front_end/core/sdk/CSSMetadata.ts

// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

/*
 * Copyright (C) 2010 Nikita Vasilyev. All rights reserved.
 * Copyright (C) 2010 Joseph Pecoraro. All rights reserved.
 * Copyright (C) 2010 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the #name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

import * as Protocol from '../../generated/protocol.js';
import * as SupportedCSSProperties from '../../generated/SupportedCSSProperties.js';
import * as Common from '../common/common.js';

export class CSSMetadata {
  readonly #values: string[] = [];
  readonly #longhands = new Map<string, string[]>();
  readonly #shorthands = new Map<string, string[]>();
  readonly #inherited = new Set<string>();
  readonly #svgProperties = new Set<string>();
  readonly #propertyValues = new Map<string, string[]>();
  readonly #aliasesFor = new Map<string, string>();
  readonly #nameValuePresets: string[] = [];
  readonly #nameValuePresetsIncludingSVG: string[] = [];
  #valuesSet: Set<string>;

  constructor(properties: CSSPropertyDefinition[], aliasesFor: Map<string, string>) {
    this.#aliasesFor = aliasesFor;
    for (let i = 0; i < properties.length; ++i) {
      const property = properties[i];
      const propertyName = property.name;
      if (!CSS.supports(propertyName, 'initial')) {
        continue;
      }
      this.#values.push(propertyName);

      if (property.inherited) {
        this.#inherited.add(propertyName);
      }
      if (property.svg) {
        this.#svgProperties.add(propertyName);
      }

      const longhands = properties[i].longhands;
      if (longhands) {
        this.#longhands.set(propertyName, longhands);
        for (let j = 0; j < longhands.length; ++j) {
          const longhandName = longhands[j];
          let shorthands = this.#shorthands.get(longhandName);
          if (!shorthands) {
            shorthands = [];
            this.#shorthands.set(longhandName, shorthands);
          }
          shorthands.push(propertyName);
        }
      }
    }
    this.#values.sort(CSSMetadata.sortPrefixesAndCSSWideKeywordsToEnd);
    this.#valuesSet = new Set(this.#values);

    // Reads in auto-generated property names and #values from blink/public/renderer/core/css/css_properties.json5
    // treats _generatedPropertyValues as basis
    const propertyValueSets = new Map<string, Set<string>>();
    for (const [propertyName, basisValueObj] of Object.entries(SupportedCSSProperties.generatedPropertyValues)) {
      propertyValueSets.set(propertyName, new Set(basisValueObj.values));
    }
    // and add manually maintained map of extra prop-value pairs
    for (const [propertyName, extraValues] of extraPropertyValues) {
      const propertyValueSet = propertyValueSets.get(propertyName);
      if (propertyValueSet) {
        propertyValueSets.set(propertyName, propertyValueSet.union(extraValues));
      } else {
        propertyValueSets.set(propertyName, extraValues);
      }
    }
    // finally add common keywords to value sets and convert property #values
    // into arrays since callers expect arrays
    for (const [propertyName, values] of propertyValueSets) {
      for (const commonKeyword of CommonKeywords) {
        if (!values.has(commonKeyword) && CSS.supports(propertyName, commonKeyword)) {
          values.add(commonKeyword);
        }
      }

      this.#propertyValues.set(propertyName, [...values]);
    }

    for (const name of this.#valuesSet) {
      const values = this.specificPropertyValues(name)
                         .filter(value => CSS.supports(name, value))
                         .sort(CSSMetadata.sortPrefixesAndCSSWideKeywordsToEnd);
      const presets = values.map(value => `${name}: ${value}`);
      if (!this.isSVGProperty(name)) {
        this.#nameValuePresets.push(...presets);
      }
      this.#nameValuePresetsIncludingSVG.push(...presets);
    }
  }

  static isCSSWideKeyword(a: string): a is CSSWideKeyword {
    return CSSWideKeywords.includes(a as CSSWideKeyword);
  }

  static isPositionTryOrderKeyword(a: string): a is PositionTryOrderKeyword {
    return PositionTryOrderKeywords.includes(a as PositionTryOrderKeyword);
  }

  private static sortPrefixesAndCSSWideKeywordsToEnd(a: string, b: string): 1|- 1|0 {
    const aIsCSSWideKeyword = CSSMetadata.isCSSWideKeyword(a);
    const bIsCSSWideKeyword = CSSMetadata.isCSSWideKeyword(b);

    if (aIsCSSWideKeyword && !bIsCSSWideKeyword) {
      return 1;
    }
    if (!aIsCSSWideKeyword && bIsCSSWideKeyword) {
      return -1;
    }

    const aIsPrefixed = a.startsWith('-webkit-');
    const bIsPrefixed = b.startsWith('-webkit-');
    if (aIsPrefixed && !bIsPrefixed) {
      return 1;
    }
    if (!aIsPrefixed && bIsPrefixed) {
      return -1;
    }
    return a < b ? -1 : (a > b ? 1 : 0);
  }

  allProperties(): string[] {
    return this.#values;
  }

  aliasesFor(): Map<string, string> {
    return this.#aliasesFor;
  }

  nameValuePresets(includeSVG?: boolean): string[] {
    return includeSVG ? this.#nameValuePresetsIncludingSVG : this.#nameValuePresets;
  }

  isSVGProperty(name: string): boolean {
    name = name.toLowerCase();
    return this.#svgProperties.has(name);
  }

  getLonghands(shorthand: string): string[]|null {
    return this.#longhands.get(shorthand) || null;
  }

  getShorthands(longhand: string): string[]|null {
    return this.#shorthands.get(longhand) || null;
  }

  isColorAwareProperty(propertyName: string): boolean {
    return colorAwareProperties.has(propertyName.toLowerCase()) || this.isCustomProperty(propertyName.toLowerCase());
  }

  isFontFamilyProperty(propertyName: string): boolean {
    return propertyName.toLowerCase() === 'font-family';
  }

  isAngleAwareProperty(propertyName: string): boolean {
    const lowerCasedName = propertyName.toLowerCase();
    // TODO: @Yisi, parse hsl(), hsla(), hwb() and lch()
    // See also https://drafts.csswg.org/css-color/#hue-syntax
    return colorAwareProperties.has(lowerCasedName) || angleAwareProperties.has(lowerCasedName);
  }

  isGridAreaDefiningProperty(propertyName: string): boolean {
    propertyName = propertyName.toLowerCase();
    return propertyName === 'grid' || propertyName === 'grid-template' || propertyName === 'grid-template-areas';
  }

  isGridColumnNameAwareProperty(propertyName: string): boolean {
    propertyName = propertyName.toLowerCase();
    return ['grid-column', 'grid-column-start', 'grid-column-end'].includes(propertyName);
  }

