1(boolean_scalar) @boolean
 2
 3(null_scalar) @constant.builtin
 4
 5[
 6  (double_quote_scalar)
 7  (single_quote_scalar)
 8  (block_scalar)
 9  (string_scalar)
10] @string
11
12(escape_sequence) @string.escape
13
14[
15  (integer_scalar)
16  (float_scalar)
17] @number
18
19(comment) @comment
20
21[
22  (anchor_name)
23  (alias_name)
24  (tag)
25] @type
26
27key: (flow_node
28  [
29    (plain_scalar
30      (string_scalar))
31    (double_quote_scalar)
32    (single_quote_scalar)
33  ] @property)
34
35[
36  ","
37  "-"
38  ":"
39  ">"
40  "?"
41  "|"
42] @punctuation.delimiter
43
44[
45  "["
46  "]"
47  "{"
48  "}"
49] @punctuation.bracket
50
51[
52  "*"
53  "&"
54  "---"
55  "..."
56] @punctuation.special