From cdf0d8a8b59a05498b6ca609d8a2ecf3c2f35f28 Mon Sep 17 00:00:00 2001
From: Alexander Akait <4567934+alexander-akait@users.noreply.github.com>
Date: Fri, 2 Dec 2022 07:56:34 +0300
Subject: [PATCH] fix(xml/parser): Fix parsing of legacy document types (#6555)

---
 crates/swc_xml_parser/src/lexer/mod.rs        |  41 +++
 .../document_type/internal_subset-1/dom.txt   |   3 +
 .../document_type/internal_subset-1/input.xml |   5 +
 .../internal_subset-1/output.json             |  44 +++
 .../internal_subset-1/span.swc-stderr         |  55 ++++
 .../document_type/internal_subset-2/dom.txt   |   3 +
 .../document_type/internal_subset-2/input.xml |   4 +
 .../internal_subset-2/output.json             |  44 +++
 .../internal_subset-2/span.swc-stderr         |  52 +++
 .../document_type/internal_subset-3/dom.txt   |   3 +
 .../document_type/internal_subset-3/input.xml |   6 +
 .../internal_subset-3/output.json             |  44 +++
 .../internal_subset-3/span.swc-stderr         |  58 ++++
 .../document_type/internal_subset-4/dom.txt   |   3 +
 .../document_type/internal_subset-4/input.xml |   4 +
 .../internal_subset-4/output.json             |  44 +++
 .../internal_subset-4/span.swc-stderr         |  52 +++
 .../document_type/internal_subset-5/dom.txt   |   3 +
 .../document_type/internal_subset-5/input.xml |   7 +
 .../internal_subset-5/output.json             |  44 +++
 .../internal_subset-5/span.swc-stderr         |  61 ++++
 .../document_type/internal_subset/dom.txt     |  22 ++
 .../document_type/internal_subset/input.xml   |  16 +
 .../document_type/internal_subset/output.json | 182 +++++++++++
 .../internal_subset/span.swc-stderr           | 300 ++++++++++++++++++
 .../internal_subset_empty-1/dom.txt           |   3 +
 .../internal_subset_empty-1/input.xml         |   2 +
 .../internal_subset_empty-1/output.json       |  44 +++
 .../internal_subset_empty-1/span.swc-stderr   |  48 +++
 .../internal_subset_empty-2/dom.txt           |   3 +
 .../internal_subset_empty-2/input.xml         |   2 +
 .../internal_subset_empty-2/output.json       |  44 +++
 .../internal_subset_empty-2/span.swc-stderr   |  48 +++
 .../internal_subset_empty/dom.txt             |   3 +
 .../internal_subset_empty/input.xml           |   2 +
 .../internal_subset_empty/output.json         |  44 +++
 .../internal_subset_empty/span.swc-stderr     |  48 +++
 .../fixture/document_type/only-name/dom.txt   |   3 +
 .../fixture/document_type/only-name/input.xml |   2 +
 .../document_type/only-name/output.json       |  44 +++
 .../document_type/only-name/span.swc-stderr   |  48 +++
 .../fixture/document_type/public_id-1/dom.txt |   3 +
 .../document_type/public_id-1/input.xml       |   2 +
 .../document_type/public_id-1/output.json     |  44 +++
 .../document_type/public_id-1/span.swc-stderr |  48 +++
 .../fixture/document_type/public_id/dom.txt   |   3 +
 .../fixture/document_type/public_id/input.xml |   2 +
 .../document_type/public_id/output.json       |  44 +++
 .../document_type/public_id/span.swc-stderr   |  48 +++
 .../fixture/document_type/system_id-1/dom.txt |   3 +
 .../document_type/system_id-1/input.xml       |   2 +
 .../document_type/system_id-1/output.json     |  44 +++
 .../document_type/system_id-1/span.swc-stderr |  48 +++
 .../fixture/document_type/system_id/dom.txt   |   3 +
 .../fixture/document_type/system_id/input.xml |   2 +
 .../document_type/system_id/output.json       |  44 +++
 .../document_type/system_id/span.swc-stderr   |  48 +++
 57 files changed, 1876 insertions(+)
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset-1/dom.txt
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset-1/input.xml
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset-1/output.json
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset-1/span.swc-stderr
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset-2/dom.txt
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset-2/input.xml
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset-2/output.json
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset-2/span.swc-stderr
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset-3/dom.txt
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset-3/input.xml
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset-3/output.json
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset-3/span.swc-stderr
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset-4/dom.txt
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset-4/input.xml
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset-4/output.json
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset-4/span.swc-stderr
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset-5/dom.txt
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset-5/input.xml
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset-5/output.json
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset-5/span.swc-stderr
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset/dom.txt
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset/input.xml
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset/output.json
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset/span.swc-stderr
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-1/dom.txt
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-1/input.xml
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-1/output.json
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-1/span.swc-stderr
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-2/dom.txt
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-2/input.xml
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-2/output.json
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-2/span.swc-stderr
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty/dom.txt
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty/input.xml
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty/output.json
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty/span.swc-stderr
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/only-name/dom.txt
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/only-name/input.xml
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/only-name/output.json
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/only-name/span.swc-stderr
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/public_id-1/dom.txt
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/public_id-1/input.xml
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/public_id-1/output.json
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/public_id-1/span.swc-stderr
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/public_id/dom.txt
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/public_id/input.xml
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/public_id/output.json
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/public_id/span.swc-stderr
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/system_id-1/dom.txt
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/system_id-1/input.xml
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/system_id-1/output.json
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/system_id-1/span.swc-stderr
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/system_id/dom.txt
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/system_id/input.xml
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/system_id/output.json
 create mode 100644 crates/swc_xml_parser/tests/fixture/document_type/system_id/span.swc-stderr

diff --git a/crates/swc_xml_parser/src/lexer/mod.rs b/crates/swc_xml_parser/src/lexer/mod.rs
index 6af81a1f33ea..8fc94befa1b1 100644
--- a/crates/swc_xml_parser/src/lexer/mod.rs
+++ b/crates/swc_xml_parser/src/lexer/mod.rs
@@ -61,6 +61,7 @@ pub enum State {
     DoctypeSystemIdentifierSingleQuoted,
     DoctypeSystemIdentifierDoubleQuoted,
     AfterDoctypeSystemIdentifier,
+    DoctypeTypeInternalSubSet,
     BogusDoctype,
 }
 
@@ -2245,6 +2246,12 @@ where
                         self.state = State::Data;
                         self.emit_doctype_token();
                     }
+                    // U+005B LEFT SQUARE BRACKET ([)
+                    // Switch to the doctype internal subset state.
+                    Some(c @ '[') => {
+                        self.append_raw_to_doctype_token(c);
+                        self.state = State::DoctypeTypeInternalSubSet;
+                    }
                     // EOF
                     // Parse error. Switch to the data state. Emit DOCTYPE token. Reconsume the EOF
                     // character.
