biome_js_parser 0.5.7

Biome's JavaScript parser
Documentation
JsModule {
    bom_token: missing (optional),
    interpreter_token: missing (optional),
    directives: JsDirectiveList [],
    items: JsModuleItemList [
        JsClassDeclaration {
            decorators: JsDecoratorList [],
            abstract_token: missing (optional),
            class_token: CLASS_KW@0..6 "class" [] [Whitespace(" ")],
            id: JsIdentifierBinding {
                name_token: IDENT@6..11 "Test" [] [Whitespace(" ")],
            },
            type_parameters: missing (optional),
            extends_clause: JsExtendsClause {
                extends_token: EXTENDS_KW@11..19 "extends" [] [Whitespace(" ")],
                super_class: JsIdentifierExpression {
                    name: JsReferenceIdentifier {
                        value_token: IDENT@19..21 "B" [] [Whitespace(" ")],
                    },
                },
                type_arguments: missing (optional),
            },
            implements_clause: missing (optional),
            l_curly_token: L_CURLY@21..22 "{" [] [],
            members: JsClassMemberList [
                JsMethodClassMember {
                    modifiers: JsMethodModifierList [],
                    async_token: missing (optional),
                    star_token: missing (optional),
                    name: JsLiteralMemberName {
                        value: IDENT@22..29 "test" [Newline("\n"), Whitespace("  ")] [],
                    },
                    question_mark_token: missing (optional),
                    type_parameters: missing (optional),
                    parameters: JsParameters {
                        l_paren_token: L_PAREN@29..30 "(" [] [],
                        items: JsParameterList [],
                        r_paren_token: R_PAREN@30..32 ")" [] [Whitespace(" ")],
                    },
                    return_type_annotation: missing (optional),
                    body: JsFunctionBody {
                        l_curly_token: L_CURLY@32..33 "{" [] [],
                        directives: JsDirectiveList [],
                        statements: JsStatementList [
                            JsExpressionStatement {
                                expression: JsCallExpression {
                                    callee: JsBogusExpression {
                                        items: [
                                            SUPER_KW@33..43 "super" [Newline("\n"), Whitespace("    ")] [],
                                        ],
                                    },
                                    optional_chain_token: missing (optional),
                                    type_arguments: missing (optional),
                                    arguments: JsCallArguments {
                                        l_paren_token: L_PAREN@43..44 "(" [] [],
                                        args: JsCallArgumentList [],
                                        r_paren_token: R_PAREN@44..45 ")" [] [],
                                    },
                                },
                                semicolon_token: SEMICOLON@45..46 ";" [] [],
                            },
                            JsExpressionStatement {
                                expression: JsCallExpression {
                                    callee: JsStaticMemberExpression {
                                        object: JsBogusExpression {
                                            items: [
                                                SUPER_KW@46..56 "super" [Newline("\n"), Whitespace("    ")] [],
                                            ],
                                        },
                                        operator_token: QUESTIONDOT@56..58 "?." [] [],
                                        member: JsName {
                                            value_token: IDENT@58..62 "test" [] [],
                                        },
                                    },
                                    optional_chain_token: missing (optional),
                                    type_arguments: missing (optional),
                                    arguments: JsCallArguments {
                                        l_paren_token: L_PAREN@62..63 "(" [] [],
                                        args: JsCallArgumentList [],
                                        r_paren_token: R_PAREN@63..64 ")" [] [],
                                    },
                                },
                                semicolon_token: SEMICOLON@64..65 ";" [] [],
                            },
                        ],
                        r_curly_token: R_CURLY@65..69 "}" [Newline("\n"), Whitespace("  ")] [],
                    },
                },
            ],
            r_curly_token: R_CURLY@69..71 "}" [Newline("\n")] [],
        },
        JsExpressionStatement {
            expression: JsCallExpression {
                callee: JsBogusExpression {
                    items: [
                        SUPER_KW@71..77 "super" [Newline("\n")] [],
                    ],
                },
                optional_chain_token: missing (optional),
                type_arguments: missing (optional),
                arguments: JsCallArguments {
                    l_paren_token: L_PAREN@77..78 "(" [] [],
                    args: JsCallArgumentList [],
                    r_paren_token: R_PAREN@78..79 ")" [] [],
                },
            },
            semicolon_token: SEMICOLON@79..80 ";" [] [],
        },
    ],
    eof_token: EOF@80..81 "" [Newline("\n")] [],
}

