From 7530e9051d67d8721126e48c39f0a8ac27d980a5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Donny/=EA=B0=95=EB=8F=99=EC=9C=A4?= <kdy1997.dev@gmail.com>
Date: Wed, 25 Oct 2023 15:59:03 -0700
Subject: [PATCH] perf(es/minifier): Add `has_flag` to `Comments` (#8182)

---
 crates/swc_common/src/comments.rs             |  84 ++++++++++
 crates/swc_common/src/syntax_pos.rs           |   8 +-
 crates/swc_ecma_minifier/src/metadata/mod.rs  |  21 +--
 .../array/blockStmt/input.js.span.swc-stderr  | 119 ++++++++++++++
 .../call/simple/input.js.span.swc-stderr      | 102 ++++++++++++
 .../exprs/paren-annotations/1/input.js        |   2 +
 .../1/input.js.span.swc-stderr                |  88 +++++++++++
 .../paren-annotations/1/input.js.swc-stderr   |  10 ++
 .../comments/exprs/paren-pure/1/input.js      |   1 +
 .../paren-pure/1/input.js.span.swc-stderr     | 108 +++++++++++++
 .../exprs/paren-pure/1/input.js.swc-stderr    |   9 ++
 .../comments/exprs/paren-pure/2/input.js      |   2 +
 .../paren-pure/2/input.js.span.swc-stderr     | 147 ++++++++++++++++++
 .../exprs/paren-pure/2/input.js.swc-stderr    |  10 ++
 .../comments/exprs/paren-pure/3/input.js      |   1 +
 .../paren-pure/3/input.js.span.swc-stderr     | 138 ++++++++++++++++
 .../exprs/paren-pure/3/input.js.swc-stderr    |   9 ++
 .../issue-3715/input.js.span.swc-stderr       |  54 +++++++
 .../issue-4876/input.js.span.swc-stderr       | 128 +++++++++++++++
 .../stmts/block/input.js.span.swc-stderr      |  63 ++++++++
 .../stmts/switch/input.js.span.swc-stderr     | 129 +++++++++++++++
 crates/swc_ecma_parser/tests/span.rs          |   3 +-
 ...s.swc-stderr => binary.js.span.swc-stderr} |   0
 ...swc-stderr => accessor.js.span.swc-stderr} |   0
 ...swc-stderr => async-fn.js.span.swc-stderr} |   0
 ...> class-no-close-brace.js.span.swc-stderr} |   0
 ...js.swc-stderr => class.js.span.swc-stderr} |   0
 ...stderr => computed-key.js.span.swc-stderr} |   0
 ...-stderr => constructor.js.span.swc-stderr} |   0
 ...wc-stderr => decorator.js.span.swc-stderr} |   0
 ...derr => default-export.js.span.swc-stderr} |   0
 ...lt-import-string-names.js.span.swc-stderr} |   0
 ...-stderr => export-decl.js.span.swc-stderr} |   0
 ... export-string-names-1.js.span.swc-stderr} |   0
 ... export-string-names-2.js.span.swc-stderr} |   0
 ... export-string-names-3.js.span.swc-stderr} |   0
 ...s.swc-stderr => export.js.span.swc-stderr} |   0
 ...fn.js.swc-stderr => fn.js.span.swc-stderr} |   0
 ... import-string-names-1.js.span.swc-stderr} |   0
 ... import-string-names-2.js.span.swc-stderr} |   0
 ...stderr => named-export.js.span.swc-stderr} |   0
 ...ce-export-string-names.js.span.swc-stderr} |   0
 ...derr => private-method.js.span.swc-stderr} |   0
 ...stderr => private-prop.js.span.swc-stderr} |   0
 ...locks-with-line-breaks.js.span.swc-stderr} |   0
 ...tderr => static-blocks.js.span.swc-stderr} |   0
 ...js.swc-stderr => array.js.span.swc-stderr} |   0
 ....swc-stderr => arrow-2.js.span.swc-stderr} |   0
 ...rr => arrow-with-block.js.span.swc-stderr} |   0
 ...rr => arrow-with-paren.js.span.swc-stderr} |   0
 ...js.swc-stderr => arrow.js.span.swc-stderr} |   0
 ...js.swc-stderr => await.js.span.swc-stderr} |   0
 ....js.swc-stderr => cond.js.span.swc-stderr} |   0
 ...derr => dynamic-import.js.span.swc-stderr} |   0
 ...tderr => export-defaul.js.span.swc-stderr} |   0
 ...s.swc-stderr => member.js.span.swc-stderr} |   0
 ...w.js.swc-stderr => new.js.span.swc-stderr} |   0
 ....js.swc-stderr => null.js.span.swc-stderr} |   0
 ...s.swc-stderr => object.js.span.swc-stderr} |   0
 ...r => optional-chaining.js.span.swc-stderr} |   0
 ...js.swc-stderr => paren.js.span.swc-stderr} |   0
 ...js.swc-stderr => regex.js.span.swc-stderr} |   0
 ...q.js.swc-stderr => seq.js.span.swc-stderr} |   0
 ...derr => string-literal.js.span.swc-stderr} |   0
 ...c-stderr => tagged-tpl.js.span.swc-stderr} |   0
 ...l.js.swc-stderr => tpl.js.span.swc-stderr} |   0
 ...js.swc-stderr => unary.js.span.swc-stderr} |   0
 ...s.swc-stderr => update.js.span.swc-stderr} |   0
 ...js.swc-stderr => yield.js.span.swc-stderr} |   0
 ...derr => arrow_function.js.span.swc-stderr} |   0
 ...swc-stderr => function.js.span.swc-stderr} |   0
 ...js.swc-stderr => array.js.span.swc-stderr} |   0
 ...err => assign-pat-prop.js.span.swc-stderr} |   0
 ...c-stderr => assign-pat.js.span.swc-stderr} |   0
 ...js.swc-stderr => input.js.span.swc-stderr} |   0
 ...js.swc-stderr => input.js.span.swc-stderr} |   0
 ...js.swc-stderr => input.js.span.swc-stderr} |   0
 ...swc-stderr => debugger.js.span.swc-stderr} |   0
 ...swc-stderr => do-while.js.span.swc-stderr} |   0
 ...js.swc-stderr => empty.js.span.swc-stderr} |   0
 ...s.swc-stderr => for-in.js.span.swc-stderr} |   0
 ...s.swc-stderr => for-of.js.span.swc-stderr} |   0
 ...if.js.swc-stderr => if.js.span.swc-stderr} |   0
 ...js.swc-stderr => label.js.span.swc-stderr} |   0
 ...s.swc-stderr => return.js.span.swc-stderr} |   0
 ...s.swc-stderr => switch.js.span.swc-stderr} |   0
 ...js.swc-stderr => throw.js.span.swc-stderr} |   0
 ...r => try-catch-finally.js.span.swc-stderr} |   0
 ...wc-stderr => try-catch.js.span.swc-stderr} |   0
 ...-stderr => try-finally.js.span.swc-stderr} |   0
 ...js.swc-stderr => while.js.span.swc-stderr} |   0
 ....js.swc-stderr => with.js.span.swc-stderr} |   0
 ....js.swc-stderr => expr.js.span.swc-stderr} |   0
 ....js.swc-stderr => obj1.js.span.swc-stderr} |   0
 ....js.swc-stderr => obj2.js.span.swc-stderr} |   0
 ....js.swc-stderr => obj3.js.span.swc-stderr} |   0
 ....js.swc-stderr => obj4.js.span.swc-stderr} |   0
 ...err => decorated-class.ts.span.swc-stderr} |   0
 ...r => export-const-enum.ts.span.swc-stderr} |   0
 ...tderr => import-equals.ts.span.swc-stderr} |   0
 ...ts.swc-stderr => class.ts.span.swc-stderr} |   0
 ....ts.swc-stderr => enum.ts.span.swc-stderr} |   0
 ...swc-stderr => function.ts.span.swc-stderr} |   0
 ...s.swc-stderr => module.ts.span.swc-stderr} |   0
 ...r.ts.swc-stderr => var.ts.span.swc-stderr} |   0
 ...r => arrow-type-params.ts.span.swc-stderr} |   0
 ...ts.swc-stderr => arrow.ts.span.swc-stderr} |   0
 ...as.ts.swc-stderr => as.ts.span.swc-stderr} |   0
 ...err => const-assertion.ts.span.swc-stderr} |   0
 ...wc-stderr => type-args.ts.span.swc-stderr} |   0
 ...r => try-catch-unknown.ts.span.swc-stderr} |   0
 ...ts.swc-stderr => alias.ts.span.swc-stderr} |   0
 ...ts.swc-stderr => array.ts.span.swc-stderr} |   0
 ....ts.swc-stderr => cond.ts.span.swc-stderr} |   0
 ...rr => constructor-type.ts.span.swc-stderr} |   0
 ....ts.swc-stderr => enum.ts.span.swc-stderr} |   0
 ...fn.ts.swc-stderr => fn.ts.span.swc-stderr} |   0
 ...s.swc-stderr => import.ts.span.swc-stderr} |   0
 ...wc-stderr => interface.ts.span.swc-stderr} |   0
 ...stderr => intersection.ts.span.swc-stderr} |   0
 ...ts.swc-stderr => tuple.ts.span.swc-stderr} |   0
 ...swc-stderr => optional.ts.span.swc-stderr} |   0
 crates/swc_node_comments/src/lib.rs           |  25 +++
 123 files changed, 1239 insertions(+), 22 deletions(-)
 create mode 100644 crates/swc_ecma_parser/tests/comments/exprs/array/blockStmt/input.js.span.swc-stderr
 create mode 100644 crates/swc_ecma_parser/tests/comments/exprs/call/simple/input.js.span.swc-stderr
 create mode 100644 crates/swc_ecma_parser/tests/comments/exprs/paren-annotations/1/input.js
 create mode 100644 crates/swc_ecma_parser/tests/comments/exprs/paren-annotations/1/input.js.span.swc-stderr
 create mode 100644 crates/swc_ecma_parser/tests/comments/exprs/paren-annotations/1/input.js.swc-stderr
 create mode 100644 crates/swc_ecma_parser/tests/comments/exprs/paren-pure/1/input.js
 create mode 100644 crates/swc_ecma_parser/tests/comments/exprs/paren-pure/1/input.js.span.swc-stderr
 create mode 100644 crates/swc_ecma_parser/tests/comments/exprs/paren-pure/1/input.js.swc-stderr
 create mode 100644 crates/swc_ecma_parser/tests/comments/exprs/paren-pure/2/input.js
 create mode 100644 crates/swc_ecma_parser/tests/comments/exprs/paren-pure/2/input.js.span.swc-stderr
 create mode 100644 crates/swc_ecma_parser/tests/comments/exprs/paren-pure/2/input.js.swc-stderr
 create mode 100644 crates/swc_ecma_parser/tests/comments/exprs/paren-pure/3/input.js
 create mode 100644 crates/swc_ecma_parser/tests/comments/exprs/paren-pure/3/input.js.span.swc-stderr
 create mode 100644 crates/swc_ecma_parser/tests/comments/exprs/paren-pure/3/input.js.swc-stderr
 create mode 100644 crates/swc_ecma_parser/tests/comments/issue-3715/input.js.span.swc-stderr
 create mode 100644 crates/swc_ecma_parser/tests/comments/issue-4876/input.js.span.swc-stderr
 create mode 100644 crates/swc_ecma_parser/tests/comments/stmts/block/input.js.span.swc-stderr
 create mode 100644 crates/swc_ecma_parser/tests/comments/stmts/switch/input.js.span.swc-stderr
 rename crates/swc_ecma_parser/tests/span/js/{binary.js.swc-stderr => binary.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/decl/{accessor.js.swc-stderr => accessor.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/decl/{async-fn.js.swc-stderr => async-fn.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/decl/{class-no-close-brace.js.swc-stderr => class-no-close-brace.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/decl/{class.js.swc-stderr => class.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/decl/{computed-key.js.swc-stderr => computed-key.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/decl/{constructor.js.swc-stderr => constructor.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/decl/{decorator.js.swc-stderr => decorator.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/decl/{default-export.js.swc-stderr => default-export.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/decl/{default-import-string-names.js.swc-stderr => default-import-string-names.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/decl/{export-decl.js.swc-stderr => export-decl.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/decl/{export-string-names-1.js.swc-stderr => export-string-names-1.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/decl/{export-string-names-2.js.swc-stderr => export-string-names-2.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/decl/{export-string-names-3.js.swc-stderr => export-string-names-3.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/decl/{export.js.swc-stderr => export.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/decl/{fn.js.swc-stderr => fn.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/decl/{import-string-names-1.js.swc-stderr => import-string-names-1.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/decl/{import-string-names-2.js.swc-stderr => import-string-names-2.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/decl/{named-export.js.swc-stderr => named-export.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/decl/{namespace-export-string-names.js.swc-stderr => namespace-export-string-names.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/decl/{private-method.js.swc-stderr => private-method.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/decl/{private-prop.js.swc-stderr => private-prop.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/decl/{static-blocks-with-line-breaks.js.swc-stderr => static-blocks-with-line-breaks.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/decl/{static-blocks.js.swc-stderr => static-blocks.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/expr/{array.js.swc-stderr => array.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/expr/{arrow-2.js.swc-stderr => arrow-2.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/expr/{arrow-with-block.js.swc-stderr => arrow-with-block.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/expr/{arrow-with-paren.js.swc-stderr => arrow-with-paren.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/expr/{arrow.js.swc-stderr => arrow.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/expr/{await.js.swc-stderr => await.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/expr/{cond.js.swc-stderr => cond.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/expr/{dynamic-import.js.swc-stderr => dynamic-import.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/expr/{export-defaul.js.swc-stderr => export-defaul.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/expr/{member.js.swc-stderr => member.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/expr/{new.js.swc-stderr => new.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/expr/{null.js.swc-stderr => null.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/expr/{object.js.swc-stderr => object.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/expr/{optional-chaining.js.swc-stderr => optional-chaining.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/expr/{paren.js.swc-stderr => paren.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/expr/{regex.js.swc-stderr => regex.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/expr/{seq.js.swc-stderr => seq.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/expr/{string-literal.js.swc-stderr => string-literal.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/expr/{tagged-tpl.js.swc-stderr => tagged-tpl.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/expr/{tpl.js.swc-stderr => tpl.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/expr/{unary.js.swc-stderr => unary.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/expr/{update.js.swc-stderr => update.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/expr/{yield.js.swc-stderr => yield.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/issue-3236/{arrow_function.js.swc-stderr => arrow_function.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/issue-3236/{function.js.swc-stderr => function.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/pat/{array.js.swc-stderr => array.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/pat/{assign-pat-prop.js.swc-stderr => assign-pat-prop.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/pat/{assign-pat.js.swc-stderr => assign-pat.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/srcmap/1/{input.js.swc-stderr => input.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/srcmap/2/{input.js.swc-stderr => input.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/srcmap/3/{input.js.swc-stderr => input.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/stmt/{debugger.js.swc-stderr => debugger.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/stmt/{do-while.js.swc-stderr => do-while.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/stmt/{empty.js.swc-stderr => empty.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/stmt/{for-in.js.swc-stderr => for-in.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/stmt/{for-of.js.swc-stderr => for-of.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/stmt/{if.js.swc-stderr => if.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/stmt/{label.js.swc-stderr => label.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/stmt/{return.js.swc-stderr => return.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/stmt/{switch.js.swc-stderr => switch.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/stmt/{throw.js.swc-stderr => throw.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/stmt/{try-catch-finally.js.swc-stderr => try-catch-finally.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/stmt/{try-catch.js.swc-stderr => try-catch.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/stmt/{try-finally.js.swc-stderr => try-finally.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/stmt/{while.js.swc-stderr => while.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/stmt/{with.js.swc-stderr => with.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/super/{expr.js.swc-stderr => expr.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/super/{obj1.js.swc-stderr => obj1.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/super/{obj2.js.swc-stderr => obj2.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/super/{obj3.js.swc-stderr => obj3.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/js/super/{obj4.js.swc-stderr => obj4.js.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/ts/decl/{decorated-class.ts.swc-stderr => decorated-class.ts.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/ts/decl/{export-const-enum.ts.swc-stderr => export-const-enum.ts.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/ts/decl/{import-equals.ts.swc-stderr => import-equals.ts.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/ts/declare/{class.ts.swc-stderr => class.ts.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/ts/declare/{enum.ts.swc-stderr => enum.ts.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/ts/declare/{function.ts.swc-stderr => function.ts.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/ts/declare/{module.ts.swc-stderr => module.ts.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/ts/declare/{var.ts.swc-stderr => var.ts.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/ts/expr/{arrow-type-params.ts.swc-stderr => arrow-type-params.ts.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/ts/expr/{arrow.ts.swc-stderr => arrow.ts.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/ts/expr/{as.ts.swc-stderr => as.ts.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/ts/expr/{const-assertion.ts.swc-stderr => const-assertion.ts.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/ts/expr/{type-args.ts.swc-stderr => type-args.ts.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/ts/stmt/{try-catch-unknown.ts.swc-stderr => try-catch-unknown.ts.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/ts/type/{alias.ts.swc-stderr => alias.ts.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/ts/type/{array.ts.swc-stderr => array.ts.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/ts/type/{cond.ts.swc-stderr => cond.ts.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/ts/type/{constructor-type.ts.swc-stderr => constructor-type.ts.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/ts/type/{enum.ts.swc-stderr => enum.ts.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/ts/type/{fn.ts.swc-stderr => fn.ts.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/ts/type/{import.ts.swc-stderr => import.ts.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/ts/type/{interface.ts.swc-stderr => interface.ts.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/ts/type/{intersection.ts.swc-stderr => intersection.ts.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/ts/type/{tuple.ts.swc-stderr => tuple.ts.span.swc-stderr} (100%)
 rename crates/swc_ecma_parser/tests/span/ts/type/tuple/{optional.ts.swc-stderr => optional.ts.span.swc-stderr} (100%)