@@ -2825,6 +2832,12 @@ where
                         self.state = State::Data;
                         self.emit_doctype_token();
                     }
+                    // U+005B LEFT SQUARE BRACKET ([)
+                    // Switch to the doctype internal subset state.
+                    Some(c @ '[') => {
+                        self.append_raw_to_doctype_token(c);
+                        self.state = State::DoctypeTypeInternalSubSet;
+                    }
                     // EOF
                     // Parse error. Switch to the data state. Emit DOCTYPE token. Reconsume the EOF
                     // character.
@@ -2843,6 +2856,34 @@ where
                     }
                 }
             }
+            State::DoctypeTypeInternalSubSet => {
+                // Consume the next input character:
+                match self.consume_next_char() {
+                    // U+005D RIGHT SQUARE BRACKET (])
+                    // Switch to the CDATA bracket state.
+                    Some(c @ ']') => {
+                        self.append_raw_to_doctype_token(c);
+                        self.state = State::AfterDoctypeName;
+                    }
+                    // EOF
+                    // Parse error. Switch to the data state. Emit DOCTYPE token. Reconsume the EOF
+                    // character.
+                    None => {
+                        self.emit_error(ErrorKind::EofInDoctype);
+                        self.state = State::Data;
+                        self.emit_doctype_token();
+                        self.reconsume();
+                    }
+                    // Anything else
+                    // Append the current input character to the current DOCTYPE token's system
+                    // identifier.
+                    Some(c) => {
+                        // TODO improve parse legacy declarations
+                        self.validate_input_stream_character(c);
+                        self.append_raw_to_doctype_token(c);
+                    }
+                }
+            }
             State::BogusDoctype => {
                 // Consume the next input character:
                 match self.consume_next_char() {
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-1/dom.txt b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-1/dom.txt
new file mode 100644
index 000000000000..4193c808be8b
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-1/dom.txt
@@ -0,0 +1,3 @@
+| <!DOCTYPE svg>
+| <root>
+|   "test"
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-1/input.xml b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-1/input.xml
new file mode 100644
index 000000000000..5220a26f5fdf
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-1/input.xml
@@ -0,0 +1,5 @@
+<!DOCTYPE svg [
+        <!ENTITY Pub-Status "This is a pre-release of the
+specification.">
+]>
+<root>test</root>
\ No newline at end of file
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-1/output.json b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-1/output.json
new file mode 100644
index 000000000000..cd34ac0216d1
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-1/output.json
@@ -0,0 +1,44 @@
+{
+  "type": "Document",
+  "span": {
+    "start": 1,
+    "end": 112,
+    "ctxt": 0
+  },
+  "children": [
+    {
+      "type": "DocumentType",
+      "span": {
+        "start": 1,
+        "end": 94,
+        "ctxt": 0
+      },
+      "name": "svg",
+      "publicId": null,
+      "systemId": null,
+      "raw": "<!DOCTYPE svg [\n        <!ENTITY Pub-Status \"This is a pre-release of the\nspecification.\">\n]>"
+    },
+    {
+      "type": "Element",
+      "span": {
+        "start": 95,
+        "end": 112,
+        "ctxt": 0
+      },
+      "tagName": "root",
+      "attributes": [],
+      "children": [
+        {
+          "type": "Text",
+          "span": {
+            "start": 101,
+            "end": 105,
+            "ctxt": 0
+          },
+          "data": "test",
+          "raw": "test"
+        }
+      ]
+    }
+  ]
+}
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-1/span.swc-stderr b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-1/span.swc-stderr
new file mode 100644
index 000000000000..1a4c942a497a
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-1/span.swc-stderr
@@ -0,0 +1,55 @@
+
+  x Document
+   ,-[$DIR/tests/fixture/document_type/internal_subset-1/input.xml:1:1]
+ 1 | ,-> <!DOCTYPE svg [
+ 2 | |           <!ENTITY Pub-Status "This is a pre-release of the
+ 3 | |   specification.">
+ 4 | |   ]>
+ 5 | `-> <root>test</root>
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/internal_subset-1/input.xml:1:1]
+ 1 | ,-> <!DOCTYPE svg [
+ 2 | |           <!ENTITY Pub-Status "This is a pre-release of the
+ 3 | |   specification.">
+ 4 | `-> ]>
+ 5 |     <root>test</root>
+   `----
+
+  x DocumentType
+   ,-[$DIR/tests/fixture/document_type/internal_subset-1/input.xml:1:1]
+ 1 | ,-> <!DOCTYPE svg [
+ 2 | |           <!ENTITY Pub-Status "This is a pre-release of the
+ 3 | |   specification.">
+ 4 | `-> ]>
+ 5 |     <root>test</root>
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/internal_subset-1/input.xml:4:1]
+ 4 | ]>
+ 5 | <root>test</root>
+   : ^^^^^^^^^^^^^^^^^
+   `----
+
+  x Element
+   ,-[$DIR/tests/fixture/document_type/internal_subset-1/input.xml:4:1]
+ 4 | ]>
+ 5 | <root>test</root>
+   : ^^^^^^^^^^^^^^^^^
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/internal_subset-1/input.xml:4:1]
+ 4 | ]>
+ 5 | <root>test</root>
+   :       ^^^^
+   `----
+
+  x Text
+   ,-[$DIR/tests/fixture/document_type/internal_subset-1/input.xml:4:1]
+ 4 | ]>
+ 5 | <root>test</root>
+   :       ^^^^
+   `----
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-2/dom.txt b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-2/dom.txt
new file mode 100644
index 000000000000..4193c808be8b
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-2/dom.txt
@@ -0,0 +1,3 @@
+| <!DOCTYPE svg>
+| <root>
+|   "test"
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-2/input.xml b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-2/input.xml
new file mode 100644
index 000000000000..3ed2f51f13d7
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-2/input.xml
@@ -0,0 +1,4 @@
+<!DOCTYPE svg [
+        <!ENTITY open-hatch SYSTEM "http://www.textuality.com/boilerplate/OpenHatch.xml">
+]>
+<root>test</root>
\ No newline at end of file
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-2/output.json b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-2/output.json
new file mode 100644
index 000000000000..246c755fcebd
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-2/output.json
