nextjs isr page that recalibrated every 45 seconds. the page should fetch the latest weather for a zip code. in typescript

To create a Next.js ISR (Incremental Static Regeneration) page that recalibrates every 45 seconds and fetches the latest weather for a zip code, the following steps can be taken:

  1. Install the necessary dependencies
index.ts
npm install axios next
npm install --save-dev typescript
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  1. Create a TypeScript file for the page, e.g. pages/weather.tsx
import { GetStaticProps } from 'next';
import axios from 'axios';

type WeatherData = {
  temperature: number;
  description: string;
};

type WeatherProps = {
  zipCode: string;
  weatherData: WeatherData;
};

const SECONDS_IN_MINUTE = 60;
const REVALIDATION_INTERVAL = 45;

const Weather = ({ zipCode, weatherData }: WeatherProps) => {
  const { temperature, description } = weatherData;

  return (
    <div>
      <h1>Weather for {zipCode}</h1>

      <p>Temperature: {temperature} &deg;C</p>

      <p>Description: {description}</p>
    </div>
  );
};

export const getStaticProps: GetStaticProps = async () => {
  const zipCode = '12345'; // Replace with actual zip code
  const apiKey = 'abc123'; // Replace with actual API key

  const url = `https://api.openweathermap.org/data/2.5/weather?zip=${zipCode}&appid=${apiKey}&units=metric`;

  const { data } = await axios.get(url);

  const weatherData: WeatherData = {
    temperature: data.main.temp,
    description: data.weather[0].description,
  };

  return {
    props: {
      zipCode,
      weatherData,
    },
    revalidate: REVALIDATION_INTERVAL * SECONDS_IN_MINUTE, // Recalibrate every 45 seconds
  };
};

export default Weather;
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  1. Replace the zip code and API key with the actual values from OpenWeatherMap.

  2. Run the development server and access the page at http://localhost:3000/weather.

index.ts
npm run dev
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This approach enables you to use the incremental static regeneration feature of Next.js to fetch the latest weather data for a zip code and have the page recalibrated every 45 seconds. You can adjust the interval by changing the value of REVALIDATION_INTERVAL.

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