From 31445a35bb35c66f886a30ea1e3219e6943bad76 Mon Sep 17 00:00:00 2001
From: vorotamoroz <vrtmrz@gmail.com>
Date: Thu, 30 Jul 2026 12:18:01 +0000
Subject: [PATCH] build: generate compatibility types after production build

---
 package.json                                  |  1 +
 test/type-resolution-compat/generator.test.ts | 11 +++++++++++
 2 files changed, 12 insertions(+)

diff --git a/package.json b/package.json
index da6db863..44be4e4e 100644
--- a/package.json
+++ b/package.json
@@ -23,6 +23,7 @@
         "prettyCheck": "npm run prettyNoWrite -- --check",
         "prettyNoWrite": "prettier --config ./.prettierrc.mjs \"**/*.js\" \"**/*.ts\" \"**/*.json\" ",
         "postinstall": "npm run generate:type-resolution-compat",
+        "postbuild": "npm run generate:type-resolution-compat",
         "precheck:compatibility": "npm run build",
         "check:compatibility": "node utils/check-compatibility.js --file main.js --ios 15",
         "check": "npm run tsc-check && npm run tsc-check:apps && npm run lint && npm run lint:community -- --quiet && npm run lint:community:tools && npm run svelte-check && npm run check:compatibility",
diff --git a/test/type-resolution-compat/generator.test.ts b/test/type-resolution-compat/generator.test.ts
index b07e8492..bc819771 100644
--- a/test/type-resolution-compat/generator.test.ts
+++ b/test/type-resolution-compat/generator.test.ts
@@ -122,6 +122,17 @@ function validSyntheticExports(): Record<string, unknown> {
     };
 }
 
+Deno.test("root postbuild generates the type-resolution compatibility mirror", async () => {
+    const repositoryRoot = await Deno.realPath(new URL("../../", import.meta.url));
+    const packageJson = JSON.parse(await Deno.readTextFile(`${repositoryRoot}/package.json`)) as {
+        scripts?: Record<string, string>;
+    };
+    assert(
+        packageJson.scripts?.postbuild === "npm run generate:type-resolution-compat",
+        "root postbuild does not invoke the compatibility generator"
+    );
+});
+
 Deno.test("generator covers the installed package export maps deterministically", async () => {
     const repositoryRoot = await Deno.realPath(new URL("../../", import.meta.url));
     const temporaryDirectory = await Deno.makeTempDir({ prefix: "livesync-type-generator-" });