valueStartAssumeTypeOk

fn valueStartAssumeTypeOk(self: *Stringify) !void {
    assert(!self.isComplete()); // JSON document already complete.
    switch (self.next_punctuation) {
        .the_beginning => {
            // No indentation for the very beginning.
        },
        .none => {
            // First item in a container.
            try self.indent();
        },
        .comma => {
            // Subsequent item in a container.
            try self.writer.writeByte(',');
            try self.indent();
        },
        .colon => {
            try self.writer.writeByte(':');
            if (self.options.whitespace != .minified) {
                try self.writer.writeByte(' ');
            }
        },
    }
}