diff --git a/crates/swc_common/src/comments.rs b/crates/swc_common/src/comments.rs
index 3482d9cf234..ac70c0be819 100644
--- a/crates/swc_common/src/comments.rs
+++ b/crates/swc_common/src/comments.rs
@@ -84,6 +84,47 @@ pub trait Comments {
 
         ret
     }
+
+    /// This method is used to check if a comment with the given flag exist.
+    ///
+    /// If `flag` is `PURE`, this method will look for `@__PURE__` and
+    /// `#__PURE__`.
+    fn has_flag(&self, lo: BytePos, flag: &str) -> bool {
+        let cmts = self.take_leading(lo);
+
+        let ret = if let Some(comments) = &cmts {
+            (|| {
+                for c in comments {
+                    if c.kind == CommentKind::Block {
+                        for line in c.text.lines() {
+                            // jsdoc
+                            let line = line.trim_start_matches(['*', ' ']);
+                            let line = line.trim();
+
+                            //
+                            if line.len() == (flag.len() + 5)
+                                && (line.starts_with("#__") || line.starts_with("@__"))
+                                && line.ends_with("__")
+                                && flag == &line[3..line.len() - 2]
+                            {
+                                return true;
+                            }
+                        }
+                    }
+                }
+
+                false
+            })()
+        } else {
+            false
+        };
+
+        if let Some(cmts) = cmts {
+            self.add_trailing_comments(lo, cmts);
+        }
+
+        ret
+    }
 }
 
 macro_rules! delegate {
@@ -139,6 +180,10 @@ macro_rules! delegate {
         fn add_pure_comment(&self, pos: BytePos) {
             (**self).add_pure_comment(pos)
         }
+
+        fn has_flag(&self, lo: BytePos, flag: &str) -> bool {
+            (**self).has_flag(lo, flag)
+        }
     };
 }
 
@@ -225,6 +270,11 @@ impl Comments for NoopComments {
 
     #[cfg_attr(not(debug_assertions), inline(always))]
     fn add_pure_comment(&self, _: BytePos) {}
+
+    #[inline]
+    fn has_flag(&self, _: BytePos, _: &str) -> bool {
+        false
+    }
 }
 
