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Current File : /home/web/dev.agtindia.co.in/project-mgt/node_modules/clean-css/lib/optimizer/configuration.js
// Contains the interpretation of CSS properties, as used by the property optimizer

var breakUp = require('./configuration/break-up');
var canOverride = require('./configuration/can-override');
var restore = require('./configuration/restore');

var propertyOptimizers = require('./level-1/property-optimizers');
var valueOptimizers = require('./level-1/value-optimizers');

var override = require('../utils/override');

// Properties to process
// Extend this object in order to add support for more properties in the optimizer.
//
// Each key in this object represents a CSS property and should be an object.
// Such an object contains properties that describe how the represented CSS property should be handled.
// Possible options:
//
// * components: array (Only specify for shorthand properties.)
//   Contains the names of the granular properties this shorthand compacts.
//
// * canOverride: function
//   Returns whether two tokens of this property can be merged with each other.
//   This property has no meaning for shorthands.
//
// * defaultValue: string
//   Specifies the default value of the property according to the CSS standard.
//   For shorthand, this is used when every component is set to its default value, therefore it should be the shortest possible default value of all the components.
//
// * shortestValue: string
//   Specifies the shortest possible value the property can possibly have.
//   (Falls back to defaultValue if unspecified.)
//
// * breakUp: function (Only specify for shorthand properties.)
//   Breaks the shorthand up to its components.
//
// * restore: function (Only specify for shorthand properties.)
//   Puts the shorthand together from its components.
//
var configuration = {
  animation: {
    canOverride: canOverride.generic.components([
      canOverride.generic.time,
      canOverride.generic.timingFunction,
      canOverride.generic.time,
      canOverride.property.animationIterationCount,
      canOverride.property.animationDirection,
      canOverride.property.animationFillMode,
      canOverride.property.animationPlayState,
      canOverride.property.animationName
    ]),
    components: [
      'animation-duration',
      'animation-timing-function',
      'animation-delay',
      'animation-iteration-count',
      'animation-direction',
      'animation-fill-mode',
      'animation-play-state',
      'animation-name'
    ],
    breakUp: breakUp.multiplex(breakUp.animation),
    defaultValue: 'none',
    restore: restore.multiplex(restore.withoutDefaults),
    shorthand: true,
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.textQuotes,
      valueOptimizers.time,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ],
    vendorPrefixes: [
      '-moz-',
      '-o-',
      '-webkit-'
    ]
  },
  'animation-delay': {
    canOverride: canOverride.generic.time,
    componentOf: [
      'animation'
    ],
    defaultValue: '0s',
    intoMultiplexMode: 'real',
    valueOptimizers: [
      valueOptimizers.time,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ],
    vendorPrefixes: [
      '-moz-',
      '-o-',
      '-webkit-'
    ]
  },
  'animation-direction': {
    canOverride: canOverride.property.animationDirection,
    componentOf: [
      'animation'
    ],
    defaultValue: 'normal',
    intoMultiplexMode: 'real',
    vendorPrefixes: [
      '-moz-',
      '-o-',
      '-webkit-'
    ]
  },
  'animation-duration': {
    canOverride: canOverride.generic.time,
    componentOf: [
      'animation'
    ],
    defaultValue: '0s',
    intoMultiplexMode: 'real',
    keepUnlessDefault: 'animation-delay',
    valueOptimizers: [
      valueOptimizers.time,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ],
    vendorPrefixes: [
      '-moz-',
      '-o-',
      '-webkit-'
    ]
  },
  'animation-fill-mode': {
    canOverride: canOverride.property.animationFillMode,
    componentOf: [
      'animation'
    ],
    defaultValue: 'none',
    intoMultiplexMode: 'real',
    vendorPrefixes: [
      '-moz-',
      '-o-',
      '-webkit-'
    ]
  },
  'animation-iteration-count': {
    canOverride: canOverride.property.animationIterationCount,
    componentOf: [
      'animation'
    ],
    defaultValue: '1',
    intoMultiplexMode: 'real',
    vendorPrefixes: [
      '-moz-',
      '-o-',
      '-webkit-'
    ]
  },
  'animation-name': {
    canOverride: canOverride.property.animationName,
    componentOf: [
      'animation'
    ],
    defaultValue: 'none',
