79 lines
1.9 KiB
JavaScript
79 lines
1.9 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.getPrefix = getPrefix;
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exports.browserPrefixToKey = browserPrefixToKey;
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exports.browserPrefixToStyle = browserPrefixToStyle;
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exports.default = void 0;
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var prefixes = ['Moz', 'Webkit', 'O', 'ms'];
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function getPrefix()
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/*: string*/
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{
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var prop
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/*: string*/
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= arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 'transform';
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// Checking specifically for 'window.document' is for pseudo-browser server-side
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// environments that define 'window' as the global context.
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// E.g. React-rails (see https://github.com/reactjs/react-rails/pull/84)
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if (typeof window === 'undefined' || typeof window.document === 'undefined') return '';
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var style = window.document.documentElement.style;
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if (prop in style) return '';
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for (var i = 0; i < prefixes.length; i++) {
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if (browserPrefixToKey(prop, prefixes[i]) in style) return prefixes[i];
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}
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return '';
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}
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function browserPrefixToKey(prop
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/*: string*/
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, prefix
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/*: string*/
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)
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/*: string*/
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{
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return prefix ? "".concat(prefix).concat(kebabToTitleCase(prop)) : prop;
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}
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function browserPrefixToStyle(prop
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/*: string*/
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, prefix
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/*: string*/
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)
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/*: string*/
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{
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return prefix ? "-".concat(prefix.toLowerCase(), "-").concat(prop) : prop;
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}
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function kebabToTitleCase(str
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/*: string*/
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)
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/*: string*/
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{
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var out = '';
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var shouldCapitalize = true;
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for (var i = 0; i < str.length; i++) {
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if (shouldCapitalize) {
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out += str[i].toUpperCase();
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shouldCapitalize = false;
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} else if (str[i] === '-') {
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shouldCapitalize = true;
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} else {
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out += str[i];
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}
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}
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return out;
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} // Default export is the prefix itself, like 'Moz', 'Webkit', etc
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// Note that you may have to re-test for certain things; for instance, Chrome 50
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// can handle unprefixed `transform`, but not unprefixed `user-select`
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var _default = getPrefix();
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exports.default = _default; |