@@ -0,0 +1,44 @@
+{
+  "type": "Document",
+  "span": {
+    "start": 1,
+    "end": 127,
+    "ctxt": 0
+  },
+  "children": [
+    {
+      "type": "DocumentType",
+      "span": {
+        "start": 1,
+        "end": 109,
+        "ctxt": 0
+      },
+      "name": "svg",
+      "publicId": null,
+      "systemId": null,
+      "raw": "<!DOCTYPE svg [\n        <!ENTITY open-hatch SYSTEM \"http://www.textuality.com/boilerplate/OpenHatch.xml\">\n]>"
+    },
+    {
+      "type": "Element",
+      "span": {
+        "start": 110,
+        "end": 127,
+        "ctxt": 0
+      },
+      "tagName": "root",
+      "attributes": [],
+      "children": [
+        {
+          "type": "Text",
+          "span": {
+            "start": 116,
+            "end": 120,
+            "ctxt": 0
+          },
+          "data": "test",
+          "raw": "test"
+        }
+      ]
+    }
+  ]
+}
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-2/span.swc-stderr b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-2/span.swc-stderr
new file mode 100644
index 000000000000..eb9f7b8f1927
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-2/span.swc-stderr
@@ -0,0 +1,52 @@
+
+  x Document
+   ,-[$DIR/tests/fixture/document_type/internal_subset-2/input.xml:1:1]
+ 1 | ,-> <!DOCTYPE svg [
+ 2 | |           <!ENTITY open-hatch SYSTEM "http://www.textuality.com/boilerplate/OpenHatch.xml">
+ 3 | |   ]>
+ 4 | `-> <root>test</root>
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/internal_subset-2/input.xml:1:1]
+ 1 | ,-> <!DOCTYPE svg [
+ 2 | |           <!ENTITY open-hatch SYSTEM "http://www.textuality.com/boilerplate/OpenHatch.xml">
+ 3 | `-> ]>
+ 4 |     <root>test</root>
+   `----
+
+  x DocumentType
+   ,-[$DIR/tests/fixture/document_type/internal_subset-2/input.xml:1:1]
+ 1 | ,-> <!DOCTYPE svg [
+ 2 | |           <!ENTITY open-hatch SYSTEM "http://www.textuality.com/boilerplate/OpenHatch.xml">
+ 3 | `-> ]>
+ 4 |     <root>test</root>
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/internal_subset-2/input.xml:3:1]
+ 3 | ]>
+ 4 | <root>test</root>
+   : ^^^^^^^^^^^^^^^^^
+   `----
+
+  x Element
+   ,-[$DIR/tests/fixture/document_type/internal_subset-2/input.xml:3:1]
+ 3 | ]>
+ 4 | <root>test</root>
+   : ^^^^^^^^^^^^^^^^^
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/internal_subset-2/input.xml:3:1]
+ 3 | ]>
+ 4 | <root>test</root>
+   :       ^^^^
+   `----
+
+  x Text
+   ,-[$DIR/tests/fixture/document_type/internal_subset-2/input.xml:3:1]
+ 3 | ]>
+ 4 | <root>test</root>
+   :       ^^^^
+   `----
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-3/dom.txt b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-3/dom.txt
new file mode 100644
index 000000000000..4193c808be8b
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-3/dom.txt
@@ -0,0 +1,3 @@
+| <!DOCTYPE svg>
+| <root>
+|   "test"
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-3/input.xml b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-3/input.xml
new file mode 100644
index 000000000000..eb679de85898
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-3/input.xml
@@ -0,0 +1,6 @@
+<!DOCTYPE svg [
+    <!ENTITY open-hatch
+            PUBLIC "-//Textuality//TEXT Standard open-hatch boilerplate//EN"
+            "http://www.textuality.com/boilerplate/OpenHatch.xml">
+]>
+<root>test</root>
\ No newline at end of file
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-3/output.json b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-3/output.json
new file mode 100644
index 000000000000..0f5319765afa
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-3/output.json
@@ -0,0 +1,44 @@
+{
+  "type": "Document",
+  "span": {
+    "start": 1,
+    "end": 205,
+    "ctxt": 0
+  },
+  "children": [
+    {
+      "type": "DocumentType",
+      "span": {
+        "start": 1,
+        "end": 187,
+        "ctxt": 0
+      },
+      "name": "svg",
+      "publicId": null,
+      "systemId": null,
+      "raw": "<!DOCTYPE svg [\n    <!ENTITY open-hatch\n            PUBLIC \"-//Textuality//TEXT Standard open-hatch boilerplate//EN\"\n            \"http://www.textuality.com/boilerplate/OpenHatch.xml\">\n]>"
+    },
+    {
+      "type": "Element",
+      "span": {
+        "start": 188,
+        "end": 205,
+        "ctxt": 0
+      },
+      "tagName": "root",
+      "attributes": [],
+      "children": [
+        {
+          "type": "Text",
+          "span": {
+            "start": 194,
+            "end": 198,
+            "ctxt": 0
+          },
+          "data": "test",
+          "raw": "test"
+        }
+      ]
+    }
+  ]
+}
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-3/span.swc-stderr b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-3/span.swc-stderr
new file mode 100644
index 000000000000..1b357f51d5ff
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-3/span.swc-stderr
@@ -0,0 +1,58 @@
+
+  x Document
+   ,-[$DIR/tests/fixture/document_type/internal_subset-3/input.xml:1:1]
+ 1 | ,-> <!DOCTYPE svg [
+ 2 | |       <!ENTITY open-hatch
+ 3 | |               PUBLIC "-//Textuality//TEXT Standard open-hatch boilerplate//EN"
+ 4 | |               "http://www.textuality.com/boilerplate/OpenHatch.xml">
+ 5 | |   ]>
+ 6 | `-> <root>test</root>
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/internal_subset-3/input.xml:1:1]
+ 1 | ,-> <!DOCTYPE svg [
+ 2 | |       <!ENTITY open-hatch
+ 3 | |               PUBLIC "-//Textuality//TEXT Standard open-hatch boilerplate//EN"
+ 4 | |               "http://www.textuality.com/boilerplate/OpenHatch.xml">
+ 5 | `-> ]>
+ 6 |     <root>test</root>
+   `----
+
+  x DocumentType
+   ,-[$DIR/tests/fixture/document_type/internal_subset-3/input.xml:1:1]
+ 1 | ,-> <!DOCTYPE svg [
+ 2 | |       <!ENTITY open-hatch
+ 3 | |               PUBLIC "-//Textuality//TEXT Standard open-hatch boilerplate//EN"
+ 4 | |               "http://www.textuality.com/boilerplate/OpenHatch.xml">
+ 5 | `-> ]>
+ 6 |     <root>test</root>
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/internal_subset-3/input.xml:5:1]
+ 5 | ]>
+ 6 | <root>test</root>
+   : ^^^^^^^^^^^^^^^^^
+   `----
+
+  x Element
+   ,-[$DIR/tests/fixture/document_type/internal_subset-3/input.xml:5:1]
+ 5 | ]>
+ 6 | <root>test</root>
+   : ^^^^^^^^^^^^^^^^^
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/internal_subset-3/input.xml:5:1]
+ 5 | ]>
+ 6 | <root>test</root>
+   :       ^^^^
+   `----
+
+  x Text
+   ,-[$DIR/tests/fixture/document_type/internal_subset-3/input.xml:5:1]
+ 5 | ]>
+ 6 | <root>test</root>
+   :       ^^^^
+   `----
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-4/dom.txt b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-4/dom.txt