    intoMultiplexMode: 'real',
    valueOptimizers: [
      valueOptimizers.textQuotes
    ],
    vendorPrefixes: [
      '-moz-',
      '-o-',
      '-webkit-'
    ]
  },
  'animation-play-state': {
    canOverride: canOverride.property.animationPlayState,
    componentOf: [
      'animation'
    ],
    defaultValue: 'running',
    intoMultiplexMode: 'real',
    vendorPrefixes: [
      '-moz-',
      '-o-',
      '-webkit-'
    ]
  },
  'animation-timing-function': {
    canOverride: canOverride.generic.timingFunction,
    componentOf: [
      'animation'
    ],
    defaultValue: 'ease',
    intoMultiplexMode: 'real',
    vendorPrefixes: [
      '-moz-',
      '-o-',
      '-webkit-'
    ]
  },
  background: {
    canOverride: canOverride.generic.components([
      canOverride.generic.image,
      canOverride.property.backgroundPosition,
      canOverride.property.backgroundSize,
      canOverride.property.backgroundRepeat,
      canOverride.property.backgroundAttachment,
      canOverride.property.backgroundOrigin,
      canOverride.property.backgroundClip,
      canOverride.generic.color
    ]),
    components: [
      'background-image',
      'background-position',
      'background-size',
      'background-repeat',
      'background-attachment',
      'background-origin',
      'background-clip',
      'background-color'
    ],
    breakUp: breakUp.multiplex(breakUp.background),
    defaultValue: '0 0',
    propertyOptimizer: propertyOptimizers.background,
    restore: restore.multiplex(restore.background),
    shortestValue: '0',
    shorthand: true,
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.urlWhiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.zero,
      valueOptimizers.color,
      valueOptimizers.urlPrefix,
      valueOptimizers.urlQuotes
    ]
  },
  'background-attachment': {
    canOverride: canOverride.property.backgroundAttachment,
    componentOf: [
      'background'
    ],
    defaultValue: 'scroll',
    intoMultiplexMode: 'real'
  },
  'background-clip': {
    canOverride: canOverride.property.backgroundClip,
    componentOf: [
      'background'
    ],
    defaultValue: 'border-box',
    intoMultiplexMode: 'real',
    shortestValue: 'border-box'
  },
  'background-color': {
    canOverride: canOverride.generic.color,
    componentOf: [
      'background'
    ],
    defaultValue: 'transparent',
    intoMultiplexMode: 'real', // otherwise real color will turn into default since color appears in last multiplex only
    multiplexLastOnly: true,
    nonMergeableValue: 'none',
    shortestValue: 'red',
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.color
    ]
  },
  'background-image': {
    canOverride: canOverride.generic.image,
    componentOf: [
      'background'
    ],
    defaultValue: 'none',
    intoMultiplexMode: 'default',
    valueOptimizers: [
      valueOptimizers.urlWhiteSpace,
      valueOptimizers.urlPrefix,
      valueOptimizers.urlQuotes,
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero,
      valueOptimizers.color
    ]
  },
  'background-origin': {
    canOverride: canOverride.property.backgroundOrigin,
    componentOf: [
      'background'
    ],
    defaultValue: 'padding-box',
    intoMultiplexMode: 'real',
    shortestValue: 'border-box'
  },
  'background-position': {
    canOverride: canOverride.property.backgroundPosition,
    componentOf: [
      'background'
    ],
    defaultValue: ['0', '0'],
    doubleValues: true,
    intoMultiplexMode: 'real',
    shortestValue: '0',
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  'background-repeat': {
    canOverride: canOverride.property.backgroundRepeat,
    componentOf: [
      'background'
    ],
    defaultValue: ['repeat'],
    doubleValues: true,
    intoMultiplexMode: 'real'
  },
  'background-size': {
    canOverride: canOverride.property.backgroundSize,
    componentOf: [
      'background'
    ],
    defaultValue: ['auto'],
    doubleValues: true,
    intoMultiplexMode: 'real',
    shortestValue: '0 0',
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  bottom: {
    canOverride: canOverride.property.bottom,
    defaultValue: 'auto',
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  border: {
    breakUp: breakUp.border,
    canOverride: canOverride.generic.components([
      canOverride.generic.unit,
      canOverride.property.borderStyle,
      canOverride.generic.color
    ]),
    components: [
      'border-width',
      'border-style',
      'border-color'
    ],
    defaultValue: 'none',
    overridesShorthands: [
      'border-bottom',
      'border-left',
      'border-right',
      'border-top'
    ],
