feat: handle multiple declarations by outputting twice

Co-authored-by: Braden Wiggins <[email protected]>

.changeset/yellow-buses-hammer.md

@@ -0,0 +1,5 @@
+---
+'extractinator': minor
+---
+
+feat: handle multiple declarations by outputting twice

src/files/typescript.ts

@@ -15,29 +15,24 @@ export function parseTSFile({
 
 	//? Loop over all the export declarations
 	for (const [name, declarations] of file.getExportedDeclarations()) {
-		// todo handle this
-		if (declarations.length > 1) {
-			throw new Error(
-				`Multiple declarations are not handled yet, please file issue "${file_name}"`,
-			)
-		}
-
-		const [declaration] = declarations
+		for (const declaration of declarations) {
+			const tsdoc_node_parent = declaration.getFirstChildIfKind(ts.SyntaxKind.JSDoc)
+				? //? Check whether the declaration has a comment
+				  declaration
+				: //? Find the comment by traversing up the parent, this should be safe here
+				  declaration
+						.getAncestors()
+						.find((ancestor) => !!ancestor.getFirstChildIfKind(ts.SyntaxKind.JSDoc))
 
-		const tsdoc_node_parent = declaration.getFirstChildIfKind(ts.SyntaxKind.JSDoc)
-			? //? Check whether the declaration has a comment
-				declaration
-			: //? Find the comment by traversing up the parent, this should be safe here
-				declaration
-					.getAncestors()
-					.find((ancestor) => !!ancestor.getFirstChildIfKind(ts.SyntaxKind.JSDoc))
-
-		export_bits.push({
-			name,
-			type: getType(declaration),
-			isDefaultExport: name == 'default',
-			comment: tsdoc_node_parent ? parseCommentFromNode(tsdoc_node_parent, tsdoc) : undefined,
-		})
+			export_bits.push({
+				name,
+				type: getType(declaration),
+				isDefaultExport: name == 'default',
+				comment: tsdoc_node_parent
+					? parseCommentFromNode(tsdoc_node_parent, tsdoc)
+					: undefined,
+			})
+		}
 	}
 
 	return {

tests/test-files/multiple-declarations.ts

@@ -0,0 +1,27 @@
+/**
+ * Adds two or three numbers together.
+ * @param a The first number to add.
+ * @param b The second number to add.
+ * @returns The sum of the two numbers.
+ */
+export function add(a: number, b: number): number
+
+/**
+ * Adds two or three numbers together.
+ * @param a The first number to add.
+ * @param b The second number to add.
+ * @param c The third number to add.
+ * @returns The sum of the three numbers.
+ */
+export function add(a: number, b: number, c: number): number
+
+/**
+ * Adds two or three numbers together.
+ * @param a The first number to add.
+ * @param b The second number to add.
+ * @param c Optional third number to add.
+ * @returns The sum of the input numbers.
+ */
+export function add(a: number, b: number, c?: number): number {
+	return a + b + (c ?? 0)
+}