Part the source into adf/ and markdown/ ahead of the parser

src/markdown/inline-directive-spelling.ts

@@ -0,0 +1,9 @@
+import type { AdfNode } from '../adf/document.ts'
+import type { InlineDirective } from '../adf/inline-directives.ts'
+import { spellAttributes, spellVocabulary } from './directive-attributes.ts'
+import { vocabularyPairs } from '../adf/attribute-vocabulary.ts'
+
+export function spellInlineNodeAttributes(node: AdfNode, directive: InlineDirective): string | undefined {
+  const pairs = vocabularyPairs(node.attrs ?? {}, directive.attributes, directive.slot === undefined ? [] : [directive.slot])
+  return pairs === undefined ? undefined : spellAttributes(spellVocabulary(pairs))
+}