new file mode 100644
index 000000000000..4193c808be8b
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-4/dom.txt
@@ -0,0 +1,3 @@
+| <!DOCTYPE svg>
+| <root>
+|   "test"
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-4/input.xml b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-4/input.xml
new file mode 100644
index 000000000000..40f2f256b194
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-4/input.xml
@@ -0,0 +1,4 @@
+<!DOCTYPE svg [
+    <!ENTITY hatch-pic SYSTEM "../grafix/OpenHatch.gif" NDATA gif >
+]>
+<root>test</root>
\ No newline at end of file
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-4/output.json b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-4/output.json
new file mode 100644
index 000000000000..26baff560ccd
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-4/output.json
@@ -0,0 +1,44 @@
+{
+  "type": "Document",
+  "span": {
+    "start": 1,
+    "end": 105,
+    "ctxt": 0
+  },
+  "children": [
+    {
+      "type": "DocumentType",
+      "span": {
+        "start": 1,
+        "end": 87,
+        "ctxt": 0
+      },
+      "name": "svg",
+      "publicId": null,
+      "systemId": null,
+      "raw": "<!DOCTYPE svg [\n    <!ENTITY hatch-pic SYSTEM \"../grafix/OpenHatch.gif\" NDATA gif >\n]>"
+    },
+    {
+      "type": "Element",
+      "span": {
+        "start": 88,
+        "end": 105,
+        "ctxt": 0
+      },
+      "tagName": "root",
+      "attributes": [],
+      "children": [
+        {
+          "type": "Text",
+          "span": {
+            "start": 94,
+            "end": 98,
+            "ctxt": 0
+          },
+          "data": "test",
+          "raw": "test"
+        }
+      ]
+    }
+  ]
+}
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-4/span.swc-stderr b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-4/span.swc-stderr
new file mode 100644
index 000000000000..3534c5e0dc53
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-4/span.swc-stderr
@@ -0,0 +1,52 @@
+
+  x Document
+   ,-[$DIR/tests/fixture/document_type/internal_subset-4/input.xml:1:1]
+ 1 | ,-> <!DOCTYPE svg [
+ 2 | |       <!ENTITY hatch-pic SYSTEM "../grafix/OpenHatch.gif" NDATA gif >
+ 3 | |   ]>
+ 4 | `-> <root>test</root>
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/internal_subset-4/input.xml:1:1]
+ 1 | ,-> <!DOCTYPE svg [
+ 2 | |       <!ENTITY hatch-pic SYSTEM "../grafix/OpenHatch.gif" NDATA gif >
+ 3 | `-> ]>
+ 4 |     <root>test</root>
+   `----
+
+  x DocumentType
+   ,-[$DIR/tests/fixture/document_type/internal_subset-4/input.xml:1:1]
+ 1 | ,-> <!DOCTYPE svg [
+ 2 | |       <!ENTITY hatch-pic SYSTEM "../grafix/OpenHatch.gif" NDATA gif >
+ 3 | `-> ]>
+ 4 |     <root>test</root>
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/internal_subset-4/input.xml:3:1]
+ 3 | ]>
+ 4 | <root>test</root>
+   : ^^^^^^^^^^^^^^^^^
+   `----
+
+  x Element
+   ,-[$DIR/tests/fixture/document_type/internal_subset-4/input.xml:3:1]
+ 3 | ]>
+ 4 | <root>test</root>
+   : ^^^^^^^^^^^^^^^^^
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/internal_subset-4/input.xml:3:1]
+ 3 | ]>
+ 4 | <root>test</root>
+   :       ^^^^
+   `----
+
+  x Text
+   ,-[$DIR/tests/fixture/document_type/internal_subset-4/input.xml:3:1]
+ 3 | ]>
+ 4 | <root>test</root>
+   :       ^^^^
+   `----
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-5/dom.txt b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-5/dom.txt
new file mode 100644
index 000000000000..4193c808be8b
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-5/dom.txt
@@ -0,0 +1,3 @@
+| <!DOCTYPE svg>
+| <root>
+|   "test"
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-5/input.xml b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-5/input.xml
new file mode 100644
index 000000000000..5895dada5c65
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-5/input.xml
@@ -0,0 +1,7 @@
+<!DOCTYPE svg [
+    <!ELEMENT sgml ANY>
+    <!ENTITY ns_extend "http://ns.adobe.com/Extensibility/1.0/">
+    <!NOTATION example1SVG-rdf SYSTEM "example1.svg.rdf">
+    <!ATTLIST img data ENTITY #IMPLIED>
+]>
+<root>test</root>
\ No newline at end of file
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-5/output.json b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-5/output.json
new file mode 100644
index 000000000000..335e881351a3
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-5/output.json
@@ -0,0 +1,44 @@
+{
+  "type": "Document",
+  "span": {
+    "start": 1,
+    "end": 224,
+    "ctxt": 0
+  },
+  "children": [
+    {
+      "type": "DocumentType",
+      "span": {
+        "start": 1,
+        "end": 206,
+        "ctxt": 0
+      },
+      "name": "svg",
+      "publicId": null,
+      "systemId": null,
+      "raw": "<!DOCTYPE svg [\n    <!ELEMENT sgml ANY>\n    <!ENTITY ns_extend \"http://ns.adobe.com/Extensibility/1.0/\">\n    <!NOTATION example1SVG-rdf SYSTEM \"example1.svg.rdf\">\n    <!ATTLIST img data ENTITY #IMPLIED>\n]>"
+    },
+    {
+      "type": "Element",
+      "span": {
+        "start": 207,
+        "end": 224,
+        "ctxt": 0
+      },
+      "tagName": "root",
+      "attributes": [],
+      "children": [
+        {
+          "type": "Text",
+          "span": {
+            "start": 213,
+            "end": 217,
+            "ctxt": 0
+          },
+          "data": "test",
+          "raw": "test"
+        }
+      ]
+    }
+  ]
+}
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-5/span.swc-stderr b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-5/span.swc-stderr
new file mode 100644
index 000000000000..00db3dc990ce
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset-5/span.swc-stderr
@@ -0,0 +1,61 @@
+
+  x Document
+   ,-[$DIR/tests/fixture/document_type/internal_subset-5/input.xml:1:1]
+ 1 | ,-> <!DOCTYPE svg [
+ 2 | |       <!ELEMENT sgml ANY>
+ 3 | |       <!ENTITY ns_extend "http://ns.adobe.com/Extensibility/1.0/">
+ 4 | |       <!NOTATION example1SVG-rdf SYSTEM "example1.svg.rdf">
+ 5 | |       <!ATTLIST img data ENTITY #IMPLIED>
+ 6 | |   ]>
+ 7 | `-> <root>test</root>
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/internal_subset-5/input.xml:1:1]
+ 1 | ,-> <!DOCTYPE svg [
+ 2 | |       <!ELEMENT sgml ANY>
+ 3 | |       <!ENTITY ns_extend "http://ns.adobe.com/Extensibility/1.0/">
+ 4 | |       <!NOTATION example1SVG-rdf SYSTEM "example1.svg.rdf">
+ 5 | |       <!ATTLIST img data ENTITY #IMPLIED>
+ 6 | `-> ]>
+ 7 |     <root>test</root>
+   `----
+
+  x DocumentType
+   ,-[$DIR/tests/fixture/document_type/internal_subset-5/input.xml:1:1]
+ 1 | ,-> <!DOCTYPE svg [
+ 2 | |       <!ELEMENT sgml ANY>
+ 3 | |       <!ENTITY ns_extend "http://ns.adobe.com/Extensibility/1.0/">
