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stylus-mq

Stylus - Media Queries

stylus-mq is a simple mixin to ease the use of media queries in stylus. A lot of inspiration to this library was gathered from sass-mq.

Installation

With NPM

npm install stylus-mq

Manual installation can be done by downloading mq.styl to your project.

Basic example

stylus-mq will allow you to write this:

@import 'mq.styl';
 
$mq-breakpoints = {
  small: 768px
};
 
.className {
  background-color: white;
 
  +mq($until: 'small') {
    background-color: red;
  }
}

and generate this:

.className {
  background-color: white;
}
 
@media (max-width: 48em) {
  .className {
    background-color: red;
  }
}

Options

$mq-breakpoints

Allows you to override the default named breakpoints.

Example:

$mq-breakpoints = {
  mobile: 768px,
  tablet: 1024px,
  desktop: 1280px
};

Default settings:

$mq-breakpoints ?= {
  tiny: 480px,
  small: 768px,
  medium: 992px,
  large: 1200px
};

$mq-responsive

Allows you to create a separate stylesheet for older browsers that don't support media queries.

Example:

$mq-responsive = false;

Default settings:

$mq-responsive ?= true;

$mq-static-breakpoint

Breakpoint to be used if $mq-responsive is set to false.

Example:

$mq-static-breakpoint = 'mobile';

Default settings:

$mq-static-breakpoint ?= 'desktop';

$mq-base-font-size

Base font size to calculate media queries from.

Example:

$mq-base-font-size = 14px;

Default settings:

$mq-base-font-size ?= 16px;

Parameters

mq() takes up to three optional parameters:

• $from: inclusive min-width boundary
• $until: exclusive max-width boundary
• $and: additional custom directives

Breakpoints as JSON data

To enable using the same breakpoint names and widths in both Stylus and JavaScript the breakpoint data can be converted to JSON.

Example:

body {
  &:after {
    display: none;
    content: mq-breakpoints-to-json();
  }
}

Results:

body:after {
  display: none;
  content: '{ "tiny": "30em", "small": "48em", "medium": "62em", "large": "75em" }';
}

This can be read and parsed with something like this:

var removeQuotes = function (string) {
  return string.replace(/^['"]+|\s+|\\|(;\s?})+|['"]$/g, '');
};
 
var getBreakpoints = function () {
  var breakpoints = window
    .getComputedStyle(document.body, ':after')
    .getPropertyValue('content');
 
  return JSON.parse(removeQuotes(breakpoints));
};

Adding custom breakpoints

$mq-breakpoints = mq-add-breakpoint('tvscreen', 1920px);
 
.hide-on-tv {
  +mq('tvscreen') {
    display: none;
  }
}

Testing

Install dependencies.

npm install

Run tests.

npm test