MODULE@0..114
  FN_DECL@0..13
    FUNCTION_KW@0..8 "function"
    PARAMETER_LIST@8..10
      L_PAREN@8..9 "("
      R_PAREN@9..10 ")"
    WHITESPACE@10..11 " "
    BLOCK_STMT@11..13
      L_CURLY@11..12 "{"
      R_CURLY@12..13 "}"
  WHITESPACE@13..14 "\n"
  FN_DECL@14..41
    FUNCTION_KW@14..22 "function"
    WHITESPACE@22..23 " "
    PARAMETER_LIST@23..38
      ERROR@23..24
        L_CURLY@23..24 "{"
      ERROR@24..25
        R_CURLY@24..25 "}"
      WHITESPACE@25..26 "\n"
      ERROR@26..34
        FUNCTION_KW@26..34 "function"
      WHITESPACE@34..35 " "
      ERROR@35..36
        STAR@35..36 "*"
      ERROR@36..37
        L_PAREN@36..37 "("
      R_PAREN@37..38 ")"
    WHITESPACE@38..39 " "
    BLOCK_STMT@39..41
      L_CURLY@39..40 "{"
      R_CURLY@40..41 "}"
  WHITESPACE@41..42 "\n"
  FN_DECL@42..61
    IDENT@42..47 "async"
    WHITESPACE@47..48 " "
    FUNCTION_KW@48..56 "function"
    PARAMETER_LIST@56..58
      L_PAREN@56..57 "("
      R_PAREN@57..58 ")"
    WHITESPACE@58..59 " "
    BLOCK_STMT@59..61
      L_CURLY@59..60 "{"
      R_CURLY@60..61 "}"
  WHITESPACE@61..62 "\n"
  FN_DECL@62..83
    IDENT@62..67 "async"
    WHITESPACE@67..68 " "
    FUNCTION_KW@68..76 "function"
    WHITESPACE@76..77 " "
    STAR@77..78 "*"
    PARAMETER_LIST@78..80
      L_PAREN@78..79 "("
      R_PAREN@79..80 ")"
    WHITESPACE@80..81 " "
    BLOCK_STMT@81..83
      L_CURLY@81..82 "{"
      R_CURLY@82..83 "}"
  WHITESPACE@83..84 "\n"
  FN_DECL@84..102
    FUNCTION_KW@84..92 "function"
    WHITESPACE@92..93 " "
    STAR@93..94 "*"
    NAME@94..97
      IDENT@94..97 "foo"
    PARAMETER_LIST@97..99
      L_PAREN@97..98 "("
      R_PAREN@98..99 ")"
    WHITESPACE@99..100 " "
    BLOCK_STMT@100..102
      L_CURLY@100..101 "{"
      R_CURLY@101..102 "}"
  WHITESPACE@102..103 "\n"
  EXPR_STMT@103..108
    NAME_REF@103..108
      IDENT@103..108 "yield"
  WHITESPACE@108..109 " "
  EXPR_STMT@109..113
    NAME_REF@109..112
      IDENT@109..112 "foo"
    SEMICOLON@112..113 ";"
  WHITESPACE@113..114 "\n"
--
error[SyntaxError]: expected `'('` but instead found `{`
  ┌─ function_decl_err.js:2:10
  │
2 │ function {}
  │          ^ unexpected

--
error[SyntaxError]: Expected an identifier or pattern, but found none
  ┌─ function_decl_err.js:2:10
  │
2 │ function {}
  │          ^

--
error[SyntaxError]: expected `,` but instead found `}`
  ┌─ function_decl_err.js:2:11
  │
2 │ function {}
  │           ^ unexpected

--
error[SyntaxError]: Expected an identifier or pattern, but found none
  ┌─ function_decl_err.js:2:11
  │
2 │ function {}
  │           ^

--
error[SyntaxError]: expected `,` but instead found `*`
  ┌─ function_decl_err.js:3:10
  │
3 │ function *() {}
  │          ^ unexpected

--
error[SyntaxError]: Expected an identifier or pattern, but found none
  ┌─ function_decl_err.js:3:10
  │
3 │ function *() {}
  │          ^

--
error[SyntaxError]: Expected a semicolon or an implicit semicolon after a statement, but found none
  ┌─ function_decl_err.js:7:7
  │
7 │ yield foo;
  │ ------^^^
  │ │     │
  │ │     An explicit or implicit semicolon is expected here...
  │ ...Which is required to end this statement

--
function() {}
function {}
function *() {}
async function() {}
async function *() {}
function *foo() {}
yield foo;