    restore: restore.withoutDefaults,
    shorthand: true,
    shorthandComponents: true,
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.zero,
      valueOptimizers.color
    ]
  },
  'border-bottom': {
    breakUp: breakUp.border,
    canOverride: canOverride.generic.components([
      canOverride.generic.unit,
      canOverride.property.borderStyle,
      canOverride.generic.color
    ]),
    components: [
      'border-bottom-width',
      'border-bottom-style',
      'border-bottom-color'
    ],
    defaultValue: 'none',
    restore: restore.withoutDefaults,
    shorthand: true,
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.zero,
      valueOptimizers.color
    ]
  },
  'border-bottom-color': {
    canOverride: canOverride.generic.color,
    componentOf: [
      'border-bottom',
      'border-color'
    ],
    defaultValue: 'none',
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.color
    ]
  },
  'border-bottom-left-radius': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'border-radius'
    ],
    defaultValue: '0',
    propertyOptimizer: propertyOptimizers.borderRadius,
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ],
    vendorPrefixes: [
      '-moz-',
      '-o-'
    ]
  },
  'border-bottom-right-radius': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'border-radius'
    ],
    defaultValue: '0',
    propertyOptimizer: propertyOptimizers.borderRadius,
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ],
    vendorPrefixes: [
      '-moz-',
      '-o-'
    ]
  },
  'border-bottom-style': {
    canOverride: canOverride.property.borderStyle,
    componentOf: [
      'border-bottom',
      'border-style'
    ],
    defaultValue: 'none'
  },
  'border-bottom-width': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'border-bottom',
      'border-width'
    ],
    defaultValue: 'medium',
    oppositeTo: 'border-top-width',
    shortestValue: '0',
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  'border-collapse': {
    canOverride: canOverride.property.borderCollapse,
    defaultValue: 'separate'
  },
  'border-color': {
    breakUp: breakUp.fourValues,
    canOverride: canOverride.generic.components([
      canOverride.generic.color,
      canOverride.generic.color,
      canOverride.generic.color,
      canOverride.generic.color
    ]),
    componentOf: [
      'border'
    ],
    components: [
      'border-top-color',
      'border-right-color',
      'border-bottom-color',
      'border-left-color'
    ],
    defaultValue: 'none',
    restore: restore.fourValues,
    shortestValue: 'red',
    shorthand: true,
    singleTypeComponents: true,
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.color
    ]
  },
  'border-left': {
    breakUp: breakUp.border,
    canOverride: canOverride.generic.components([
      canOverride.generic.unit,
      canOverride.property.borderStyle,
      canOverride.generic.color
    ]),
    components: [
      'border-left-width',
      'border-left-style',
      'border-left-color'
    ],
    defaultValue: 'none',
    restore: restore.withoutDefaults,
    shorthand: true,
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.zero,
      valueOptimizers.color
    ]
  },
  'border-left-color': {
    canOverride: canOverride.generic.color,
    componentOf: [
      'border-color',
      'border-left'
    ],
    defaultValue: 'none',
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.color
    ]
  },
  'border-left-style': {
    canOverride: canOverride.property.borderStyle,
    componentOf: [
      'border-left',
      'border-style'
    ],
    defaultValue: 'none'
  },
  'border-left-width': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'border-left',
      'border-width'
    ],
    defaultValue: 'medium',
    oppositeTo: 'border-right-width',
    shortestValue: '0',
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  'border-radius': {
    breakUp: breakUp.borderRadius,
    canOverride: canOverride.generic.components([
      canOverride.generic.unit,
      canOverride.generic.unit,
      canOverride.generic.unit,
      canOverride.generic.unit
    ]),
    components: [
      'border-top-left-radius',
      'border-top-right-radius',
      'border-bottom-right-radius',
      'border-bottom-left-radius'
    ],
    defaultValue: '0',
    propertyOptimizer: propertyOptimizers.borderRadius,
    restore: restore.borderRadius,
    shorthand: true,
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ],
    vendorPrefixes: [
      '-moz-',
      '-o-'
    ]
  },
  'border-right': {
    breakUp: breakUp.border,
    canOverride: canOverride.generic.components([
      canOverride.generic.unit,
