gatsby-node.js

/**
 * Implement Gatsby's Node APIs in this file.
 *
 * See: https://www.gatsbyjs.org/docs/node-apis/
 */

// You can delete this file if you're not using it

const path = require('path');

/**
 * Generate Blog Posts
 */
exports.createPages = ({ graphql, actions }) => {
  const { createPage } = actions;

  const postTemplate = path.resolve('src/templates/blog-post.js');

  return graphql(`
    {
      allMarkdownRemark {
        edges {
          node {
            html
            id
            frontmatter {
              path
              title
              author
              date
              tags {
                tag
              }
            }
            excerpt
          }
        }
      }
    }
  `).then(res => {
    if (res.errors) {
      return Promise.reject(res.errors);
    }

    res.data.allMarkdownRemark.edges.forEach(({ node }) => {
      createPage({
        path: node.frontmatter.path,
        component: postTemplate
      });
    });
  });
};

/**
 * Theme Semantic UI
 */
exports.onCreateWebpackConfig = ({ stage, actions }) => {
  actions.setWebpackConfig({
    resolve: {
      alias: {
        '../../theme.config$': path.join(__dirname, 'src/semantic/theme.config')
      }
    }
  });
};