Next.js Progressbar with debounce

This is a fork of nextjs-progressbar by apal21. It adds an optional debounce to the progress bar to prevent it from flickering when the page loads quickly.

---

A simple Next.js progressbar component using NProgress.

How to install?

npm i @sqrlplanner/nextjs-progressbar

How to use?

After installing the package, import NextNProgress in your pages/_app.js file:

import NextNProgress from '@sqrlplanner/nextjs-progressbar';

And for rendering add <NextNProgress /> to your return() in MyApp():

import NextNProgress from '@sqrlplanner/nextjs-progressbar';

export default function MyApp({ Component, pageProps }) {
  return (
    <>
      <NextNProgress />
      <Component {...pageProps} />;
    </>
  );
}

Default Config

If no props are passed to <NextNProgress />, below is the default configuration applied.

<NextNProgress 
  debounce={300}
  color="#29D"
  startPosition={0.3}
  stopDelayMs={200}
  height={3}
  showOnShallow={true}  
  />

• debounce: Debounce time in ms. The progress bar will not be shown if the page loads in less than this time.
• color: to change the default color of progressbar. You can also use rgb(,,) or rgba(,,,).
• startPosition: to set the default starting position : 0.3 = 30%.
• stopDelayMs: time for delay to stop progressbar in ms.
• height: height of progressbar in px.
• showOnShallow: You can choose whether you want the progressbar to be displayed if you're using shallow routing. It takes a boolean. Learn more about shallow routing in Next.js docs.

Advanced Config

Adding nonce

We use internal css in this package. If you are using csp, you can add nonce to the <style> tag by providing nonce prop to <NextNProgress /> component.

<NextNProgress nonce="my-nonce" />

Custom CSS

You can use transformCSS prop to pass custom css. Note: You must return a JSX.Element from the function.

<NextNProgress
  transformCSS={(css) => {
    // css is the default css string. You can modify it and return it or return your own css.
    return <style>{css}</style>;
  }}
/>

Other Configs

You can use other configurations which NProgress provides by adding a JSON in options props.

<NextNProgress options={{ easing: 'ease', speed: 500 }} />