index.js

'use strict';

// Copied from https://facebook.github.io/react/docs/dom-elements.html
var map = {
  // Specials
  for: 'htmlFor',
  class: 'className',

  // HTML attributes
  accept: 'accept',
  acceptcharset: 'acceptCharset',
  accesskey: 'accessKey',
  action: 'action',
  allowfullscreen: 'allowFullScreen',
  allowtransparency: 'allowTransparency',
  alt: 'alt',
  async: 'async',
  autocomplete: 'autoComplete',
  autofocus: 'autoFocus',
  autoplay: 'autoPlay',
  capture: 'capture',
  cellpadding: 'cellPadding',
  cellspacing: 'cellSpacing',
  challenge: 'challenge',
  charset: 'charSet',
  checked: 'checked',
  cite: 'cite',
  classid: 'classID',
  classname: 'className',
  colspan: 'colSpan',
  cols: 'cols',
  content: 'content',
  contenteditable: 'contentEditable',
  contextmenu: 'contextMenu',
  controls: 'controls',
  coords: 'coords',
  crossorigin: 'crossOrigin',
  data: 'data',
  datetime: 'dateTime',
  default: 'default',
  defer: 'defer',
  dir: 'dir',
  disabled: 'disabled',
  download: 'download',
  draggable: 'draggable',
  enctype: 'encType',
  form: 'form',
  formaction: 'formAction',
  formenctype: 'formEncType',
  formmethod: 'formMethod',
  formnovalidate: 'formNoValidate',
  formtarget: 'formTarget',
  frameborder: 'frameBorder',
  headers: 'headers',
  height: 'height',
  hidden: 'hidden',
  high: 'high',
  href: 'href',
  hreflang: 'hrefLang',
  htmlfor: 'htmlFor',
  httpequiv: 'httpEquiv',
  icon: 'icon',
  id: 'id',
  inputmode: 'inputMode',
  integrity: 'integrity',
  is: 'is',
  keyparams: 'keyParams',
  keytype: 'keyType',
  kind: 'kind',
  label: 'label',
  lang: 'lang',
  list: 'list',
  loop: 'loop',
  low: 'low',
  manifest: 'manifest',
  marginheight: 'marginHeight',
  marginwidth: 'marginWidth',
  max: 'max',
  maxlength: 'maxLength',
  media: 'media',
  mediagroup: 'mediaGroup',
  method: 'method',
  min: 'min',
  minlength: 'minLength',
  multiple: 'multiple',
  muted: 'muted',
  name: 'name',
  novalidate: 'noValidate',
  nonce: 'nonce',
  open: 'open',
  optimum: 'optimum',
  pattern: 'pattern',
  placeholder: 'placeholder',
  poster: 'poster',
  preload: 'preload',
  profile: 'profile',
  radiogroup: 'radioGroup',
  readonly: 'readOnly',
  rel: 'rel',
  required: 'required',
  reversed: 'reversed',
  role: 'role',
  rowspan: 'rowSpan',
  rows: 'rows',
  sandbox: 'sandbox',
  scope: 'scope',
  scoped: 'scoped',
  scrolling: 'scrolling',
  seamless: 'seamless',
  selected: 'selected',
  shape: 'shape',
  size: 'size',
  sizes: 'sizes',
  span: 'span',
  spellcheck: 'spellCheck',
  src: 'src',
  srcdoc: 'srcDoc',
  srclang: 'srcLang',
  srcset: 'srcSet',
  start: 'start',
  step: 'step',
  style: 'style',
  summary: 'summary',
  tabindex: 'tabIndex',
  target: 'target',
  title: 'title',
  type: 'type',
  usemap: 'useMap',
  value: 'value',
  width: 'width',
  wmode: 'wmode',
  wrap: 'wrap',

