@mui/material/modern/styles/adaptV4Theme.js

import _extends from "@babel/runtime/helpers/esm/extends";
import _objectWithoutPropertiesLoose from "@babel/runtime/helpers/esm/objectWithoutPropertiesLoose";
const _excluded = ["defaultProps", "mixins", "overrides", "palette", "props", "styleOverrides"],
      _excluded2 = ["type", "mode"];
import { createBreakpoints, createSpacing } from '@mui/system';
export default function adaptV4Theme(inputTheme) {
  if (process.env.NODE_ENV !== 'production') {
    console.warn(['MUI: adaptV4Theme() is deprecated.', 'Follow the upgrade guide on https://mui.com/r/migration-v4#theme.'].join('\n'));
  }

  const {
    defaultProps = {},
    mixins = {},
    overrides = {},
    palette = {},
    props = {},
    styleOverrides = {}
  } = inputTheme,
        other = _objectWithoutPropertiesLoose(inputTheme, _excluded);

  const theme = _extends({}, other, {
    components: {}
  }); // default props


  Object.keys(defaultProps).forEach(component => {
    const componentValue = theme.components[component] || {};
    componentValue.defaultProps = defaultProps[component];
    theme.components[component] = componentValue;
  });
  Object.keys(props).forEach(component => {
    const componentValue = theme.components[component] || {};
    componentValue.defaultProps = props[component];
    theme.components[component] = componentValue;
  }); // CSS overrides

  Object.keys(styleOverrides).forEach(component => {
    const componentValue = theme.components[component] || {};
    componentValue.styleOverrides = styleOverrides[component];
    theme.components[component] = componentValue;
  });
  Object.keys(overrides).forEach(component => {
    const componentValue = theme.components[component] || {};
    componentValue.styleOverrides = overrides[component];
    theme.components[component] = componentValue;
  }); // theme.spacing

  theme.spacing = createSpacing(inputTheme.spacing); // theme.mixins.gutters

  const breakpoints = createBreakpoints(inputTheme.breakpoints || {});
  const spacing = theme.spacing;
  theme.mixins = _extends({
    gutters: (styles = {}) => {
      return _extends({
        paddingLeft: spacing(2),
        paddingRight: spacing(2)
      }, styles, {
        [breakpoints.up('sm')]: _extends({
          paddingLeft: spacing(3),
          paddingRight: spacing(3)
        }, styles[breakpoints.up('sm')])
      });
    }
  }, mixins);

  const {
    type: typeInput,
    mode: modeInput
  } = palette,
        paletteRest = _objectWithoutPropertiesLoose(palette, _excluded2);

  const finalMode = modeInput || typeInput || 'light';
  theme.palette = _extends({
    // theme.palette.text.hint
    text: {
      hint: finalMode === 'dark' ? 'rgba(255, 255, 255, 0.5)' : 'rgba(0, 0, 0, 0.38)'
    },
    mode: finalMode,
    type: finalMode
  }, paletteRest);
  return theme;
}