JSTests/stress/arrow-function-syntax.js - external/github.com/WebKit/webkit - Git at Google

 checkScriptSyntax(`()=>42`);
 checkScriptSyntax(`()=>42
 `);
 checkScriptSyntax(`()=>42//Hello`);
 checkScriptSyntax(`()=>42//Hello
 `);
	checkScriptSyntax(`()=>42`);
	checkScriptSyntax(`()=>42
	`);
	checkScriptSyntax(`()=>42//Hello`);
	checkScriptSyntax(`()=>42//Hello
	`);