  // SVG attributes
  accentheight: 'accentHeight',
  accumulate: 'accumulate',
  additive: 'additive',
  alignmentbaseline: 'alignmentBaseline',
  allowreorder: 'allowReorder',
  alphabetic: 'alphabetic',
  amplitude: 'amplitude',
  arabicform: 'arabicForm',
  ascent: 'ascent',
  attributename: 'attributeName',
  attributetype: 'attributeType',
  autoreverse: 'autoReverse',
  azimuth: 'azimuth',
  basefrequency: 'baseFrequency',
  baseprofile: 'baseProfile',
  baselineshift: 'baselineShift',
  bbox: 'bbox',
  begin: 'begin',
  bias: 'bias',
  by: 'by',
  calcmode: 'calcMode',
  capheight: 'capHeight',
  clip: 'clip',
  clippath: 'clipPath',
  clippathunits: 'clipPathUnits',
  cliprule: 'clipRule',
  colorinterpolation: 'colorInterpolation',
  colorinterpolationfilters: 'colorInterpolationFilters',
  colorprofile: 'colorProfile',
  colorrendering: 'colorRendering',
  contentscripttype: 'contentScriptType',
  contentstyletype: 'contentStyleType',
  cursor: 'cursor',
  cx: 'cx',
  cy: 'cy',
  d: 'd',
  decelerate: 'decelerate',
  descent: 'descent',
  diffuseconstant: 'diffuseConstant',
  direction: 'direction',
  display: 'display',
  divisor: 'divisor',
  dominantbaseline: 'dominantBaseline',
  dur: 'dur',
  dx: 'dx',
  dy: 'dy',
  edgemode: 'edgeMode',
  elevation: 'elevation',
  enablebackground: 'enableBackground',
  end: 'end',
  exponent: 'exponent',
  externalresourcesrequired: 'externalResourcesRequired',
  fill: 'fill',
  fillopacity: 'fillOpacity',
  fillrule: 'fillRule',
  filter: 'filter',
  filterres: 'filterRes',
  filterunits: 'filterUnits',
  floodcolor: 'floodColor',
  floodopacity: 'floodOpacity',
  focusable: 'focusable',
  fontfamily: 'fontFamily',
  fontsize: 'fontSize',
  fontsizeadjust: 'fontSizeAdjust',
  fontstretch: 'fontStretch',
  fontstyle: 'fontStyle',
  fontvariant: 'fontVariant',
  fontweight: 'fontWeight',
  format: 'format',
  from: 'from',
  fx: 'fx',
  fy: 'fy',
  g1: 'g1',
  g2: 'g2',
  glyphname: 'glyphName',
  glyphorientationhorizontal: 'glyphOrientationHorizontal',
  glyphorientationvertical: 'glyphOrientationVertical',
  glyphref: 'glyphRef',
  gradienttransform: 'gradientTransform',
  gradientunits: 'gradientUnits',
  hanging: 'hanging',
  horizadvx: 'horizAdvX',
  horizoriginx: 'horizOriginX',
  ideographic: 'ideographic',
  imagerendering: 'imageRendering',
  in: 'in',
  in2: 'in2',
  intercept: 'intercept',
  k: 'k',
  k1: 'k1',
  k2: 'k2',
  k3: 'k3',
  k4: 'k4',
  kernelmatrix: 'kernelMatrix',
  kernelunitlength: 'kernelUnitLength',
  kerning: 'kerning',
  keypoints: 'keyPoints',
  keysplines: 'keySplines',
  keytimes: 'keyTimes',
  lengthadjust: 'lengthAdjust',
  letterspacing: 'letterSpacing',
  lightingcolor: 'lightingColor',
  limitingconeangle: 'limitingConeAngle',
  local: 'local',
  markerend: 'markerEnd',
  markerheight: 'markerHeight',
  markermid: 'markerMid',
  markerstart: 'markerStart',
  markerunits: 'markerUnits',
  markerwidth: 'markerWidth',
  mask: 'mask',
  maskcontentunits: 'maskContentUnits',
  maskunits: 'maskUnits',
  mathematical: 'mathematical',
  mode: 'mode',
  numoctaves: 'numOctaves',
  offset: 'offset',
  opacity: 'opacity',
  operator: 'operator',
  order: 'order',
  orient: 'orient',
