biome_js_parser 0.5.7

Biome's JavaScript parser
Documentation
JsModule {
    bom_token: missing (optional),
    interpreter_token: missing (optional),
    directives: JsDirectiveList [],
    items: JsModuleItemList [
        JsExpressionStatement {
            expression: JsSequenceExpression {
                left: JsSequenceExpression {
                    left: JsSequenceExpression {
                        left: JsSequenceExpression {
                            left: JsNumberLiteralExpression {
                                value_token: JS_NUMBER_LITERAL@0..2 "00" [] [],
                            },
                            comma_token: COMMA@2..4 "," [] [Whitespace(" ")],
                            right: JsNumberLiteralExpression {
                                value_token: JS_NUMBER_LITERAL@4..7 "012" [] [],
                            },
                        },
                        comma_token: COMMA@7..9 "," [] [Whitespace(" ")],
                        right: JsNumberLiteralExpression {
                            value_token: JS_NUMBER_LITERAL@9..11 "08" [] [],
                        },
                    },
                    comma_token: COMMA@11..13 "," [] [Whitespace(" ")],
                    right: JsNumberLiteralExpression {
                        value_token: JS_NUMBER_LITERAL@13..16 "091" [] [],
                    },
                },
                comma_token: COMMA@16..18 "," [] [Whitespace(" ")],
                right: JsNumberLiteralExpression {
                    value_token: JS_NUMBER_LITERAL@18..39 "0789" [] [Whitespace(" "), Comments("// parser errors")],
                },
            },
            semicolon_token: missing (optional),
        },
        JsExpressionStatement {
            expression: JsSequenceExpression {
                left: JsSequenceExpression {
                    left: JsBigintLiteralExpression {
                        value_token: JS_BIGINT_LITERAL@39..43 "01n" [Newline("\n")] [],
                    },
                    comma_token: COMMA@43..45 "," [] [Whitespace(" ")],
                    right: JsNumberLiteralExpression {
                        value_token: JS_NUMBER_LITERAL@45..48 "0_0" [] [],
                    },
                },
                comma_token: COMMA@48..50 "," [] [Whitespace(" ")],
                right: JsNumberLiteralExpression {
                    value_token: JS_NUMBER_LITERAL@50..70 "01.2" [] [Whitespace(" "), Comments("// lexer errors")],
                },
            },
            semicolon_token: missing (optional),
        },
        JsBogusStatement {
            items: [
                ERROR_TOKEN@70..76 "\"test" [Newline("\n")] [],
                IDENT@76..86 "continues" [Newline("\n")] [],
                ERROR_TOKEN@86..118 "\" // unterminated string literal" [] [],
            ],
        },
    ],
    eof_token: EOF@118..119 "" [Newline("\n")] [],
}

0: JS_MODULE@0..119
  0: (empty)
  1: (empty)
  2: JS_DIRECTIVE_LIST@0..0
  3: JS_MODULE_ITEM_LIST@0..118
    0: JS_EXPRESSION_STATEMENT@0..39
      0: JS_SEQUENCE_EXPRESSION@0..39
        0: JS_SEQUENCE_EXPRESSION@0..16
          0: JS_SEQUENCE_EXPRESSION@0..11
            0: JS_SEQUENCE_EXPRESSION@0..7
              0: JS_NUMBER_LITERAL_EXPRESSION@0..2
                0: JS_NUMBER_LITERAL@0..2 "00" [] []
              1: COMMA@2..4 "," [] [Whitespace(" ")]
              2: JS_NUMBER_LITERAL_EXPRESSION@4..7
                0: JS_NUMBER_LITERAL@4..7 "012" [] []
            1: COMMA@7..9 "," [] [Whitespace(" ")]
            2: JS_NUMBER_LITERAL_EXPRESSION@9..11
              0: JS_NUMBER_LITERAL@9..11 "08" [] []
          1: COMMA@11..13 "," [] [Whitespace(" ")]
          2: JS_NUMBER_LITERAL_EXPRESSION@13..16
            0: JS_NUMBER_LITERAL@13..16 "091" [] []
        1: COMMA@16..18 "," [] [Whitespace(" ")]
        2: JS_NUMBER_LITERAL_EXPRESSION@18..39
          0: JS_NUMBER_LITERAL@18..39 "0789" [] [Whitespace(" "), Comments("// parser errors")]
      1: (empty)
    1: JS_EXPRESSION_STATEMENT@39..70
      0: JS_SEQUENCE_EXPRESSION@39..70
        0: JS_SEQUENCE_EXPRESSION@39..48
          0: JS_BIGINT_LITERAL_EXPRESSION@39..43
            0: JS_BIGINT_LITERAL@39..43 "01n" [Newline("\n")] []
          1: COMMA@43..45 "," [] [Whitespace(" ")]
          2: JS_NUMBER_LITERAL_EXPRESSION@45..48
            0: JS_NUMBER_LITERAL@45..48 "0_0" [] []
        1: COMMA@48..50 "," [] [Whitespace(" ")]
        2: JS_NUMBER_LITERAL_EXPRESSION@50..70
          0: JS_NUMBER_LITERAL@50..70 "01.2" [] [Whitespace(" "), Comments("// lexer errors")]
      1: (empty)
    2: JS_BOGUS_STATEMENT@70..118
      0: ERROR_TOKEN@70..76 "\"test" [Newline("\n")] []
      1: IDENT@76..86 "continues" [Newline("\n")] []
      2: ERROR_TOKEN@86..118 "\" // unterminated string literal" [] []
  4: EOF@118..119 "" [Newline("\n")] []
--
literals.js:1:1 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  × "0"-prefixed octal literals are deprecated; use the "0o" prefix instead.
  
