.storybook/preview.js ↔ to set parameters to control storybook addon/feature behavior, actions

sb parameters

to control storybook feature/addon, via actions

import "../src/index.css" // import global css

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

Source: storybook.js.org/docs/react/writing

References