  isGridRowNameAwareProperty(propertyName: string): boolean {
    propertyName = propertyName.toLowerCase();
    return ['grid-row', 'grid-row-start', 'grid-row-end'].includes(propertyName);
  }

  isGridAreaNameAwareProperty(propertyName: string): boolean {
    propertyName = propertyName.toLowerCase();
    return propertyName === 'grid-area';
  }

  isGridNameAwareProperty(propertyName: string): boolean {
    return this.isGridAreaNameAwareProperty(propertyName) || this.isGridColumnNameAwareProperty(propertyName) ||
        this.isGridRowNameAwareProperty(propertyName);
  }

  isLengthProperty(propertyName: string): boolean {
    propertyName = propertyName.toLowerCase();
    if (propertyName === 'line-height') {
      return false;
    }
    return distanceProperties.has(propertyName) || propertyName.startsWith('margin') ||
        propertyName.startsWith('padding') || propertyName.indexOf('width') !== -1 ||
        propertyName.indexOf('height') !== -1;
  }

  isBezierAwareProperty(propertyName: string): boolean {
    propertyName = propertyName.toLowerCase();
    return bezierAwareProperties.has(propertyName) || this.isCustomProperty(propertyName);
  }

  isFontAwareProperty(propertyName: string): boolean {
    propertyName = propertyName.toLowerCase();
    return fontAwareProperties.has(propertyName) || this.isCustomProperty(propertyName);
  }

  isCustomProperty(propertyName: string): boolean {
    return propertyName.startsWith('--');
  }

  isShadowProperty(propertyName: string): boolean {
    propertyName = propertyName.toLowerCase();
    return propertyName === 'box-shadow' || propertyName === 'text-shadow' || propertyName === '-webkit-box-shadow';
  }

  isStringProperty(propertyName: string): boolean {
    propertyName = propertyName.toLowerCase();
    // TODO(crbug.com/1033910): Generalize this to all CSS properties
    // that accept <string> #values.
    return propertyName === 'content';
  }

  canonicalPropertyName(name: string): string {
    if (this.isCustomProperty(name)) {
      return name;
    }
    name = name.toLowerCase();

    const aliasFor = this.#aliasesFor.get(name);
    if (aliasFor) {
      return aliasFor;
    }

    if (!name || name.length < 9 || name.charAt(0) !== '-') {
      return name;
    }
    const match = name.match(/(?:-webkit-)(.+)/);
    if (!match || !this.#valuesSet.has(match[1])) {
      return name;
    }
    return match[1];
  }

  isCSSPropertyName(propertyName: string): boolean {
    propertyName = propertyName.toLowerCase();
    if ((propertyName.startsWith('--') && propertyName.length > 2) || propertyName.startsWith('-moz-') ||
        propertyName.startsWith('-ms-') || propertyName.startsWith('-o-') || propertyName.startsWith('-webkit-')) {
      return true;
    }
    return this.#valuesSet.has(propertyName);
  }

  isPropertyInherited(propertyName: string): boolean {
    propertyName = propertyName.toLowerCase();
    return propertyName.startsWith('--') || this.#inherited.has(this.canonicalPropertyName(propertyName)) ||
        this.#inherited.has(propertyName);
  }

  private specificPropertyValues(propertyName: string): string[] {
    const unprefixedName = propertyName.replace(/^-webkit-/, '');
    const propertyValues = this.#propertyValues;
    // #propertyValues acts like cache; missing properties are added with possible common keywords
    let keywords: (string[]|undefined) = propertyValues.get(propertyName) || propertyValues.get(unprefixedName);
    if (!keywords) {
      keywords = [];
      for (const commonKeyword of CommonKeywords) {
        if (CSS.supports(propertyName, commonKeyword)) {
          keywords.push(commonKeyword);
        }
      }
      propertyValues.set(propertyName, keywords);
    }
    return keywords;
  }

  getPropertyValues(propertyName: string): string[] {
    propertyName = propertyName.toLowerCase();
    // Add CSS-wide keywords to all properties.
    const acceptedKeywords = [...this.specificPropertyValues(propertyName), ...CSSWideKeywords];

    if (this.isColorAwareProperty(propertyName)) {
      acceptedKeywords.push('currentColor');
      for (const color of Common.Color.Nicknames.keys()) {
        acceptedKeywords.push(color);
      }
    }
    return acceptedKeywords.sort(CSSMetadata.sortPrefixesAndCSSWideKeywordsToEnd);
  }

  propertyUsageWeight(property: string): number {
    return Weight.get(property) || Weight.get(this.canonicalPropertyName(property)) || 0;
  }

  getValuePreset(key: string, value: string): {
    text: string,
    startColumn: number,
    endColumn: number,
  }|null {
    const values = valuePresets.get(key);
    let text: string|(string | null | undefined) = values ? values.get(value) : null;
    if (!text) {
      return null;
    }
    let startColumn: number = text.length;
    let endColumn: number = text.length;
    if (text) {
      startColumn = text.indexOf('|');
      endColumn = text.lastIndexOf('|');
      endColumn = startColumn === endColumn ? endColumn : endColumn - 1;
      text = text.replace(/\|/g, '');
    }
    return {text, startColumn, endColumn};
  }

  isHighlightPseudoType(pseudoType: Protocol.DOM.PseudoType): boolean {
    return (
        pseudoType === Protocol.DOM.PseudoType.Highlight || pseudoType === Protocol.DOM.PseudoType.Selection ||
        pseudoType === Protocol.DOM.PseudoType.TargetText || pseudoType === Protocol.DOM.PseudoType.GrammarError ||
        pseudoType === Protocol.DOM.PseudoType.SpellingError);
  }
}

export const CubicBezierKeywordValues = new Map([
  ['linear', 'cubic-bezier(0, 0, 1, 1)'],
  ['ease', 'cubic-bezier(0.25, 0.1, 0.25, 1)'],
  ['ease-in', 'cubic-bezier(0.42, 0, 1, 1)'],
  ['ease-in-out', 'cubic-bezier(0.42, 0, 0.58, 1)'],
  ['ease-out', 'cubic-bezier(0, 0, 0.58, 1)'],
]);

/** CSS-wide keywords. **/
export const enum CSSWideKeyword {
  INHERIT = 'inherit',
  INITIAL = 'initial',
  REVERT = 'revert',
  REVERT_LAYER = 'revert-layer',
  UNSET = 'unset',
}
/**
 * Spec: https://drafts.csswg.org/css-cascade/#defaulting-keywords
 * https://drafts.csswg.org/css-cascade-5/#revert-layer
 **/
export const CSSWideKeywords: CSSWideKeyword[] = [
  CSSWideKeyword.INHERIT,
  CSSWideKeyword.INITIAL,
  CSSWideKeyword.REVERT,
  CSSWideKeyword.REVERT_LAYER,
  CSSWideKeyword.UNSET,
];

