@mui/private-theming/ThemeProvider/ThemeProvider.js

Private - The React theme context to be shared between `@mui/styles` and `@mui/material`.

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;
var _interopRequireWildcard = require("@babel/runtime/helpers/interopRequireWildcard").default;
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;
var React = _interopRequireWildcard(require("react"));
var _propTypes = _interopRequireDefault(require("prop-types"));
var _exactProp = _interopRequireDefault(require("@mui/utils/exactProp"));
var _ThemeContext = _interopRequireDefault(require("../useTheme/ThemeContext"));
var _useTheme = _interopRequireDefault(require("../useTheme"));
var _nested = _interopRequireDefault(require("./nested"));
var _jsxRuntime = require("react/jsx-runtime");
// To support composition of theme.
function mergeOuterLocalTheme(outerTheme, localTheme) {
  if (typeof localTheme === 'function') {
    const mergedTheme = localTheme(outerTheme);
    if (process.env.NODE_ENV !== 'production') {
      if (!mergedTheme) {
        console.error(['MUI: You should return an object from your theme function, i.e.', '<ThemeProvider theme={() => ({})} />'].join('\n'));
      }
    }
    return mergedTheme;
  }
  return {
    ...outerTheme,
    ...localTheme
  };
}

/**
 * This component takes a `theme` prop.
 * It makes the `theme` available down the React tree thanks to React context.
 * This component should preferably be used at **the root of your component tree**.
 */
function ThemeProvider(props) {
  const {
    children,
    theme: localTheme
  } = props;
  const outerTheme = (0, _useTheme.default)();
  if (process.env.NODE_ENV !== 'production') {
    if (outerTheme === null && typeof localTheme === 'function') {
      console.error(['MUI: You are providing a theme function prop to the ThemeProvider component:', '<ThemeProvider theme={outerTheme => outerTheme} />', '', 'However, no outer theme is present.', 'Make sure a theme is already injected higher in the React tree ' + 'or provide a theme object.'].join('\n'));
    }
  }
  const theme = React.useMemo(() => {
    const output = outerTheme === null ? {
      ...localTheme
    } : mergeOuterLocalTheme(outerTheme, localTheme);
    if (output != null) {
      output[_nested.default] = outerTheme !== null;
    }
    return output;
  }, [localTheme, outerTheme]);
  return /*#__PURE__*/(0, _jsxRuntime.jsx)(_ThemeContext.default.Provider, {
    value: theme,
    children: children
  });
}
process.env.NODE_ENV !== "production" ? ThemeProvider.propTypes = {
  /**
   * Your component tree.
   */
  children: _propTypes.default.node,
  /**
   * A theme object. You can provide a function to extend the outer theme.
   */
  theme: _propTypes.default.oneOfType([_propTypes.default.object, _propTypes.default.func]).isRequired
} : void 0;
if (process.env.NODE_ENV !== 'production') {
  process.env.NODE_ENV !== "production" ? ThemeProvider.propTypes = (0, _exactProp.default)(ThemeProvider.propTypes) : void 0;
}
var _default = exports.default = ThemeProvider;