maxGraph/packages/html/.storybook/preview.js

export const parameters = {
  actions: { argTypesRegex: "^on[A-Z].*" },
  controls: {
    matchers: {
      color: /(background|color)$/i,
      date: /Date$/,
    },
  },
}

export const defaultArgTypes = {
  width: {
    type: 'number',
    defaultValue: 800
  },
  height: {
    type: 'number',
    defaultValue: 600
  }
};