There might be no normative significance but I mean there is no way to put the "Literal" production in a lexer. If a lexer produce token with type ”Literal“, syntactical parser will not be able to decide to use it as a ”Literal“ or a ”StringLiteral“.
So I think keeping this rule in current location might confuse the ones who want to implement this spec.
There's no normative significance, as Michael Dyck conjectured. It seems we could move Literal. Perhaps Waldemar or Allen has a preference. At this point I am ok with letting the traditional location of Literal stand.
I'm working a on ES parser recently and noticed something might be wrong about the symbol “Literal”.
Since “Literal” and “StringLiteral" "NumericLiteral" appears in lexical grammar , I believe “Literal” should be a non-terminal symbol. Also there is no other rule using “Literal” in lexical grammar. As all above I think the following description is a syntactical grammar rule instead of a lexical grammar rule: