Attribute value doesn't support empty array ([])

[Yash-Singh1]

I can't do something like [attr=[]] and expect attr to be equal to an empty array. Instead, esquery throws a syntax error:

Expected " ", "'", ".", "/", "\"", "type(", [0-9] or [^ [\],():#!=><~+.] but "[" found.

[miluoshi]

What about [attr.length=0]. Does it work for you?