 /// This implementation behaves like [NoopComments] if it's [None].
@@ -347,6 +397,15 @@ where
             f(&[])
         }
     }
+
+    #[inline]
+    fn has_flag(&self, lo: BytePos, flag: &str) -> bool {
+        if let Some(c) = self {
+            c.has_flag(lo, flag)
+        } else {
+            false
+        }
+    }
 }
 
 pub type SingleThreadedCommentsMapInner = FxHashMap<BytePos, Vec<Comment>>;
@@ -485,6 +544,31 @@ impl Comments for SingleThreadedComments {
             f(&[])
         }
     }
+
+    fn has_flag(&self, lo: BytePos, flag: &str) -> bool {
+        self.with_leading(lo, |comments| {
+            for c in comments {
+                if c.kind == CommentKind::Block {
+                    for line in c.text.lines() {
+                        // jsdoc
+                        let line = line.trim_start_matches(['*', ' ']);
+                        let line = line.trim();
+
+                        //
+                        if line.len() == (flag.len() + 5)
+                            && (line.starts_with("#__") || line.starts_with("@__"))
+                            && line.ends_with("__")
+                            && flag == &line[3..line.len() - 2]
+                        {
+                            return true;
+                        }
+                    }
+                }
+            }
+
+            false
+        })
+    }
 }
 
 impl SingleThreadedComments {
diff --git a/crates/swc_common/src/syntax_pos.rs b/crates/swc_common/src/syntax_pos.rs
index a90dbce0736..f32e84b2be9 100644
--- a/crates/swc_common/src/syntax_pos.rs
+++ b/crates/swc_common/src/syntax_pos.rs
@@ -1139,11 +1139,17 @@ impl BytePos {
         self.0 >= Self::MIN_RESERVED.0 && self.0 != u32::MAX
     }
 
-    /// Returns true if this is synthesized and has no relevant input source
+    /// Returns `true`` if this is synthesized and has no relevant input source
     /// code.
     pub const fn is_dummy(self) -> bool {
         self.0 == 0
     }
+
+    /// Returns `true`` if this is explicitly synthesized or has relevant input
+    /// source so can have a comment.
+    pub const fn can_have_comment(self) -> bool {
+        self.0 != 0
+    }
 }
 
 /// A character offset. Because of multibyte utf8 characters, a byte offset
diff --git a/crates/swc_ecma_minifier/src/metadata/mod.rs b/crates/swc_ecma_minifier/src/metadata/mod.rs
index 5e3d6dfe225..ee353458e37 100644
--- a/crates/swc_ecma_minifier/src/metadata/mod.rs
+++ b/crates/swc_ecma_minifier/src/metadata/mod.rs
@@ -311,24 +311,5 @@ fn has_flag(comments: Option<&dyn Comments>, span: Span, text: &'static str) ->
         return false;
     }
 
