gatsby-config.js

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

module.exports = {
  siteMetadata: {
    title: 'ReactVancouver',
    author: '@ReactVan',
    siteUrl: 'https://reactvancouver.com',
  },
  flags: { DEV_SSR: true },
  plugins: [
    'gatsby-plugin-react-helmet',
    {
      resolve: `gatsby-source-filesystem`,
      options: {
        name: `assets`,
        path: path.join(__dirname, `src`, `assets`),
      },
    },
    'gatsby-plugin-image',
    'gatsby-transformer-sharp',
    'gatsby-plugin-sharp',
    {
      resolve: 'gatsby-plugin-manifest',
      options: {
        name: 'ReactVancouver Meetup',
        short_name: 'ReactVancouver',
        start_url: '/',
        background_color: '#663399',
        theme_color: '#663399',
        display: 'minimal-ui',
        icon: 'src/assets/icon.png',
      },
    },
    'gatsby-plugin-emotion',
    {
      resolve: 'gatsby-source-sanity',
      options: {
        projectId: process.env.SANITY_PROJECT_ID,
        dataset: process.env.SANITY_DATASET,
        token: process.env.SANITY_TOKEN,
        watchMode: true,
        overlayDrafts: true,
      },
    },

    // this (optional) plugin enables Progressive Web App + Offline functionality
    // To learn more, visit: https://gatsby.dev/offline
    // `gatsby-plugin-offline`,
  ],
};