Fix to support case-insensitive titles

Closes #20

Author: myl7

src/config.ts

@@ -67,6 +67,8 @@ type NameFilter = ((title: string) => boolean) | string[]
 
 export function nameFilter(filter: NameFilter) {
   return (title: string) => {
-    return typeof filter == 'function' ? filter(title) : filter.includes(title)
+    return typeof filter == 'function'
+      ? filter(title)
+      : filter.map((f) => f.toLowerCase()).includes(title.toLowerCase())
   }
 }

test/__snapshots__/index.spec.ts.snap

@@ -55,6 +55,14 @@ exports[`GitHub beta blockquote-based admonitions with titles like [!NOTE] > sho
 </div>"
 `;
 
+exports[`GitHub beta blockquote-based admonitions with titles like [!NOTE] > should transform with case-insensitive titles from issue #20 1`] = `
+"<h1>Admonitions</h1>
+<div class="admonition">
+<p class="admonition-title">nOTe</p>
+<p>test</p>
+</div>"
+`;
+
 exports[`GitHub beta blockquote-based admonitions with titles like [!NOTE] > should transform with nested ones 1`] = `
 "<h1>Admonitions</h1>
 <div class="admonition">

test/index.spec.ts

@@ -107,6 +107,18 @@ describe('GitHub beta blockquote-based admonitions with titles like [!NOTE]', fu
     },
   })
 
+  defineCase('should transform with case-insensitive titles from issue #20', {
+    input: `\
+# Admonitions
+> [!nOTe]
+> test
+`,
+    assertions(html) {
+      const elem = selectOne('div.admonition > p.admonition-title:first-child', parseDocument(html))
+      expect(elem).to.have.nested.property('firstChild.data', 'nOTe')
+    },
+  })
+
   defineCase('should not transform when title is not in form [!NOTE] but legacy **Note**', {
     input: `\
 # Admonitions