-    find_comment(comments, span, |c| {
-        if c.kind == CommentKind::Block {
-            for line in c.text.lines() {
-                // jsdoc
-                let line = line.trim_start_matches(['*', ' ']);
-                let line = line.trim();
-
-                //
-                if line.len() == (text.len() + 5)
-                    && (line.starts_with("#__") || line.starts_with("@__"))
-                    && line.ends_with("__")
-                    && text == &line[3..line.len() - 2]
-                {
-                    return true;
-                }
-            }
-        }
-
-        false
-    })
+    comments.has_flag(span.lo, text)
 }
diff --git a/crates/swc_ecma_parser/tests/comments/exprs/array/blockStmt/input.js.span.swc-stderr b/crates/swc_ecma_parser/tests/comments/exprs/array/blockStmt/input.js.span.swc-stderr
new file mode 100644
index 00000000000..eb5c9c266c5
--- /dev/null
+++ b/crates/swc_ecma_parser/tests/comments/exprs/array/blockStmt/input.js.span.swc-stderr
@@ -0,0 +1,119 @@
+
+  x Module
+   ,-[$DIR/tests/comments/exprs/array/blockStmt/input.js:1:1]
+ 1 | ,-> React.useEffect(() => {
+ 2 | |       // @refresh reset
+ 3 | `-> });
+   `----
+
+  x ModuleItem
+   ,-[$DIR/tests/comments/exprs/array/blockStmt/input.js:1:1]
+ 1 | ,-> React.useEffect(() => {
+ 2 | |       // @refresh reset
+ 3 | `-> });
+   `----
+
+  x Stmt
+   ,-[$DIR/tests/comments/exprs/array/blockStmt/input.js:1:1]
+ 1 | ,-> React.useEffect(() => {
+ 2 | |       // @refresh reset
+ 3 | `-> });
+   `----
+
+  x ExprStmt
+   ,-[$DIR/tests/comments/exprs/array/blockStmt/input.js:1:1]
+ 1 | ,-> React.useEffect(() => {
+ 2 | |       // @refresh reset
+ 3 | `-> });
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/exprs/array/blockStmt/input.js:1:1]
+ 1 | ,-> React.useEffect(() => {
+ 2 | |       // @refresh reset
+ 3 | `-> });
+   `----
+
+  x CallExpr
+   ,-[$DIR/tests/comments/exprs/array/blockStmt/input.js:1:1]
+ 1 | ,-> React.useEffect(() => {
+ 2 | |       // @refresh reset
+ 3 | `-> });
+   `----
+
+  x Callee
+   ,-[$DIR/tests/comments/exprs/array/blockStmt/input.js:1:1]
+ 1 | React.useEffect(() => {
+   : ^^^^^^^^^^^^^^^
+ 2 |     // @refresh reset
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/exprs/array/blockStmt/input.js:1:1]
+ 1 | React.useEffect(() => {
+   : ^^^^^^^^^^^^^^^
+ 2 |     // @refresh reset
+   `----
+
+  x MemberExpr
+   ,-[$DIR/tests/comments/exprs/array/blockStmt/input.js:1:1]
+ 1 | React.useEffect(() => {
+   : ^^^^^^^^^^^^^^^
+ 2 |     // @refresh reset
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/exprs/array/blockStmt/input.js:1:1]
+ 1 | React.useEffect(() => {
+   : ^^^^^
+ 2 |     // @refresh reset
+   `----
+
+  x Ident
+   ,-[$DIR/tests/comments/exprs/array/blockStmt/input.js:1:1]
+ 1 | React.useEffect(() => {
+   : ^^^^^
+ 2 |     // @refresh reset
+   `----
+
+  x Ident
+   ,-[$DIR/tests/comments/exprs/array/blockStmt/input.js:1:1]
+ 1 | React.useEffect(() => {
+   :       ^^^^^^^^^
+ 2 |     // @refresh reset
+   `----
+
+  x ExprOrSpread
+   ,-[$DIR/tests/comments/exprs/array/blockStmt/input.js:1:1]
+ 1 | ,-> React.useEffect(() => {
+ 2 | |       // @refresh reset
+ 3 | `-> });
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/exprs/array/blockStmt/input.js:1:1]
+ 1 | ,-> React.useEffect(() => {
+ 2 | |       // @refresh reset
+ 3 | `-> });
+   `----
+
+  x ArrowExpr
+   ,-[$DIR/tests/comments/exprs/array/blockStmt/input.js:1:1]
+ 1 | ,-> React.useEffect(() => {
+ 2 | |       // @refresh reset
+ 3 | `-> });
+   `----
+
+  x BlockStmtOrExpr
+   ,-[$DIR/tests/comments/exprs/array/blockStmt/input.js:1:1]
+ 1 | ,-> React.useEffect(() => {
+ 2 | |       // @refresh reset
+ 3 | `-> });
+   `----
+
+  x BlockStmt
+   ,-[$DIR/tests/comments/exprs/array/blockStmt/input.js:1:1]
+ 1 | ,-> React.useEffect(() => {
+ 2 | |       // @refresh reset
+ 3 | `-> });
+   `----
diff --git a/crates/swc_ecma_parser/tests/comments/exprs/call/simple/input.js.span.swc-stderr b/crates/swc_ecma_parser/tests/comments/exprs/call/simple/input.js.span.swc-stderr
new file mode 100644
index 00000000000..c5a46645674
--- /dev/null
+++ b/crates/swc_ecma_parser/tests/comments/exprs/call/simple/input.js.span.swc-stderr
@@ -0,0 +1,102 @@
+
+  x Module
+   ,-[$DIR/tests/comments/exprs/call/simple/input.js:1:1]
+ 1 | test(123/*post: 9*/, 456/*post: 10*/);
+   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x ModuleItem
+   ,-[$DIR/tests/comments/exprs/call/simple/input.js:1:1]
+ 1 | test(123/*post: 9*/, 456/*post: 10*/);
+   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x Stmt
+   ,-[$DIR/tests/comments/exprs/call/simple/input.js:1:1]
+ 1 | test(123/*post: 9*/, 456/*post: 10*/);
+   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x ExprStmt
+   ,-[$DIR/tests/comments/exprs/call/simple/input.js:1:1]
+ 1 | test(123/*post: 9*/, 456/*post: 10*/);
+   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/exprs/call/simple/input.js:1:1]
+ 1 | test(123/*post: 9*/, 456/*post: 10*/);
+   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x CallExpr
+   ,-[$DIR/tests/comments/exprs/call/simple/input.js:1:1]
+ 1 | test(123/*post: 9*/, 456/*post: 10*/);
+   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x Callee
+   ,-[$DIR/tests/comments/exprs/call/simple/input.js:1:1]
+ 1 | test(123/*post: 9*/, 456/*post: 10*/);
+   : ^^^^
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/exprs/call/simple/input.js:1:1]
+ 1 | test(123/*post: 9*/, 456/*post: 10*/);
+   : ^^^^
+   `----
+
+  x Ident
+   ,-[$DIR/tests/comments/exprs/call/simple/input.js:1:1]
+ 1 | test(123/*post: 9*/, 456/*post: 10*/);
+   : ^^^^
+   `----
+
+  x ExprOrSpread
+   ,-[$DIR/tests/comments/exprs/call/simple/input.js:1:1]
+ 1 | test(123/*post: 9*/, 456/*post: 10*/);
+   :      ^^^
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/exprs/call/simple/input.js:1:1]
+ 1 | test(123/*post: 9*/, 456/*post: 10*/);
+   :      ^^^
+   `----
+
+  x Lit
+   ,-[$DIR/tests/comments/exprs/call/simple/input.js:1:1]
+ 1 | test(123/*post: 9*/, 456/*post: 10*/);
+   :      ^^^
+   `----
+
+  x Number
+   ,-[$DIR/tests/comments/exprs/call/simple/input.js:1:1]
+ 1 | test(123/*post: 9*/, 456/*post: 10*/);
+   :      ^^^
+   `----
+
+  x ExprOrSpread
+   ,-[$DIR/tests/comments/exprs/call/simple/input.js:1:1]
+ 1 | test(123/*post: 9*/, 456/*post: 10*/);
+   :                      ^^^
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/exprs/call/simple/input.js:1:1]
+ 1 | test(123/*post: 9*/, 456/*post: 10*/);
+   :                      ^^^
+   `----
+
+  x Lit
+   ,-[$DIR/tests/comments/exprs/call/simple/input.js:1:1]
+ 1 | test(123/*post: 9*/, 456/*post: 10*/);
+   :                      ^^^
+   `----
+
+  x Number
+   ,-[$DIR/tests/comments/exprs/call/simple/input.js:1:1]
+ 1 | test(123/*post: 9*/, 456/*post: 10*/);
+   :                      ^^^
+   `----
diff --git a/crates/swc_ecma_parser/tests/comments/exprs/paren-annotations/1/input.js b/crates/swc_ecma_parser/tests/comments/exprs/paren-annotations/1/input.js
new file mode 100644
index 00000000000..758e72404b6
--- /dev/null
+++ b/crates/swc_ecma_parser/tests/comments/exprs/paren-annotations/1/input.js
@@ -0,0 +1,2 @@
+const fnB = /*#__NO_SIDE_EFFECTS__*/ (args) => {
+}
\ No newline at end of file
diff --git a/crates/swc_ecma_parser/tests/comments/exprs/paren-annotations/1/input.js.span.swc-stderr b/crates/swc_ecma_parser/tests/comments/exprs/paren-annotations/1/input.js.span.swc-stderr
new file mode 100644
index 00000000000..909a530c935
--- /dev/null
+++ b/crates/swc_ecma_parser/tests/comments/exprs/paren-annotations/1/input.js.span.swc-stderr
@@ -0,0 +1,88 @@
+
+  x Module
+   ,-[$DIR/tests/comments/exprs/paren-annotations/1/input.js:1:1]
+ 1 | ,-> const fnB = /*#__NO_SIDE_EFFECTS__*/ (args) => {
+ 2 | `-> }
+   `----
+
+  x ModuleItem
+   ,-[$DIR/tests/comments/exprs/paren-annotations/1/input.js:1:1]
+ 1 | ,-> const fnB = /*#__NO_SIDE_EFFECTS__*/ (args) => {
+ 2 | `-> }
+   `----
+
+  x Stmt
+   ,-[$DIR/tests/comments/exprs/paren-annotations/1/input.js:1:1]
+ 1 | ,-> const fnB = /*#__NO_SIDE_EFFECTS__*/ (args) => {
+ 2 | `-> }
+   `----
+
+  x Decl
+   ,-[$DIR/tests/comments/exprs/paren-annotations/1/input.js:1:1]
+ 1 | ,-> const fnB = /*#__NO_SIDE_EFFECTS__*/ (args) => {
+ 2 | `-> }
+   `----
+
+  x VarDecl
+   ,-[$DIR/tests/comments/exprs/paren-annotations/1/input.js:1:1]
+ 1 | ,-> const fnB = /*#__NO_SIDE_EFFECTS__*/ (args) => {
+ 2 | `-> }
+   `----
+
+  x VarDeclarator
+   ,-[$DIR/tests/comments/exprs/paren-annotations/1/input.js:1:1]
