fixing type extensions

Author: Janther

src/slang-printers/print-assignment-right-side.ts

@@ -3,7 +3,7 @@ import { isChainableExpression } from '../slang-utils/is-chainable-expression.js
 import { printIndentedGroupOrSpacedDocument } from './print-indented-group-or-spaced-document.js';
 
 import type { Doc, doc } from 'prettier';
-import type { Expression } from '../slang-nodes/Expression.js';
+import type { Expression } from '../slang-nodes/Expression.ts';
 
 export function printAssignmentRightSide(
   document: Doc,

src/slang-utils/is-chainable-expression.ts

@@ -4,7 +4,7 @@ import { createKindCheckFunction } from './create-kind-check-function.js';
 import type {
   ChainableExpression,
   StrictAstNode
-} from '../slang-nodes/types.js';
+} from '../slang-nodes/types.d.ts';
 
 export const isChainableExpression = createKindCheckFunction([
   NonterminalKind.FunctionCallExpression,