/** https://www.w3.org/TR/css-anchor-position-1/#typedef-try-size **/
export const enum PositionTryOrderKeyword {
  NORMAL = 'normal',
  MOST_HEIGHT = 'most-height',
  MOST_WIDTH = 'most-width',
  MOST_BLOCK_SIZE = 'most-block-size',
  MOST_INLINE_SIZE = 'most-inline-size',
}

export const PositionTryOrderKeywords: PositionTryOrderKeyword[] = [
  PositionTryOrderKeyword.NORMAL,
  PositionTryOrderKeyword.MOST_HEIGHT,
  PositionTryOrderKeyword.MOST_WIDTH,
  PositionTryOrderKeyword.MOST_BLOCK_SIZE,
  PositionTryOrderKeyword.MOST_INLINE_SIZE,
];

export const VariableNameRegex = /(\s*--.*?)/gs;
export const VariableRegex = /(var\(\s*--.*?\))/gs;
export const CustomVariableRegex = /(var\(*--[\w\d]+-([\w]+-[\w]+)\))/g;
export const URLRegex = /url\(\s*('.+?'|".+?"|[^)]+)\s*\)/g;

/**
 * Matches an instance of a grid area 'row' definition.
 * 'grid-template-areas', e.g.
 *    "a a ."
 *
 * 'grid', 'grid-template', e.g.
 *    [track-#name] "a a ." minmax(50px, auto) [track-#name]
 */
export const GridAreaRowRegex = /((?:\[[\w\- ]+\]\s*)*(?:"[^"]+"|'[^']+'))[^'"\[]*\[?[^'"\[]*/;

let cssMetadataInstance: CSSMetadata|null = null;

export function cssMetadata(): CSSMetadata {
  if (!cssMetadataInstance) {
    const supportedProperties = (SupportedCSSProperties.generatedProperties as CSSPropertyDefinition[]);
    cssMetadataInstance = new CSSMetadata(supportedProperties, SupportedCSSProperties.generatedAliasesFor);
  }
  return cssMetadataInstance;
}

/**
 * The pipe character '|' indicates where text selection should be set.
 */
const imageValuePresetMap = new Map([
  ['linear-gradient', 'linear-gradient(|45deg, black, transparent|)'],
  ['radial-gradient', 'radial-gradient(|black, transparent|)'],
  ['repeating-linear-gradient', 'repeating-linear-gradient(|45deg, black, transparent 100px|)'],
  ['repeating-radial-gradient', 'repeating-radial-gradient(|black, transparent 100px|)'],
  ['url', 'url(||)'],
]);

const filterValuePresetMap = new Map([
  ['blur', 'blur(|1px|)'],
  ['brightness', 'brightness(|0.5|)'],
  ['contrast', 'contrast(|0.5|)'],
  ['drop-shadow', 'drop-shadow(|2px 4px 6px black|)'],
  ['grayscale', 'grayscale(|1|)'],
  ['hue-rotate', 'hue-rotate(|45deg|)'],
  ['invert', 'invert(|1|)'],
  ['opacity', 'opacity(|0.5|)'],
  ['saturate', 'saturate(|0.5|)'],
  ['sepia', 'sepia(|1|)'],
  ['url', 'url(||)'],
]);

const cornerShapeValuePresetMap = new Map([
  ['superellipse(0.5)', 'superellipse(|0.5|)'],
  ['superellipse(infinity)', 'superellipse(|infinity|)'],
]);

const valuePresets = new Map([
  ['filter', filterValuePresetMap], ['backdrop-filter', filterValuePresetMap], ['background', imageValuePresetMap],
  ['background-image', imageValuePresetMap], ['-webkit-mask-image', imageValuePresetMap],
  [
    'transform',
    new Map([
      ['scale', 'scale(|1.5|)'],
      ['scaleX', 'scaleX(|1.5|)'],
      ['scaleY', 'scaleY(|1.5|)'],
      ['scale3d', 'scale3d(|1.5, 1.5, 1.5|)'],
      ['rotate', 'rotate(|45deg|)'],
      ['rotateX', 'rotateX(|45deg|)'],
      ['rotateY', 'rotateY(|45deg|)'],
      ['rotateZ', 'rotateZ(|45deg|)'],
      ['rotate3d', 'rotate3d(|1, 1, 1, 45deg|)'],
      ['skew', 'skew(|10deg, 10deg|)'],
      ['skewX', 'skewX(|10deg|)'],
      ['skewY', 'skewY(|10deg|)'],
      ['translate', 'translate(|10px, 10px|)'],
      ['translateX', 'translateX(|10px|)'],
      ['translateY', 'translateY(|10px|)'],
      ['translateZ', 'translateZ(|10px|)'],
      ['translate3d', 'translate3d(|10px, 10px, 10px|)'],
      ['matrix', 'matrix(|1, 0, 0, 1, 0, 0|)'],
      ['matrix3d', 'matrix3d(|1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1|)'],
      ['perspective', 'perspective(|10px|)'],
    ]),
  ],
  ['corner-shape', cornerShapeValuePresetMap],
  [
    'font-variant-alternates',
    new Map([
      ['stylistic', 'stylistic(||)'],
      ['styleset', 'styleset(||)'],
      ['character-variant', 'character-variant(||)'],
      ['swash', 'swash(||)'],
      ['ornaments', 'ornaments(||)'],
      ['annotation', 'annotation(||)'],
    ]),
  ]
]);

const distanceProperties = new Set<string>([
  'background-position',
  'border-spacing',
  'bottom',
  'font-size',
  'height',
  'left',
  'letter-spacing',
  'max-height',
  'max-width',
  'min-height',
  'min-width',
  'right',
  'text-indent',
  'top',
  'width',
  'word-spacing',
  'grid-row-gap',
  'grid-column-gap',
  'row-gap',
]);

const bezierAwareProperties = new Set<string>([
  'animation',
  'animation-timing-function',
  'transition',
  'transition-timing-function',
  '-webkit-animation',
  '-webkit-animation-timing-function',
  '-webkit-transition',
  '-webkit-transition-timing-function',
]);

const fontAwareProperties =
    new Set<string>(['font-size', 'line-height', 'font-weight', 'font-family', 'letter-spacing']);