+ 1 | ,-> const fnB = /*#__NO_SIDE_EFFECTS__*/ (args) => {
+ 2 | `-> }
+   `----
+
+  x Pat
+   ,-[$DIR/tests/comments/exprs/paren-annotations/1/input.js:1:1]
+ 1 | const fnB = /*#__NO_SIDE_EFFECTS__*/ (args) => {
+   :       ^^^
+ 2 | }
+   `----
+
+  x Ident
+   ,-[$DIR/tests/comments/exprs/paren-annotations/1/input.js:1:1]
+ 1 | const fnB = /*#__NO_SIDE_EFFECTS__*/ (args) => {
+   :       ^^^
+ 2 | }
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/exprs/paren-annotations/1/input.js:1:1]
+ 1 | ,-> const fnB = /*#__NO_SIDE_EFFECTS__*/ (args) => {
+ 2 | `-> }
+   `----
+
+  x ArrowExpr
+   ,-[$DIR/tests/comments/exprs/paren-annotations/1/input.js:1:1]
+ 1 | ,-> const fnB = /*#__NO_SIDE_EFFECTS__*/ (args) => {
+ 2 | `-> }
+   `----
+
+  x Pat
+   ,-[$DIR/tests/comments/exprs/paren-annotations/1/input.js:1:1]
+ 1 | const fnB = /*#__NO_SIDE_EFFECTS__*/ (args) => {
+   :                                       ^^^^
+ 2 | }
+   `----
+
+  x Ident
+   ,-[$DIR/tests/comments/exprs/paren-annotations/1/input.js:1:1]
+ 1 | const fnB = /*#__NO_SIDE_EFFECTS__*/ (args) => {
+   :                                       ^^^^
+ 2 | }
+   `----
+
+  x BlockStmtOrExpr
+   ,-[$DIR/tests/comments/exprs/paren-annotations/1/input.js:1:1]
+ 1 | ,-> const fnB = /*#__NO_SIDE_EFFECTS__*/ (args) => {
+ 2 | `-> }
+   `----
+
+  x BlockStmt
+   ,-[$DIR/tests/comments/exprs/paren-annotations/1/input.js:1:1]
+ 1 | ,-> const fnB = /*#__NO_SIDE_EFFECTS__*/ (args) => {
+ 2 | `-> }
+   `----
diff --git a/crates/swc_ecma_parser/tests/comments/exprs/paren-annotations/1/input.js.swc-stderr b/crates/swc_ecma_parser/tests/comments/exprs/paren-annotations/1/input.js.swc-stderr
new file mode 100644
index 00000000000..fa38cbc4b99
--- /dev/null
+++ b/crates/swc_ecma_parser/tests/comments/exprs/paren-annotations/1/input.js.swc-stderr
@@ -0,0 +1,10 @@
+
+  > Leading (lo)
+
+Error: 
+  > #__NO_SIDE_EFFECTS__
+   ,-[$DIR/tests/comments/exprs/paren-annotations/1/input.js:1:1]
+ 1 | const fnB = /*#__NO_SIDE_EFFECTS__*/ (args) => {
+   :                                      ^
+ 2 | }
+   `----
diff --git a/crates/swc_ecma_parser/tests/comments/exprs/paren-pure/1/input.js b/crates/swc_ecma_parser/tests/comments/exprs/paren-pure/1/input.js
new file mode 100644
index 00000000000..c4eb397403c
--- /dev/null
+++ b/crates/swc_ecma_parser/tests/comments/exprs/paren-pure/1/input.js
@@ -0,0 +1 @@
+/*#__PURE__*/ (console.log('simple'))
diff --git a/crates/swc_ecma_parser/tests/comments/exprs/paren-pure/1/input.js.span.swc-stderr b/crates/swc_ecma_parser/tests/comments/exprs/paren-pure/1/input.js.span.swc-stderr
new file mode 100644
index 00000000000..71044d2def0
--- /dev/null
+++ b/crates/swc_ecma_parser/tests/comments/exprs/paren-pure/1/input.js.span.swc-stderr
@@ -0,0 +1,108 @@
+
+  x Module
+   ,-[$DIR/tests/comments/exprs/paren-pure/1/input.js:1:1]
+ 1 | /*#__PURE__*/ (console.log('simple'))
+   :               ^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x ModuleItem
+   ,-[$DIR/tests/comments/exprs/paren-pure/1/input.js:1:1]
+ 1 | /*#__PURE__*/ (console.log('simple'))
+   :               ^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x Stmt
+   ,-[$DIR/tests/comments/exprs/paren-pure/1/input.js:1:1]
+ 1 | /*#__PURE__*/ (console.log('simple'))
+   :               ^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x ExprStmt
+   ,-[$DIR/tests/comments/exprs/paren-pure/1/input.js:1:1]
+ 1 | /*#__PURE__*/ (console.log('simple'))
+   :               ^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/exprs/paren-pure/1/input.js:1:1]
+ 1 | /*#__PURE__*/ (console.log('simple'))
+   :               ^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x ParenExpr
+   ,-[$DIR/tests/comments/exprs/paren-pure/1/input.js:1:1]
+ 1 | /*#__PURE__*/ (console.log('simple'))
+   :               ^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/exprs/paren-pure/1/input.js:1:1]
+ 1 | /*#__PURE__*/ (console.log('simple'))
+   :                ^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x CallExpr
+   ,-[$DIR/tests/comments/exprs/paren-pure/1/input.js:1:1]
+ 1 | /*#__PURE__*/ (console.log('simple'))
+   :                ^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x Callee
+   ,-[$DIR/tests/comments/exprs/paren-pure/1/input.js:1:1]
+ 1 | /*#__PURE__*/ (console.log('simple'))
+   :                ^^^^^^^^^^^
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/exprs/paren-pure/1/input.js:1:1]
+ 1 | /*#__PURE__*/ (console.log('simple'))
+   :                ^^^^^^^^^^^
+   `----
+
+  x MemberExpr
+   ,-[$DIR/tests/comments/exprs/paren-pure/1/input.js:1:1]
+ 1 | /*#__PURE__*/ (console.log('simple'))
+   :                ^^^^^^^^^^^
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/exprs/paren-pure/1/input.js:1:1]
+ 1 | /*#__PURE__*/ (console.log('simple'))
+   :                ^^^^^^^
+   `----
+
+  x Ident
+   ,-[$DIR/tests/comments/exprs/paren-pure/1/input.js:1:1]
+ 1 | /*#__PURE__*/ (console.log('simple'))
+   :                ^^^^^^^
+   `----
+
+  x Ident
+   ,-[$DIR/tests/comments/exprs/paren-pure/1/input.js:1:1]
+ 1 | /*#__PURE__*/ (console.log('simple'))
+   :                        ^^^
+   `----
+
+  x ExprOrSpread
+   ,-[$DIR/tests/comments/exprs/paren-pure/1/input.js:1:1]
+ 1 | /*#__PURE__*/ (console.log('simple'))
+   :                            ^^^^^^^^
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/exprs/paren-pure/1/input.js:1:1]
+ 1 | /*#__PURE__*/ (console.log('simple'))
+   :                            ^^^^^^^^
+   `----
+
+  x Lit
+   ,-[$DIR/tests/comments/exprs/paren-pure/1/input.js:1:1]
+ 1 | /*#__PURE__*/ (console.log('simple'))
+   :                            ^^^^^^^^
+   `----
+
+  x Str
+   ,-[$DIR/tests/comments/exprs/paren-pure/1/input.js:1:1]
+ 1 | /*#__PURE__*/ (console.log('simple'))
+   :                            ^^^^^^^^
+   `----
diff --git a/crates/swc_ecma_parser/tests/comments/exprs/paren-pure/1/input.js.swc-stderr b/crates/swc_ecma_parser/tests/comments/exprs/paren-pure/1/input.js.swc-stderr
new file mode 100644
index 00000000000..b7a43b6ec58
--- /dev/null
+++ b/crates/swc_ecma_parser/tests/comments/exprs/paren-pure/1/input.js.swc-stderr
@@ -0,0 +1,9 @@
+
+  > Leading (lo)
+
+Error: 
+  > #__PURE__
+   ,-[$DIR/tests/comments/exprs/paren-pure/1/input.js:1:1]
+ 1 | /*#__PURE__*/ (console.log('simple'))
+   :               ^
+   `----
diff --git a/crates/swc_ecma_parser/tests/comments/exprs/paren-pure/2/input.js b/crates/swc_ecma_parser/tests/comments/exprs/paren-pure/2/input.js
new file mode 100644
index 00000000000..dfd5768a918
--- /dev/null
+++ b/crates/swc_ecma_parser/tests/comments/exprs/paren-pure/2/input.js
@@ -0,0 +1,2 @@
+
+/*#__PURE__*/((() => import('./any'))())
diff --git a/crates/swc_ecma_parser/tests/comments/exprs/paren-pure/2/input.js.span.swc-stderr b/crates/swc_ecma_parser/tests/comments/exprs/paren-pure/2/input.js.span.swc-stderr
new file mode 100644
index 00000000000..0c3da07ebc4
--- /dev/null
+++ b/crates/swc_ecma_parser/tests/comments/exprs/paren-pure/2/input.js.span.swc-stderr
@@ -0,0 +1,147 @@
+
+  x Module
+   ,-[$DIR/tests/comments/exprs/paren-pure/2/input.js:1:1]
+ 1 | 
+ 2 | /*#__PURE__*/((() => import('./any'))())
+   :              ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x ModuleItem
+   ,-[$DIR/tests/comments/exprs/paren-pure/2/input.js:1:1]
+ 1 | 
+ 2 | /*#__PURE__*/((() => import('./any'))())
+   :              ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x Stmt
+   ,-[$DIR/tests/comments/exprs/paren-pure/2/input.js:1:1]
+ 1 | 
+ 2 | /*#__PURE__*/((() => import('./any'))())
+   :              ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x ExprStmt
+   ,-[$DIR/tests/comments/exprs/paren-pure/2/input.js:1:1]
+ 1 | 
+ 2 | /*#__PURE__*/((() => import('./any'))())
+   :              ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/exprs/paren-pure/2/input.js:1:1]
+ 1 | 
+ 2 | /*#__PURE__*/((() => import('./any'))())
+   :              ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x ParenExpr
+   ,-[$DIR/tests/comments/exprs/paren-pure/2/input.js:1:1]
+ 1 | 
+ 2 | /*#__PURE__*/((() => import('./any'))())
+   :              ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/exprs/paren-pure/2/input.js:1:1]
+ 1 | 
+ 2 | /*#__PURE__*/((() => import('./any'))())
+   :               ^^^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x CallExpr
+   ,-[$DIR/tests/comments/exprs/paren-pure/2/input.js:1:1]
+ 1 | 
+ 2 | /*#__PURE__*/((() => import('./any'))())
