fix: widen @json-render/react peer to React 18 and 19

apps/web/content/docs/installation.mdx

@@ -8,7 +8,7 @@ Install the core package plus your renderer of choice.
 
 <PackageInstall packages="@json-render/core @json-render/react" />
 
-Peer dependencies: `react ^19.0.0` and `zod ^4.0.0`.
+Peer dependencies: `react ^18.0.0 || ^19.0.0` and `zod ^4.0.0`.
 
 <PackageInstall packages="react zod" />
 

apps/web/tests/fixtures/docs-baseline.json

@@ -3011,9 +3011,9 @@
       "title": "Installation",
       "metadataTitle": "Installation | json-render",
       "prefix": "import { pageMetadata } from \"@/lib/page-metadata\"\nexport const metadata = pageMetadata(\"docs/installation\")\n\n# Installation\n",
-      "sourceSha256": "937bfb315b619c999082fac5253c2609db1e68d736ca0bf011c7eded9ec93593",
-      "bodySha256": "13b1b9d4c4f7de99ed2493358608eabb4565a956db8750f458efd437ffc6c8d1",
-      "markdownSha256": "08bbe2a46b41b4354feeb3538416a85f6d5cf9b5343d4dbf524e21ae8d56b46f",
+      "sourceSha256": "11a2c0f2d5bd6230d93bd2885bf96014fb9ee413a08020a4c07712cd48aad989",
+      "bodySha256": "40e3d4a57fb3a312b4eb8de430431ba20db6a66f7db13a26cde86f5f692dd540",
+      "markdownSha256": "35645fa10c555ad42d5c13b0d30b1f969fa3e807b131c1c88512837d34dc508e",
       "headings": [
         {
           "title": "For React UI",

packages/react/package.json

@@ -61,6 +61,6 @@
     "zod": "^4.3.6"
   },
   "peerDependencies": {
-    "react": "^19.2.3"
+    "react": "^18.0.0 || ^19.0.0"
   }
 }

packages/react/src/peer-dependency.test.ts

@@ -0,0 +1,19 @@
+// @ts-expect-error This package does not depend on @types/node.
+import { readFileSync } from "node:fs";
+// @ts-expect-error This package does not depend on @types/node.
+import { join } from "node:path";
+import { describe, expect, it } from "vitest";
+
+const packageJson = JSON.parse(
+  // @ts-expect-error Vitest provides __dirname when running this file.
+  readFileSync(join(__dirname, "../package.json"), "utf8"),
+) as {
+  peerDependencies: Record<string, string>;
+};
+
+describe("@json-render/react peerDependencies", () => {
+  it("accepts React 18 and React 19", () => {
+    expect(packageJson.peerDependencies.react).toBe("^18.0.0 || ^19.0.0");
+    expect(packageJson.peerDependencies).not.toHaveProperty("react-dom");
+  });
+});