delete config options. To start with a custom config, copy over a default config file as a starting point.
If the default location doesn't work for you (e.g. you want to create multiple bootstrap configs for branding variations or you symlink your npm_modules directory), you may pass the absolute path of the .bootstraprc
file to the loader in your webpack config, e.g. bootstrap-loader/lib/bootstrap.loader?extractStyles&configFilePath=${__dirname}/.bootstraprc!bootstrap-loader/no-op.js
.
Note that :__dirname
is a global variable that Node sets for us. It is "the name of the directory that the currently executing script resides in."
---
# You can use comments here
useFlexbox: true
styleLoaders:
- style-loader
- css-loader
- sass-loader
styles:
normalize: true
print: true
scripts:
alert: true
button: true
{
// And JSON comments also!
"useFlexbox": true,
"styleLoaders": ["style-loader", "css-loader", "sass-loader"],
"styles": {
"normalize": true,
"print": true
},
"scripts": {
"alert": true,
"button": true
}
}
If no config provided, default one for Bootstrap 3 will be used.
Bootstrap 4 internal dependency solution
Because of Bootstrap 4's removal of UMD, internal dependencies, such as Popover's dependencies on Tooltip and Dropdown's dependency on Utils, are no longer naively resolved by Webpack (See Issue #172. In order to solve this issue, add the following code to your webpack configuration:
plugins: [
new webpack.ProvidePlugin({
$: "jquery",
jQuery: "jquery",
"window.jQuery": "jquery",
Tether: "tether",
"window.Tether": "tether",
Alert: "exports-loader?Alert!bootstrap/js/dist/alert",
Button: "exports-loader?Button!bootstrap/js/dist/button",
Carousel: "exports-loader?Carousel!bootstrap/js/dist/carousel",
Collapse: "exports-loader?Collapse!bootstrap/js/dist/collapse",
Dropdown: "exports-loader?Dropdown!bootstrap/js/dist/dropdown",
Modal: "exports-loader?Modal!bootstrap/js/dist/modal",
Popover: "exports-loader?Popover!bootstrap/js/dist/popover",
Scrollspy: "exports-loader?Scrollspy!bootstrap/js/dist/scrollspy",
Tab: "exports-loader?Tab!bootstrap/js/dist/tab",
Tooltip: "exports-loader?Tooltip!bootstrap/js/dist/tooltip",
Util: "exports-loader?Util!bootstrap/js/dist/util",
})
]
Examples
Check out example apps in examples/
folder:
- Basic usage: examples/basic
- See the
npm run bs4:customlocation
tasks for examples on how to pass your .bootstraprc config. - With CSS Modules: examples/css-modules (This example shows off hot reloading with Babel 6 as well!)
- With multiple entries examples/multiple-entries with their own config.
Common configuration options
Here are common options for Bootstrap 3 & 4.
Bootstrap 3 & 4
loglevel
Default: disabled
Outputs debugging info. Set this option to debug
to output debugging information. This is critical for debugging issues. The output will go to your webpack console.
loglevel: debug
bootstrapVersion
Default: 3
Major version of Bootstrap. Can be 3 or 4.
bootstrapVersion: 3
styleLoaders
Default: [ 'style-loader', 'css-loader', 'sass-loader' ]
Array of webpack loaders. sass-loader
is required, order matters. In most cases the style loader should definitely go first and the sass loader should be last.
Note: Beginning with Webpack v2.1.0-beta.26, the '-loader' suffix is required for all loaders.
To maintain compatibility with older versions, all accepted style loaders (style, css, postcss, sass, resolve-url) are automatically appended with '-loader'.
It is recommended that you explicitly state the '-loader' suffix for every webpack loader in styleLoaders
to ensure compatibility in the long term.
styleLoaders:
- style-loader
- css-loader
- sass-loader
# You can apply loader params here:
- sass-loader?outputStyle=expanded
Different settings for different environments can be used.
