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postcss-unrgba

v1.1.1

Published

Convert rgba() values to hex

Downloads

4,053

Readme

UnRGBA Build Status

UnRGBA changes rgba() values to hex. This can be useful for outputting CSS for older browsers like Internet Explorer 8.

/* before */

.hero {
	background: rgba(153, 221, 153, .8);
	border: solid 1px rgba(100, 102, 103, .8);
	border-right-color: rgba(100, 102, 103, 0);
}

/* after */

.hero {
	background: #99dd99;
	border: solid 1px #646667;
	border-right-color: transparent;
}

Usage

Add UnRGBA to your build tool:

npm install postcss-unrgba --save-dev

Node

require('postcss-unrgba')({ /* options */ }).process(YOUR_CSS);

PostCSS

Add PostCSS to your build tool:

npm install postcss --save-dev

Load UnRGBA as a PostCSS plugin:

postcss([
    require('postcss-unrgba')({ /* options */ })
]);

Gulp

Add Gulp PostCSS to your build tool:

npm install gulp-postcss --save-dev

Enable UnRGBA within your Gulpfile:

var postcss = require('gulp-postcss');

gulp.task('css', function () {
    return gulp.src('./css/src/*.css').pipe(
        postcss([
            require('postcss-unrgba')({ /* options */ })
        ])
    ).pipe(
        gulp.dest('./css')
    );
});

Grunt

Add Grunt PostCSS to your build tool:

npm install grunt-postcss --save-dev

Enable UnRGBA within your Gruntfile:

grunt.loadNpmTasks('grunt-postcss');

grunt.initConfig({
    postcss: {
        options: {
            processors: [
                require('postcss-unrgba')({ /* options */ })
            ]
        },
        dist: {
            src: 'css/*.css'
        }
    }
});

Options

method

Type: String
Default: 'replace'

clone

Copies any properties with rgba values to new properties using hex.

/* before */

.hero {
	background: rgba(153, 221, 153, .8);
}

/* after */

.hero {
	background: #99dd99;
	background: rgba(153, 221, 153, .8);
}
replace

Copies any properties with rgba values to new properties using hex while removing the original.

/* before */

.hero {
	background: rgba(153, 221, 153, .8);
}

/* after */

.hero {
	background: #99dd99;
}
warn

Warns whenever a property with an rgba value is found.

filter

Type: Boolean
Default: false

true

Uses the Internet Explorer proprietary filter to preserve alpha-transparent backgrounds.

/* before */

.hero {
	background: rgba(153, 221, 153, .8);
}

/* after */

.hero {
	filter: progid:DXImageTransform.Microsoft.gradient(GradientType=0,startColorstr='#8099dd99',endColorstr='#8099dd99');
}
false

Uses regular hexadecimal values when processing backgrounds.

/* before */

.hero {
	background: rgba(153, 221, 153, .8);
}

/* after */

.hero {
	background: #99dd99;
}

properties

Type: Array
Default: ['background', 'background-color', 'color', 'border', 'border-bottom', 'border-bottom-color', 'border-color', 'border-left', 'border-left-color', 'border-right', 'border-right-color', 'border-top', 'border-top-color', 'outline', 'outline-color']

Specifies the properties on which rgba values will be processed. If a falsey value is passed then all properties will be processed.