+ 4 | |       <!NOTATION example1SVG-rdf SYSTEM "example1.svg.rdf">
+ 5 | |       <!ATTLIST img data ENTITY #IMPLIED>
+ 6 | `-> ]>
+ 7 |     <root>test</root>
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/internal_subset-5/input.xml:6:1]
+ 6 | ]>
+ 7 | <root>test</root>
+   : ^^^^^^^^^^^^^^^^^
+   `----
+
+  x Element
+   ,-[$DIR/tests/fixture/document_type/internal_subset-5/input.xml:6:1]
+ 6 | ]>
+ 7 | <root>test</root>
+   : ^^^^^^^^^^^^^^^^^
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/internal_subset-5/input.xml:6:1]
+ 6 | ]>
+ 7 | <root>test</root>
+   :       ^^^^
+   `----
+
+  x Text
+   ,-[$DIR/tests/fixture/document_type/internal_subset-5/input.xml:6:1]
+ 6 | ]>
+ 7 | <root>test</root>
+   :       ^^^^
+   `----
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset/dom.txt b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset/dom.txt
new file mode 100644
index 000000000000..4b36c15b4e4d
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset/dom.txt
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes">
+| <!DOCTYPE people_list>
+| <people_list>
+|   "
+    "
+|   <person>
+|     "
+        "
+|     <name>
+|       "Fred Bloggs"
+|     "
+        "
+|     <birthdate>
+|       "2008-11-27"
+|     "
+        "
+|     <gender>
+|       "Male"
+|     "
+    "
+|   "
+"
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset/input.xml b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset/input.xml
new file mode 100644
index 000000000000..a4e36cb5a0db
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset/input.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<!DOCTYPE people_list [
+<!ELEMENT people_list (person*)>
+<!ELEMENT person (name, birthdate?, gender?, socialsecuritynumber?)>
+<!ELEMENT name (#PCDATA)>
+<!ELEMENT birthdate (#PCDATA)>
+<!ELEMENT gender (#PCDATA)>
+<!ELEMENT socialsecuritynumber (#PCDATA)>
+]>
+<people_list>
+    <person>
+        <name>Fred Bloggs</name>
+        <birthdate>2008-11-27</birthdate>
+        <gender>Male</gender>
+    </person>
+</people_list>
\ No newline at end of file
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset/output.json b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset/output.json
new file mode 100644
index 000000000000..c78e9292861d
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset/output.json
@@ -0,0 +1,182 @@
+{
+  "type": "Document",
+  "span": {
+    "start": 1,
+    "end": 473,
+    "ctxt": 0
+  },
+  "children": [
+    {
+      "type": "ProcessingInstruction",
+      "span": {
+        "start": 1,
+        "end": 56,
+        "ctxt": 0
+      },
+      "target": "xml",
+      "data": "version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\""
+    },
+    {
+      "type": "DocumentType",
+      "span": {
+        "start": 57,
+        "end": 312,
+        "ctxt": 0
+      },
+      "name": "people_list",
+      "publicId": null,
+      "systemId": null,
+      "raw": "<!DOCTYPE people_list [\n<!ELEMENT people_list (person*)>\n<!ELEMENT person (name, birthdate?, gender?, socialsecuritynumber?)>\n<!ELEMENT name (#PCDATA)>\n<!ELEMENT birthdate (#PCDATA)>\n<!ELEMENT gender (#PCDATA)>\n<!ELEMENT socialsecuritynumber (#PCDATA)>\n]>"
+    },
+    {
+      "type": "Element",
+      "span": {
+        "start": 313,
+        "end": 473,
+        "ctxt": 0
+      },
+      "tagName": "people_list",
+      "attributes": [],
+      "children": [
+        {
+          "type": "Text",
+          "span": {
+            "start": 326,
+            "end": 331,
+            "ctxt": 0
+          },
+          "data": "\n    ",
+          "raw": "\n    "
+        },
+        {
+          "type": "Element",
+          "span": {
+            "start": 331,
+            "end": 458,
+            "ctxt": 0
+          },
+          "tagName": "person",
+          "attributes": [],
+          "children": [
+            {
+              "type": "Text",
+              "span": {
+                "start": 339,
+                "end": 348,
+                "ctxt": 0
+              },
+              "data": "\n        ",
+              "raw": "\n        "
+            },
+            {
+              "type": "Element",
+              "span": {
+                "start": 348,
+                "end": 372,
+                "ctxt": 0
+              },
+              "tagName": "name",
+              "attributes": [],
+              "children": [
+                {
+                  "type": "Text",
+                  "span": {
+                    "start": 354,
+                    "end": 365,
+                    "ctxt": 0
+                  },
+                  "data": "Fred Bloggs",
+                  "raw": "Fred Bloggs"
+                }
+              ]
+            },
+            {
+              "type": "Text",
+              "span": {
+                "start": 372,
+                "end": 381,
+                "ctxt": 0
+              },
+              "data": "\n        ",
+              "raw": "\n        "
+            },
+            {
+              "type": "Element",
+              "span": {
+                "start": 381,
+                "end": 414,
+                "ctxt": 0
+              },
+              "tagName": "birthdate",
+              "attributes": [],
+              "children": [
+                {
+                  "type": "Text",
+                  "span": {
+                    "start": 392,
+                    "end": 402,
+                    "ctxt": 0
+                  },
+                  "data": "2008-11-27",
+                  "raw": "2008-11-27"
+                }
+              ]
+            },
+            {
+              "type": "Text",
+              "span": {
+                "start": 414,
+                "end": 423,
+                "ctxt": 0
+              },
+              "data": "\n        ",
+              "raw": "\n        "
+            },
+            {
+              "type": "Element",
+              "span": {
+                "start": 423,
+                "end": 444,
+                "ctxt": 0
+              },
+              "tagName": "gender",
+              "attributes": [],
+              "children": [
+                {
+                  "type": "Text",
+                  "span": {
+                    "start": 431,
+                    "end": 435,
+                    "ctxt": 0
+                  },
+                  "data": "Male",
+                  "raw": "Male"
+                }
+              ]
+            },
+            {
+              "type": "Text",
+              "span": {
+                "start": 444,
+                "end": 449,
+                "ctxt": 0
+              },
+              "data": "\n    ",
+              "raw": "\n    "
+            }
+          ]
+        },
+        {
+          "type": "Text",
+          "span": {
+            "start": 458,
+            "end": 459,
+            "ctxt": 0
+          },
+          "data": "\n",
+          "raw": "\n"
+        }
+      ]
+    }
+  ]
+}
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset/span.swc-stderr b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset/span.swc-stderr
new file mode 100644
index 000000000000..cfec1ed5cc7e
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset/span.swc-stderr
@@ -0,0 +1,300 @@
+
+  x Document
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:1:1]
+  1 | ,-> <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+  2 | |   <!DOCTYPE people_list [
+  3 | |   <!ELEMENT people_list (person*)>
+  4 | |   <!ELEMENT person (name, birthdate?, gender?, socialsecuritynumber?)>
+  5 | |   <!ELEMENT name (#PCDATA)>
+  6 | |   <!ELEMENT birthdate (#PCDATA)>
+  7 | |   <!ELEMENT gender (#PCDATA)>
+  8 | |   <!ELEMENT socialsecuritynumber (#PCDATA)>
+  9 | |   ]>
+ 10 | |   <people_list>
+ 11 | |       <person>
+ 12 | |           <name>Fred Bloggs</name>
+ 13 | |           <birthdate>2008-11-27</birthdate>
+ 14 | |           <gender>Male</gender>
+ 15 | |       </person>
+ 16 | `-> </people_list>
+    `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:1:1]
+ 1 | <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ 2 | <!DOCTYPE people_list [
+   `----
+
+  x ProcessingInstruction
+   ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:1:1]
+ 1 | <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ 2 | <!DOCTYPE people_list [
+   `----
+
+  x Child
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:1:1]
+  1 |     <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+  2 | ,-> <!DOCTYPE people_list [
+  3 | |   <!ELEMENT people_list (person*)>
+  4 | |   <!ELEMENT person (name, birthdate?, gender?, socialsecuritynumber?)>
+  5 | |   <!ELEMENT name (#PCDATA)>
+  6 | |   <!ELEMENT birthdate (#PCDATA)>
+  7 | |   <!ELEMENT gender (#PCDATA)>
+  8 | |   <!ELEMENT socialsecuritynumber (#PCDATA)>
+  9 | `-> ]>
+ 10 |     <people_list>
+    `----
+
+  x DocumentType
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:1:1]
+  1 |     <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+  2 | ,-> <!DOCTYPE people_list [
+  3 | |   <!ELEMENT people_list (person*)>
+  4 | |   <!ELEMENT person (name, birthdate?, gender?, socialsecuritynumber?)>
+  5 | |   <!ELEMENT name (#PCDATA)>
+  6 | |   <!ELEMENT birthdate (#PCDATA)>
+  7 | |   <!ELEMENT gender (#PCDATA)>
+  8 | |   <!ELEMENT socialsecuritynumber (#PCDATA)>
+  9 | `-> ]>
+ 10 |     <people_list>
+    `----
+
+  x Child
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:9:1]
+  9 |     ]>
+ 10 | ,-> <people_list>
+ 11 | |       <person>
+ 12 | |           <name>Fred Bloggs</name>
+ 13 | |           <birthdate>2008-11-27</birthdate>
+ 14 | |           <gender>Male</gender>
+ 15 | |       </person>
+ 16 | `-> </people_list>
+    `----
+
+  x Element
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:9:1]
+  9 |     ]>
+ 10 | ,-> <people_list>
+ 11 | |       <person>
+ 12 | |           <name>Fred Bloggs</name>
+ 13 | |           <birthdate>2008-11-27</birthdate>
+ 14 | |           <gender>Male</gender>
+ 15 | |       </person>
+ 16 | `-> </people_list>
+    `----
+
+  x Child
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:9:1]
+  9 |     ]>
+ 10 | ,-> <people_list>
+ 11 | `->     <person>
+ 12 |             <name>Fred Bloggs</name>
+    `----
+
+  x Text
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:9:1]
+  9 |     ]>
+ 10 | ,-> <people_list>
+ 11 | `->     <person>
+ 12 |             <name>Fred Bloggs</name>
+    `----
+
+  x Child
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:10:1]
+ 10 |     <people_list>
+ 11 | ,->     <person>
+ 12 | |           <name>Fred Bloggs</name>
+ 13 | |           <birthdate>2008-11-27</birthdate>
+ 14 | |           <gender>Male</gender>
+ 15 | `->     </person>
+ 16 |     </people_list>
+    `----
+
+  x Element
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:10:1]
+ 10 |     <people_list>
+ 11 | ,->     <person>
+ 12 | |           <name>Fred Bloggs</name>
+ 13 | |           <birthdate>2008-11-27</birthdate>
+ 14 | |           <gender>Male</gender>
+ 15 | `->     </person>
+ 16 |     </people_list>
+    `----
+
+  x Child
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:10:1]
+ 10 |     <people_list>
+ 11 | ,->     <person>
+ 12 | `->         <name>Fred Bloggs</name>
+ 13 |             <birthdate>2008-11-27</birthdate>
+    `----
+
+  x Text
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:10:1]
+ 10 |     <people_list>
+ 11 | ,->     <person>
+ 12 | `->         <name>Fred Bloggs</name>
+ 13 |             <birthdate>2008-11-27</birthdate>
+    `----
+
+  x Child
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:11:1]
+ 11 |     <person>
+ 12 |         <name>Fred Bloggs</name>
+    :         ^^^^^^^^^^^^^^^^^^^^^^^^
+ 13 |         <birthdate>2008-11-27</birthdate>
+    `----
+
+  x Element
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:11:1]
+ 11 |     <person>
+ 12 |         <name>Fred Bloggs</name>
+    :         ^^^^^^^^^^^^^^^^^^^^^^^^
+ 13 |         <birthdate>2008-11-27</birthdate>
+    `----
+
+  x Child
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:11:1]
+ 11 |     <person>
+ 12 |         <name>Fred Bloggs</name>
+    :               ^^^^^^^^^^^
+ 13 |         <birthdate>2008-11-27</birthdate>
+    `----
+
+  x Text
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:11:1]
+ 11 |     <person>
+ 12 |         <name>Fred Bloggs</name>
+    :               ^^^^^^^^^^^
+ 13 |         <birthdate>2008-11-27</birthdate>
+    `----
+
+  x Child
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:11:1]
+ 11 |         <person>
+ 12 | ,->         <name>Fred Bloggs</name>
+ 13 | `->         <birthdate>2008-11-27</birthdate>
+ 14 |             <gender>Male</gender>
+    `----
+
+  x Text
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:11:1]
+ 11 |         <person>
+ 12 | ,->         <name>Fred Bloggs</name>
+ 13 | `->         <birthdate>2008-11-27</birthdate>
+ 14 |             <gender>Male</gender>
+    `----
+
+  x Child
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:12:1]
+ 12 |         <name>Fred Bloggs</name>
+ 13 |         <birthdate>2008-11-27</birthdate>
+    :         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ 14 |         <gender>Male</gender>
+    `----
+
+  x Element
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:12:1]
+ 12 |         <name>Fred Bloggs</name>
+ 13 |         <birthdate>2008-11-27</birthdate>
+    :         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ 14 |         <gender>Male</gender>
+    `----
+
+  x Child
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:12:1]
+ 12 |         <name>Fred Bloggs</name>
+ 13 |         <birthdate>2008-11-27</birthdate>
+    :                    ^^^^^^^^^^
+ 14 |         <gender>Male</gender>
+    `----
+
+  x Text
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:12:1]
+ 12 |         <name>Fred Bloggs</name>
+ 13 |         <birthdate>2008-11-27</birthdate>
+    :                    ^^^^^^^^^^
+ 14 |         <gender>Male</gender>
+    `----
+
+  x Child
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:12:1]
+ 12 |             <name>Fred Bloggs</name>
+ 13 | ,->         <birthdate>2008-11-27</birthdate>
+ 14 | `->         <gender>Male</gender>
+ 15 |         </person>
+    `----
+
+  x Text
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:12:1]
+ 12 |             <name>Fred Bloggs</name>
+ 13 | ,->         <birthdate>2008-11-27</birthdate>
+ 14 | `->         <gender>Male</gender>
+ 15 |         </person>
+    `----
+
+  x Child
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:13:1]
+ 13 |         <birthdate>2008-11-27</birthdate>
+ 14 |         <gender>Male</gender>
+    :         ^^^^^^^^^^^^^^^^^^^^^
+ 15 |     </person>
+    `----
+
+  x Element
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:13:1]
+ 13 |         <birthdate>2008-11-27</birthdate>
+ 14 |         <gender>Male</gender>
+    :         ^^^^^^^^^^^^^^^^^^^^^
+ 15 |     </person>
+    `----
+
+  x Child
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:13:1]
+ 13 |         <birthdate>2008-11-27</birthdate>
+ 14 |         <gender>Male</gender>
+    :                 ^^^^
+ 15 |     </person>
+    `----
+
+  x Text
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:13:1]
+ 13 |         <birthdate>2008-11-27</birthdate>
+ 14 |         <gender>Male</gender>
+    :                 ^^^^
+ 15 |     </person>
+    `----
+
+  x Child
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:13:1]
+ 13 |             <birthdate>2008-11-27</birthdate>
+ 14 | ,->         <gender>Male</gender>
+ 15 | `->     </person>
+ 16 |     </people_list>
+    `----
+
+  x Text
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:13:1]
+ 13 |             <birthdate>2008-11-27</birthdate>
+ 14 | ,->         <gender>Male</gender>
+ 15 | `->     </person>
+ 16 |     </people_list>
+    `----
+
+  x Child
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:14:1]
+ 14 |         <gender>Male</gender>
+ 15 |     </person>
+    :              ^
+ 16 | </people_list>
+    `----
+
+  x Text
+    ,-[$DIR/tests/fixture/document_type/internal_subset/input.xml:14:1]
+ 14 |         <gender>Male</gender>
+ 15 |     </person>
+    :              ^
+ 16 | </people_list>
+    `----
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-1/dom.txt b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-1/dom.txt
new file mode 100644
index 000000000000..aae50a1e17f8
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-1/dom.txt
@@ -0,0 +1,3 @@
+| <!DOCTYPE greeting>
+| <root>
+|   "test"
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-1/input.xml b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-1/input.xml
new file mode 100644
index 000000000000..c15ab170f56e
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-1/input.xml
@@ -0,0 +1,2 @@
+<!DOCTYPE greeting [] >
+<root>test</root>
\ No newline at end of file
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-1/output.json b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-1/output.json
new file mode 100644
index 000000000000..87fba53ed95b
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-1/output.json
@@ -0,0 +1,44 @@
+{
+  "type": "Document",
+  "span": {
+    "start": 1,
+    "end": 42,
+    "ctxt": 0
+  },
+  "children": [
+    {
+      "type": "DocumentType",
+      "span": {
+        "start": 1,
+        "end": 24,
+        "ctxt": 0
+      },
+      "name": "greeting",
+      "publicId": null,
+      "systemId": null,
+      "raw": "<!DOCTYPE greeting [] >"
+    },
+    {
+      "type": "Element",
+      "span": {
+        "start": 25,
+        "end": 42,
+        "ctxt": 0
+      },
+      "tagName": "root",
+      "attributes": [],
+      "children": [
+        {
+          "type": "Text",
+          "span": {
+            "start": 31,
+            "end": 35,
+            "ctxt": 0
+          },
+          "data": "test",
+          "raw": "test"
+        }
+      ]
+    }
+  ]
+}
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-1/span.swc-stderr b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-1/span.swc-stderr
new file mode 100644
index 000000000000..e1777cdb6898
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-1/span.swc-stderr
@@ -0,0 +1,48 @@
+
+  x Document
+   ,-[$DIR/tests/fixture/document_type/internal_subset_empty-1/input.xml:1:1]
+ 1 | ,-> <!DOCTYPE greeting [] >
+ 2 | `-> <root>test</root>
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/internal_subset_empty-1/input.xml:1:1]
+ 1 | <!DOCTYPE greeting [] >
+   : ^^^^^^^^^^^^^^^^^^^^^^^
+ 2 | <root>test</root>
+   `----
+
+  x DocumentType
+   ,-[$DIR/tests/fixture/document_type/internal_subset_empty-1/input.xml:1:1]
+ 1 | <!DOCTYPE greeting [] >
+   : ^^^^^^^^^^^^^^^^^^^^^^^
+ 2 | <root>test</root>
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/internal_subset_empty-1/input.xml:1:1]
+ 1 | <!DOCTYPE greeting [] >
+ 2 | <root>test</root>
+   : ^^^^^^^^^^^^^^^^^
+   `----
+
+  x Element
+   ,-[$DIR/tests/fixture/document_type/internal_subset_empty-1/input.xml:1:1]
+ 1 | <!DOCTYPE greeting [] >
+ 2 | <root>test</root>
+   : ^^^^^^^^^^^^^^^^^
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/internal_subset_empty-1/input.xml:1:1]
+ 1 | <!DOCTYPE greeting [] >
+ 2 | <root>test</root>
+   :       ^^^^
+   `----
+
+  x Text
+   ,-[$DIR/tests/fixture/document_type/internal_subset_empty-1/input.xml:1:1]
+ 1 | <!DOCTYPE greeting [] >
+ 2 | <root>test</root>
+   :       ^^^^
+   `----
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-2/dom.txt b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-2/dom.txt
new file mode 100644
index 000000000000..aae50a1e17f8
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-2/dom.txt
@@ -0,0 +1,3 @@
+| <!DOCTYPE greeting>
+| <root>
+|   "test"
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-2/input.xml b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-2/input.xml
new file mode 100644
index 000000000000..58e6e348a1e5
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-2/input.xml