# It depends on value of NODE_ENV environment variable
env:
development:
styleLoaders:
- style-loader
- css-loader
- resolve-url-loader
- sass-loader
production:
styleLoaders:
- style-loader
- css-loader
- sass-loader
extractStyles
Default: false
Extract styles to stand-alone css file using extract-text-webpack-plugin
version 2.0.0-beta or higher. See extract-text-plugin for more details.
extractStyles: false
# Different settings for different environments can be used,
# It depends on value of NODE_ENV environment variable
env:
development:
extractStyles: false
production:
extractStyles: true
This param can also be set to true
in webpack config:
entry: [ 'bootstrap-loader/extractStyles', './app' ]
See shakacode/react-webpack-rails-tutorial/blob/master/client/webpack.client.rails.build.config. for a working example which is deployed to www.reactrails.com.
preBootstrapCustomizations
Default: disabled
Customize Bootstrap variables that get imported before the original Bootstrap variables. Thus, derived Bootstrap variables can depend on values from here. See the Bootstrap _variables.scss
file for examples of derived Bootstrap variables.
preBootstrapCustomizations: ./path/to/bootstrap/pre-customizations.scss
bootstrapCustomizations
Default: disabled
This gets loaded after bootstrap variables is loaded. Thus, you may customize Bootstrap variables based on the values established in the Bootstrap _variables.scss
file. Note, if bootstrap
did not have derived values, it would not be necessary to have two config files for customizing bootstrap values.
If you want your bootstrap override value to apply to derived variable values, then place your customizations in preBootstrapCustomizations
. If you want to be sure your changes don't affect other derived values, place the changes in bootstrapCustomizations.
If you are not sure, you can probably simply use preBootstrapCustomizations
and, if you have issues, see _variables.scss
for derived values.
bootstrapCustomizations: ./path/to/bootstrap/customizations.scss
appStyles
Default: disabled
Import your custom styles here. Usually this endpoint-file contains list of @imports
of your application styles.
appStyles: ./path/to/your/app/styles/endpoint.scss
styles
Default: all
Bootstrap styles.
styles:
mixins: true
normalize: true
...
# or enable/disable all of them:
styles: true / false
scripts
Default: all
Bootstrap scripts.
scripts:
transition: true
alert: true
...
# or enable/disable all of them:
scripts: true / false
useCustomIconFontPath
Default: false
If you're using a custom icon font and you need to specify its path ($icon-font-path
) in your Sass files, set this option to true.
useCustomIconFontPath: true / false
$icon-font-path: ../fonts // relative to your Sass file
$icon-font-name: 'glyphicons' // you'll typically want to change this too.
Bootstrap 4 only
There is only one additional option for Bootstrap 4:
useFlexbox
Default: true
Enable / disable flexbox model.
useFlexbox: true
Tether
Additionally, Bootstrap 4 requires Tether. You can add Tether per the examples in the /examples
directory.
- Add tether to package.json:
npm i --save tether
- Add tether as an entry point to your webpack config.
- Add this plugin to your webpack config:
plugins: [
new ExtractTextPlugin('app.css', { allChunks: true }),
new webpack.ProvidePlugin({
"window.Tether": "tether"
}),
],
PostCSS
Bootstrap 4 seems to require postcss:
- Add postcss and the the postcss-loader:
npm i --save postcss postcss-loader
- Put
postcss
beforesass
in the order of loaders in your.bootstraprc
file.
Glyphicon alternatives
Glyphicons have been removed from Bootstrap 4. The examples demonstrate how to use the font-awesome-loader
Additional configurations
Paths to custom assets
If you use bootstrap-loader
to load your styles (via preBootstrapCustomizations
, bootstrapCustomizations
& appStyles
) and you load custom assets (fonts, images etc.), then you can use relative paths inside url
method (relative to SASS file, from which you load asset).
This was made possible thanks to resolve-url-loader. In common case you don't have to do anything special to apply it — we are doing it internally (just don't forget to install it). But if you want to use its custom settings, please provide it explicitly via styleLoaders
option in .bootstraprc
:
styleLoaders:
- style-loader
- css-loader?sourceMap
- resolve-url-loader?sourceMap
- sass-loader?sourceMap
Incorporating Bootswatch themes
The following steps are needed to successfully incorporate a theme from Bootswatch:
-
Download the
.scss
files (_variables.scss
and_bootswatch.scss
) for the theme you have chosen. -
Put the files somewhere in your project structure (e.g. the
./styles
directory). -
Add an additional SCSS file, like bs-theme.scss, that contains the following:
@import './_bootswatch.scss';
-
Add the following to your .bootstraprc file:
preBootstrapCustomizations: ./styles/_variables.scss
appStyles: ./styles/bs-theme.scss
The theme should now be applied as expected. Note that this section might be valid for other theme packs as well.
