fix: support export type * (#10)

Author: dummdidumm

.changeset/twelve-heads-lead.md

@@ -0,0 +1,5 @@
+---
+'@sveltejs/acorn-typescript': patch
+---
+
+fix: support `export type *`

src/index.ts

@@ -3116,9 +3116,15 @@ export function tsPlugin(options?: {
 					this.importOrExportOuterKind = undefined;
 					return this.finishNode(decl, 'TSNamespaceExportDeclaration');
 				} else {
+					const lookahead2 = this.lookahead(2).type;
+
+					// Ideally we can just say "ok this is a type export of some kind"
+					// but that doesn't work for shouldParseExportStatement() below
+					// which wants to handle the `export type Foo = ...` case
 					if (
 						this.ts_isContextualWithState(enterHead, tokTypes.type) &&
-						this.lookahead(2).type === tt.braceL
+						(lookahead2 === tt.braceL || // export type { ... }
+							lookahead2 === tt.star) // export type *
 					) {
 						this.next();
 						this.importOrExportOuterKind = 'type';

test/export_type_star/expected.json

@@ -0,0 +1,52 @@
+{
+	"body": [
+		{
+			"end": 27,
+			"exportKind": "type",
+			"exported": null,
+			"loc": {
+				"end": {
+					"column": 27,
+					"line": 1
+				},
+				"start": {
+					"column": 0,
+					"line": 1
+				}
+			},
+			"source": {
+				"end": 26,
+				"loc": {
+					"end": {
+						"column": 26,
+						"line": 1
+					},
+					"start": {
+						"column": 19,
+						"line": 1
+					}
+				},
+				"raw": "'./foo'",
+				"start": 19,
+				"type": "Literal",
+				"value": "./foo"
+			},
+			"start": 0,
+			"type": "ExportAllDeclaration"
+		}
+	],
+	"end": 27,
+	"loc": {
+		"end": {
+			"column": 27,
+			"line": 1
+		},
+		"start": {
+			"column": 0,
+			"line": 1
+		}
+	},
+	"sourceType": "module",
+	"start": 0,
+	"type": "Program"
+}

test/export_type_star/input.ts

@@ -0,0 +1 @@
+export type * from './foo';