const colorAwareProperties = new Set<string>([
  'accent-color',
  'background',
  'background-color',
  'background-image',
  'border',
  'border-color',
  'border-image',
  'border-image-source',
  'border-bottom',
  'border-bottom-color',
  'border-left',
  'border-left-color',
  'border-right',
  'border-right-color',
  'border-top',
  'border-top-color',
  'border-block',
  'border-block-color',
  'border-block-end',
  'border-block-end-color',
  'border-block-start',
  'border-block-start-color',
  'border-inline',
  'border-inline-color',
  'border-inline-end',
  'border-inline-end-color',
  'border-inline-start',
  'border-inline-start-color',
  'box-shadow',
  'caret-color',
  'color',
  'column-rule',
  'column-rule-color',
  'content',
  'fill',
  'list-style-image',
  'mask',
  'mask-image',
  'mask-border',
  'mask-border-source',
  'outline',
  'outline-color',
  'scrollbar-color',
  'stop-color',
  'stroke',
  'text-decoration-color',
  'text-shadow',
  'text-emphasis',
  'text-emphasis-color',
  '-webkit-border-after',
  '-webkit-border-after-color',
  '-webkit-border-before',
  '-webkit-border-before-color',
  '-webkit-border-end',
  '-webkit-border-end-color',
  '-webkit-border-start',
  '-webkit-border-start-color',
  '-webkit-box-reflect',
  '-webkit-box-shadow',
  '-webkit-column-rule-color',
  '-webkit-mask',
  '-webkit-mask-box-image',
  '-webkit-mask-box-image-source',
  '-webkit-mask-image',
  '-webkit-tap-highlight-color',
  '-webkit-text-emphasis',
  '-webkit-text-emphasis-color',
  '-webkit-text-fill-color',
  '-webkit-text-stroke',
  '-webkit-text-stroke-color',
  // For SVG
  'flood-color',
  'lighting-color',
  'stop-color',
]);

// In addition to `_colorAwareProperties`, the following properties contain CSS <angle> units.
const angleAwareProperties = new Set<string>([
  '-webkit-border-image',
  'transform',
  '-webkit-transform',
  'rotate',
  'filter',
  '-webkit-filter',
  'backdrop-filter',
  'offset',
  'offset-rotate',
  'font-style',
]);

const textEmphasisPosition = new Set([
  'over',
  'under',
  'over right',  // Initial value
  'over left',
  'under right',
  'under left',
]);

// https://drafts.csswg.org/css-text-decor/#text-emphasis-style-property
const textEmphasisStyle = new Set([
  'none', 'dot', 'circle', 'double-circle', 'triangle', 'sesame', 'filled', 'open', 'dot open', 'circle open',
  'double-circle open', 'triangle open', 'sesame open',
  '"❤️"',  // <string>
]);

