JsModule {
    bom_token: missing (optional),
    interpreter_token: missing (optional),
    directives: JsDirectiveList [],
    items: JsModuleItemList [
        JsExpressionStatement {
            expression: JsBinaryExpression {
                left: JsStaticMemberExpression {
                    object: JsCallExpression {
                        callee: JsIdentifierExpression {
                            name: JsReferenceIdentifier {
                                value_token: IDENT@0..6 "String" [] [],
                            },
                        },
                        optional_chain_token: missing (optional),
                        type_arguments: missing (optional),
                        arguments: JsCallArguments {
                            l_paren_token: L_PAREN@6..7 "(" [] [],
                            args: JsCallArgumentList [
                                JsIdentifierExpression {
                                    name: JsReferenceIdentifier {
                                        value_token: IDENT@7..11 "item" [] [],
                                    },
                                },
                            ],
                            r_paren_token: R_PAREN@11..12 ")" [] [],
                        },
                    },
                    operator_token: QUESTIONDOT@12..14 "?." [] [],
                    member: JsName {
                        value_token: IDENT@14..16 "b" [] [Whitespace(" ")],
                    },
                },
                operator_token: L_ANGLE@16..18 "<" [] [Whitespace(" ")],
                right: JsNumberLiteralExpression {
                    value_token: JS_NUMBER_LITERAL@18..19 "0" [] [],
                },
            },
            semicolon_token: SEMICOLON@19..20 ";" [] [],
        },
        JsExpressionStatement {
            expression: JsBinaryExpression {
                left: JsStaticMemberExpression {
                    object: JsCallExpression {
                        callee: JsIdentifierExpression {
                            name: JsReferenceIdentifier {
                                value_token: IDENT@20..27 "String" [Newline("\n")] [],
                            },
                        },
                        optional_chain_token: missing (optional),
                        type_arguments: missing (optional),
                        arguments: JsCallArguments {
                            l_paren_token: L_PAREN@27..28 "(" [] [],
                            args: JsCallArgumentList [
                                JsIdentifierExpression {
                                    name: JsReferenceIdentifier {
                                        value_token: IDENT@28..32 "item" [] [],
                                    },
                                },
                            ],
                            r_paren_token: R_PAREN@32..33 ")" [] [],
                        },
                    },
                    operator_token: QUESTIONDOT@33..35 "?." [] [],
                    member: JsName {
                        value_token: IDENT@35..37 "b" [] [Whitespace(" ")],
                    },
                },
                operator_token: L_ANGLE@37..38 "<" [] [],
                right: JsIdentifierExpression {
                    name: JsReferenceIdentifier {
                        value_token: IDENT@38..42 "aBcd" [] [],
                    },
                },
            },
            semicolon_token: SEMICOLON@42..43 ";" [] [],
        },
    ],
    eof_token: EOF@43..44 "" [Newline("\n")] [],
}

0: JS_MODULE@0..44
  0: (empty)
  1: (empty)
  2: JS_DIRECTIVE_LIST@0..0
  3: JS_MODULE_ITEM_LIST@0..43
    0: JS_EXPRESSION_STATEMENT@0..20
      0: JS_BINARY_EXPRESSION@0..19
        0: JS_STATIC_MEMBER_EXPRESSION@0..16
          0: JS_CALL_EXPRESSION@0..12
            0: JS_IDENTIFIER_EXPRESSION@0..6
              0: JS_REFERENCE_IDENTIFIER@0..6
                0: IDENT@0..6 "String" [] []
            1: (empty)
            2: (empty)
            3: JS_CALL_ARGUMENTS@6..12
              0: L_PAREN@6..7 "(" [] []
              1: JS_CALL_ARGUMENT_LIST@7..11
                0: JS_IDENTIFIER_EXPRESSION@7..11
                  0: JS_REFERENCE_IDENTIFIER@7..11
                    0: IDENT@7..11 "item" [] []
              2: R_PAREN@11..12 ")" [] []
          1: QUESTIONDOT@12..14 "?." [] []
          2: JS_NAME@14..16
            0: IDENT@14..16 "b" [] [Whitespace(" ")]
        1: L_ANGLE@16..18 "<" [] [Whitespace(" ")]
        2: JS_NUMBER_LITERAL_EXPRESSION@18..19
          0: JS_NUMBER_LITERAL@18..19 "0" [] []
      1: SEMICOLON@19..20 ";" [] []
    1: JS_EXPRESSION_STATEMENT@20..43
      0: JS_BINARY_EXPRESSION@20..42
        0: JS_STATIC_MEMBER_EXPRESSION@20..37
          0: JS_CALL_EXPRESSION@20..33
            0: JS_IDENTIFIER_EXPRESSION@20..27
              0: JS_REFERENCE_IDENTIFIER@20..27
                0: IDENT@20..27 "String" [Newline("\n")] []
            1: (empty)
            2: (empty)
            3: JS_CALL_ARGUMENTS@27..33
              0: L_PAREN@27..28 "(" [] []
              1: JS_CALL_ARGUMENT_LIST@28..32
                0: JS_IDENTIFIER_EXPRESSION@28..32
                  0: JS_REFERENCE_IDENTIFIER@28..32
                    0: IDENT@28..32 "item" [] []
              2: R_PAREN@32..33 ")" [] []
          1: QUESTIONDOT@33..35 "?." [] []
          2: JS_NAME@35..37
            0: IDENT@35..37 "b" [] [Whitespace(" ")]
        1: L_ANGLE@37..38 "<" [] []
        2: JS_IDENTIFIER_EXPRESSION@38..42
          0: JS_REFERENCE_IDENTIFIER@38..42
            0: IDENT@38..42 "aBcd" [] []
      1: SEMICOLON@42..43 ";" [] []
  4: EOF@43..44 "" [Newline("\n")] []