85 lines
2.1 KiB
JavaScript
85 lines
2.1 KiB
JavaScript
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"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.browserPrefixToKey = browserPrefixToKey;
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exports.browserPrefixToStyle = browserPrefixToStyle;
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exports.default = void 0;
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exports.getPrefix = getPrefix;
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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 _window$document, _window$document$docu;
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var prop
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/*: string*/
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= arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 'transform';
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// Ensure we're running in an environment where there is actually a global
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// `window` obj
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if (typeof window === 'undefined') return ''; // If we're in a pseudo-browser server-side environment, this access
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// path may not exist, so bail out if it doesn't.
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var style = (_window$document = window.document) === null || _window$document === void 0 ? void 0 : (_window$document$docu = _window$document.documentElement) === null || _window$document$docu === void 0 ? void 0 : _window$document$docu.style;
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if (!style) return '';
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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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/*: string*/
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);
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exports.default = _default;
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