// manually maintained list of property #values to add into autocomplete list
const extraPropertyValues = new Map<string, Set<string>>([
  ['background-repeat', new Set(['repeat', 'repeat-x', 'repeat-y', 'no-repeat', 'space', 'round'])],
  ['content', new Set(['normal', 'close-quote', 'no-close-quote', 'no-open-quote', 'open-quote'])],
  ['baseline-shift', new Set(['baseline'])],
  ['max-height', new Set(['min-content', 'max-content', '-webkit-fill-available', 'fit-content', 'stretch'])],
  ['color', new Set(['black'])],
  ['background-color', new Set(['white'])],
  ['box-shadow', new Set(['inset'])],
  ['text-shadow', new Set(['0 0 black'])],
  ['-webkit-writing-mode', new Set(['horizontal-tb', 'vertical-rl', 'vertical-lr'])],
  ['writing-mode', new Set(['lr', 'rl', 'tb', 'lr-tb', 'rl-tb', 'tb-rl'])],
  ['page-break-inside', new Set(['avoid'])],
  ['cursor', new Set(['-webkit-zoom-in', '-webkit-zoom-out', '-webkit-grab', '-webkit-grabbing'])],
  ['border-width', new Set(['medium', 'thick', 'thin'])],
  ['border-style', new Set(['hidden', 'inset', 'groove', 'ridge', 'outset', 'dotted', 'dashed', 'solid', 'double'])],
  ['size', new Set(['a3', 'a4', 'a5', 'b4', 'b5', 'landscape', 'ledger', 'legal', 'letter', 'portrait'])],
  ['overflow', new Set(['hidden', 'visible', 'overlay', 'scroll', 'clip'])],
  ['overscroll-behavior', new Set(['contain'])],
  ['text-rendering', new Set(['optimizeSpeed', 'optimizeLegibility', 'geometricPrecision'])],
  ['text-align', new Set(['-webkit-auto', '-webkit-match-parent'])],
  ['clip-path', new Set(['circle', 'ellipse', 'inset', 'polygon', 'url'])],
  ['color-interpolation', new Set(['sRGB', 'linearRGB'])],
  ['word-wrap', new Set(['normal', 'break-word'])],
  ['font-weight', new Set(['100', '200', '300', '400', '500', '600', '700', '800', '900'])],
  ['text-emphasis', textEmphasisStyle],
  ['-webkit-text-emphasis', textEmphasisStyle],
  ['color-rendering', new Set(['optimizeSpeed', 'optimizeQuality'])],
  ['-webkit-text-combine', new Set(['horizontal'])],
  ['text-orientation', new Set(['sideways-right'])],
  [
    'outline',
    new Set(['inset', 'groove', 'ridge', 'outset', 'dotted', 'dashed', 'solid', 'double', 'medium', 'thick', 'thin']),
  ],
  [
    'font',
    new Set([
      'caption',
      'icon',
      'menu',
      'message-box',
      'small-caption',
      '-webkit-mini-control',
      '-webkit-small-control',
      '-webkit-control',
      'status-bar',
    ]),
  ],
  ['dominant-baseline', new Set(['text-before-edge', 'text-after-edge', 'use-script', 'no-change', 'reset-size'])],
  ['text-emphasis-position', textEmphasisPosition],
  ['-webkit-text-emphasis-position', textEmphasisPosition],
  ['alignment-baseline', new Set(['before-edge', 'after-edge', 'text-before-edge', 'text-after-edge', 'hanging'])],
  ['page-break-before', new Set(['left', 'right', 'always', 'avoid'])],
  ['border-image', new Set(['repeat', 'stretch', 'space', 'round'])],
  [
    'text-decoration',
    new Set(['blink', 'line-through', 'overline', 'underline', 'wavy', 'double', 'solid', 'dashed', 'dotted']),
  ],
  // List taken from https://drafts.csswg.org/css-fonts-4/#generic-font-families
  [
    'font-family',
    new Set([
      'serif',
      'sans-serif',
      'cursive',
      'fantasy',
      'monospace',
      'system-ui',
      'emoji',
      'math',
      'fangsong',
      'ui-serif',
      'ui-sans-serif',
      'ui-monospace',
      'ui-rounded',
      '-webkit-body',
    ]),
  ],
  ['zoom', new Set(['normal'])],
  ['max-width', new Set(['min-content', 'max-content', '-webkit-fill-available', 'fit-content', 'stretch'])],
  ['-webkit-font-smoothing', new Set(['antialiased', 'subpixel-antialiased'])],
  [
    'border',
    new Set([
      'hidden',
      'inset',
      'groove',
      'ridge',
      'outset',
      'dotted',
      'dashed',
      'solid',
      'double',
      'medium',
      'thick',
      'thin',
    ]),
  ],
  [
    'font-variant',
    new Set([
      'small-caps',
      'normal',
      'common-ligatures',
      'no-common-ligatures',
      'discretionary-ligatures',
      'no-discretionary-ligatures',
      'historical-ligatures',
      'no-historical-ligatures',
      'contextual',
      'no-contextual',
      'all-small-caps',
      'petite-caps',
      'all-petite-caps',
      'unicase',
      'titling-caps',
      'lining-nums',
      'oldstyle-nums',
      'proportional-nums',
      'tabular-nums',
      'diagonal-fractions',
      'stacked-fractions',
      'ordinal',
      'slashed-zero',
      'jis78',
      'jis83',
      'jis90',
      'jis04',
      'simplified',
      'traditional',
      'full-width',
      'proportional-width',
      'ruby',
    ]),
  ],
  [
    'font-variant-alternates',
    new Set(['historical-forms', 'stylistic', 'styleset', 'character-variant', 'swash', 'ornaments', 'annotation'])
  ],
  ['vertical-align', new Set(['top', 'bottom', '-webkit-baseline-middle'])],
  ['page-break-after', new Set(['left', 'right', 'always', 'avoid'])],
  ['text-emphasis-style', textEmphasisStyle],
  ['-webkit-text-emphasis-style', textEmphasisStyle],
  [
    'transform',
    new Set([
      'scale',      'scaleX',     'scaleY',      'scale3d', 'rotate',   'rotateX',     'rotateY',
      'rotateZ',    'rotate3d',   'skew',        'skewX',   'skewY',    'translate',   'translateX',
      'translateY', 'translateZ', 'translate3d', 'matrix',  'matrix3d', 'perspective',
    ]),
  ],
  [
    'align-content',
    new Set([
      'normal',
      'baseline',
      'space-between',
      'space-around',
      'space-evenly',
      'stretch',
      'center',
      'start',
      'end',
      'flex-start',
      'flex-end',
    ]),
  ],
  [
    'justify-content',
    new Set([
      'normal',
      'space-between',
      'space-around',
      'space-evenly',
      'stretch',
      'center',
      'start',
      'end',
      'flex-start',
      'flex-end',
      'left',
      'right',
    ]),
  ],
  [
    'place-content',
    new Set([
      'normal',
      'space-between',
      'space-around',
      'space-evenly',
      'stretch',
      'center',
      'start',
      'end',
      'flex-start',
      'flex-end',
      'baseline',
    ]),
  ],
  [
    'align-items',
    new Set([
      'normal',
      'stretch',
      'baseline',
      'center',
      'start',
      'end',
      'self-start',
      'self-end',
      'flex-start',
      'flex-end',
      'anchor-center',
    ]),
  ],
  [
    'justify-items',
    new Set([
      'normal',
      'stretch',
      'baseline',
      'center',
      'start',
      'end',
      'self-start',
      'self-end',
      'flex-start',
      'flex-end',
      'left',
      'right',
      'legacy',
      'anchor-center',
    ]),
  ],
  [
    'place-items',
    new Set([
