bc518174
 王天杨
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"use strict";
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = useLayerOrder;
var _useEnhancedEffect = _interopRequireDefault(require("@mui/utils/useEnhancedEffect"));
var _useId = _interopRequireDefault(require("@mui/utils/useId"));
var _GlobalStyles = _interopRequireDefault(require("../GlobalStyles"));
var _useThemeWithoutDefault = _interopRequireDefault(require("../useThemeWithoutDefault"));
var _jsxRuntime = require("react/jsx-runtime");
/**
* This hook returns a `GlobalStyles` component that sets the CSS layer order (for server-side rendering).
* Then on client-side, it injects the CSS layer order into the document head to ensure that the layer order is always present first before other Emotion styles.
*/function useLayerOrder(theme) {
const upperTheme = (0, _useThemeWithoutDefault.default)();
const id = (0, _useId.default)() || '';
const {
modularCssLayers
} = theme;
let layerOrder = 'mui.global, mui.components, mui.theme, mui.custom, mui.sx';
if (!modularCssLayers || upperTheme !== null) {
// skip this hook if upper theme exists.
layerOrder = '';
} else if (typeof modularCssLayers === 'string') {
layerOrder = modularCssLayers.replace(/mui(?!\.)/g, layerOrder);
} else {
layerOrder = `@layer ${layerOrder};`;
}
(0, _useEnhancedEffect.default)(() => {
const head = document.querySelector('head');
if (!head) {
return;
}
const firstChild = head.firstChild;
if (layerOrder) {
// Only insert if first child doesn't have data-mui-layer-order attribute
if (firstChild && firstChild.hasAttribute?.('data-mui-layer-order') && firstChild.getAttribute('data-mui-layer-order') === id) {
return;
}
const styleElement = document.createElement('style');
styleElement.setAttribute('data-mui-layer-order', id);
styleElement.textContent = layerOrder;
head.prepend(styleElement);
} else {
head.querySelector(`style[data-mui-layer-order="${id}"]`)?.remove();
}
}, [layerOrder, id]);
if (!layerOrder) {
return null;
}
return /*#__PURE__*/(0, _jsxRuntime.jsx)(_GlobalStyles.default, {
styles: layerOrder
});
}
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