60 lines
2.1 KiB
JavaScript
60 lines
2.1 KiB
JavaScript
"use strict";
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var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.detectFlexGapSupported = exports.default = exports.canUseDocElement = void 0;
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exports.isStyleSupport = isStyleSupport;
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var _canUseDom = _interopRequireDefault(require("./canUseDom"));
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const canUseDocElement = () => (0, _canUseDom.default)() && window.document.documentElement;
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exports.canUseDocElement = canUseDocElement;
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const isStyleNameSupport = styleName => {
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if ((0, _canUseDom.default)() && window.document.documentElement) {
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const styleNameList = Array.isArray(styleName) ? styleName : [styleName];
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const {
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documentElement
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} = window.document;
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return styleNameList.some(name => name in documentElement.style);
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}
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return false;
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};
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const isStyleValueSupport = (styleName, value) => {
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if (!isStyleNameSupport(styleName)) {
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return false;
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}
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const ele = document.createElement('div');
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const origin = ele.style[styleName];
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ele.style[styleName] = value;
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return ele.style[styleName] !== origin;
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};
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function isStyleSupport(styleName, styleValue) {
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if (!Array.isArray(styleName) && styleValue !== undefined) {
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return isStyleValueSupport(styleName, styleValue);
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}
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return isStyleNameSupport(styleName);
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}
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let flexGapSupported;
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const detectFlexGapSupported = () => {
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if (!canUseDocElement()) {
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return false;
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}
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if (flexGapSupported !== undefined) {
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return flexGapSupported;
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}
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// create flex container with row-gap set
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const flex = document.createElement('div');
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flex.style.display = 'flex';
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flex.style.flexDirection = 'column';
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flex.style.rowGap = '1px';
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// create two, elements inside it
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flex.appendChild(document.createElement('div'));
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flex.appendChild(document.createElement('div'));
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// append to the DOM (needed to obtain scrollHeight)
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document.body.appendChild(flex);
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flexGapSupported = flex.scrollHeight === 1; // flex container should be 1px high from the row-gap
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document.body.removeChild(flex);
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return flexGapSupported;
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};
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exports.detectFlexGapSupported = detectFlexGapSupported;
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var _default = exports.default = isStyleSupport; |