      'normal',
      'stretch',
      'baseline',
      'center',
      'start',
      'end',
      'self-start',
      'self-end',
      'flex-start',
      'flex-end',
      'anchor-center',
    ]),
  ],
  [
    'align-self',
    new Set([
      'normal',
      'stretch',
      'baseline',
      'center',
      'start',
      'end',
      'self-start',
      'self-end',
      'flex-start',
      'flex-end',
      'anchor-center',
    ]),
  ],
  [
    'justify-self',
    new Set([
      'normal',
      'stretch',
      'baseline',
      'center',
      'start',
      'end',
      'self-start',
      'self-end',
      'flex-start',
      'flex-end',
      'left',
      'right',
      'anchor-center',
    ]),
  ],
  [
    'place-self',
    new Set([
      'normal',
      'stretch',
      'baseline',
      'center',
      'start',
      'end',
      'self-start',
      'self-end',
      'flex-start',
      'flex-end',
      'anchor-center',
    ]),
  ],
  ['perspective-origin', new Set(['left', 'center', 'right', 'top', 'bottom'])],
  ['transform-origin', new Set(['left', 'center', 'right', 'top', 'bottom'])],
  ['transition-timing-function', new Set(['cubic-bezier', 'steps'])],
  ['animation-timing-function', new Set(['cubic-bezier', 'steps'])],
  ['-webkit-backface-visibility', new Set(['visible', 'hidden'])],
  ['-webkit-column-break-after', new Set(['always', 'avoid'])],
  ['-webkit-column-break-before', new Set(['always', 'avoid'])],
  ['-webkit-column-break-inside', new Set(['avoid'])],
  ['-webkit-column-span', new Set(['all'])],
  ['-webkit-column-gap', new Set(['normal'])],
  [
    'filter',
    new Set([
      'url',
      'blur',
      'brightness',
      'contrast',
      'drop-shadow',
      'grayscale',
      'hue-rotate',
      'invert',
      'opacity',
      'saturate',
      'sepia',
    ]),
  ],
  [
    'backdrop-filter',
    new Set([
      'url',
      'blur',
      'brightness',
      'contrast',
      'drop-shadow',
      'grayscale',
      'hue-rotate',
      'invert',
      'opacity',
      'saturate',
      'sepia',
    ]),
  ],
  ['grid-template-columns', new Set(['min-content', 'max-content'])],
  ['grid-template-rows', new Set(['min-content', 'max-content'])],
  ['grid-auto-flow', new Set(['dense'])],
  [
    'background',
    new Set([
      'repeat',
      'repeat-x',
      'repeat-y',
      'no-repeat',
      'top',
      'bottom',
      'left',
      'right',
      'center',
      'fixed',
      'local',
      'scroll',
      'space',
      'round',
      'border-box',
      'content-box',
      'padding-box',
      'linear-gradient',
      'radial-gradient',
      'repeating-linear-gradient',
      'repeating-radial-gradient',
      'url',
    ]),
  ],
  [
    'background-image',
    new Set(['linear-gradient', 'radial-gradient', 'repeating-linear-gradient', 'repeating-radial-gradient', 'url']),
  ],
  ['background-position', new Set(['top', 'bottom', 'left', 'right', 'center'])],
  ['background-position-x', new Set(['left', 'right', 'center'])],
  ['background-position-y', new Set(['top', 'bottom', 'center'])],
  ['background-repeat-x', new Set(['repeat', 'no-repeat'])],
  ['background-repeat-y', new Set(['repeat', 'no-repeat'])],
  [
    'border-bottom',
    new Set([
      'hidden',
      'inset',
      'groove',
      'outset',
      'ridge',
      'dotted',
      'dashed',
      'solid',
      'double',
      'medium',
      'thick',
      'thin',
    ]),
  ],
  [
    'border-left',
    new Set([
      'hidden',
      'inset',
      'groove',
      'outset',
      'ridge',
      'dotted',
      'dashed',
      'solid',
      'double',
      'medium',
      'thick',
      'thin',
    ]),
  ],
  [
    'border-right',
    new Set([
      'hidden',
      'inset',
      'groove',
      'outset',
      'ridge',
      'dotted',
      'dashed',
      'solid',
      'double',
      'medium',
      'thick',
      'thin',
    ]),
  ],
  [
    'border-top',
    new Set([
      'hidden',
      'inset',
      'groove',
      'outset',
      'ridge',
      'dotted',
      'dashed',
      'solid',
      'double',
      'medium',
      'thick',
      'thin',
    ]),
  ],
  ['buffered-rendering', new Set(['static', 'dynamic'])],
  ['color-interpolation-filters', new Set(['srgb', 'linearrgb'])],
  [
    'column-rule',
    new Set([
      'hidden',
      'inset',
      'groove',
      'outset',
      'ridge',
      'dotted',
      'dashed',
      'solid',
      'double',
      'medium',
      'thick',
      'thin',
    ]),
  ],
  ['flex-flow', new Set(['nowrap', 'row', 'row-reverse', 'column', 'column-reverse', 'wrap', 'wrap-reverse'])],
  ['height', new Set(['-webkit-fill-available', 'stretch'])],
  ['inline-size', new Set(['-webkit-fill-available', 'min-content', 'max-content', 'fit-content'])],
  [
    'list-style',
    new Set([
      'outside',
      'inside',
      'disc',
      'circle',
      'square',
      'decimal',
      'decimal-leading-zero',
      'arabic-indic',
      'bengali',
      'cambodian',
      'khmer',
      'devanagari',
      'gujarati',
      'gurmukhi',
      'kannada',
      'lao',
      'malayalam',
      'mongolian',
      'myanmar',
      'oriya',
      'persian',
      'urdu',
      'telugu',
      'tibetan',
      'thai',
      'lower-roman',
      'upper-roman',
      'lower-greek',
      'lower-alpha',
      'lower-latin',
      'upper-alpha',
      'upper-latin',
      'cjk-earthly-branch',
      'cjk-heavenly-stem',
      'ethiopic-halehame',
      'ethiopic-halehame-am',
      'ethiopic-halehame-ti-er',
      'ethiopic-halehame-ti-et',
      'hangul',
      'hangul-consonant',
      'korean-hangul-formal',
      'korean-hanja-formal',
      'korean-hanja-informal',
      'hebrew',
      'armenian',
      'lower-armenian',
      'upper-armenian',
      'georgian',
      'cjk-ideographic',
      'simp-chinese-formal',
      'simp-chinese-informal',
      'trad-chinese-formal',
      'trad-chinese-informal',
      'hiragana',
      'katakana',
      'hiragana-iroha',
      'katakana-iroha',
    ]),
  ],
  ['max-block-size', new Set(['-webkit-fill-available', 'min-content', 'max-content', 'fit-content'])],
  ['max-inline-size', new Set(['-webkit-fill-available', 'min-content', 'max-content', 'fit-content'])],
  ['min-block-size', new Set(['-webkit-fill-available', 'min-content', 'max-content', 'fit-content'])],
  ['min-height', new Set(['-webkit-fill-available', 'min-content', 'max-content', 'fit-content', 'stretch'])],
  ['min-inline-size', new Set(['-webkit-fill-available', 'min-content', 'max-content', 'fit-content'])],
  ['min-width', new Set(['-webkit-fill-available', 'min-content', 'max-content', 'fit-content', 'stretch'])],
  ['object-position', new Set(['top', 'bottom', 'left', 'right', 'center'])],
