gatsby-remark-katex doesn't work

Description

Unable to produce latex output from md files

Steps to reproduce

Follow the instructions at https://github.com/gatsbyjs/gatsby/tree/master/packages/gatsby-remark-katex

Expected result

latex output should appear as an svg or similar

What should happen?

Actual result

the latex text is treated as plain text

What happened.

Environment

System: OS: Linux 4.17 openSUSE Tumbleweed 20180704 CPU: x64 Intel® Core™ i5-4278U CPU @ 2.60GHz Shell: 4.4.23 - /bin/bash Binaries: Node: 10.6.0 - /usr/bin/node Yarn: 1.7.0 - /usr/bin/yarn npm: 6.1.0 - /usr/bin/npm Browsers: Chrome: 67.0.3396.99 Firefox: 61.0 npmPackages: gatsby: ^1.9.24 => 1.9.274 gatsby-link: ^1.6.16 => 1.6.46 gatsby-plugin-google-analytics: ^1.0.7 => 1.0.31 gatsby-plugin-manifest: ^1.0.7 => 1.0.27 gatsby-plugin-offline: ^1.0.9 => 1.0.18 gatsby-plugin-react-helmet: ^1.0.6 => 1.0.8 gatsby-plugin-sharp: ^1.6.7 => 1.6.48 gatsby-plugin-sitemap: ^1.2.5 => 1.2.25 gatsby-plugin-styled-components: ^1.0.5 => 1.0.5 gatsby-remark-copy-linked-files: ^1.5.7 => 1.5.37 gatsby-remark-images: ^1.5.11 => 1.5.67 gatsby-remark-katex: ^1.0.14 => 1.0.14 gatsby-remark-prismjs: ^1.2.7 => 1.2.24 gatsby-remark-responsive-iframe: ^1.4.7 => 1.4.20 gatsby-remark-smartypants: ^1.4.7 => 1.4.12 gatsby-source-filesystem: ^1.4.12 => 1.5.39 gatsby-transformer-remark: ^1.7.44 => 1.7.44 gatsby-transformer-sharp: ^1.6.5 => 1.6.27 npmGlobalPackages: gatsby-cli: 1.1.58

File contents (if changed)

gatsby-config.js: N/A package.json: N/A gatsby-node.js: N/A gatsby-browser.js: N/A gatsby-ssr.js: N/A

[wzard]

I ran into the same issue. Try this config instead. @miguelgondu @Jiang-Li

	{
			resolve: `gatsby-plugin-mdx`,
			options: {
				defaultLayouts: {
					default: require.resolve(`./src/components/mdxLayout.js`)
				}
				remarkPlugins: [ require('remark-math'), require('remark-html-katex') ]
			}
		}

[KyleAMathews]

Seems to be working here https://using-remark.gatsbyjs.org/katex/ perhaps check out the example site to see if you’re missing something?