downgrade

package.json

@@ -43,7 +43,7 @@
     "elliptic": "6.6.0",
     "esbuild": "0.24.2",
     "eslint": "9.17.0",
-    "eslint-config-next": "15.1.2",
+    "eslint-config-next": "14.2.23",
     "instantsearch.js": "4.75.4",
     "jsonpath-plus": "10.0.7",
     "markdown-to-jsx": "7.4.0",
@@ -82,7 +82,7 @@
     "depcheck": "^1.4.7",
     "dotenv": "^16.4.5",
     "eslint": "^9",
-    "eslint-config-next": "15.1.2",
+    "eslint-config-next": "14.2.23",
     "eslint-config-prettier": "^9.1.0",
     "eslint-config-turbo": "^2.3.3",
     "eslint-plugin-deprecation": "^3.0.0",
@@ -105,7 +105,7 @@
     "prettier": "^3.4.2",
     "prettier-plugin-organize-imports": "^4.1.0",
     "prettier-plugin-tailwindcss": "^0.6.9",
-    "react": "^19",
+    "react": "^18",
     "rollup": "^4.22.4",
     "styled-jsx": "^5.1.2",
     "stylelint": "^16.1.0",

packages/commons/react-commons/package.json

@@ -33,13 +33,13 @@
     "es-toolkit": "^1.27.0",
     "fastdom": "^1.0.12",
     "immer": "^9.0.15",
-    "react": "^19",
+    "react": "^18",
     "ts-essentials": "^10.0.1"
   },
   "devDependencies": {
     "@fern-platform/configs": "workspace:*",
     "@types/node": "^18.19.74",
-    "@types/react": "^19",
+    "@types/react": "^18",
     "depcheck": "^1.4.7",
     "eslint": "^9",
     "prettier": "^3.4.2",

packages/commons/react-commons/src/useResizeObserver.ts

@@ -5,7 +5,7 @@ import { noop } from "ts-essentials";
 import { useEventCallback } from "./useEventCallback";
 
 export function useResizeObserver(
-  ref: RefObject<HTMLElement>,
+  ref: RefObject<HTMLElement | null>,
   measure: (entries: ResizeObserverEntry[]) => void
 ): void {
   // ResizeObserver is not supported in SSG, so this hook should be disabled on the server-side

packages/fdr-sdk/src/navigation/versions/latest/NavigationNodeParent.ts

@@ -1,4 +1,6 @@
-import { NavigationNode } from "./NavigationNode";
-import { NavigationNodeLeaf } from "./NavigationNodeLeaf";
+import { FernNavigation } from "../../..";
 
-export type NavigationNodeParent = Exclude<NavigationNode, NavigationNodeLeaf>;
+export type NavigationNodeParent = Exclude<
+  FernNavigation.NavigationNode,
+  FernNavigation.NavigationNodeLeaf
+>;

packages/fern-docs/bundle/package.json

@@ -70,12 +70,12 @@
     "feed": "^4.2.2",
     "iron-session": "^8.0.3",
     "jose": "^5.2.3",
-    "next": "15.1.6",
+    "next": "14.2.23",
     "postcss-import": "^16.0.1",
     "posthog-node": "^4.2.1",
     "qs": "6.12.0",
-    "react": "^19",
-    "react-dom": "^19",
+    "react": "^18",
+    "react-dom": "^18",
     "schema-dts": "^1.1.2",
     "server-only": "^0.0.1",
     "sharp": "^0.33.3",
@@ -87,12 +87,12 @@
   },
   "devDependencies": {
     "@fern-platform/configs": "workspace:*",
-    "@next/bundle-analyzer": "15.1.6",
+    "@next/bundle-analyzer": "14.2.23",
     "@tailwindcss/forms": "^0.5.7",
     "@tailwindcss/typography": "^0.5.10",
     "@types/node": "^18.19.74",
-    "@types/react": "^19",
-    "@types/react-dom": "^19",
+    "@types/react": "^18",
+    "@types/react-dom": "^18",
     "autoprefixer": "^10.4.16",
     "depcheck": "^1.4.7",
     "eslint": "^9",

packages/fern-docs/components/package.json

@@ -81,8 +81,8 @@
     "iconoir-react": "^7.7.0",
     "lucide-react": "^0.460.0",
     "moment": "^2.30.1",
-    "react": "^19",
-    "react-dom": "^19",
+    "react": "^18",
+    "react-dom": "^18",
     "sonner": "^1.5.0",
     "tailwind-merge": "^2.3.0",
     "ts-extras": "^0.11.0"
@@ -104,8 +104,8 @@
     "@testing-library/jest-dom": "^6.4.2",
     "@testing-library/react": "^14.2.1",
     "@types/node": "^18.19.74",
-    "@types/react": "^19",
-    "@types/react-dom": "^19",
+    "@types/react": "^18",
+    "@types/react-dom": "^18",
     "@types/react-test-renderer": "^18.0.7",
     "@vitejs/plugin-react": "^4.2.1",
     "autoprefixer": "^10.4.16",
@@ -116,7 +116,7 @@
     "jsdom": "^24.0.0",
     "postcss-import": "^16.0.1",
     "prettier": "^3.4.2",
-    "react-test-renderer": "^19",
+    "react-test-renderer": "^18",
     "sass": "^1.74.1",
     "storybook": "^8.5.1",
     "stylelint": "^16.1.0",
@@ -126,8 +126,8 @@
     "vitest": "^2.1.4"
   },
   "peerDependencies": {
-    "react": "^19",
-    "react-dom": "^19",
+    "react": "^18",
+    "react-dom": "^18",
     "sass": "^1.74.1"
   }
 }

packages/fern-docs/icons-cdn/package.json

@@ -34,17 +34,17 @@
     "@fortawesome/sharp-regular-svg-icons": "^6.7.2",
     "@fortawesome/sharp-solid-svg-icons": "^6.7.2",
     "@fortawesome/sharp-thin-svg-icons": "^6.7.2",
-    "react": "^19",
-    "react-dom": "^19"
+    "react": "^18",
+    "react-dom": "^18"
   },
   "devDependencies": {
     "@fern-platform/configs": "workspace:*",
-    "@next/bundle-analyzer": "15.1.6",
+    "@next/bundle-analyzer": "14.2.23",
     "@types/node": "^18.19.74",
-    "@types/react": "^19",
+    "@types/react": "^18",
     "depcheck": "^1.4.7",
     "eslint": "^9",
-    "next": "15.1.6",
+    "next": "14.2.23",
     "prettier": "^3.4.2",
     "stylelint": "^16.1.0",
     "typescript": "^5",

packages/fern-docs/local-preview-bundle/package.json

@@ -43,24 +43,24 @@
     "@fern-docs/utils": "workspace:*",
     "@fern-platform/fdr-utils": "workspace:*",
     "cssnano": "^6.0.3",
-    "next": "15.1.6",
+    "next": "14.2.23",
     "node-fetch": "2.7.0",
     "postcss-import": "^16.0.1",
-    "react": "^19",
-    "react-dom": "^19",
+    "react": "^18",
+    "react-dom": "^18",
     "styled-jsx": "^5.1.2",
     "ts-essentials": "^10.0.1",
     "url-join": "5.0.0"
   },
   "devDependencies": {
     "@fern-platform/configs": "workspace:*",
-    "@next/bundle-analyzer": "15.1.6",
+    "@next/bundle-analyzer": "14.2.23",
     "@tailwindcss/forms": "^0.5.7",
     "@tailwindcss/typography": "^0.5.10",
     "@types/node": "^18.19.74",
     "@types/node-fetch": "2.6.9",
-    "@types/react": "^19",
-    "@types/react-dom": "^19",
+    "@types/react": "^18",
+    "@types/react-dom": "^18",
     "autoprefixer": "^10.4.16",
     "depcheck": "^1.4.7",
     "eslint": "^9",

packages/fern-docs/search-ui/package.json

@@ -76,24 +76,24 @@
     "@tailwindcss/typography": "^0.5.10",
     "@types/hast": "^3.0.4",
     "@types/mdast": "^4.0.3",
-    "@types/react": "^19",
-    "@types/react-dom": "^19",
+    "@types/react": "^18",
+    "@types/react-dom": "^18",
     "@upstash/qstash": "^2.7.16",
     "autoprefixer": "^10.4.16",
     "cssnano": "^6.0.3",
-    "next": "15.1.6",
+    "next": "14.2.23",
     "postcss": "^8.4.33",
-    "react": "^19",
-    "react-dom": "^19",
+    "react": "^18",
+    "react-dom": "^18",
     "storybook": "^8.5.1",
     "swr": "^2.3.0",
     "tailwindcss": "^3",
     "tailwindcss-animate": "^1.0.7",
     "typescript": "^5"
   },
   "peerDependencies": {
-    "next": "15.1.6",
-    "react": "^19",
-    "react-dom": "^19"
+    "next": "14.2.23",
+    "react": "^18",
+    "react-dom": "^18"
   }
 }