  ['shape-outside', new Set(['border-box', 'content-box', 'padding-box', 'margin-box'])],
  [
    '-webkit-appearance',
    new Set([
      'checkbox',
      'radio',
      'push-button',
      'square-button',
      'button',
      'inner-spin-button',
      'listbox',
      'media-slider',
      'media-sliderthumb',
      'media-volume-slider',
      'media-volume-sliderthumb',
      'menulist',
      'menulist-button',
      'meter',
      'progress-bar',
      'slider-horizontal',
      'slider-vertical',
      'sliderthumb-horizontal',
      'sliderthumb-vertical',
      'searchfield',
      'searchfield-cancel-button',
      'textfield',
      'textarea',
    ]),
  ],
  [
    '-webkit-border-after',
    new Set([
      'hidden',
      'inset',
      'groove',
      'outset',
      'ridge',
      'dotted',
      'dashed',
      'solid',
      'double',
      'medium',
      'thick',
      'thin',
    ]),
  ],
  [
    '-webkit-border-after-style',
    new Set(['hidden', 'inset', 'groove', 'outset', 'ridge', 'dotted', 'dashed', 'solid', 'double']),
  ],
  ['-webkit-border-after-width', new Set(['medium', 'thick', 'thin'])],
  [
    '-webkit-border-before',
    new Set([
      'hidden',
      'inset',
      'groove',
      'outset',
      'ridge',
      'dotted',
      'dashed',
      'solid',
      'double',
      'medium',
      'thick',
      'thin',
    ]),
  ],
  [
    '-webkit-border-before-style',
    new Set(['hidden', 'inset', 'groove', 'outset', 'ridge', 'dotted', 'dashed', 'solid', 'double']),
  ],
  ['-webkit-border-before-width', new Set(['medium', 'thick', 'thin'])],
  [
    '-webkit-border-end',
    new Set([
      'hidden',
      'inset',
      'groove',
      'outset',
      'ridge',
      'dotted',
      'dashed',
      'solid',
      'double',
      'medium',
      'thick',
      'thin',
    ]),
  ],
  [
    '-webkit-border-end-style',
    new Set(['hidden', 'inset', 'groove', 'outset', 'ridge', 'dotted', 'dashed', 'solid', 'double']),
  ],
  ['-webkit-border-end-width', new Set(['medium', 'thick', 'thin'])],
  [
    '-webkit-border-start',
    new Set([
      'hidden',
      'inset',
      'groove',
      'outset',
      'ridge',
      'dotted',
      'dashed',
      'solid',
      'double',
      'medium',
      'thick',
      'thin',
    ]),
  ],
  [
    '-webkit-border-start-style',
    new Set(['hidden', 'inset', 'groove', 'outset', 'ridge', 'dotted', 'dashed', 'solid', 'double']),
  ],
  ['-webkit-border-start-width', new Set(['medium', 'thick', 'thin'])],
  ['-webkit-logical-height', new Set(['-webkit-fill-available', 'min-content', 'max-content', 'fit-content'])],
  ['-webkit-logical-width', new Set(['-webkit-fill-available', 'min-content', 'max-content', 'fit-content'])],
  ['-webkit-mask-box-image', new Set(['repeat', 'stretch', 'space', 'round'])],
  ['-webkit-mask-box-image-repeat', new Set(['repeat', 'stretch', 'space', 'round'])],
  ['-webkit-mask-clip', new Set(['text', 'border', 'border-box', 'content', 'content-box', 'padding', 'padding-box'])],
  [
    '-webkit-mask-composite',
    new Set([
      'clear',
      'copy',
      'source-over',
      'source-in',
      'source-out',
      'source-atop',
      'destination-over',
      'destination-in',
      'destination-out',
      'destination-atop',
      'xor',
      'plus-lighter',
    ]),
  ],
  [
    '-webkit-mask-image',
    new Set(['linear-gradient', 'radial-gradient', 'repeating-linear-gradient', 'repeating-radial-gradient', 'url']),
  ],
  ['-webkit-mask-origin', new Set(['border', 'border-box', 'content', 'content-box', 'padding', 'padding-box'])],
  ['-webkit-mask-position', new Set(['top', 'bottom', 'left', 'right', 'center'])],
  ['-webkit-mask-position-x', new Set(['left', 'right', 'center'])],
  ['-webkit-mask-position-y', new Set(['top', 'bottom', 'center'])],
  ['-webkit-mask-repeat', new Set(['repeat', 'repeat-x', 'repeat-y', 'no-repeat', 'space', 'round'])],
  ['-webkit-mask-size', new Set(['contain', 'cover'])],
  ['-webkit-max-logical-height', new Set(['-webkit-fill-available', 'min-content', 'max-content', 'fit-content'])],
  ['-webkit-max-logical-width', new Set(['-webkit-fill-available', 'min-content', 'max-content', 'fit-content'])],
  ['-webkit-min-logical-height', new Set(['-webkit-fill-available', 'min-content', 'max-content', 'fit-content'])],
  ['-webkit-min-logical-width', new Set(['-webkit-fill-available', 'min-content', 'max-content', 'fit-content'])],
  ['-webkit-perspective-origin-x', new Set(['left', 'right', 'center'])],
  ['-webkit-perspective-origin-y', new Set(['top', 'bottom', 'center'])],
  ['-webkit-text-decorations-in-effect', new Set(['blink', 'line-through', 'overline', 'underline'])],
  ['-webkit-text-stroke', new Set(['medium', 'thick', 'thin'])],
  ['-webkit-text-stroke-width', new Set(['medium', 'thick', 'thin'])],
  ['-webkit-transform-origin-x', new Set(['left', 'right', 'center'])],
  ['-webkit-transform-origin-y', new Set(['top', 'bottom', 'center'])],
  ['width', new Set(['-webkit-fill-available', 'stretch'])],
  ['contain-intrinsic-width', new Set(['auto none', 'auto 100px'])],
  ['contain-intrinsic-height', new Set(['auto none', 'auto 100px'])],
  ['contain-intrinsic-size', new Set(['auto none', 'auto 100px'])],
  ['contain-intrinsic-inline-size', new Set(['auto none', 'auto 100px'])],
  ['contain-intrinsic-block-size', new Set(['auto none', 'auto 100px'])],
  // Due to some compatibility issues[1] with Chrome's implementation[2],
  // only a few legacy values are added here.
  // [1]: https://github.com/w3c/csswg-drafts/issues/9102#issuecomment-1807453214
  // [2]: https://chromium-review.googlesource.com/c/chromium/src/+/4232738
  [
    'white-space',
    new Set([
      'normal',        // equal to: `collapse wrap`
      'pre',           // equal to: `preserve nowrap`
      'pre-wrap',      // equal to: `preserve wrap`
      'pre-line',      // equal to: `preserve-breaks wrap`
      'nowrap',        // equal to: `collapse nowrap`
      'break-spaces',  // equal to: `break-spaces wrap`, Chrome 76, crbug.com/767634#c28
    ]),
  ],
  // https://drafts.csswg.org/css-inline-3/#text-box-edge
  // Now we're going to allow the following rule:
  // auto | [ text | cap | ex ] [ text | alphabetic ]?
  // ideographic and ideographic-ink are not implemented yet.
  // We don't add values like `cap text` because that is equivalent to `text`.
  [
    'text-box-edge',
    new Set([
      'auto',
      'text',
      'cap',
      'ex',
      'text alphabetic',
      'cap alphabetic',
      'ex alphabetic',
    ]),
  ],
  [
    'corner-shape',
    new Set([
      'round',
      'scoop',
      'bevel',
      'notch',
      'square',
      'squircle',
      'superellipse(0.5)',
      'superellipse(infinity)',
    ]),
  ],
]);

