Merge pull request #18 from manuel3108/feat/support-indexed-access-type

feat: support indexed access type
sveltejs · Jan 9, 2025 · 5269314 · 5269314
2 parents a486464 + 205a2e8
commit 5269314
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Showing 4 changed files with 25 additions and 0 deletions.
diff --git a/src/handlers.js b/src/handlers.js
@@ -556,6 +556,12 @@ function handle_type_annotation(node, state) {
 			state.commands.push(' : ');
 			handle_type_annotation(node.falseType, state);
 			break;
+		case 'TSIndexedAccessType':
+			handle_type_annotation(node.objectType, state);
+			state.commands.push('[');
+			handle_type_annotation(node.indexType, state);
+			state.commands.push(']');
+			break;
 		default:
 			throw new Error(`Not implemented type annotation ${node.type}`);
 	}

diff --git a/test/samples/ts-index-access-type/expected.ts b/test/samples/ts-index-access-type/expected.ts
@@ -0,0 +1,4 @@
+type A = { a: string; b: number };
+type B = A['b'];
+
+const c: A['b'] = 1;
diff --git a/test/samples/ts-index-access-type/expected.ts.map b/test/samples/ts-index-access-type/expected.ts.map
@@ -0,0 +1,11 @@
+{
+  "version": 3,
+  "names": [],
+  "sources": [
+    "input.js"
+  ],
+  "sourcesContent": [
+    "type A = { a: string; b: number };\ntype B = A['b'];\n\nconst c: A['b'] = 1;\n"
+  ],
+  "mappings": "KAAK,CAAC,KAAK,CAAC,UAAU,CAAC;KAClB,CAAC,GAAG,CAAC,CAAC,GAAG;;MAER,CAAS,EAAN,CAAC,CAAC,GAAG,IAAI,CAAC"
+}
diff --git a/test/samples/ts-index-access-type/input.ts b/test/samples/ts-index-access-type/input.ts
@@ -0,0 +1,4 @@
+type A = { a: string; b: number };
+type B = A['b'];
+
+const c: A['b'] = 1;