diff --git a/jest-transformer.js b/jest-transformer.js
index 0532d3176f793..072aba2e1ecc4 100644
--- a/jest-transformer.js
+++ b/jest-transformer.js
@@ -1,5 +1,2 @@
 const babelPreset = require(`babel-preset-gatsby-package`)()
-module.exports = require(`babel-jest`).createTransformer({
-  ...babelPreset,
-  plugins: [...babelPreset.plugins, `babel-plugin-dynamic-import-node`],
-})
+module.exports = require(`babel-jest`).createTransformer(babelPreset)
diff --git a/jest.config.js b/jest.config.js
index 9f1d17ce9b5ae..d31d4d181ad65 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -1,24 +1,24 @@
-const path = require(`path`)
-const glob = require(`glob`)
-const fs = require(`fs`)
+const path = require(`path`);
+const glob = require(`glob`);
+const fs = require(`fs`);
 
-const pkgs = glob.sync(`./packages/*`).map(p => p.replace(/^\./, `<rootDir>`))
+const pkgs = glob.sync(`./packages/*`).map(p => p.replace(/^\./, `<rootDir>`));
 
-const reGatsby = /gatsby$/
-const gatsbyDir = pkgs.find(p => reGatsby.exec(p))
-const gatsbyBuildDirs = [`dist`].map(dir => path.join(gatsbyDir, dir))
+const reGatsby = /gatsby$/;
+const gatsbyDir = pkgs.find(p => reGatsby.exec(p));
+const gatsbyBuildDirs = [`dist`].map(dir => path.join(gatsbyDir, dir));
 const builtTestsDirs = pkgs
   .filter(p => fs.existsSync(path.join(p, `src`)))
-  .map(p => path.join(p, `__tests__`))
-const distDirs = pkgs.map(p => path.join(p, `dist`))
+  .map(p => path.join(p, `__tests__`));
+const distDirs = pkgs.map(p => path.join(p, `dist`));
 const ignoreDirs = [`<rootDir>/packages/gatsby-dev-cli/verdaccio`].concat(
   gatsbyBuildDirs,
   builtTestsDirs,
   distDirs
-)
+);
 
-const coverageDirs = pkgs.map(p => path.join(p, `src/**/*.js`))
-const useCoverage = !!process.env.GENERATE_JEST_REPORT
+const coverageDirs = pkgs.map(p => path.join(p, `src/**/*.js`));
+const useCoverage = !!process.env.GENERATE_JEST_REPORT;
 
 module.exports = {
   notify: true,
@@ -31,14 +31,14 @@ module.exports = {
     `<rootDir>/www/`,
     `<rootDir>/dist/`,
     `<rootDir>/node_modules/`,
-    `__tests__/fixtures`,
+    `__tests__/fixtures`
   ],
   transform: {
     "^.+\\.js$": `<rootDir>/jest-transformer.js`,
-    "^.+\\.tsx?$": `<rootDir>/node_modules/ts-jest/preprocessor.js`,
+    "^.+\\.tsx?$": `<rootDir>/node_modules/ts-jest/preprocessor.js`
   },
   moduleNameMapper: {
-    "^highlight.js$": `<rootDir>/node_modules/highlight.js/lib/index.js`,
+    "^highlight.js$": `<rootDir>/node_modules/highlight.js/lib/index.js`
   },
   snapshotSerializers: [`jest-serializer-path`],
   collectCoverage: useCoverage,
@@ -48,11 +48,11 @@ module.exports = {
       lines: 45,
       statements: 44,
       functions: 42,
-      branches: 43,
-    },
+      branches: 43
+    }
   },
   collectCoverageFrom: coverageDirs,
   reporters: [`default`].concat(useCoverage ? `jest-junit` : []),
   testEnvironment: `jest-environment-jsdom-fourteen`,
-  moduleFileExtensions: [`js`, `jsx`, `ts`, `tsx`, `json`],
-}
+  moduleFileExtensions: [`js`, `jsx`, `ts`, `tsx`, `json`]
+};
diff --git a/packages/gatsby-remark-graphviz/__tests__/index.js b/packages/gatsby-remark-graphviz/__tests__/index.js
deleted file mode 100644
index 3f44a57861928..0000000000000
--- a/packages/gatsby-remark-graphviz/__tests__/index.js
+++ /dev/null
@@ -1,92 +0,0 @@
-"use strict";
-
-var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
-
-var _asyncToGenerator2 = _interopRequireDefault(require("@babel/runtime/helpers/asyncToGenerator"));
-
-const Remark = require(`remark`);
-
-const toHAST = require(`mdast-util-to-hast`);
-
-const hastToHTML = require(`hast-util-to-html`);
-
-const cheerio = require(`cheerio`);
-
-const plugin = require(`../`);
-
-const remark = new Remark().data(`settings`, {
-  commonmark: true,
-  footnotes: true,
-  pedantic: true
-});
-
-const run =
-/*#__PURE__*/
-function () {
-  var _ref = (0, _asyncToGenerator2.default)(function* (content) {
-    const markdownAST = remark.parse(content);
-    yield plugin({
-      markdownAST
-    });
-    const htmlAst = toHAST(markdownAST, {
-      allowDangerousHTML: true
-    });
-    const html = hastToHTML(htmlAst, {
-      allowDangerousHTML: true
-    });
-    return html;
-  });
-
-  return function run(_x) {
-    return _ref.apply(this, arguments);
-  };
-}();
-
-describe(`handles valid graph languages`, () => {
-  it(`dot`,
-  /*#__PURE__*/
-  (0, _asyncToGenerator2.default)(function* () {
-    const test = yield run(`
-\`\`\`dot
-  digraph graphname {
-    a -> b;
-    b -> c;
-    a -> c;
-  }
-\`\`\``);
-    const $ = cheerio.load(test);
-    expect($(`svg`).length).toBe(1);
-    expect($(`pre`).length).toBe(0);
-    expect($(`code`).length).toBe(0);
-  }));
-  it(`circo`,
-  /*#__PURE__*/
-  (0, _asyncToGenerator2.default)(function* () {
-    const test = yield run(`
-\`\`\`circo
-  digraph graphname {
-    a -> b;
-    b -> c;
-    a -> c;
-  }
-\`\`\``);
-    const $ = cheerio.load(test);
-    expect($(`svg`).length).toBe(1);
-    expect($(`pre`).length).toBe(0);
-    expect($(`code`).length).toBe(0);
-  }));
-  it(`unknown graph lang`,
-  /*#__PURE__*/
-  (0, _asyncToGenerator2.default)(function* () {
-    const test = yield run(`
-\`\`\`pieh-format
-  digraph graphname {
-    a :heart: b;
-  }
-\`\`\``);
-    const $ = cheerio.load(test);
-    expect($(`svg`).length).toBe(0);
-    expect($(`pre`).length).toBe(1);
-    expect($(`code`).length).toBe(1);
-  }));
-});
\ No newline at end of file