Merge pull request #13787 from mitchhentgesspotify/mhentges/defer-schema-compilation

Defer schema validation to improve test performance

.changeset/bright-rules-shout.md

@@ -0,0 +1,5 @@
+---
+'@backstage/catalog-model': patch
+---
+
+Defer `ajv` compilation of schema validators to improve module-import performance

packages/catalog-model/src/kinds/util.ts

@@ -22,9 +22,12 @@ import { KindValidator } from './types';
 // exported kind validators have the `KindValidator` signature which is
 // different. So let's postpone that change until a later time.
 export function ajvCompiledJsonSchemaValidator(schema: unknown): KindValidator {
-  const validator = entityKindSchemaValidator(schema);
+  let validator: undefined | ((data: unknown) => any);
   return {
     async check(data) {
+      if (!validator) {
+        validator = entityKindSchemaValidator(schema);
+      }
       return validator(data) === data;
     },
   };