fix: isStaticが真ならショートハンド構文を無効化

Author: uzmoi

src/parser/syntaxes/expressions.ts

@@ -602,6 +602,7 @@ function parseObject(s: ITokenStream, isStatic: boolean): Ast.Obj {
 
 		let v: Ast.Expression;
 
+		if (isStatic) s.expect(TokenKind.Colon);
 		if (s.is(TokenKind.Colon)){
 			s.next();
 

test/aison.ts

@@ -62,6 +62,10 @@ greet()`)).toThrow();
 		expect(() => AiSON.parse('{key: (3 + 5)}')).toThrow();
 	});
 
+	test.concurrent('not allowed: object shorthand', () => {
+		expect(() => AiSON.parse('{key}')).toThrow();
+	});
+
 	test.concurrent('not allowed: labeled expression', () => {
 		expect(() => AiSON.parse('#label: eval { 1 }')).toThrow();
 	});