chore: Make editor version comparison more lenient to reduce forced reloads

server/api/middlewares/editor.js

@@ -1,16 +1,26 @@
 // @flow
+import semver from 'semver';
 import { type Context } from 'koa';
 import pkg from 'rich-markdown-editor/package.json';
 import { EditorUpdateError } from '../../errors';
 
 export default function editor() {
   return async function editorMiddleware(ctx: Context, next: () => Promise<*>) {
-    const editorVersion = ctx.headers['x-editor-version'];
+    const clientVersion = ctx.headers['x-editor-version'];
 
-    // As the client can only ever be behind the server there's no need for a
-    // more strict check of version infront/behind here
-    if (editorVersion && editorVersion !== pkg.version) {
-      throw new EditorUpdateError();
+    // If the editor version on the client is behind the current version being
+    // served in production by either a minor (new features), or major (breaking
+    // changes) then force a client reload.
+    if (clientVersion) {
+      const parsedClientVersion = semver.parse(clientVersion);
+      const parsedCurrentVersion = semver.parse(pkg.version);
+
+      if (
+        parsedClientVersion.major < parsedCurrentVersion.major ||
+        parsedClientVersion.minor < parsedCurrentVersion.minor
+      ) {
+        throw new EditorUpdateError();
+      }
     }
     return next();
   };