biome_js_parser 0.5.7

Biome's JavaScript parser
Documentation 
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JsScript {
    bom_token: missing (optional),
    interpreter_token: missing (optional),
    directives: JsDirectiveList [],
    statements: JsStatementList [
        JsVariableStatement {
            declaration: JsVariableDeclaration {
                await_token: missing (optional),
                kind: LET_KW@0..14 "let" [Comments("// SCRIPT"), Newline("\n")] [Whitespace(" ")],
                declarators: JsVariableDeclaratorList [
                    JsVariableDeclarator {
                        id: JsBogusBinding {
                            items: [
                                IDENT@14..18 "let" [] [Whitespace(" ")],
                            ],
                        },
                        variable_annotation: missing (optional),
                        initializer: JsInitializerClause {
                            eq_token: EQ@18..20 "=" [] [Whitespace(" ")],
                            expression: JsNumberLiteralExpression {
                                value_token: JS_NUMBER_LITERAL@20..21 "5" [] [],
                            },
                        },
                    },
                ],
            },
            semicolon_token: SEMICOLON@21..22 ";" [] [],
        },
        JsVariableStatement {
            declaration: JsVariableDeclaration {
                await_token: missing (optional),
                kind: CONST_KW@22..29 "const" [Newline("\n")] [Whitespace(" ")],
                declarators: JsVariableDeclaratorList [
                    JsVariableDeclarator {
                        id: JsBogusBinding {
                            items: [
                                IDENT@29..33 "let" [] [Whitespace(" ")],
                            ],
                        },
                        variable_annotation: missing (optional),
                        initializer: JsInitializerClause {
                            eq_token: EQ@33..35 "=" [] [Whitespace(" ")],
                            expression: JsNumberLiteralExpression {
                                value_token: JS_NUMBER_LITERAL@35..36 "5" [] [],
                            },
                        },
                    },
                ],
            },
            semicolon_token: SEMICOLON@36..37 ";" [] [],
        },
    ],
    eof_token: EOF@37..38 "" [Newline("\n")] [],
}

0: JS_SCRIPT@0..38
  0: (empty)
  1: (empty)
  2: JS_DIRECTIVE_LIST@0..0
  3: JS_STATEMENT_LIST@0..37
    0: JS_VARIABLE_STATEMENT@0..22
      0: JS_VARIABLE_DECLARATION@0..21
        0: (empty)
        1: LET_KW@0..14 "let" [Comments("// SCRIPT"), Newline("\n")] [Whitespace(" ")]
        2: JS_VARIABLE_DECLARATOR_LIST@14..21
          0: JS_VARIABLE_DECLARATOR@14..21
            0: JS_BOGUS_BINDING@14..18
              0: IDENT@14..18 "let" [] [Whitespace(" ")]
            1: (empty)
            2: JS_INITIALIZER_CLAUSE@18..21
              0: EQ@18..20 "=" [] [Whitespace(" ")]
              1: JS_NUMBER_LITERAL_EXPRESSION@20..21
                0: JS_NUMBER_LITERAL@20..21 "5" [] []
      1: SEMICOLON@21..22 ";" [] []
    1: JS_VARIABLE_STATEMENT@22..37
      0: JS_VARIABLE_DECLARATION@22..36
        0: (empty)
        1: CONST_KW@22..29 "const" [Newline("\n")] [Whitespace(" ")]
        2: JS_VARIABLE_DECLARATOR_LIST@29..36
          0: JS_VARIABLE_DECLARATOR@29..36
            0: JS_BOGUS_BINDING@29..33
              0: IDENT@29..33 "let" [] [Whitespace(" ")]
            1: (empty)
            2: JS_INITIALIZER_CLAUSE@33..36
              0: EQ@33..35 "=" [] [Whitespace(" ")]
              1: JS_NUMBER_LITERAL_EXPRESSION@35..36
                0: JS_NUMBER_LITERAL@35..36 "5" [] []
      1: SEMICOLON@36..37 ";" [] []
  4: EOF@37..38 "" [Newline("\n")] []
--
binding_identifier_invalid_script.js:2:5 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  × `let` cannot be declared as a variable name inside of a `let` declaration
  
    1 │ // SCRIPT
  > 2 │ let let = 5;
      │     ^^^
    3 │ const let = 5;
    4 │ 
  
  i Rename the let identifier here
  
--
binding_identifier_invalid_script.js:3:7 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  × `let` cannot be declared as a variable name inside of a `const` declaration
  
    1 │ // SCRIPT
    2 │ let let = 5;
  > 3 │ const let = 5;
      │       ^^^
    4 │ 
  
  i Rename the let identifier here
  
--
// SCRIPT
let let = 5;
const let = 5;