0: JS_MODULE@0..81
  0: (empty)
  1: (empty)
  2: JS_DIRECTIVE_LIST@0..0
  3: JS_MODULE_ITEM_LIST@0..80
    0: JS_CLASS_DECLARATION@0..71
      0: JS_DECORATOR_LIST@0..0
      1: (empty)
      2: CLASS_KW@0..6 "class" [] [Whitespace(" ")]
      3: JS_IDENTIFIER_BINDING@6..11
        0: IDENT@6..11 "Test" [] [Whitespace(" ")]
      4: (empty)
      5: JS_EXTENDS_CLAUSE@11..21
        0: EXTENDS_KW@11..19 "extends" [] [Whitespace(" ")]
        1: JS_IDENTIFIER_EXPRESSION@19..21
          0: JS_REFERENCE_IDENTIFIER@19..21
            0: IDENT@19..21 "B" [] [Whitespace(" ")]
        2: (empty)
      6: (empty)
      7: L_CURLY@21..22 "{" [] []
      8: JS_CLASS_MEMBER_LIST@22..69
        0: JS_METHOD_CLASS_MEMBER@22..69
          0: JS_METHOD_MODIFIER_LIST@22..22
          1: (empty)
          2: (empty)
          3: JS_LITERAL_MEMBER_NAME@22..29
            0: IDENT@22..29 "test" [Newline("\n"), Whitespace("  ")] []
          4: (empty)
          5: (empty)
          6: JS_PARAMETERS@29..32
            0: L_PAREN@29..30 "(" [] []
            1: JS_PARAMETER_LIST@30..30
            2: R_PAREN@30..32 ")" [] [Whitespace(" ")]
          7: (empty)
          8: JS_FUNCTION_BODY@32..69
            0: L_CURLY@32..33 "{" [] []
            1: JS_DIRECTIVE_LIST@33..33
            2: JS_STATEMENT_LIST@33..65
              0: JS_EXPRESSION_STATEMENT@33..46
                0: JS_CALL_EXPRESSION@33..45
                  0: JS_BOGUS_EXPRESSION@33..43
                    0: SUPER_KW@33..43 "super" [Newline("\n"), Whitespace("    ")] []
                  1: (empty)
                  2: (empty)
                  3: JS_CALL_ARGUMENTS@43..45
                    0: L_PAREN@43..44 "(" [] []
                    1: JS_CALL_ARGUMENT_LIST@44..44
                    2: R_PAREN@44..45 ")" [] []
                1: SEMICOLON@45..46 ";" [] []
              1: JS_EXPRESSION_STATEMENT@46..65
                0: JS_CALL_EXPRESSION@46..64
                  0: JS_STATIC_MEMBER_EXPRESSION@46..62
                    0: JS_BOGUS_EXPRESSION@46..56
                      0: SUPER_KW@46..56 "super" [Newline("\n"), Whitespace("    ")] []
                    1: QUESTIONDOT@56..58 "?." [] []
                    2: JS_NAME@58..62
                      0: IDENT@58..62 "test" [] []
                  1: (empty)
                  2: (empty)
                  3: JS_CALL_ARGUMENTS@62..64
                    0: L_PAREN@62..63 "(" [] []
                    1: JS_CALL_ARGUMENT_LIST@63..63
                    2: R_PAREN@63..64 ")" [] []
                1: SEMICOLON@64..65 ";" [] []
            3: R_CURLY@65..69 "}" [Newline("\n"), Whitespace("  ")] []
      9: R_CURLY@69..71 "}" [Newline("\n")] []
    1: JS_EXPRESSION_STATEMENT@71..80
      0: JS_CALL_EXPRESSION@71..79
        0: JS_BOGUS_EXPRESSION@71..77
          0: SUPER_KW@71..77 "super" [Newline("\n")] []
        1: (empty)
        2: (empty)
        3: JS_CALL_ARGUMENTS@77..79
          0: L_PAREN@77..78 "(" [] []
          1: JS_CALL_ARGUMENT_LIST@78..78
          2: R_PAREN@78..79 ")" [] []
      1: SEMICOLON@79..80 ";" [] []
  4: EOF@80..81 "" [Newline("\n")] []
--
super_expression_err.js:3:5 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  × `super` is only valid inside of a class constructor of a subclass.
  
    1 │ class Test extends B {
    2 │   test() {
  > 3 │     super();
      │     ^^^^^
    4 │     super?.test();
    5 │   }
  
--
super_expression_err.js:4:5 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  × Super doesn't support optional chaining as super can never be null
  
    2 │   test() {
    3 │     super();
  > 4 │     super?.test();
      │     ^^^^^
    5 │   }
    6 │ }
  
--
super_expression_err.js:7:1 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  × `super` is only valid inside of a class constructor of a subclass.
  
    5 │   }
    6 │ }
  > 7 │ super();
      │ ^^^^^
    8 │ 
  
--
class Test extends B {
  test() {
    super();
    super?.test();
  }
}
super();