gatsby-config.js

require("dotenv").config({
  path: `.env.${process.env.NODE_ENV}`,
});

const contentfulConfig = {
  spaceId: process.env.CONTENTFUL_SPACE_ID,
  accessToken:
      process.env.CONTENTFUL_ACCESS_TOKEN ||
      process.env.CONTENTFUL_DELIVERY_TOKEN,
};

if (process.env.CONTENTFUL_HOST) {
  contentfulConfig.host = process.env.CONTENTFUL_HOST;
  contentfulConfig.accessToken = process.env.CONTENTFUL_PREVIEW_ACCESS_TOKEN;
}

const { spaceId, accessToken } = contentfulConfig;

if (!spaceId || !accessToken) {
  throw new Error(
      "Contentful spaceId and the access token need to be provided."
  );
}


module.exports = {
  siteMetadata: {
    title: `Delowar Hossain`,
    description: `Front-end developer`,
    designation: `Front-end Engineer`,
    author: `@delowar`,
  },
  plugins: [
    `gatsby-plugin-sass`,
    `gatsby-plugin-react-helmet`,
    `gatsby-plugin-image`,
    `gatsby-transformer-remark`,
    {
      resolve: `gatsby-source-filesystem`,
      options: {
        name: `images`,
        path: `${__dirname}/src/images`,
      },
    },
    `gatsby-transformer-sharp`,
    `gatsby-plugin-sharp`,
    {
      resolve: `gatsby-plugin-manifest`,
      options: {
        name: `gatsby-starter-default`,
        short_name: `starter`,
        start_url: `/`,
        background_color: `#663399`,
        theme_color: `#663399`,
        display: `minimal-ui`,
        icon: `src/images/gatsby-icon.png`, // This path is relative to the root of the site.
      },
    },
    `gatsby-plugin-gatsby-cloud`,
    {
      resolve: 'gatsby-plugin-eslint',
      options: {
        stages: ['develop'],
        extensions: ['js', 'jsx'],
        exclude: ['node_modules', '.cache', 'public'],
        // Any eslint-webpack-plugin options below
      }
    },
    {
      resolve: "gatsby-source-contentful",
      options: contentfulConfig,
    },
  ],
}