Hashbang commentsThe #! comment at the absolute start of a script or module is treated as a normal comment and is ignored by the JavaScript engine.javascriptJavaScriptwidely2020-03-242022-09-24https://tc39.es/ecma262/multipage/ecmascript-language-lexical-grammar.html#sec-hashbanghttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Lexical_grammar#hashbang_commentsjavascript.grammar.hashbang_commentshttps://nowyoucanuse.com/features--hashbang-comments.html