add postversion script to patch changesets

Author: chaance

package.json

@@ -29,6 +29,7 @@
     "size": "filesize",
     "test": "jest",
     "version": "changeset version",
+    "postversion": "node scripts/postversion.mjs",
     "version:experimental": "node scripts ./scripts/version experimental",
     "watch": "rollup -c -w"
   },

scripts/postversion.mjs

@@ -0,0 +1,15 @@
+import * as path from "path";
+import { createRequire } from "node:module";
+
+const require = createRequire(import.meta.url);
+const jsonfile = require("jsonfile");
+
+let file = path.join(
+  process.cwd(),
+  "packages/react-router-dom-v5-compat/package.json"
+);
+let json = await jsonfile.readFile(file);
+json.peerDependencies["react-router-dom"] = "4 || 5";
+await jsonfile.writeFile(file, json, { spaces: 2 });
+
+console.log("Patched peerDependencies for react-router-dom-v5-compat");