---
source: crates/biome_json_parser/tests/spec_test.rs
expression: snapshot
---
## Input
```json
[1,,2]
```
## AST
```
JsonRoot {
bom_token: missing (optional),
value: JsonArrayValue {
l_brack_token: L_BRACK@0..1 "[" [] [],
elements: JsonArrayElementList [
JsonNumberValue {
value_token: JSON_NUMBER_LITERAL@1..2 "1" [] [],
},
COMMA@2..3 "," [] [],
missing element,
COMMA@3..4 "," [] [],
JsonNumberValue {
value_token: JSON_NUMBER_LITERAL@4..5 "2" [] [],
},
],
r_brack_token: R_BRACK@5..6 "]" [] [],
},
eof_token: EOF@6..6 "" [] [],
}
```
## CST
```
0: JSON_ROOT@0..6
0: (empty)
1: JSON_ARRAY_VALUE@0..6
0: L_BRACK@0..1 "[" [] []
1: JSON_ARRAY_ELEMENT_LIST@1..5
0: JSON_NUMBER_VALUE@1..2
0: JSON_NUMBER_LITERAL@1..2 "1" [] []
1: COMMA@2..3 "," [] []
2: (empty)
3: COMMA@3..4 "," [] []
4: JSON_NUMBER_VALUE@4..5
0: JSON_NUMBER_LITERAL@4..5 "2" [] []
2: R_BRACK@5..6 "]" [] []
2: EOF@6..6 "" [] []
```
## Diagnostics
```
array_double_comma.json:1:4 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
× Expected an array, an object, or a literal but instead found ','.
> 1 │ [1,,2]
│ ^
i Expected an array, an object, or a literal here.
> 1 │ [1,,2]
│ ^
```