      canOverride.property.borderStyle,
      canOverride.generic.color
    ]),
    components: [
      'border-right-width',
      'border-right-style',
      'border-right-color'
    ],
    defaultValue: 'none',
    restore: restore.withoutDefaults,
    shorthand: true,
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.color
    ]
  },
  'border-right-color': {
    canOverride: canOverride.generic.color,
    componentOf: [
      'border-color',
      'border-right'
    ],
    defaultValue: 'none',
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.color
    ]
  },
  'border-right-style': {
    canOverride: canOverride.property.borderStyle,
    componentOf: [
      'border-right',
      'border-style'
    ],
    defaultValue: 'none'
  },
  'border-right-width': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'border-right',
      'border-width'
    ],
    defaultValue: 'medium',
    oppositeTo: 'border-left-width',
    shortestValue: '0',
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  'border-style': {
    breakUp: breakUp.fourValues,
    canOverride: canOverride.generic.components([
      canOverride.property.borderStyle,
      canOverride.property.borderStyle,
      canOverride.property.borderStyle,
      canOverride.property.borderStyle
    ]),
    componentOf: [
      'border'
    ],
    components: [
      'border-top-style',
      'border-right-style',
      'border-bottom-style',
      'border-left-style'
    ],
    defaultValue: 'none',
    restore: restore.fourValues,
    shorthand: true,
    singleTypeComponents: true
  },
  'border-top': {
    breakUp: breakUp.border,
    canOverride: canOverride.generic.components([
      canOverride.generic.unit,
      canOverride.property.borderStyle,
      canOverride.generic.color
    ]),
    components: [
      'border-top-width',
      'border-top-style',
      'border-top-color'
    ],
    defaultValue: 'none',
    restore: restore.withoutDefaults,
    shorthand: true,
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.zero,
      valueOptimizers.color,
      valueOptimizers.unit
    ]
  },
  'border-top-color': {
    canOverride: canOverride.generic.color,
    componentOf: [
      'border-color',
      'border-top'
    ],
    defaultValue: 'none',
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.color
    ]
  },
  'border-top-left-radius': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'border-radius'
    ],
    defaultValue: '0',
    propertyOptimizer: propertyOptimizers.borderRadius,
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ],
    vendorPrefixes: [
      '-moz-',
      '-o-'
    ]
  },
  'border-top-right-radius': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'border-radius'
    ],
    defaultValue: '0',
    propertyOptimizer: propertyOptimizers.borderRadius,
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ],
    vendorPrefixes: [
      '-moz-',
      '-o-'
    ]
  },
  'border-top-style': {
    canOverride: canOverride.property.borderStyle,
    componentOf: [
      'border-style',
      'border-top'
    ],
    defaultValue: 'none'
  },
  'border-top-width': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'border-top',
      'border-width'
    ],
    defaultValue: 'medium',
    oppositeTo: 'border-bottom-width',
    shortestValue: '0',
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  'border-width': {
    breakUp: breakUp.fourValues,
    canOverride: canOverride.generic.components([
      canOverride.generic.unit,
      canOverride.generic.unit,
      canOverride.generic.unit,
      canOverride.generic.unit
    ]),
    componentOf: [
      'border'
    ],
    components: [
      'border-top-width',
      'border-right-width',
      'border-bottom-width',
      'border-left-width'
    ],
    defaultValue: 'medium',
    restore: restore.fourValues,
    shortestValue: '0',
    shorthand: true,
    singleTypeComponents: true,
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  'box-shadow': {
    propertyOptimizer: propertyOptimizers.boxShadow,
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero,
      valueOptimizers.color
    ],
    vendorPrefixes: [
      '-moz-',
      '-ms-',
      '-o-',
      '-webkit-'
    ]
  },
  clear: {
    canOverride: canOverride.property.clear,
    defaultValue: 'none'
  },
  clip: {
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  color: {
    canOverride: canOverride.generic.color,
    defaultValue: 'transparent',
    shortestValue: 'red',
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.color
    ]
  },
  'column-gap': {
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  cursor: {
