diff --git a/src/github/handlers/push-event.ts b/src/github/handlers/push-event.ts
index f549f54..f3c4cf1 100644
--- a/src/github/handlers/push-event.ts
+++ b/src/github/handlers/push-event.ts
@@ -1,6 +1,46 @@
 import { GitHubContext } from "../github-context";
 import { CONFIG_FULL_PATH, getConfigurationFromRepo } from "../utils/config";
 import YAML, { LineCounter, Node, YAMLError } from "yaml";
+import { ValueError } from "typebox-validators";
+
+function constructErrorBody(
+  errors: Iterable<ValueError> | ValueError[] | YAML.YAMLError[],
+  rawData: string | null,
+  repository: GitHubContext<"push">["payload"]["repository"],
+  after: string
+) {
+  const body = [];
+  if (errors) {
+    for (const error of errors) {
+      body.push("> [!CAUTION]\n");
+      if (error instanceof YAMLError) {
+        body.push(`> https://github.com/${repository.owner?.login}/${repository.name}/blob/${after}/${CONFIG_FULL_PATH}#L${error.linePos?.[0].line}`);
+      } else if (rawData) {
+        const lineCounter = new LineCounter();
+        const doc = YAML.parseDocument(rawData, { lineCounter });
+        const path = error.path
+          .split("/")
+          .filter((o) => o)
+          .slice(0, -1);
+        const node = doc.getIn(path, true) as Node;
+        const linePosStart = lineCounter.linePos(node.range?.[0] || 0);
+        body.push(`> https://github.com/${repository.owner?.login}/${repository.name}/blob/${after}/${CONFIG_FULL_PATH}#L${linePosStart.line}`);
+      }
+      const message = [];
+      if (error instanceof YAMLError) {
+        message.push(error.message);
+      } else {
+        message.push(`path: ${error.path}\n`);
+        message.push(`value: ${error.value}\n`);
+        message.push(`message: ${error.message}`);
+      }
+      body.push(`\n> \`\`\`\n`);
+      body.push(`> ${message.join("").replaceAll("\n", "\n> ")}`);
+      body.push(`\n> \`\`\`\n`);
+    }
+  }
+  return body;
+}
 
 export default async function handlePushEvent(context: GitHubContext<"push">) {
   const { octokit, payload } = context;
@@ -22,33 +62,7 @@ export default async function handlePushEvent(context: GitHubContext<"push">) {
         const body = [];
         body.push(`@${payload.sender?.login} Configuration is ${!errors ? "valid" : "invalid"}.\n`);
         if (errors) {
-          for (const error of errors) {
-            body.push("> [!CAUTION]\n");
-            if (error instanceof YAMLError) {
-              body.push(`> https://github.com/${repository.owner.login}/${repository.name}/blob/${after}/${CONFIG_FULL_PATH}#L${error.linePos?.[0].line}`);
-            } else if (rawData) {
-              const lineCounter = new LineCounter();
-              const doc = YAML.parseDocument(rawData, { lineCounter });
-              const path = error.path
-                .split("/")
-                .filter((o) => o)
-                .slice(0, -1);
-              const node = doc.getIn(path, true) as Node;
-              const linePosStart = lineCounter.linePos(node.range?.[0] || 0);
-              body.push(`> https://github.com/${repository.owner.login}/${repository.name}/blob/${after}/${CONFIG_FULL_PATH}#L${linePosStart.line}`);
-            }
-            const message = [];
-            if (error instanceof YAMLError) {
-              message.push(error.message);
-            } else {
-              message.push(`path: ${error.path}\n`);
-              message.push(`value: ${error.value}\n`);
-              message.push(`message: ${error.message}`);
-            }
-            body.push(`\n> \`\`\`\n`);
-            body.push(`> ${message.join("").replaceAll("\n", "\n> ")}`);
-            body.push(`\n> \`\`\`\n`);
-          }
+          body.push(...constructErrorBody(errors, rawData, repository, after));
         }
         await octokit.rest.repos.createCommitComment({
           owner: repository.owner.login,