// Weight of CSS properties based on their usage from https://www.chromestatus.com/metrics/css/popularity
const Weight = new Map([
  ['align-content', 57],
  ['align-items', 129],
  ['align-self', 55],
  ['animation', 175],
  ['animation-delay', 114],
  ['animation-direction', 113],
  ['animation-duration', 137],
  ['animation-fill-mode', 132],
  ['animation-iteration-count', 124],
  ['animation-name', 139],
  ['animation-play-state', 104],
  ['animation-timing-function', 141],
  ['backface-visibility', 123],
  ['background', 260],
  ['background-attachment', 119],
  ['background-clip', 165],
  ['background-color', 259],
  ['background-image', 246],
  ['background-origin', 107],
  ['background-position', 237],
  ['background-position-x', 108],
  ['background-position-y', 93],
  ['background-repeat', 234],
  ['background-size', 203],
  ['border', 263],
  ['border-bottom', 233],
  ['border-bottom-color', 190],
  ['border-bottom-left-radius', 186],
  ['border-bottom-right-radius', 185],
  ['border-bottom-style', 150],
  ['border-bottom-width', 179],
  ['border-collapse', 209],
  ['border-color', 226],
  ['border-image', 89],
  ['border-image-outset', 50],
  ['border-image-repeat', 49],
  ['border-image-slice', 58],
  ['border-image-source', 32],
  ['border-image-width', 52],
  ['border-left', 221],
  ['border-left-color', 174],
  ['border-left-style', 142],
  ['border-left-width', 172],
  ['border-radius', 224],
  ['border-right', 223],
  ['border-right-color', 182],
  ['border-right-style', 130],
  ['border-right-width', 178],
  ['border-spacing', 198],
  ['border-style', 206],
  ['border-top', 231],
  ['border-top-color', 192],
  ['border-top-left-radius', 187],
  ['border-top-right-radius', 189],
  ['border-top-style', 152],
  ['border-top-width', 180],
  ['border-width', 214],
  ['bottom', 227],
  ['box-shadow', 213],
  ['box-sizing', 216],
  ['caption-side', 96],
  ['clear', 229],
  ['clip', 173],
  ['clip-rule', 5],
  ['color', 256],
  ['content', 219],
  ['counter-increment', 111],
  ['counter-reset', 110],
  ['cursor', 250],
  ['direction', 176],
  ['display', 262],
  ['empty-cells', 99],
  ['fill', 140],
  ['fill-opacity', 82],
  ['fill-rule', 22],
  ['filter', 160],
  ['flex', 133],
  ['flex-basis', 66],
  ['flex-direction', 85],
  ['flex-flow', 94],
  ['flex-grow', 112],
  ['flex-shrink', 61],
  ['flex-wrap', 68],
  ['float', 252],
  ['font', 211],
  ['font-family', 254],
  ['font-kerning', 18],
  ['font-size', 264],
  ['font-stretch', 77],
  ['font-style', 220],
  ['font-variant', 161],
  ['font-weight', 257],
  ['height', 266],
  ['image-rendering', 90],
  ['justify-content', 127],
  ['left', 248],
  ['letter-spacing', 188],
  ['line-height', 244],
  ['list-style', 215],
  ['list-style-image', 145],
  ['list-style-position', 149],
  ['list-style-type', 199],
  ['margin', 267],
  ['margin-bottom', 241],
  ['margin-left', 243],
  ['margin-right', 238],
  ['margin-top', 253],
  ['mask', 20],
  ['max-height', 205],
  ['max-width', 225],
  ['min-height', 217],
  ['min-width', 218],
  ['object-fit', 33],
  ['opacity', 251],
  ['order', 117],
  ['orphans', 146],
  ['outline', 222],
  ['outline-color', 153],
  ['outline-offset', 147],
  ['outline-style', 151],
  ['outline-width', 148],
  ['overflow', 255],
  ['overflow-wrap', 105],
  ['overflow-x', 184],
  ['overflow-y', 196],
  ['padding', 265],
  ['padding-bottom', 230],
  ['padding-left', 235],
  ['padding-right', 232],
  ['padding-top', 240],
  ['page', 8],
  ['page-break-after', 120],
  ['page-break-before', 69],
  ['page-break-inside', 121],
  ['perspective', 92],
  ['perspective-origin', 103],
  ['pointer-events', 183],
  ['position', 261],
  ['quotes', 158],
  ['resize', 168],
  ['right', 245],
  ['shape-rendering', 38],
  ['size', 64],
  ['speak', 118],
  ['src', 170],
  ['stop-color', 42],
  ['stop-opacity', 31],
  ['stroke', 98],
  ['stroke-dasharray', 36],
  ['stroke-dashoffset', 3],
  ['stroke-linecap', 30],
  ['stroke-linejoin', 21],
  ['stroke-miterlimit', 12],
  ['stroke-opacity', 34],
  ['stroke-width', 87],
  ['table-layout', 171],
  ['tab-size', 46],
  ['text-align', 260],
  ['text-anchor', 35],
  ['text-decoration', 247],
  ['text-indent', 207],
  ['text-overflow', 204],
  ['text-rendering', 155],
  ['text-shadow', 208],
  ['text-transform', 202],
  ['top', 258],
  ['touch-action', 80],
  ['transform', 181],
  ['transform-origin', 162],
  ['transform-style', 86],
  ['transition', 193],
  ['transition-delay', 134],
  ['transition-duration', 135],
  ['transition-property', 131],
  ['transition-timing-function', 122],
  ['unicode-bidi', 156],
  ['unicode-range', 136],
  ['vertical-align', 236],
  ['visibility', 242],
  ['-webkit-appearance', 191],
  ['-webkit-backface-visibility', 154],
  ['-webkit-background-clip', 164],
  ['-webkit-background-origin', 40],
  ['-webkit-background-size', 163],
  ['-webkit-border-end', 9],
  ['-webkit-border-horizontal-spacing', 81],
  ['-webkit-border-image', 75],
  ['-webkit-border-radius', 212],
  ['-webkit-border-start', 10],
  ['-webkit-border-start-color', 16],
  ['-webkit-border-start-width', 13],
  ['-webkit-border-vertical-spacing', 43],
  ['-webkit-box-align', 101],
  ['-webkit-box-direction', 51],
  ['-webkit-box-flex', 128],
  ['-webkit-box-ordinal-group', 91],
  ['-webkit-box-orient', 144],
  ['-webkit-box-pack', 106],
  ['-webkit-box-reflect', 39],
  ['-webkit-box-shadow', 210],
  ['-webkit-column-break-inside', 60],
  ['-webkit-column-count', 84],
  ['-webkit-column-gap', 76],
  ['-webkit-column-rule', 25],
  ['-webkit-column-rule-color', 23],
  ['-webkit-columns', 44],
  ['-webkit-column-span', 29],
  ['-webkit-column-width', 47],
  ['-webkit-filter', 159],
  ['-webkit-font-feature-settings', 59],
  ['-webkit-font-smoothing', 177],
  ['-webkit-line-break', 45],
  ['-webkit-line-clamp', 126],
  ['-webkit-margin-after', 67],
  ['-webkit-margin-before', 70],
  ['-webkit-margin-collapse', 14],
  ['-webkit-margin-end', 65],
  ['-webkit-margin-start', 100],
  ['-webkit-mask', 19],
  ['-webkit-mask-box-image', 72],
  ['-webkit-mask-image', 88],
  ['-webkit-mask-position', 54],
  ['-webkit-mask-repeat', 63],
  ['-webkit-mask-size', 79],
  ['-webkit-padding-after', 15],
  ['-webkit-padding-before', 28],
  ['-webkit-padding-end', 48],
  ['-webkit-padding-start', 73],
  ['-webkit-print-color-adjust', 83],
  ['-webkit-rtl-ordering', 7],
  ['-webkit-tap-highlight-color', 169],
  ['-webkit-text-emphasis-color', 11],
  ['-webkit-text-fill-color', 71],
  ['-webkit-text-security', 17],
  ['-webkit-text-stroke', 56],
  ['-webkit-text-stroke-color', 37],
  ['-webkit-text-stroke-width', 53],
  ['-webkit-user-drag', 95],
  ['-webkit-user-modify', 62],
  ['-webkit-user-select', 194],
  ['-webkit-writing-mode', 4],
  ['white-space', 228],
  ['widows', 115],
  ['width', 268],
  ['will-change', 74],
  ['word-break', 166],
  ['word-spacing', 157],
  ['word-wrap', 197],
  ['writing-mode', 41],
  ['z-index', 239],
  ['zoom', 200],
]);

// Common keywords to CSS properties
const CommonKeywords = ['auto', 'none'];

export interface CSSPropertyDefinition {
  name: string;
  longhands: string[]|null;
  inherited: boolean|null;
  svg: boolean|null;
}