    canOverride: canOverride.property.cursor,
    defaultValue: 'auto'
  },
  display: { canOverride: canOverride.property.display },
  filter: {
    propertyOptimizer: propertyOptimizers.filter,
    valueOptimizers: [
      valueOptimizers.fraction
    ]
  },
  float: {
    canOverride: canOverride.property.float,
    defaultValue: 'none'
  },
  font: {
    breakUp: breakUp.font,
    canOverride: canOverride.generic.components([
      canOverride.property.fontStyle,
      canOverride.property.fontVariant,
      canOverride.property.fontWeight,
      canOverride.property.fontStretch,
      canOverride.generic.unit,
      canOverride.generic.unit,
      canOverride.property.fontFamily
    ]),
    components: [
      'font-style',
      'font-variant',
      'font-weight',
      'font-stretch',
      'font-size',
      'line-height',
      'font-family'
    ],
    restore: restore.font,
    shorthand: true,
    valueOptimizers: [
      valueOptimizers.textQuotes
    ]
  },
  'font-family': {
    canOverride: canOverride.property.fontFamily,
    defaultValue: 'user|agent|specific',
    valueOptimizers: [
      valueOptimizers.textQuotes
    ]
  },
  'font-size': {
    canOverride: canOverride.generic.unit,
    defaultValue: 'medium',
    shortestValue: '0',
    valueOptimizers: [
      valueOptimizers.fraction
    ]
  },
  'font-stretch': {
    canOverride: canOverride.property.fontStretch,
    defaultValue: 'normal'
  },
  'font-style': {
    canOverride: canOverride.property.fontStyle,
    defaultValue: 'normal'
  },
  'font-variant': {
    canOverride: canOverride.property.fontVariant,
    defaultValue: 'normal'
  },
  'font-weight': {
    canOverride: canOverride.property.fontWeight,
    defaultValue: 'normal',
    propertyOptimizer: propertyOptimizers.fontWeight,
    shortestValue: '400'
  },
  gap: {
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  height: {
    canOverride: canOverride.generic.unit,
    defaultValue: 'auto',
    shortestValue: '0',
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  left: {
    canOverride: canOverride.property.left,
    defaultValue: 'auto',
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  'letter-spacing': {
    valueOptimizers: [
      valueOptimizers.fraction,
      valueOptimizers.zero
    ]
  },
  'line-height': {
    canOverride: canOverride.generic.unitOrNumber,
    defaultValue: 'normal',
    shortestValue: '0',
    valueOptimizers: [
      valueOptimizers.fraction,
      valueOptimizers.zero
    ]
  },
  'list-style': {
    canOverride: canOverride.generic.components([
      canOverride.property.listStyleType,
      canOverride.property.listStylePosition,
      canOverride.property.listStyleImage
    ]),
    components: [
      'list-style-type',
      'list-style-position',
      'list-style-image'
    ],
    breakUp: breakUp.listStyle,
    restore: restore.withoutDefaults,
    defaultValue: 'outside', // can't use 'disc' because that'd override default 'decimal' for <ol>
    shortestValue: 'none',
    shorthand: true
  },
  'list-style-image': {
    canOverride: canOverride.generic.image,
    componentOf: [
      'list-style'
    ],
    defaultValue: 'none'
  },
  'list-style-position': {
    canOverride: canOverride.property.listStylePosition,
    componentOf: [
      'list-style'
    ],
    defaultValue: 'outside',
    shortestValue: 'inside'
  },
  'list-style-type': {
    canOverride: canOverride.property.listStyleType,
    componentOf: [
      'list-style'
    ],
    // NOTE: we can't tell the real default value here, it's 'disc' for <ul> and 'decimal' for <ol>
    // this is a hack, but it doesn't matter because this value will be either overridden or
    // it will disappear at the final step anyway
    defaultValue: 'decimal|disc',
    shortestValue: 'none'
  },
  margin: {
    breakUp: breakUp.fourValues,
    canOverride: canOverride.generic.components([
      canOverride.generic.unit,
      canOverride.generic.unit,
      canOverride.generic.unit,
      canOverride.generic.unit
    ]),
    components: [
      'margin-top',
      'margin-right',
      'margin-bottom',
      'margin-left'
    ],
    defaultValue: '0',
    propertyOptimizer: propertyOptimizers.margin,
    restore: restore.fourValues,
    shorthand: true,
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  'margin-bottom': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'margin'
    ],
    defaultValue: '0',
    oppositeTo: 'margin-top',
    propertyOptimizer: propertyOptimizers.margin,
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  'margin-inline-end': {
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  'margin-inline-start': {
