1(boolean_scalar) @boolean
 2(null_scalar) @constant.builtin
 3
 4[
 5  (double_quote_scalar)
 6  (single_quote_scalar)
 7  (block_scalar)
 8  (string_scalar)
 9] @string
10
11(escape_sequence) @string.escape
12
13[
14  (integer_scalar)
15  (float_scalar)
16] @number
17
18(comment) @comment
19
20[
21  (anchor_name)
22  (alias_name)
23  (tag)
24] @type
25
26key: (flow_node (plain_scalar (string_scalar) @property))
27
28[
29 ","
30 "-"
31 ":"
32 ">"
33 "?"
34 "|"
35] @punctuation.delimiter
36
37[
38 "["
39 "]"
40 "{"
41 "}"
42] @punctuation.bracket
43
44[
45 "*"
46 "&"
47 "---"
48 "..."
49] @punctuation.special