+   :               ^^^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x Callee
+   ,-[$DIR/tests/comments/exprs/paren-pure/2/input.js:1:1]
+ 1 | 
+ 2 | /*#__PURE__*/((() => import('./any'))())
+   :               ^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/exprs/paren-pure/2/input.js:1:1]
+ 1 | 
+ 2 | /*#__PURE__*/((() => import('./any'))())
+   :               ^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x ParenExpr
+   ,-[$DIR/tests/comments/exprs/paren-pure/2/input.js:1:1]
+ 1 | 
+ 2 | /*#__PURE__*/((() => import('./any'))())
+   :               ^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/exprs/paren-pure/2/input.js:1:1]
+ 1 | 
+ 2 | /*#__PURE__*/((() => import('./any'))())
+   :                ^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x ArrowExpr
+   ,-[$DIR/tests/comments/exprs/paren-pure/2/input.js:1:1]
+ 1 | 
+ 2 | /*#__PURE__*/((() => import('./any'))())
+   :                ^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x BlockStmtOrExpr
+   ,-[$DIR/tests/comments/exprs/paren-pure/2/input.js:1:1]
+ 1 | 
+ 2 | /*#__PURE__*/((() => import('./any'))())
+   :                      ^^^^^^^^^^^^^^^
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/exprs/paren-pure/2/input.js:1:1]
+ 1 | 
+ 2 | /*#__PURE__*/((() => import('./any'))())
+   :                      ^^^^^^^^^^^^^^^
+   `----
+
+  x CallExpr
+   ,-[$DIR/tests/comments/exprs/paren-pure/2/input.js:1:1]
+ 1 | 
+ 2 | /*#__PURE__*/((() => import('./any'))())
+   :                      ^^^^^^^^^^^^^^^
+   `----
+
+  x Callee
+   ,-[$DIR/tests/comments/exprs/paren-pure/2/input.js:1:1]
+ 1 | 
+ 2 | /*#__PURE__*/((() => import('./any'))())
+   :                      ^^^^^^
+   `----
+
+  x ExprOrSpread
+   ,-[$DIR/tests/comments/exprs/paren-pure/2/input.js:1:1]
+ 1 | 
+ 2 | /*#__PURE__*/((() => import('./any'))())
+   :                             ^^^^^^^
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/exprs/paren-pure/2/input.js:1:1]
+ 1 | 
+ 2 | /*#__PURE__*/((() => import('./any'))())
+   :                             ^^^^^^^
+   `----
+
+  x Lit
+   ,-[$DIR/tests/comments/exprs/paren-pure/2/input.js:1:1]
+ 1 | 
+ 2 | /*#__PURE__*/((() => import('./any'))())
+   :                             ^^^^^^^
+   `----
+
+  x Str
+   ,-[$DIR/tests/comments/exprs/paren-pure/2/input.js:1:1]
+ 1 | 
+ 2 | /*#__PURE__*/((() => import('./any'))())
+   :                             ^^^^^^^
+   `----
diff --git a/crates/swc_ecma_parser/tests/comments/exprs/paren-pure/2/input.js.swc-stderr b/crates/swc_ecma_parser/tests/comments/exprs/paren-pure/2/input.js.swc-stderr
new file mode 100644
index 00000000000..5e478e1f21a
--- /dev/null
+++ b/crates/swc_ecma_parser/tests/comments/exprs/paren-pure/2/input.js.swc-stderr
@@ -0,0 +1,10 @@
+
+  > Leading (lo)
+
+Error: 
+  > #__PURE__
+   ,-[$DIR/tests/comments/exprs/paren-pure/2/input.js:1:1]
+ 1 | 
+ 2 | /*#__PURE__*/((() => import('./any'))())
+   :              ^
+   `----
diff --git a/crates/swc_ecma_parser/tests/comments/exprs/paren-pure/3/input.js b/crates/swc_ecma_parser/tests/comments/exprs/paren-pure/3/input.js
new file mode 100644
index 00000000000..a26328f881b
--- /dev/null
+++ b/crates/swc_ecma_parser/tests/comments/exprs/paren-pure/3/input.js
@@ -0,0 +1 @@
+/*#__PURE__*/(((() => import('./any'))()))
diff --git a/crates/swc_ecma_parser/tests/comments/exprs/paren-pure/3/input.js.span.swc-stderr b/crates/swc_ecma_parser/tests/comments/exprs/paren-pure/3/input.js.span.swc-stderr
new file mode 100644
index 00000000000..35f144aa130
--- /dev/null
+++ b/crates/swc_ecma_parser/tests/comments/exprs/paren-pure/3/input.js.span.swc-stderr
@@ -0,0 +1,138 @@
+
+  x Module
+   ,-[$DIR/tests/comments/exprs/paren-pure/3/input.js:1:1]
+ 1 | /*#__PURE__*/(((() => import('./any'))()))
+   :              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x ModuleItem
+   ,-[$DIR/tests/comments/exprs/paren-pure/3/input.js:1:1]
+ 1 | /*#__PURE__*/(((() => import('./any'))()))
+   :              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x Stmt
+   ,-[$DIR/tests/comments/exprs/paren-pure/3/input.js:1:1]
+ 1 | /*#__PURE__*/(((() => import('./any'))()))
+   :              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x ExprStmt
+   ,-[$DIR/tests/comments/exprs/paren-pure/3/input.js:1:1]
+ 1 | /*#__PURE__*/(((() => import('./any'))()))
+   :              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/exprs/paren-pure/3/input.js:1:1]
+ 1 | /*#__PURE__*/(((() => import('./any'))()))
+   :              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x ParenExpr
+   ,-[$DIR/tests/comments/exprs/paren-pure/3/input.js:1:1]
+ 1 | /*#__PURE__*/(((() => import('./any'))()))
+   :              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/exprs/paren-pure/3/input.js:1:1]
+ 1 | /*#__PURE__*/(((() => import('./any'))()))
+   :               ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x ParenExpr
+   ,-[$DIR/tests/comments/exprs/paren-pure/3/input.js:1:1]
+ 1 | /*#__PURE__*/(((() => import('./any'))()))
+   :               ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/exprs/paren-pure/3/input.js:1:1]
+ 1 | /*#__PURE__*/(((() => import('./any'))()))
+   :                ^^^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x CallExpr
+   ,-[$DIR/tests/comments/exprs/paren-pure/3/input.js:1:1]
+ 1 | /*#__PURE__*/(((() => import('./any'))()))
+   :                ^^^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x Callee
+   ,-[$DIR/tests/comments/exprs/paren-pure/3/input.js:1:1]
+ 1 | /*#__PURE__*/(((() => import('./any'))()))
+   :                ^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/exprs/paren-pure/3/input.js:1:1]
+ 1 | /*#__PURE__*/(((() => import('./any'))()))
+   :                ^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x ParenExpr
+   ,-[$DIR/tests/comments/exprs/paren-pure/3/input.js:1:1]
+ 1 | /*#__PURE__*/(((() => import('./any'))()))
+   :                ^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/exprs/paren-pure/3/input.js:1:1]
+ 1 | /*#__PURE__*/(((() => import('./any'))()))
+   :                 ^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x ArrowExpr
+   ,-[$DIR/tests/comments/exprs/paren-pure/3/input.js:1:1]
+ 1 | /*#__PURE__*/(((() => import('./any'))()))
+   :                 ^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x BlockStmtOrExpr
+   ,-[$DIR/tests/comments/exprs/paren-pure/3/input.js:1:1]
+ 1 | /*#__PURE__*/(((() => import('./any'))()))
+   :                       ^^^^^^^^^^^^^^^
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/exprs/paren-pure/3/input.js:1:1]
+ 1 | /*#__PURE__*/(((() => import('./any'))()))
+   :                       ^^^^^^^^^^^^^^^
+   `----
+
+  x CallExpr
+   ,-[$DIR/tests/comments/exprs/paren-pure/3/input.js:1:1]
+ 1 | /*#__PURE__*/(((() => import('./any'))()))
+   :                       ^^^^^^^^^^^^^^^
+   `----
+
+  x Callee
+   ,-[$DIR/tests/comments/exprs/paren-pure/3/input.js:1:1]
+ 1 | /*#__PURE__*/(((() => import('./any'))()))
+   :                       ^^^^^^
+   `----
+
+  x ExprOrSpread
+   ,-[$DIR/tests/comments/exprs/paren-pure/3/input.js:1:1]
+ 1 | /*#__PURE__*/(((() => import('./any'))()))
+   :                              ^^^^^^^
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/exprs/paren-pure/3/input.js:1:1]
+ 1 | /*#__PURE__*/(((() => import('./any'))()))
+   :                              ^^^^^^^
+   `----
+
+  x Lit
+   ,-[$DIR/tests/comments/exprs/paren-pure/3/input.js:1:1]
+ 1 | /*#__PURE__*/(((() => import('./any'))()))
+   :                              ^^^^^^^
+   `----
+
+  x Str
+   ,-[$DIR/tests/comments/exprs/paren-pure/3/input.js:1:1]
+ 1 | /*#__PURE__*/(((() => import('./any'))()))
+   :                              ^^^^^^^
+   `----
diff --git a/crates/swc_ecma_parser/tests/comments/exprs/paren-pure/3/input.js.swc-stderr b/crates/swc_ecma_parser/tests/comments/exprs/paren-pure/3/input.js.swc-stderr
new file mode 100644
index 00000000000..2d478fadb19
--- /dev/null
+++ b/crates/swc_ecma_parser/tests/comments/exprs/paren-pure/3/input.js.swc-stderr
@@ -0,0 +1,9 @@
+
+  > Leading (lo)
+
+Error: 
+  > #__PURE__
+   ,-[$DIR/tests/comments/exprs/paren-pure/3/input.js:1:1]
+ 1 | /*#__PURE__*/(((() => import('./any'))()))
+   :              ^
+   `----
diff --git a/crates/swc_ecma_parser/tests/comments/issue-3715/input.js.span.swc-stderr b/crates/swc_ecma_parser/tests/comments/issue-3715/input.js.span.swc-stderr
new file mode 100644
index 00000000000..01eff2f7561
--- /dev/null