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  'margin-left': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'margin'
    ],
    defaultValue: '0',
    oppositeTo: 'margin-right',
    propertyOptimizer: propertyOptimizers.margin,
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  'margin-right': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'margin'
    ],
    defaultValue: '0',
    oppositeTo: 'margin-left',
    propertyOptimizer: propertyOptimizers.margin,
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  'margin-top': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'margin'
    ],
    defaultValue: '0',
    oppositeTo: 'margin-bottom',
    propertyOptimizer: propertyOptimizers.margin,
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  'max-height': {
    canOverride: canOverride.generic.unit,
    defaultValue: 'none',
    shortestValue: '0',
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  'max-width': {
    canOverride: canOverride.generic.unit,
    defaultValue: 'none',
    shortestValue: '0',
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  'min-height': {
    canOverride: canOverride.generic.unit,
    defaultValue: '0',
    shortestValue: '0',
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  'min-width': {
    canOverride: canOverride.generic.unit,
    defaultValue: '0',
    shortestValue: '0',
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  opacity: {
    valueOptimizers: [
      valueOptimizers.fraction,
      valueOptimizers.precision
    ]
  },
  outline: {
    canOverride: canOverride.generic.components([
      canOverride.generic.color,
      canOverride.property.outlineStyle,
      canOverride.generic.unit
    ]),
    components: [
      'outline-color',
      'outline-style',
      'outline-width'
    ],
    breakUp: breakUp.outline,
    restore: restore.withoutDefaults,
    defaultValue: '0',
    propertyOptimizer: propertyOptimizers.outline,
    shorthand: true,
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  'outline-color': {
    canOverride: canOverride.generic.color,
    componentOf: [
      'outline'
    ],
    defaultValue: 'invert',
    shortestValue: 'red',
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.color
    ]
  },
  'outline-style': {
    canOverride: canOverride.property.outlineStyle,
    componentOf: [
      'outline'
    ],
    defaultValue: 'none'
  },
  'outline-width': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'outline'
    ],
    defaultValue: 'medium',
    shortestValue: '0',
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  overflow: {
    canOverride: canOverride.property.overflow,
    defaultValue: 'visible'
  },
  'overflow-x': {
    canOverride: canOverride.property.overflow,
    defaultValue: 'visible'
  },
  'overflow-y': {
    canOverride: canOverride.property.overflow,
    defaultValue: 'visible'
  },
  padding: {
    breakUp: breakUp.fourValues,
    canOverride: canOverride.generic.components([
      canOverride.generic.unit,
      canOverride.generic.unit,
      canOverride.generic.unit,
      canOverride.generic.unit
    ]),
    components: [
      'padding-top',
      'padding-right',
      'padding-bottom',
      'padding-left'
    ],
    defaultValue: '0',
    propertyOptimizer: propertyOptimizers.padding,
    restore: restore.fourValues,
    shorthand: true,
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  'padding-bottom': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'padding'
    ],
    defaultValue: '0',
    oppositeTo: 'padding-top',
    propertyOptimizer: propertyOptimizers.padding,
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  'padding-left': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'padding'
    ],
    defaultValue: '0',
    oppositeTo: 'padding-right',
    propertyOptimizer: propertyOptimizers.padding,
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  'padding-right': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'padding'
    ],
    defaultValue: '0',
    oppositeTo: 'padding-left',
    propertyOptimizer: propertyOptimizers.padding,
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  'padding-top': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'padding'
    ],
    defaultValue: '0',
    oppositeTo: 'padding-bottom',
    propertyOptimizer: propertyOptimizers.padding,
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  position: {
    canOverride: canOverride.property.position,
    defaultValue: 'static'
  },
  right: {
    canOverride: canOverride.property.right,
    defaultValue: 'auto',
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  'row-gap': {
