Function as_statement_array

lib/compress.js:1995–2001

(thing)

    }

    function as_statement_array(thing) {
        if (thing === null) return [];
        if (thing instanceof AST_BlockStatement) return all(thing.body, safe_to_trim) ? thing.body : [ thing ];
        if (thing instanceof AST_EmptyStatement) return [];
        if (is_statement(thing)) return [ thing ];
        throw new Error("Can't convert thing to statement array");
    }

    function is_empty(thing) {
        if (thing === null) return true;