+++ b/crates/swc_ecma_parser/tests/comments/issue-3715/input.js.span.swc-stderr
@@ -0,0 +1,54 @@
+
+  x Module
+   ,-[$DIR/tests/comments/issue-3715/input.js:1:1]
+ 1 | a() /* IMPORTANT_DO_NOT_REMOVE */;
+   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x ModuleItem
+   ,-[$DIR/tests/comments/issue-3715/input.js:1:1]
+ 1 | a() /* IMPORTANT_DO_NOT_REMOVE */;
+   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x Stmt
+   ,-[$DIR/tests/comments/issue-3715/input.js:1:1]
+ 1 | a() /* IMPORTANT_DO_NOT_REMOVE */;
+   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x ExprStmt
+   ,-[$DIR/tests/comments/issue-3715/input.js:1:1]
+ 1 | a() /* IMPORTANT_DO_NOT_REMOVE */;
+   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/issue-3715/input.js:1:1]
+ 1 | a() /* IMPORTANT_DO_NOT_REMOVE */;
+   : ^^^
+   `----
+
+  x CallExpr
+   ,-[$DIR/tests/comments/issue-3715/input.js:1:1]
+ 1 | a() /* IMPORTANT_DO_NOT_REMOVE */;
+   : ^^^
+   `----
+
+  x Callee
+   ,-[$DIR/tests/comments/issue-3715/input.js:1:1]
+ 1 | a() /* IMPORTANT_DO_NOT_REMOVE */;
+   : ^
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/issue-3715/input.js:1:1]
+ 1 | a() /* IMPORTANT_DO_NOT_REMOVE */;
+   : ^
+   `----
+
+  x Ident
+   ,-[$DIR/tests/comments/issue-3715/input.js:1:1]
+ 1 | a() /* IMPORTANT_DO_NOT_REMOVE */;
+   : ^
+   `----
diff --git a/crates/swc_ecma_parser/tests/comments/issue-4876/input.js.span.swc-stderr b/crates/swc_ecma_parser/tests/comments/issue-4876/input.js.span.swc-stderr
new file mode 100644
index 00000000000..a68a800bfe3
--- /dev/null
+++ b/crates/swc_ecma_parser/tests/comments/issue-4876/input.js.span.swc-stderr
@@ -0,0 +1,128 @@
+
+  x Module
+    ,-[$DIR/tests/comments/issue-4876/input.js:9:1]
+  9 | // a
+ 10 | console.log(1);
+    : ^^^^^^^^^^^^^^^
+ 11 | // b
+    `----
+
+  x ModuleItem
+    ,-[$DIR/tests/comments/issue-4876/input.js:9:1]
+  9 | // a
+ 10 | console.log(1);
+    : ^^^^^^^^^^^^^^^
+ 11 | // b
+    `----
+
+  x Stmt
+    ,-[$DIR/tests/comments/issue-4876/input.js:9:1]
+  9 | // a
+ 10 | console.log(1);
+    : ^^^^^^^^^^^^^^^
+ 11 | // b
+    `----
+
+  x ExprStmt
+    ,-[$DIR/tests/comments/issue-4876/input.js:9:1]
+  9 | // a
+ 10 | console.log(1);
+    : ^^^^^^^^^^^^^^^
+ 11 | // b
+    `----
+
+  x Expr
+    ,-[$DIR/tests/comments/issue-4876/input.js:9:1]
+  9 | // a
+ 10 | console.log(1);
+    : ^^^^^^^^^^^^^^
+ 11 | // b
+    `----
+
+  x CallExpr
+    ,-[$DIR/tests/comments/issue-4876/input.js:9:1]
+  9 | // a
+ 10 | console.log(1);
+    : ^^^^^^^^^^^^^^
+ 11 | // b
+    `----
+
+  x Callee
+    ,-[$DIR/tests/comments/issue-4876/input.js:9:1]
+  9 | // a
+ 10 | console.log(1);
+    : ^^^^^^^^^^^
+ 11 | // b
+    `----
+
+  x Expr
+    ,-[$DIR/tests/comments/issue-4876/input.js:9:1]
+  9 | // a
+ 10 | console.log(1);
+    : ^^^^^^^^^^^
+ 11 | // b
+    `----
+
+  x MemberExpr
+    ,-[$DIR/tests/comments/issue-4876/input.js:9:1]
+  9 | // a
+ 10 | console.log(1);
+    : ^^^^^^^^^^^
+ 11 | // b
+    `----
+
+  x Expr
+    ,-[$DIR/tests/comments/issue-4876/input.js:9:1]
+  9 | // a
+ 10 | console.log(1);
+    : ^^^^^^^
+ 11 | // b
+    `----
+
+  x Ident
+    ,-[$DIR/tests/comments/issue-4876/input.js:9:1]
+  9 | // a
+ 10 | console.log(1);
+    : ^^^^^^^
+ 11 | // b
+    `----
+
+  x Ident
+    ,-[$DIR/tests/comments/issue-4876/input.js:9:1]
+  9 | // a
+ 10 | console.log(1);
+    :         ^^^
+ 11 | // b
+    `----
+
+  x ExprOrSpread
+    ,-[$DIR/tests/comments/issue-4876/input.js:9:1]
+  9 | // a
+ 10 | console.log(1);
+    :             ^
+ 11 | // b
+    `----
+
+  x Expr
+    ,-[$DIR/tests/comments/issue-4876/input.js:9:1]
+  9 | // a
+ 10 | console.log(1);
+    :             ^
+ 11 | // b
+    `----
+
+  x Lit
+    ,-[$DIR/tests/comments/issue-4876/input.js:9:1]
+  9 | // a
+ 10 | console.log(1);
+    :             ^
+ 11 | // b
+    `----
+
+  x Number
+    ,-[$DIR/tests/comments/issue-4876/input.js:9:1]
+  9 | // a
+ 10 | console.log(1);
+    :             ^
+ 11 | // b
+    `----
diff --git a/crates/swc_ecma_parser/tests/comments/stmts/block/input.js.span.swc-stderr b/crates/swc_ecma_parser/tests/comments/stmts/block/input.js.span.swc-stderr
new file mode 100644
index 00000000000..b84edd5d604
--- /dev/null
+++ b/crates/swc_ecma_parser/tests/comments/stmts/block/input.js.span.swc-stderr
@@ -0,0 +1,63 @@
+
+  x Module
+   ,-[$DIR/tests/comments/stmts/block/input.js:1:1]
+ 1 | ,-> while (1) {
+ 2 | |       /* test */
+ 3 | `-> }
+   `----
+
+  x ModuleItem
+   ,-[$DIR/tests/comments/stmts/block/input.js:1:1]
+ 1 | ,-> while (1) {
+ 2 | |       /* test */
+ 3 | `-> }
+   `----
+
+  x Stmt
+   ,-[$DIR/tests/comments/stmts/block/input.js:1:1]
+ 1 | ,-> while (1) {
+ 2 | |       /* test */
+ 3 | `-> }
+   `----
+
+  x WhileStmt
+   ,-[$DIR/tests/comments/stmts/block/input.js:1:1]
+ 1 | ,-> while (1) {
+ 2 | |       /* test */
+ 3 | `-> }
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/stmts/block/input.js:1:1]
+ 1 | while (1) {
+   :        ^
+ 2 |     /* test */
+   `----
+
+  x Lit
+   ,-[$DIR/tests/comments/stmts/block/input.js:1:1]
+ 1 | while (1) {
+   :        ^
+ 2 |     /* test */
+   `----
+
+  x Number
+   ,-[$DIR/tests/comments/stmts/block/input.js:1:1]
+ 1 | while (1) {
+   :        ^
+ 2 |     /* test */
+   `----
+
+  x Stmt
+   ,-[$DIR/tests/comments/stmts/block/input.js:1:1]
+ 1 | ,-> while (1) {
+ 2 | |       /* test */
+ 3 | `-> }
+   `----
+
+  x BlockStmt
+   ,-[$DIR/tests/comments/stmts/block/input.js:1:1]
+ 1 | ,-> while (1) {
+ 2 | |       /* test */
+ 3 | `-> }
+   `----
diff --git a/crates/swc_ecma_parser/tests/comments/stmts/switch/input.js.span.swc-stderr b/crates/swc_ecma_parser/tests/comments/stmts/switch/input.js.span.swc-stderr
new file mode 100644
index 00000000000..db60fa41b50
--- /dev/null
+++ b/crates/swc_ecma_parser/tests/comments/stmts/switch/input.js.span.swc-stderr
@@ -0,0 +1,129 @@
+
+  x Module
+   ,-[$DIR/tests/comments/stmts/switch/input.js:1:1]
+ 1 | ,-> switch (1) {
+ 2 | |       case 2:
+ 3 | |           3;
+ 4 | |       // 4
+ 5 | `-> }
+   `----
+
+  x ModuleItem
+   ,-[$DIR/tests/comments/stmts/switch/input.js:1:1]
+ 1 | ,-> switch (1) {
+ 2 | |       case 2:
+ 3 | |           3;
+ 4 | |       // 4
+ 5 | `-> }
+   `----
+
+  x Stmt
+   ,-[$DIR/tests/comments/stmts/switch/input.js:1:1]
+ 1 | ,-> switch (1) {
+ 2 | |       case 2:
+ 3 | |           3;
+ 4 | |       // 4
+ 5 | `-> }
+   `----
+
+  x SwitchStmt
+   ,-[$DIR/tests/comments/stmts/switch/input.js:1:1]
+ 1 | ,-> switch (1) {
+ 2 | |       case 2:
+ 3 | |           3;
+ 4 | |       // 4
+ 5 | `-> }
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/stmts/switch/input.js:1:1]
+ 1 | switch (1) {
+   :         ^
+ 2 |     case 2:
+   `----
+
+  x Lit
+   ,-[$DIR/tests/comments/stmts/switch/input.js:1:1]
+ 1 | switch (1) {
+   :         ^
+ 2 |     case 2:
+   `----
+
+  x Number
+   ,-[$DIR/tests/comments/stmts/switch/input.js:1:1]
+ 1 | switch (1) {
+   :         ^
+ 2 |     case 2:
+   `----
+
+  x SwitchCase
+   ,-[$DIR/tests/comments/stmts/switch/input.js:1:1]
+ 1 |     switch (1) {
+ 2 | ,->     case 2:
+ 3 | `->         3;
+ 4 |         // 4
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/stmts/switch/input.js:1:1]
+ 1 | switch (1) {
+ 2 |     case 2:
+   :          ^
+ 3 |         3;
+   `----
+
+  x Lit
+   ,-[$DIR/tests/comments/stmts/switch/input.js:1:1]
+ 1 | switch (1) {
+ 2 |     case 2:
+   :          ^
+ 3 |         3;
+   `----
+
+  x Number
+   ,-[$DIR/tests/comments/stmts/switch/input.js:1:1]
+ 1 | switch (1) {
+ 2 |     case 2:
+   :          ^
+ 3 |         3;
+   `----
+
+  x Stmt
+   ,-[$DIR/tests/comments/stmts/switch/input.js:2:1]
+ 2 |     case 2:
+ 3 |         3;
+   :         ^^
+ 4 |     // 4
+   `----
+
+  x ExprStmt
+   ,-[$DIR/tests/comments/stmts/switch/input.js:2:1]
+ 2 |     case 2:
+ 3 |         3;
+   :         ^^
+ 4 |     // 4
+   `----
+
+  x Expr
+   ,-[$DIR/tests/comments/stmts/switch/input.js:2:1]
+ 2 |     case 2:
+ 3 |         3;
+   :         ^
+ 4 |     // 4
+   `----
+
+  x Lit
+   ,-[$DIR/tests/comments/stmts/switch/input.js:2:1]
+ 2 |     case 2:
+ 3 |         3;
+   :         ^
+ 4 |     // 4
+   `----
+
+  x Number
+   ,-[$DIR/tests/comments/stmts/switch/input.js:2:1]
+ 2 |     case 2:
+ 3 |         3;
+   :         ^
+ 4 |     // 4
+   `----
diff --git a/crates/swc_ecma_parser/tests/span.rs b/crates/swc_ecma_parser/tests/span.rs
index c743edee220..186474e64c0 100644
--- a/crates/swc_ecma_parser/tests/span.rs
+++ b/crates/swc_ecma_parser/tests/span.rs
@@ -7,6 +7,7 @@ use swc_ecma_visit::{Visit, VisitWith};
 