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  src: {
    valueOptimizers: [
      valueOptimizers.urlWhiteSpace,
      valueOptimizers.urlPrefix,
      valueOptimizers.urlQuotes
    ]
  },
  'stroke-width': {
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  'text-align': {
    canOverride: canOverride.property.textAlign,
    // NOTE: we can't tell the real default value here, as it depends on default text direction
    // this is a hack, but it doesn't matter because this value will be either overridden or
    // it will disappear anyway
    defaultValue: 'left|right'
  },
  'text-decoration': {
    canOverride: canOverride.property.textDecoration,
    defaultValue: 'none'
  },
  'text-indent': {
    canOverride: canOverride.property.textOverflow,
    defaultValue: 'none',
    valueOptimizers: [
      valueOptimizers.fraction,
      valueOptimizers.zero
    ]
  },
  'text-overflow': {
    canOverride: canOverride.property.textOverflow,
    defaultValue: 'none'
  },
  'text-shadow': {
    canOverride: canOverride.property.textShadow,
    defaultValue: 'none',
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.zero,
      valueOptimizers.color
    ]
  },
  top: {
    canOverride: canOverride.property.top,
    defaultValue: 'auto',
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  transform: {
    canOverride: canOverride.property.transform,
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.degrees,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ],
    vendorPrefixes: [
      '-moz-',
      '-ms-',
      '-o-',
      '-webkit-'
    ]
  },
  transition: {
    breakUp: breakUp.multiplex(breakUp.transition),
    canOverride: canOverride.generic.components([
      canOverride.property.transitionProperty,
      canOverride.generic.time,
      canOverride.generic.timingFunction,
      canOverride.generic.time
    ]),
    components: [
      'transition-property',
      'transition-duration',
      'transition-timing-function',
      'transition-delay'
    ],
    defaultValue: 'none',
    restore: restore.multiplex(restore.withoutDefaults),
    shorthand: true,
    valueOptimizers: [
      valueOptimizers.time,
      valueOptimizers.fraction
    ],
    vendorPrefixes: [
      '-moz-',
      '-ms-',
      '-o-',
      '-webkit-'
    ]
  },
  'transition-delay': {
    canOverride: canOverride.generic.time,
    componentOf: [
      'transition'
    ],
    defaultValue: '0s',
    intoMultiplexMode: 'real',
    valueOptimizers: [
      valueOptimizers.time
    ],
    vendorPrefixes: [
      '-moz-',
      '-ms-',
      '-o-',
      '-webkit-'
    ]
  },
  'transition-duration': {
    canOverride: canOverride.generic.time,
    componentOf: [
      'transition'
    ],
    defaultValue: '0s',
    intoMultiplexMode: 'real',
    keepUnlessDefault: 'transition-delay',
    valueOptimizers: [
      valueOptimizers.time,
      valueOptimizers.fraction
    ],
    vendorPrefixes: [
      '-moz-',
      '-ms-',
      '-o-',
      '-webkit-'
    ]
  },
  'transition-property': {
    canOverride: canOverride.generic.propertyName,
    componentOf: [
      'transition'
    ],
    defaultValue: 'all',
    intoMultiplexMode: 'placeholder',
    placeholderValue: '_', // it's a short value that won't match any property and still be a valid `transition-property`
    vendorPrefixes: [
      '-moz-',
      '-ms-',
      '-o-',
      '-webkit-'
    ]
  },
  'transition-timing-function': {
    canOverride: canOverride.generic.timingFunction,
    componentOf: [
      'transition'
    ],
    defaultValue: 'ease',
    intoMultiplexMode: 'real',
    vendorPrefixes: [
      '-moz-',
      '-ms-',
      '-o-',
      '-webkit-'
    ]
  },
  'vertical-align': {
    canOverride: canOverride.property.verticalAlign,
    defaultValue: 'baseline',
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  visibility: {
    canOverride: canOverride.property.visibility,
    defaultValue: 'visible'
  },
  '-webkit-tap-highlight-color': {
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.color
    ]
  },
  '-webkit-margin-end': {
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  'white-space': {
    canOverride: canOverride.property.whiteSpace,
    defaultValue: 'normal'
  },
  width: {
    canOverride: canOverride.generic.unit,
    defaultValue: 'auto',
    shortestValue: '0',
    valueOptimizers: [
      valueOptimizers.whiteSpace,
      valueOptimizers.fraction,
      valueOptimizers.precision,
      valueOptimizers.unit,
      valueOptimizers.zero
    ]
  },
  'z-index': {
    canOverride: canOverride.property.zIndex,
    defaultValue: 'auto'
  }
};

