biome_js_parser 0.5.7

Biome's JavaScript parser
Documentation
JsModule {
    bom_token: missing (optional),
    interpreter_token: missing (optional),
    directives: JsDirectiveList [],
    items: JsModuleItemList [
        JsVariableStatement {
            declaration: JsVariableDeclaration {
                await_token: missing (optional),
                kind: VAR_KW@0..4 "var" [] [Whitespace(" ")],
                declarators: JsVariableDeclaratorList [
                    JsVariableDeclarator {
                        id: JsIdentifierBinding {
                            name_token: IDENT@4..6 "a" [] [Whitespace(" ")],
                        },
                        variable_annotation: missing (optional),
                        initializer: JsInitializerClause {
                            eq_token: EQ@6..7 "=" [] [],
                            expression: missing (required),
                        },
                    },
                ],
            },
            semicolon_token: SEMICOLON@7..8 ";" [] [],
        },
        JsVariableStatement {
            declaration: JsVariableDeclaration {
                await_token: missing (optional),
                kind: CONST_KW@8..15 "const" [Newline("\n")] [Whitespace(" ")],
                declarators: JsVariableDeclaratorList [
                    JsVariableDeclarator {
                        id: JsIdentifierBinding {
                            name_token: IDENT@15..17 "b" [] [Whitespace(" ")],
                        },
                        variable_annotation: missing (optional),
                        initializer: JsInitializerClause {
                            eq_token: EQ@17..19 "=" [] [Whitespace(" ")],
                            expression: JsNumberLiteralExpression {
                                value_token: JS_NUMBER_LITERAL@19..21 "5" [] [Whitespace(" ")],
                            },
                        },
                    },
                ],
            },
            semicolon_token: missing (optional),
        },
        JsVariableStatement {
            declaration: JsVariableDeclaration {
                await_token: missing (optional),
                kind: LET_KW@21..25 "let" [] [Whitespace(" ")],
                declarators: JsVariableDeclaratorList [
                    JsVariableDeclarator {
                        id: JsIdentifierBinding {
                            name_token: IDENT@25..27 "c" [] [Whitespace(" ")],
                        },
                        variable_annotation: missing (optional),
                        initializer: JsInitializerClause {
                            eq_token: EQ@27..29 "=" [] [Whitespace(" ")],
                            expression: JsNumberLiteralExpression {
                                value_token: JS_NUMBER_LITERAL@29..30 "5" [] [],
                            },
                        },
                    },
                ],
            },
            semicolon_token: SEMICOLON@30..31 ";" [] [],
        },
    ],
    eof_token: EOF@31..32 "" [Newline("\n")] [],
}

0: JS_MODULE@0..32
  0: (empty)
  1: (empty)
  2: JS_DIRECTIVE_LIST@0..0
  3: JS_MODULE_ITEM_LIST@0..31
    0: JS_VARIABLE_STATEMENT@0..8
      0: JS_VARIABLE_DECLARATION@0..7
        0: (empty)
        1: VAR_KW@0..4 "var" [] [Whitespace(" ")]
        2: JS_VARIABLE_DECLARATOR_LIST@4..7
          0: JS_VARIABLE_DECLARATOR@4..7
            0: JS_IDENTIFIER_BINDING@4..6
              0: IDENT@4..6 "a" [] [Whitespace(" ")]
            1: (empty)
            2: JS_INITIALIZER_CLAUSE@6..7
              0: EQ@6..7 "=" [] []
              1: (empty)
      1: SEMICOLON@7..8 ";" [] []
    1: JS_VARIABLE_STATEMENT@8..21
      0: JS_VARIABLE_DECLARATION@8..21
        0: (empty)
        1: CONST_KW@8..15 "const" [Newline("\n")] [Whitespace(" ")]
        2: JS_VARIABLE_DECLARATOR_LIST@15..21
          0: JS_VARIABLE_DECLARATOR@15..21
            0: JS_IDENTIFIER_BINDING@15..17
              0: IDENT@15..17 "b" [] [Whitespace(" ")]
            1: (empty)
            2: JS_INITIALIZER_CLAUSE@17..21
              0: EQ@17..19 "=" [] [Whitespace(" ")]
              1: JS_NUMBER_LITERAL_EXPRESSION@19..21
                0: JS_NUMBER_LITERAL@19..21 "5" [] [Whitespace(" ")]
      1: (empty)
    2: JS_VARIABLE_STATEMENT@21..31
      0: JS_VARIABLE_DECLARATION@21..30
        0: (empty)
        1: LET_KW@21..25 "let" [] [Whitespace(" ")]
        2: JS_VARIABLE_DECLARATOR_LIST@25..30
          0: JS_VARIABLE_DECLARATOR@25..30
            0: JS_IDENTIFIER_BINDING@25..27
              0: IDENT@25..27 "c" [] [Whitespace(" ")]
            1: (empty)
            2: JS_INITIALIZER_CLAUSE@27..30
              0: EQ@27..29 "=" [] [Whitespace(" ")]
              1: JS_NUMBER_LITERAL_EXPRESSION@29..30
                0: JS_NUMBER_LITERAL@29..30 "5" [] []
      1: SEMICOLON@30..31 ";" [] []
  4: EOF@31..32 "" [Newline("\n")] []
--
var_decl_err.js:1:8 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  × Expected an expression, or an assignment but instead found ';'.
  
  > 1 │ var a =;
      │        ^
    2 │ const b = 5 let c = 5;
    3 │ 
  
  i Expected an expression, or an assignment here.
  
  > 1 │ var a =;
      │        ^
    2 │ const b = 5 let c = 5;
    3 │ 
  
--
var_decl_err.js:2:13 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  × Expected a semicolon or an implicit semicolon after a statement, but found none
  
    1 │ var a =;
  > 2 │ const b = 5 let c = 5;
      │             ^^^
    3 │ 
  
  i An explicit or implicit semicolon is expected here...
  
    1 │ var a =;
  > 2 │ const b = 5 let c = 5;
      │             ^^^
    3 │ 
  
  i ...Which is required to end this statement
  
    1 │ var a =;
  > 2 │ const b = 5 let c = 5;
      │ ^^^^^^^^^^^^
    3 │ 
  
--
var a =;
const b = 5 let c = 5;