  > 1 │ 00, 012, 08, 091, 0789 // parser errors
      │ ^^
    2 │ 01n, 0_0, 01.2 // lexer errors
    3 │ "test
  
--
literals.js:1:5 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  × "0"-prefixed octal literals are deprecated; use the "0o" prefix instead.
  
  > 1 │ 00, 012, 08, 091, 0789 // parser errors
      │     ^^^
    2 │ 01n, 0_0, 01.2 // lexer errors
    3 │ "test
  
--
literals.js:1:10 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  × Decimals with leading zeros are not allowed in strict mode.
  
  > 1 │ 00, 012, 08, 091, 0789 // parser errors
      │          ^^
    2 │ 01n, 0_0, 01.2 // lexer errors
    3 │ "test
  
--
literals.js:1:14 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  × Decimals with leading zeros are not allowed in strict mode.
  
  > 1 │ 00, 012, 08, 091, 0789 // parser errors
      │              ^^^
    2 │ 01n, 0_0, 01.2 // lexer errors
    3 │ "test
  
--
literals.js:1:19 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  × Decimals with leading zeros are not allowed in strict mode.
  
  > 1 │ 00, 012, 08, 091, 0789 // parser errors
      │                   ^^^^
    2 │ 01n, 0_0, 01.2 // lexer errors
    3 │ "test
  
--
literals.js:2:1 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  × Octal literals are not allowed for BigInts.
  
    1 │ 00, 012, 08, 091, 0789 // parser errors
  > 2 │ 01n, 0_0, 01.2 // lexer errors
      │ ^^^
    3 │ "test
    4 │ continues" // unterminated string literal
  
--
literals.js:2:7 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  × numeric separator can not be used after leading 0
  
    1 │ 00, 012, 08, 091, 0789 // parser errors
  > 2 │ 01n, 0_0, 01.2 // lexer errors
      │       
    3 │ "test
    4 │ continues" // unterminated string literal
  
--
literals.js:2:11 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  × unexpected number
  
    1 │ 00, 012, 08, 091, 0789 // parser errors
  > 2 │ 01n, 0_0, 01.2 // lexer errors
      │           ^^^
    3 │ "test
    4 │ continues" // unterminated string literal
  
--
literals.js:3:1 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  × unterminated string literal
  
    1 │ 00, 012, 08, 091, 0789 // parser errors
    2 │ 01n, 0_0, 01.2 // lexer errors
  > 3 │ "test
      │ ^^^^^
    4 │ continues" // unterminated string literal
    5 │ 
  
  i 
  
    1 │ 00, 012, 08, 091, 0789 // parser errors
    2 │ 01n, 0_0, 01.2 // lexer errors
  > 3 │ "test
      │ ^^^^^
    4 │ continues" // unterminated string literal
    5 │ 
  
  i line breaks here
  
    1 │ 00, 012, 08, 091, 0789 // parser errors
    2 │ 01n, 0_0, 01.2 // lexer errors
  > 3 │ "test
      │      
  > 4 │ continues" // unterminated string literal
      │ ^
    5 │ 
  
--
literals.js:4:10 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  × unterminated string literal
  
    2 │ 01n, 0_0, 01.2 // lexer errors
    3 │ "test
  > 4 │ continues" // unterminated string literal
      │          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    5 │ 
  
  i 
  
    2 │ 01n, 0_0, 01.2 // lexer errors
    3 │ "test
  > 4 │ continues" // unterminated string literal
      │          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    5 │ 
  
  i line breaks here
  
    2 │ 01n, 0_0, 01.2 // lexer errors
    3 │ "test
  > 4 │ continues" // unterminated string literal
      │                                          
  > 5 │ 
      │ 
  
--
00, 012, 08, 091, 0789 // parser errors
01n, 0_0, 01.2 // lexer errors
"test
continues" // unterminated string literal