 #[testing::fixture("tests/span/**/*.js")]
 #[testing::fixture("tests/span/**/*.ts")]
+#[testing::fixture("tests/comments/**/*.js")]
 fn span(entry: PathBuf) {
     let dir = entry.parent().unwrap().to_path_buf();
     let file_name = entry
@@ -53,7 +54,7 @@ fn span(entry: PathBuf) {
     })
     .expect_err("failed to run test");
 
-    let ref_file = format!("{}.swc-stderr", dir.join(&file_name).display());
+    let ref_file = format!("{}.span.swc-stderr", dir.join(&file_name).display());
 
     content.compare_to_file(ref_file).unwrap();
 }
diff --git a/crates/swc_ecma_parser/tests/span/js/binary.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/binary.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/binary.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/binary.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/decl/accessor.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/decl/accessor.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/decl/accessor.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/decl/accessor.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/decl/async-fn.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/decl/async-fn.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/decl/async-fn.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/decl/async-fn.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/decl/class-no-close-brace.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/decl/class-no-close-brace.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/decl/class-no-close-brace.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/decl/class-no-close-brace.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/decl/class.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/decl/class.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/decl/class.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/decl/class.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/decl/computed-key.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/decl/computed-key.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/decl/computed-key.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/decl/computed-key.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/decl/constructor.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/decl/constructor.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/decl/constructor.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/decl/constructor.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/decl/decorator.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/decl/decorator.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/decl/decorator.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/decl/decorator.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/decl/default-export.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/decl/default-export.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/decl/default-export.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/decl/default-export.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/decl/default-import-string-names.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/decl/default-import-string-names.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/decl/default-import-string-names.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/decl/default-import-string-names.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/decl/export-decl.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/decl/export-decl.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/decl/export-decl.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/decl/export-decl.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/decl/export-string-names-1.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/decl/export-string-names-1.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/decl/export-string-names-1.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/decl/export-string-names-1.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/decl/export-string-names-2.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/decl/export-string-names-2.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/decl/export-string-names-2.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/decl/export-string-names-2.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/decl/export-string-names-3.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/decl/export-string-names-3.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/decl/export-string-names-3.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/decl/export-string-names-3.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/decl/export.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/decl/export.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/decl/export.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/decl/export.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/decl/fn.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/decl/fn.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/decl/fn.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/decl/fn.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/decl/import-string-names-1.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/decl/import-string-names-1.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/decl/import-string-names-1.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/decl/import-string-names-1.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/decl/import-string-names-2.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/decl/import-string-names-2.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/decl/import-string-names-2.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/decl/import-string-names-2.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/decl/named-export.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/decl/named-export.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/decl/named-export.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/decl/named-export.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/decl/namespace-export-string-names.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/decl/namespace-export-string-names.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/decl/namespace-export-string-names.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/decl/namespace-export-string-names.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/decl/private-method.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/decl/private-method.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/decl/private-method.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/decl/private-method.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/decl/private-prop.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/decl/private-prop.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/decl/private-prop.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/decl/private-prop.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/decl/static-blocks-with-line-breaks.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/decl/static-blocks-with-line-breaks.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/decl/static-blocks-with-line-breaks.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/decl/static-blocks-with-line-breaks.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/decl/static-blocks.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/decl/static-blocks.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/decl/static-blocks.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/decl/static-blocks.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/expr/array.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/expr/array.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/expr/array.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/expr/array.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/expr/arrow-2.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/expr/arrow-2.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/expr/arrow-2.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/expr/arrow-2.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/expr/arrow-with-block.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/expr/arrow-with-block.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/expr/arrow-with-block.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/expr/arrow-with-block.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/expr/arrow-with-paren.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/expr/arrow-with-paren.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/expr/arrow-with-paren.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/expr/arrow-with-paren.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/expr/arrow.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/expr/arrow.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/expr/arrow.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/expr/arrow.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/expr/await.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/expr/await.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/expr/await.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/expr/await.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/expr/cond.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/expr/cond.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/expr/cond.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/expr/cond.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/expr/dynamic-import.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/expr/dynamic-import.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/expr/dynamic-import.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/expr/dynamic-import.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/expr/export-defaul.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/expr/export-defaul.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/expr/export-defaul.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/expr/export-defaul.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/expr/member.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/expr/member.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/expr/member.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/expr/member.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/expr/new.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/expr/new.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/expr/new.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/expr/new.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/expr/null.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/expr/null.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/expr/null.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/expr/null.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/expr/object.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/expr/object.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/expr/object.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/expr/object.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/expr/optional-chaining.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/expr/optional-chaining.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/expr/optional-chaining.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/expr/optional-chaining.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/expr/paren.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/expr/paren.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/expr/paren.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/expr/paren.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/expr/regex.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/expr/regex.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/expr/regex.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/expr/regex.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/expr/seq.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/expr/seq.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/expr/seq.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/expr/seq.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/expr/string-literal.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/expr/string-literal.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/expr/string-literal.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/expr/string-literal.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/expr/tagged-tpl.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/expr/tagged-tpl.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/expr/tagged-tpl.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/expr/tagged-tpl.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/expr/tpl.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/expr/tpl.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/expr/tpl.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/expr/tpl.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/expr/unary.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/expr/unary.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/expr/unary.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/expr/unary.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/expr/update.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/expr/update.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/expr/update.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/expr/update.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/expr/yield.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/expr/yield.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/expr/yield.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/expr/yield.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/issue-3236/arrow_function.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/issue-3236/arrow_function.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/issue-3236/arrow_function.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/issue-3236/arrow_function.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/issue-3236/function.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/issue-3236/function.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/issue-3236/function.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/issue-3236/function.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/pat/array.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/pat/array.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/pat/array.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/pat/array.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/pat/assign-pat-prop.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/pat/assign-pat-prop.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/pat/assign-pat-prop.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/pat/assign-pat-prop.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/pat/assign-pat.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/pat/assign-pat.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/pat/assign-pat.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/pat/assign-pat.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/srcmap/1/input.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/srcmap/1/input.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/srcmap/1/input.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/srcmap/1/input.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/srcmap/2/input.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/srcmap/2/input.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/srcmap/2/input.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/srcmap/2/input.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/srcmap/3/input.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/srcmap/3/input.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/srcmap/3/input.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/srcmap/3/input.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/stmt/debugger.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/stmt/debugger.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/stmt/debugger.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/stmt/debugger.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/stmt/do-while.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/stmt/do-while.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/stmt/do-while.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/stmt/do-while.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/stmt/empty.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/stmt/empty.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/stmt/empty.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/stmt/empty.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/stmt/for-in.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/stmt/for-in.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/stmt/for-in.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/stmt/for-in.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/stmt/for-of.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/stmt/for-of.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/stmt/for-of.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/stmt/for-of.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/stmt/if.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/stmt/if.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/stmt/if.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/stmt/if.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/stmt/label.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/stmt/label.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/stmt/label.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/stmt/label.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/stmt/return.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/stmt/return.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/stmt/return.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/stmt/return.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/stmt/switch.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/stmt/switch.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/stmt/switch.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/stmt/switch.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/stmt/throw.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/stmt/throw.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/stmt/throw.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/stmt/throw.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/stmt/try-catch-finally.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/stmt/try-catch-finally.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/stmt/try-catch-finally.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/stmt/try-catch-finally.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/stmt/try-catch.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/stmt/try-catch.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/stmt/try-catch.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/stmt/try-catch.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/stmt/try-finally.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/stmt/try-finally.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/stmt/try-finally.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/stmt/try-finally.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/stmt/while.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/stmt/while.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/stmt/while.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/stmt/while.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/stmt/with.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/stmt/with.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/stmt/with.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/stmt/with.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/super/expr.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/super/expr.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/super/expr.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/super/expr.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/super/obj1.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/super/obj1.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/super/obj1.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/super/obj1.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/super/obj2.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/super/obj2.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/super/obj2.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/super/obj2.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/super/obj3.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/super/obj3.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/super/obj3.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/super/obj3.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/js/super/obj4.js.swc-stderr b/crates/swc_ecma_parser/tests/span/js/super/obj4.js.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/js/super/obj4.js.swc-stderr
rename to crates/swc_ecma_parser/tests/span/js/super/obj4.js.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/ts/decl/decorated-class.ts.swc-stderr b/crates/swc_ecma_parser/tests/span/ts/decl/decorated-class.ts.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/ts/decl/decorated-class.ts.swc-stderr
rename to crates/swc_ecma_parser/tests/span/ts/decl/decorated-class.ts.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/ts/decl/export-const-enum.ts.swc-stderr b/crates/swc_ecma_parser/tests/span/ts/decl/export-const-enum.ts.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/ts/decl/export-const-enum.ts.swc-stderr
rename to crates/swc_ecma_parser/tests/span/ts/decl/export-const-enum.ts.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/ts/decl/import-equals.ts.swc-stderr b/crates/swc_ecma_parser/tests/span/ts/decl/import-equals.ts.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/ts/decl/import-equals.ts.swc-stderr
rename to crates/swc_ecma_parser/tests/span/ts/decl/import-equals.ts.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/ts/declare/class.ts.swc-stderr b/crates/swc_ecma_parser/tests/span/ts/declare/class.ts.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/ts/declare/class.ts.swc-stderr
rename to crates/swc_ecma_parser/tests/span/ts/declare/class.ts.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/ts/declare/enum.ts.swc-stderr b/crates/swc_ecma_parser/tests/span/ts/declare/enum.ts.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/ts/declare/enum.ts.swc-stderr
rename to crates/swc_ecma_parser/tests/span/ts/declare/enum.ts.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/ts/declare/function.ts.swc-stderr b/crates/swc_ecma_parser/tests/span/ts/declare/function.ts.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/ts/declare/function.ts.swc-stderr
rename to crates/swc_ecma_parser/tests/span/ts/declare/function.ts.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/ts/declare/module.ts.swc-stderr b/crates/swc_ecma_parser/tests/span/ts/declare/module.ts.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/ts/declare/module.ts.swc-stderr
rename to crates/swc_ecma_parser/tests/span/ts/declare/module.ts.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/ts/declare/var.ts.swc-stderr b/crates/swc_ecma_parser/tests/span/ts/declare/var.ts.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/ts/declare/var.ts.swc-stderr
rename to crates/swc_ecma_parser/tests/span/ts/declare/var.ts.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/ts/expr/arrow-type-params.ts.swc-stderr b/crates/swc_ecma_parser/tests/span/ts/expr/arrow-type-params.ts.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/ts/expr/arrow-type-params.ts.swc-stderr
rename to crates/swc_ecma_parser/tests/span/ts/expr/arrow-type-params.ts.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/ts/expr/arrow.ts.swc-stderr b/crates/swc_ecma_parser/tests/span/ts/expr/arrow.ts.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/ts/expr/arrow.ts.swc-stderr
rename to crates/swc_ecma_parser/tests/span/ts/expr/arrow.ts.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/ts/expr/as.ts.swc-stderr b/crates/swc_ecma_parser/tests/span/ts/expr/as.ts.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/ts/expr/as.ts.swc-stderr
rename to crates/swc_ecma_parser/tests/span/ts/expr/as.ts.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/ts/expr/const-assertion.ts.swc-stderr b/crates/swc_ecma_parser/tests/span/ts/expr/const-assertion.ts.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/ts/expr/const-assertion.ts.swc-stderr
rename to crates/swc_ecma_parser/tests/span/ts/expr/const-assertion.ts.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/ts/expr/type-args.ts.swc-stderr b/crates/swc_ecma_parser/tests/span/ts/expr/type-args.ts.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/ts/expr/type-args.ts.swc-stderr
rename to crates/swc_ecma_parser/tests/span/ts/expr/type-args.ts.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/ts/stmt/try-catch-unknown.ts.swc-stderr b/crates/swc_ecma_parser/tests/span/ts/stmt/try-catch-unknown.ts.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/ts/stmt/try-catch-unknown.ts.swc-stderr
rename to crates/swc_ecma_parser/tests/span/ts/stmt/try-catch-unknown.ts.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/ts/type/alias.ts.swc-stderr b/crates/swc_ecma_parser/tests/span/ts/type/alias.ts.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/ts/type/alias.ts.swc-stderr
rename to crates/swc_ecma_parser/tests/span/ts/type/alias.ts.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/ts/type/array.ts.swc-stderr b/crates/swc_ecma_parser/tests/span/ts/type/array.ts.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/ts/type/array.ts.swc-stderr
rename to crates/swc_ecma_parser/tests/span/ts/type/array.ts.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/ts/type/cond.ts.swc-stderr b/crates/swc_ecma_parser/tests/span/ts/type/cond.ts.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/ts/type/cond.ts.swc-stderr
rename to crates/swc_ecma_parser/tests/span/ts/type/cond.ts.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/ts/type/constructor-type.ts.swc-stderr b/crates/swc_ecma_parser/tests/span/ts/type/constructor-type.ts.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/ts/type/constructor-type.ts.swc-stderr
rename to crates/swc_ecma_parser/tests/span/ts/type/constructor-type.ts.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/ts/type/enum.ts.swc-stderr b/crates/swc_ecma_parser/tests/span/ts/type/enum.ts.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/ts/type/enum.ts.swc-stderr
rename to crates/swc_ecma_parser/tests/span/ts/type/enum.ts.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/ts/type/fn.ts.swc-stderr b/crates/swc_ecma_parser/tests/span/ts/type/fn.ts.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/ts/type/fn.ts.swc-stderr
rename to crates/swc_ecma_parser/tests/span/ts/type/fn.ts.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/ts/type/import.ts.swc-stderr b/crates/swc_ecma_parser/tests/span/ts/type/import.ts.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/ts/type/import.ts.swc-stderr
rename to crates/swc_ecma_parser/tests/span/ts/type/import.ts.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/ts/type/interface.ts.swc-stderr b/crates/swc_ecma_parser/tests/span/ts/type/interface.ts.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/ts/type/interface.ts.swc-stderr
rename to crates/swc_ecma_parser/tests/span/ts/type/interface.ts.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/ts/type/intersection.ts.swc-stderr b/crates/swc_ecma_parser/tests/span/ts/type/intersection.ts.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/ts/type/intersection.ts.swc-stderr
rename to crates/swc_ecma_parser/tests/span/ts/type/intersection.ts.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/ts/type/tuple.ts.swc-stderr b/crates/swc_ecma_parser/tests/span/ts/type/tuple.ts.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/ts/type/tuple.ts.swc-stderr
rename to crates/swc_ecma_parser/tests/span/ts/type/tuple.ts.span.swc-stderr
diff --git a/crates/swc_ecma_parser/tests/span/ts/type/tuple/optional.ts.swc-stderr b/crates/swc_ecma_parser/tests/span/ts/type/tuple/optional.ts.span.swc-stderr
similarity index 100%
rename from crates/swc_ecma_parser/tests/span/ts/type/tuple/optional.ts.swc-stderr
rename to crates/swc_ecma_parser/tests/span/ts/type/tuple/optional.ts.span.swc-stderr
diff --git a/crates/swc_node_comments/src/lib.rs b/crates/swc_node_comments/src/lib.rs
index 589ff7cf4e4..7059f0f9642 100644
--- a/crates/swc_node_comments/src/lib.rs
+++ b/crates/swc_node_comments/src/lib.rs
@@ -132,4 +132,29 @@ impl Comments for SwcComments {
 
         ret
     }
+
+    fn has_flag(&self, lo: BytePos, flag: &str) -> bool {
+        self.with_leading(lo, |comments| {
+            for c in comments {
+                if c.kind == CommentKind::Block {
+                    for line in c.text.lines() {
+                        // jsdoc
+                        let line = line.trim_start_matches(['*', ' ']);
+                        let line = line.trim();
+
+                        //
+                        if line.len() == (flag.len() + 5)
+                            && (line.starts_with("#__") || line.starts_with("@__"))
+                            && line.ends_with("__")
+                            && flag == &line[3..line.len() - 2]
+                        {
+                            return true;
+                        }
+                    }
+                }
+            }
+
+            false
+        })
+    }
 }