infra: enable strictNullChecks in tsconfig (#2435)

2 files changed, 6 insertions, 2 deletions

diff --git a/scripts/apidoc/faker-class.ts b/scripts/apidoc/faker-class.ts
index 6672896c..a9acad3c 100644
--- a/scripts/apidoc/faker-class.ts
+++ b/scripts/apidoc/faker-class.ts
@@ -28,6 +28,10 @@ export async function processFakerRandomizer(
     .getChildrenByKind(ReflectionKind.Interface)
     .find((clazz) => clazz.name === 'Randomizer');
 
+  if (randomizerClass == null) {
+    throw new Error('Randomizer class not found');
+  }
+
   return processClass(randomizerClass);
 }
 
@@ -63,7 +67,7 @@ async function processClass(
 function hasConstructor(clazz: DeclarationReflection): boolean {
   return clazz
     .getChildrenByKind(ReflectionKind.Constructor)
-    .some((constructor) => constructor.signatures.length > 0);
+    .some((constructor) => (constructor.signatures?.length ?? 0) > 0);
 }
 
 async function processConstructor(
diff --git a/scripts/apidoc/signature.ts b/scripts/apidoc/signature.ts
index 08fe5896..82d4047e 100644
--- a/scripts/apidoc/signature.ts
+++ b/scripts/apidoc/signature.ts
@@ -305,7 +305,7 @@ async function signatureTypeToText(
     await Promise.all(
       signature.parameters?.map(
         async (p) => `${p.name}: ${await typeToText(p.type)}`
-      )
+      ) ?? []
     )
   ).join(', ')}) => ${await typeToText(signature.type)}`;
 }