Split versions.json into two files

docs/gatsby-node.js

@@ -14,6 +14,24 @@ function pagesToSitemap(pages) {
     }));
 }
 
+function getVersionData(distTag) {
+  const versionFile = `${__dirname}/src/versions/${distTag}.json`;
+  if (!fs.existsSync(versionFile)) {
+    return null;
+  }
+  const data = {
+    [distTag]: JSON.parse(fs.readFileSync(versionFile)),
+  };
+  return data;
+}
+
+function generateVersionsFile() {
+  const latest = getVersionData('latest');
+  const next = getVersionData('next');
+  const data = { ...latest, ...next };
+  fs.writeFileSync(`${__dirname}/public/versions.json`, JSON.stringify(data));
+}
+
 function generateSitemap(pages) {
   const sitemap = sm.createSitemap({
     hostname: 'https://storybook.js.org',
@@ -36,6 +54,7 @@ module.exports = {
         }
       }
     `);
+    generateVersionsFile();
     generateSitemap(result.data.allSitePage.edges.map(({ node }) => node));
   },
   onCreateNode({ node, boundActionCreators, getNode }) {

docs/src/versions/latest.json

@@ -0,0 +1,6 @@
+{
+  "version": "5.0.0",
+  "info": {
+    "plain": "Storybook 5.0 is a completely new UI with the following improvements:\n\n- 🌓 New design with light and dark themes\n- 🛠 Canvas toolbar for easy access to addons\n- 🗺 Overhauled navigation sidebar with an intuitive menu\n- 🗜 Redesigned addons panel with handy buttons to toggle visibility and orientation\n- ⌨️ Improved keyboard shortcuts that are user configurable\n- 🌍 New URL structure that eliminates long strings of query parameters\n\n5.0 contains hundreds more fixes, features, and tweaks. Browse the changelogs matching `5.0.0-alpha.*`, `5.0.0-beta.*`, and `5.0.0-rc.*` for the full list of changes. See [MIGRATION.md](https://github.com/storybooks/storybook/blob/next/MIGRATION.md) to ugprade from `4.x`."
+  }
+}

docs/src/versions/next.json

@@ -0,0 +1,6 @@
+{
+  "version": "5.1.0-alpha.0",
+  "info": {
+    "plain": "### Features\n\n* UI: Custom scrollbars ([#5714](https://github.com/storybooks/storybook/pull/5714))\n\n### Bug Fixes\n\n* Fix: Move `react-select` dependency to 2.2 ([#5867](https://github.com/storybooks/storybook/pull/5867))\n\n### Maintenance\n\n* Cleanup unused dependencies ([#5453](https://github.com/storybooks/storybook/pull/5453))\n* Add directory attribute to repositories in package.json files ([#5643](https://github.com/storybooks/storybook/pull/5643))\n\n### Dependency Upgrades\n\n* Project-wide dependency upgrades ([#5740](https://github.com/storybooks/storybook/pull/5740))\n* Bump react-is from 16.8.1 to 16.8.3 ([#5743](https://github.com/storybooks/storybook/pull/5743))\n* Bump danger from 7.0.13 to 7.0.14 ([#5744](https://github.com/storybooks/storybook/pull/5744))\n* Bump babel-plugin-named-asset-import from 0.3.0 to 0.3.1 ([#5745](https://github.com/storybooks/storybook/pull/5745))\n* Bump eslint-plugin-json from 1.3.2 to 1.4.0 ([#5719](https://github.com/storybooks/storybook/pull/5719))\n* Bump react-native-modal-datetime-picker from 5.1.0 to 6.0.0 ([#4425](https://github.com/storybooks/storybook/pull/4425))\n* Bump immer from 1.12.0 to 2.0.0 ([#5694](https://github.com/storybooks/storybook/pull/5694))\n* Bump danger from 7.0.11 to 7.0.13 ([#5696](https://github.com/storybooks/storybook/pull/5696))\n* Bump eslint-plugin-jsx-a11y from 6.2.0 to 6.2.1 ([#5698](https://github.com/storybooks/storybook/pull/5698))\n* Bump @angular/platform-browser-dynamic from 7.2.4 to 7.2.6 ([#5697](https://github.com/storybooks/storybook/pull/5697))\n* Bump eslint from 5.12.1 to 5.14.1 ([#5653](https://github.com/storybooks/storybook/pull/5653))\n* Bump babel-preset-react-app from 7.0.0 to 7.0.1 ([#5674](https://github.com/storybooks/storybook/pull/5674))\n* Bump react from 16.8.1 to 16.8.2 ([#5673](https://github.com/storybooks/storybook/pull/5673))\n* Bump @angular/cli from 7.3.0 to 7.3.2 ([#5654](https://github.com/storybooks/storybook/pull/5654))\n* Bump @types/jest from 24.0.0 to 24.0.6 ([#5655](https://github.com/storybooks/storybook/pull/5655))\n* Bump lint-staged from 8.1.3 to 8.1.4 ([#5606](https://github.com/storybooks/storybook/pull/5606))\n* Bump @types/lodash from 4.14.120 to 4.14.121 ([#5609](https://github.com/storybooks/storybook/pull/5609))\n* Bump webpack from 4.29.0 to 4.29.3 ([#5570](https://github.com/storybooks/storybook/pull/5570))\n* update modal manager for rn 0.58 support ([#5581](https://github.com/storybooks/storybook/pull/5581))\n* Bump danger from 7.0.7 to 7.0.11 ([#5568](https://github.com/storybooks/storybook/pull/5568))\n* Bump jest-jasmine2 from 24.0.0 to 24.1.0 ([#5569](https://github.com/storybooks/storybook/pull/5569))\n* Bump jest-jasmine2 from 24.0.0 to 24.1.0 ([#5567](https://github.com/storybooks/storybook/pull/5567))\n* Bump handlebars from 4.0.12 to 4.1.0 ([#5576](https://github.com/storybooks/storybook/pull/5576))\n* Bump esm from 3.2.1 to 3.2.4 ([#5556](https://github.com/storybooks/storybook/pull/5556))\n* Bump @types/jest from 23.3.13 to 24.0.0 ([#5554](https://github.com/storybooks/storybook/pull/5554))\n* Bump webpack-dev-middleware from 3.5.1 to 3.5.2 ([#5552](https://github.com/storybooks/storybook/pull/5552))\n* Bump @emotion/core from 10.0.6 to 10.0.7 ([#5555](https://github.com/storybooks/storybook/pull/5555))\n* Bump terser-webpack-plugin from 1.2.1 to 1.2.2 ([#5553](https://github.com/storybooks/storybook/pull/5553))\n* Bump fuse.js from 3.3.1 to 3.4.2 ([#5538](https://github.com/storybooks/storybook/pull/5538))\n* Bump @angular/platform-browser-dynamic from 7.2.3 to 7.2.4 ([#5540](https://github.com/storybooks/storybook/pull/5540))\n* Bump emotion-theming from 10.0.6 to 10.0.7 ([#5541](https://github.com/storybooks/storybook/pull/5541))\n* Bump eslint-config-prettier from 3.6.0 to 4.0.0 ([#5539](https://github.com/storybooks/storybook/pull/5539))"
+  }
+}