jQuery
If you want to use Bootstrap's JS scripts — you have to provide jQuery
to Bootstrap JS modules using imports-loader
. To avoid having to include jQuery
in your project you can disable all scripts (see scripts).
module: {
loaders: [
// Use one of these to serve jQuery for Bootstrap scripts:
// Bootstrap 3
{ test:/bootstrap-sass[\/\\]assets[\/\\]javascripts[\/\\]/, loader: 'imports-loader?jQuery=jquery' },
// Bootstrap 4
{ test: /bootstrap[\/\\]dist[\/\\]js[\/\\]umd[\/\\]/, loader: 'imports-loader?jQuery=jquery' },
],
},
Note: if you're not concerned about Windows, the lines look like this (simpler regexp pattern):
// Boostrap 3
{ test: /bootstrap-sass\/assets\/javascripts\//, loader: 'imports-loader?jQuery=jquery' },
// Bootstrap 4
{ test: /bootstrap\/dist\/js\/umd\//, loader: 'imports-loader?jQuery=jquery' },
Icon fonts
Bootstrap uses icon fonts. If you want to load them, don't forget to setup url-loader
or file-loader
in webpack config:
module: {
loaders: [
{ test: /\.(woff2?|svg)$/, loader: 'url-loader?limit=10000' },
{ test: /\.(ttf|eot)$/, loader: 'file-loader' },
],
},
FAQ
Using Bootstrap mixins and variables
You should use sass-resources-loader
in your webpack
config.
In your webpack.config.js
:
module.exports = {
// stuff removed for clarity ...
module: {
loaders: [
// stuff removed for clarity ...
{
test: /\.scss$/,
loader: ExtractTextPlugin.extract(
'style-loader',
'css-loader?modules&importLoaders=2&localIdentName=[name]__[local]__[hash:base64:5]' +
'!sass-loader' +
'!sass-resources-loader'
),
},
// stuff removed for clarity ...
],
},
// stuff removed for clarity ...
sassResources: './config/sass-resources.scss',
}
And in your ./config/sass-resources.scss
:
// Make variables and mixins available when using CSS modules.
@import "node_modules/bootstrap-sass/assets/stylesheets/bootstrap/_variables";
@import "node_modules/bootstrap-sass/assets/stylesheets/bootstrap/_mixins";
You can then use mixins and variables from Bootstrap in your own code.
Using a custom location for bootstrap module
By default, bootstrap-loader
will try to resolve bootstrap
from where bootstrap-loader
has been installed. In certain situations (e.g. npm linking, using a custom package installer) it may not be resolvable. In this case, you can pass in the location manually.
require('bootstrap-loader?bootstrapPath=/path/to/bootstrap');
// or
entry: [ 'bootstrap-loader?bootstrapPath=/path/to/bootstrap', './app' ]
Contributing
See Contributing to get started.
License
MIT.
Examples and related libraries
- react-webpack-rails-tutorial, live example at www.reactrails.com.
- sass-resources-loader
- Simple integration example
- React + hot reloading example: bootstrap-loader-css-modules-example
- react_on_rails gem
Useful Q&A
We'll identify issues that are questions.
Aloha from Justin Gordon (bio) and the ShakaCode Team! We're actively looking for new projects involving React, React-Native, and Rails. Please contact me at justin@shakacode.com if we could potentially help you in any way. Besides consulting on bigger projects, ShakaCode is doing Skype plus Slack/Github based coaching for React on Rails. See our blog post Can ShakaCode Help You? for more information.
We're offering a free half-hour project consultation, on anything from React on Rails to any aspect of web application development for both consumer and enterprise products. In addition to React.js and Rails, we're doing React-Native iOS and Android apps!
Whether you have a new project or need help on an existing project, feel free to contact me directly at justin@shakacode.com and thanks in advance for any referrals!
Your support keeps this project going.