tntd/lib/_util/styleChecker.js

tntd是基于 TNT Design 设计体系的 React UI 组件库，主要用于研发企业级中后台产品。

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.detectFlexGapSupported = exports.canUseDocElement = void 0;
Object.defineProperty(exports, "isStyleSupport", {
  enumerable: true,
  get: function get() {
    return _styleChecker.isStyleSupport;
  }
});
var _canUseDom = _interopRequireDefault(require("rc-util/lib/Dom/canUseDom"));
var _styleChecker = require("rc-util/lib/Dom/styleChecker");
function _interopRequireDefault(e) {
  return e && e.__esModule ? e : {
    "default": e
  };
}
var canUseDocElement = exports.canUseDocElement = function canUseDocElement() {
  return (0, _canUseDom["default"])() && window.document.documentElement;
};
var flexGapSupported;
var detectFlexGapSupported = exports.detectFlexGapSupported = function detectFlexGapSupported() {
  if (!canUseDocElement()) {
    return false;
  }
  if (flexGapSupported !== undefined) {
    return flexGapSupported;
  }
  // create flex container with row-gap set
  var flex = document.createElement('div');
  flex.style.display = 'flex';
  flex.style.flexDirection = 'column';
  flex.style.rowGap = '1px';
  // create two, elements inside it
  flex.appendChild(document.createElement('div'));
  flex.appendChild(document.createElement('div'));
  // append to the DOM (needed to obtain scrollHeight)
  document.body.appendChild(flex);
  flexGapSupported = flex.scrollHeight === 1; // flex container should be 1px high from the row-gap
  document.body.removeChild(flex);
  return flexGapSupported;
};