refactor: address comments.

Author: knightedcodemonkey

README.md

@@ -1,4 +1,7 @@
-# <img src="src/logo.svg" alt="@knighted/develop logo" width="36" height="36" style="vertical-align: middle;" /> <span style="vertical-align: middle;"><code>@knighted/develop</code></span>
+<h1>
+	<img src="src/logo.svg" alt="@knighted/develop logo" width="32" height="32" valign="middle" />
+	<code>@knighted/develop</code>
+</h1>
 
 CDN-first browser IDE for building UI components with [`@knighted/jsx`](https://github.com/knightedcodemonkey/jsx) and [`@knighted/css`](https://github.com/knightedcodemonkey/css).
 

src/modules/lint-diagnostics.js

@@ -47,9 +47,8 @@ const normalizeLintDiagnostic = diagnostic => {
 }
 
 const formatLintDiagnosticMessage = diagnostic => {
-  const normalized = normalizeLintDiagnostic(diagnostic)
-  const ruleSuffix = normalized.ruleId ? ` (${normalized.ruleId})` : ''
-  return `${normalized.message}${ruleSuffix}`
+  const ruleSuffix = diagnostic.ruleId ? ` (${diagnostic.ruleId})` : ''
+  return `${diagnostic.message}${ruleSuffix}`
 }
 
 const buildLintDiagnosticsSummary = ({ diagnostics, okHeadline, errorHeadline }) => {

src/modules/type-diagnostics.js

@@ -292,10 +292,18 @@ export const createTypeDiagnosticsController = ({
     { orderedFallback = false } = {},
   ) => {
     if (orderedFallback) {
-      const tryUrlAt = async (index, firstError = null) => {
+      const tryUrlAt = async (index, failures = []) => {
         if (index >= urls.length) {
+          const reasons = failures
+            .slice(0, 3)
+            .map(reason => (reason instanceof Error ? reason.message : String(reason)))
+          const reasonSummary = reasons.length ? ` Causes: ${reasons.join(' | ')}` : ''
+
           throw new Error(
-            `${errorPrefix}: Tried URLs: ${urls.join(', ')}.${firstError ? ` ${firstError}` : ''}`,
+            `${errorPrefix}: Tried URLs: ${urls.join(', ')}.${reasonSummary}`,
+            {
+              cause: failures.at(-1),
+            },
           )
         }
 
@@ -309,8 +317,7 @@ export const createTypeDiagnosticsController = ({
 
           return response.text()
         } catch (error) {
-          const message = error instanceof Error ? error.message : String(error)
-          return tryUrlAt(index + 1, firstError ?? message)
+          return tryUrlAt(index + 1, [...failures, error])
         }
       }