// generate vendor-prefixed configuration
var vendorPrefixedConfiguration = {};

function cloneDescriptor(propertyName, prefix) {
  var clonedDescriptor = override(configuration[propertyName], {});

  if ('componentOf' in clonedDescriptor) {
    clonedDescriptor.componentOf = clonedDescriptor.componentOf.map(function(shorthandName) {
      return prefix + shorthandName;
    });
  }

  if ('components' in clonedDescriptor) {
    clonedDescriptor.components = clonedDescriptor.components.map(function(longhandName) {
      return prefix + longhandName;
    });
  }

  if ('keepUnlessDefault' in clonedDescriptor) {
    clonedDescriptor.keepUnlessDefault = prefix + clonedDescriptor.keepUnlessDefault;
  }

  return clonedDescriptor;
}

for (var propertyName in configuration) {
  var descriptor = configuration[propertyName];

  if (!('vendorPrefixes' in descriptor)) {
    continue;
  }

  for (var i = 0; i < descriptor.vendorPrefixes.length; i++) {
    var prefix = descriptor.vendorPrefixes[i];
    var clonedDescriptor = cloneDescriptor(propertyName, prefix);
    delete clonedDescriptor.vendorPrefixes;

    vendorPrefixedConfiguration[prefix + propertyName] = clonedDescriptor;
  }

  delete descriptor.vendorPrefixes;
}

module.exports = override(configuration, vendorPrefixedConfiguration);

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LinuXploit