From 0f0b19c6027e289f5fdce039ebabf52ee3cc9fc8 Mon Sep 17 00:00:00 2001
From: "(quasar) nebula" <qznebula@protonmail.com>
Date: Fri, 2 Jun 2023 09:37:41 -0300
Subject: infra: early error when relation() called w/ unlisted dependency

---
 src/content-function.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/content-function.js b/src/content-function.js
index 921b5bcd..3536d5a8 100644
--- a/src/content-function.js
+++ b/src/content-function.js
@@ -219,6 +219,8 @@ export function getRelationsTree(dependencies, contentFunctionName, wikiData, ..
       return null;
     }
 
+    const listedDependencies = new Set(contentFunction.contentDependencies);
+
     // TODO: Evaluating a sprawl might belong somewhere better than here, lol...
     const sprawl =
       (contentFunction.sprawl
@@ -233,6 +235,10 @@ export function getRelationsTree(dependencies, contentFunctionName, wikiData, ..
     })();
 
     const relationFunction = (name, ...args) => {
+      if (!listedDependencies.has(name)) {
+        throw new Error(`Called relation('${name}') but ${contentFunctionName} doesn't list that dependency`);
+      }
+
       const relationSymbol = Symbol(relationSymbolMessage(name));
       relationSlots[relationSymbol] = {name, args};
       return {[relationIdentifier]: relationSymbol};
-- 
cgit 1.3.0-6-gf8a5