gatsby-config.js

const _ = require("lodash")

module.exports = {
  pathPrefix: "/course-notes",
  siteMetadata: {
    title: ``,
    description: ``,
    author: `@mattfeng`,
    siteUrl: `https://mattfeng.tech/course-notes`,
  },
  plugins: [
    `gatsby-plugin-sass`,
    `gatsby-plugin-react-helmet`,
    `gatsby-plugin-image`,
    `gatsby-remark-images`,
    `gatsby-transformer-sharp`,
    `gatsby-plugin-sharp`,
    {
      resolve: `gatsby-source-filesystem`,
      options: {
        name: `images`,
        path: `${__dirname}/src/images`,
      },
    },
    {
      resolve: `gatsby-source-filesystem`,
      options: {
        name: `content`,
        path: `${__dirname}/src/content`,
      },
    },
    {
      resolve: `gatsby-plugin-mdx`,
      options: {
        gatsbyRemarkPlugins: [
          {
            resolve: `gatsby-remark-images`,
            options: {
              maxWidth: 400,
              showCaptions: true,
              wrapperStyle: fluidResult =>
                `flex:${_.round(fluidResult.aspectRatio, 2)};`,
            },
          },
          `gatsby-remark-numbered-footnotes`,
          `gatsby-remark-copy-linked-files`,
          {
            resolve: `gatsby-remark-highlight-code`,
            options: {
              theme: `solarized-light`,
            },
          },
        ],
        remarkPlugins: [
          [
            require("remark-math"),
            {
              strict: `ignore`,
              macros: {},
            },
          ],
        ],
        rehypePlugins: [
          [
            require(`rehype-katex`),
            {
              macros: {
                // chemistry
                "\\degC": "{^\\circ \\mathrm{C}}",
                "\\veps": "\\varepsilon",
                "\\to": "\\rightarrow",
                "\\pI": "\\mathrm{pI}",
                "\\pH": "\\mathrm{pH}",
                "\\PH": "\\mathrm{pH}",
                "\\PK": "\\mathrm{p}K_{#1}",
                "\\ang": "\\pu{\\mathring{\\mathrm{A}}}",
                // math
                "\\P": "\\mathbb{P}(#1)",
                "\\v": "\\mathbf{#1}",
                "\\m": "\\mathbf{#1}",
                "\\tr": "#1^\\intercal",
                "\\hr": "#1^\\mathsf{H}",
                "\\Q": "\\mathbb{Q}",
                "\\Z": "\\mathbb{Z}",
                "\\C": "\\mathbb{C}",
                "\\L": "\\mathcal{L}",
                "\\ip": "\\lang \\v{#1}, \\v{#2}\\rang",
                "\\dot": "\\v{#1} \\cdot \\v{#2}",
                "\\overbar":
                  "\\mkern 1.5mu\\overline{\\mkern-1.5mu#1\\mkern-1.5mu}\\mkern 1.5mu",
              },
            },
          ],
        ],
      },
    },
  ],
}