packages/fern-docs/seo/package.json

@@ -33,15 +33,15 @@
     "@fern-api/ui-core-utils": "workspace:*",
     "@fern-docs/mdx": "workspace:*",
     "@fern-docs/utils": "workspace:*",
-    "next": "15.1.6",
-    "react": "^19",
+    "next": "14.2.23",
+    "react": "^18",
     "schema-dts": "^1.1.2"
   },
   "devDependencies": {
     "@fern-platform/configs": "workspace:*",
     "@fern-platform/fdr-utils": "workspace:*",
     "@types/node": "^18.19.74",
-    "@types/react": "^19",
+    "@types/react": "^18",
     "depcheck": "^1.4.7",
     "eslint": "^9",
     "prettier": "^3.4.2",

packages/fern-docs/seo/src/__test__/getBreadcrumbList.test.ts

@@ -39,7 +39,12 @@ describe("getBreadcrumbList", () => {
       },
     ];
     expect(
-      getBreadcrumbList("buildwithfern.com", parents, node, "Overriden Title")
+      getBreadcrumbList(
+        "buildwithfern.com",
+        parents.filter(FernNavigation.hasMetadata),
+        node,
+        "Overriden Title"
+      )
     ).toEqual({
       "@context": "https://schema.org",
       "@type": "BreadcrumbList",

packages/fern-docs/seo/src/with-seo.ts

@@ -5,14 +5,14 @@ import type {
   WithMetadataConfig,
 } from "@fern-api/fdr-sdk/docs";
 import * as FernNavigation from "@fern-api/fdr-sdk/navigation";
+import { WithNodeMetadata } from "@fern-api/fdr-sdk/navigation";
 import {
   assertNonNullish,
   visitDiscriminatedUnion,
   withDefaultProtocol,
 } from "@fern-api/ui-core-utils";
 import { markdownToString } from "@fern-docs/mdx";
 import { addLeadingSlash, conformTrailingSlash } from "@fern-docs/utils";
-
 import type { LinkTag, MetaTag, NextSeoProps } from "./types";
 import { getBreadcrumbList } from "./with-breadcrumb";
 
@@ -113,7 +113,12 @@ export function withSeo(
     // add breadcrumb list if it exists, otherwise compute it
     seo.breadcrumbList ??=
       ogMetadata["jsonld:breadcrumb"] ??
-      getBreadcrumbList(domain, parents, node, frontmatter.title);
+      getBreadcrumbList(
+        domain,
+        parents.filter(FernNavigation.hasMetadata) as WithNodeMetadata[],
+        node,
+        frontmatter.title
+      );
 
     // add canonical url if frontmatter has it
     if (frontmatter["canonical-url"] != null) {

packages/fern-docs/syntax-highlighter/package.json

@@ -32,13 +32,13 @@
   "devDependencies": {
     "@fern-platform/configs": "workspace:*",
     "@types/hast": "^3.0.4",
-    "@types/react": "^19",
-    "@types/react-dom": "^19",
-    "react": "^19",
-    "react-dom": "^19"
+    "@types/react": "^18",
+    "@types/react-dom": "^18",
+    "react": "^18",
+    "react-dom": "^18"
   },
   "peerDependencies": {
-    "react": "^19",
-    "react-dom": "^19"
+    "react": "^18",
+    "react-dom": "^18"
   }
 }

packages/fern-docs/ui/package.json

@@ -97,14 +97,14 @@
     "mdx-bundler": "^10.0.3",
     "mermaid": "^11.2.1",
     "moment": "^2.30.1",
-    "next": "15.1.6",
+    "next": "14.2.23",
     "next-mdx-remote": "^5.0.0",
     "nprogress": "^0.2.0",
     "numeral": "^2.0.6",
     "parse-numeric-range": "^1.3.0",
     "posthog-js": "^1.154.5",
-    "react": "^19",
-    "react-dom": "^19",
+    "react": "^18",
+    "react-dom": "^18",
     "react-error-boundary": "^4.0.10",
     "react-feather": "^2.0.10",
     "react-instantsearch": "^7.13.7",
@@ -146,8 +146,8 @@
     "@types/jsonpath": "^0.2.4",
     "@types/node": "^18.19.74",
     "@types/numeral": "^2.0.5",
-    "@types/react": "^19",
-    "@types/react-dom": "^19",
+    "@types/react": "^18",
+    "@types/react-dom": "^18",
     "@types/three": "^0.170.0",
     "@types/tinycolor2": "^1.4.6",
     "@vitejs/plugin-react": "^4.2.1",