⛔delete of an unqualified identifier in strict mode❗️
only object's configurable properties are "qualified" for "delete", other identifiers are "unqualilfied".
JS ⟩ error ⟩ SyntaxError ⟩ delete of an unqualified identifier in strict mode
replit:delete in sloppy/strict mode
Previouslexical declaration cannot appear in a single-statement context❗️Nextoctal literals not allowed in strict mode❗️
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