  orientation: 'orientation',
  origin: 'origin',
  overflow: 'overflow',
  overlineposition: 'overlinePosition',
  overlinethickness: 'overlineThickness',
  paintorder: 'paintOrder',
  panose1: 'panose1',
  pathlength: 'pathLength',
  patterncontentunits: 'patternContentUnits',
  patterntransform: 'patternTransform',
  patternunits: 'patternUnits',
  pointerevents: 'pointerEvents',
  points: 'points',
  pointsatx: 'pointsAtX',
  pointsaty: 'pointsAtY',
  pointsatz: 'pointsAtZ',
  preservealpha: 'preserveAlpha',
  preserveaspectratio: 'preserveAspectRatio',
  primitiveunits: 'primitiveUnits',
  r: 'r',
  radius: 'radius',
  refx: 'refX',
  refy: 'refY',
  renderingintent: 'renderingIntent',
  repeatcount: 'repeatCount',
  repeatdur: 'repeatDur',
  requiredextensions: 'requiredExtensions',
  requiredfeatures: 'requiredFeatures',
  restart: 'restart',
  result: 'result',
  rotate: 'rotate',
  rx: 'rx',
  ry: 'ry',
  scale: 'scale',
  seed: 'seed',
  shaperendering: 'shapeRendering',
  slope: 'slope',
  spacing: 'spacing',
  specularconstant: 'specularConstant',
  specularexponent: 'specularExponent',
  speed: 'speed',
  spreadmethod: 'spreadMethod',
  startoffset: 'startOffset',
  stddeviation: 'stdDeviation',
  stemh: 'stemh',
  stemv: 'stemv',
  stitchtiles: 'stitchTiles',
  stopcolor: 'stopColor',
  stopopacity: 'stopOpacity',
  strikethroughposition: 'strikethroughPosition',
  strikethroughthickness: 'strikethroughThickness',
  string: 'string',
  stroke: 'stroke',
  strokedasharray: 'strokeDasharray',
  strokedashoffset: 'strokeDashoffset',
  strokelinecap: 'strokeLinecap',
  strokelinejoin: 'strokeLinejoin',
  strokemiterlimit: 'strokeMiterlimit',
  strokeopacity: 'strokeOpacity',
  strokewidth: 'strokeWidth',
  surfacescale: 'surfaceScale',
  systemlanguage: 'systemLanguage',
  tablevalues: 'tableValues',
  targetx: 'targetX',
  targety: 'targetY',
  textanchor: 'textAnchor',
  textdecoration: 'textDecoration',
  textlength: 'textLength',
  textrendering: 'textRendering',
  to: 'to',
  transform: 'transform',
  u1: 'u1',
  u2: 'u2',
  underlineposition: 'underlinePosition',
  underlinethickness: 'underlineThickness',
  unicode: 'unicode',
  unicodebidi: 'unicodeBidi',
  unicoderange: 'unicodeRange',
  unitsperem: 'unitsPerEm',
  valphabetic: 'vAlphabetic',
  vhanging: 'vHanging',
  videographic: 'vIdeographic',
  vmathematical: 'vMathematical',
  values: 'values',
  vectoreffect: 'vectorEffect',
  version: 'version',
  vertadvy: 'vertAdvY',
  vertoriginx: 'vertOriginX',
  vertoriginy: 'vertOriginY',
  viewbox: 'viewBox',
  viewtarget: 'viewTarget',
  visibility: 'visibility',
  widths: 'widths',
  wordspacing: 'wordSpacing',
  writingmode: 'writingMode',
  x: 'x',
  x1: 'x1',
  x2: 'x2',
  xchannelselector: 'xChannelSelector',
  xheight: 'xHeight',
  xlinkactuate: 'xlinkActuate',
  xlinkarcrole: 'xlinkArcrole',
  xlinkhref: 'xlinkHref',
  xlinkrole: 'xlinkRole',
  xlinkshow: 'xlinkShow',
  xlinktitle: 'xlinkTitle',
  xlinktype: 'xlinkType',
  xmlns: 'xmlns',
  xmlnsxlink: 'xmlnsXlink',
  xmlbase: 'xmlBase',
  xmllang: 'xmlLang',
  xmlspace: 'xmlSpace',
  y: 'y',
  y1: 'y1',
  y2: 'y2',
  ychannelselector: 'yChannelSelector',
  z: 'z',
  zoomandpan: 'zoomAndPan',

  // Events
  onabort: 'onAbort',
  onanimationend: 'onAnimationEnd',
  onanimationiteration: 'onAnimationIteration',
  onanimationstart: 'onAnimationStart',
  onblur: 'onBlur',
  oncanplay: 'onCanPlay',
  oncanplaythrough: 'onCanPlayThrough',
  onchange: 'onChange',
  onclick: 'onClick',
  oncompositionend: 'onCompositionEnd',
  oncompositionstart: 'onCompositionStart',
  oncompositionupdate: 'onCompositionUpdate',
  oncontextmenu: 'onContextMenu',
  oncopy: 'onCopy',
  oncut: 'onCut',
  ondoubleclick: 'onDoubleClick',
  ondrag: 'onDrag',
  ondragend: 'onDragEnd',
  ondragenter: 'onDragEnter',
  ondragexit: 'onDragExit',
  ondragleave: 'onDragLeave',
  ondragover: 'onDragOver',
  ondragstart: 'onDragStart',
  ondrop: 'onDrop',
  ondurationchange: 'onDurationChange',
  onemptied: 'onEmptied',
  onencrypted: 'onEncrypted',
  onended: 'onEnded',
  onerror: 'onError',
  onfocus: 'onFocus',
  oninput: 'onInput',
  onkeydown: 'onKeyDown',
  onkeypress: 'onKeyPress',
  onkeyup: 'onKeyUp',
  onload: 'onLoad',
  onloadeddata: 'onLoadedData',
  onloadedmetadata: 'onLoadedMetadata',
  onloadstart: 'onLoadStart',
  onmousedown: 'onMouseDown',
  onmouseenter: 'onMouseEnter',
  onmouseleave: 'onMouseLeave',
  onmousemove: 'onMouseMove',
  onmouseout: 'onMouseOut',
  onmouseover: 'onMouseOver',
  onmouseup: 'onMouseUp',
  onpaste: 'onPaste',
  onpause: 'onPause',
  onplay: 'onPlay',
  onplaying: 'onPlaying',
  onprogress: 'onProgress',
  onratechange: 'onRateChange',
  onscroll: 'onScroll',
  onseeked: 'onSeeked',
  onseeking: 'onSeeking',
  onselect: 'onSelect',
  onstalled: 'onStalled',
  onsubmit: 'onSubmit',
  onsuspend: 'onSuspend',
  ontimeupdate: 'onTimeUpdate',
  ontouchcancel: 'onTouchCancel',
  ontouchend: 'onTouchEnd',
  ontouchmove: 'onTouchMove',
  ontouchstart: 'onTouchStart',
  ontransitionend: 'onTransitionEnd',
  onvolumechange: 'onVolumeChange',
  onwaiting: 'onWaiting',
  onwheel: 'onWheel'
};

var extraCharRegex = /[-:]/g;

var convert = function (attr) {
  if (/^(data-|aria-)/.test(attr)) {
    return attr;
  }
  var key = attr.replace(extraCharRegex, '').toLowerCase();
  return map[key] || attr;
};

module.exports = convert;
module.exports.convert = convert;