@@ -0,0 +1,2 @@
+<!DOCTYPE greeting [ ] >
+<root>test</root>
\ No newline at end of file
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-2/output.json b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-2/output.json
new file mode 100644
index 000000000000..9737f7271551
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-2/output.json
@@ -0,0 +1,44 @@
+{
+  "type": "Document",
+  "span": {
+    "start": 1,
+    "end": 43,
+    "ctxt": 0
+  },
+  "children": [
+    {
+      "type": "DocumentType",
+      "span": {
+        "start": 1,
+        "end": 25,
+        "ctxt": 0
+      },
+      "name": "greeting",
+      "publicId": null,
+      "systemId": null,
+      "raw": "<!DOCTYPE greeting [ ] >"
+    },
+    {
+      "type": "Element",
+      "span": {
+        "start": 26,
+        "end": 43,
+        "ctxt": 0
+      },
+      "tagName": "root",
+      "attributes": [],
+      "children": [
+        {
+          "type": "Text",
+          "span": {
+            "start": 32,
+            "end": 36,
+            "ctxt": 0
+          },
+          "data": "test",
+          "raw": "test"
+        }
+      ]
+    }
+  ]
+}
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-2/span.swc-stderr b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-2/span.swc-stderr
new file mode 100644
index 000000000000..0cf9c7567d49
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty-2/span.swc-stderr
@@ -0,0 +1,48 @@
+
+  x Document
+   ,-[$DIR/tests/fixture/document_type/internal_subset_empty-2/input.xml:1:1]
+ 1 | ,-> <!DOCTYPE greeting [ ] >
+ 2 | `-> <root>test</root>
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/internal_subset_empty-2/input.xml:1:1]
+ 1 | <!DOCTYPE greeting [ ] >
+   : ^^^^^^^^^^^^^^^^^^^^^^^^
+ 2 | <root>test</root>
+   `----
+
+  x DocumentType
+   ,-[$DIR/tests/fixture/document_type/internal_subset_empty-2/input.xml:1:1]
+ 1 | <!DOCTYPE greeting [ ] >
+   : ^^^^^^^^^^^^^^^^^^^^^^^^
+ 2 | <root>test</root>
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/internal_subset_empty-2/input.xml:1:1]
+ 1 | <!DOCTYPE greeting [ ] >
+ 2 | <root>test</root>
+   : ^^^^^^^^^^^^^^^^^
+   `----
+
+  x Element
+   ,-[$DIR/tests/fixture/document_type/internal_subset_empty-2/input.xml:1:1]
+ 1 | <!DOCTYPE greeting [ ] >
+ 2 | <root>test</root>
+   : ^^^^^^^^^^^^^^^^^
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/internal_subset_empty-2/input.xml:1:1]
+ 1 | <!DOCTYPE greeting [ ] >
+ 2 | <root>test</root>
+   :       ^^^^
+   `----
+
+  x Text
+   ,-[$DIR/tests/fixture/document_type/internal_subset_empty-2/input.xml:1:1]
+ 1 | <!DOCTYPE greeting [ ] >
+ 2 | <root>test</root>
+   :       ^^^^
+   `----
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty/dom.txt b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty/dom.txt
new file mode 100644
index 000000000000..aae50a1e17f8
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty/dom.txt
@@ -0,0 +1,3 @@
+| <!DOCTYPE greeting>
+| <root>
+|   "test"
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty/input.xml b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty/input.xml
new file mode 100644
index 000000000000..2c782f6c5546
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty/input.xml
@@ -0,0 +1,2 @@
+<!DOCTYPE greeting []>
+<root>test</root>
\ No newline at end of file
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty/output.json b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty/output.json
new file mode 100644
index 000000000000..57967fcb5572
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty/output.json
@@ -0,0 +1,44 @@
+{
+  "type": "Document",
+  "span": {
+    "start": 1,
+    "end": 41,
+    "ctxt": 0
+  },
+  "children": [
+    {
+      "type": "DocumentType",
+      "span": {
+        "start": 1,
+        "end": 23,
+        "ctxt": 0
+      },
+      "name": "greeting",
+      "publicId": null,
+      "systemId": null,
+      "raw": "<!DOCTYPE greeting []>"
+    },
+    {
+      "type": "Element",
+      "span": {
+        "start": 24,
+        "end": 41,
+        "ctxt": 0
+      },
+      "tagName": "root",
+      "attributes": [],
+      "children": [
+        {
+          "type": "Text",
+          "span": {
+            "start": 30,
+            "end": 34,
+            "ctxt": 0
+          },
+          "data": "test",
+          "raw": "test"
+        }
+      ]
+    }
+  ]
+}
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty/span.swc-stderr b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty/span.swc-stderr
new file mode 100644
index 000000000000..a687fe18390b
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/internal_subset_empty/span.swc-stderr
@@ -0,0 +1,48 @@
+
+  x Document
+   ,-[$DIR/tests/fixture/document_type/internal_subset_empty/input.xml:1:1]
+ 1 | ,-> <!DOCTYPE greeting []>
+ 2 | `-> <root>test</root>
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/internal_subset_empty/input.xml:1:1]
+ 1 | <!DOCTYPE greeting []>
+   : ^^^^^^^^^^^^^^^^^^^^^^
+ 2 | <root>test</root>
+   `----
+
+  x DocumentType
+   ,-[$DIR/tests/fixture/document_type/internal_subset_empty/input.xml:1:1]
+ 1 | <!DOCTYPE greeting []>
+   : ^^^^^^^^^^^^^^^^^^^^^^
+ 2 | <root>test</root>
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/internal_subset_empty/input.xml:1:1]
+ 1 | <!DOCTYPE greeting []>
+ 2 | <root>test</root>
+   : ^^^^^^^^^^^^^^^^^
+   `----
+
+  x Element
+   ,-[$DIR/tests/fixture/document_type/internal_subset_empty/input.xml:1:1]
+ 1 | <!DOCTYPE greeting []>
+ 2 | <root>test</root>
+   : ^^^^^^^^^^^^^^^^^
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/internal_subset_empty/input.xml:1:1]
+ 1 | <!DOCTYPE greeting []>
+ 2 | <root>test</root>
+   :       ^^^^
+   `----
+
+  x Text
+   ,-[$DIR/tests/fixture/document_type/internal_subset_empty/input.xml:1:1]
+ 1 | <!DOCTYPE greeting []>
+ 2 | <root>test</root>
+   :       ^^^^
+   `----
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/only-name/dom.txt b/crates/swc_xml_parser/tests/fixture/document_type/only-name/dom.txt
new file mode 100644
index 000000000000..aae50a1e17f8
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/only-name/dom.txt
@@ -0,0 +1,3 @@
+| <!DOCTYPE greeting>
+| <root>
+|   "test"
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/only-name/input.xml b/crates/swc_xml_parser/tests/fixture/document_type/only-name/input.xml
new file mode 100644
index 000000000000..388ea4c8c765
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/only-name/input.xml
@@ -0,0 +1,2 @@
+<!DOCTYPE greeting>
+<root>test</root>
\ No newline at end of file
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/only-name/output.json b/crates/swc_xml_parser/tests/fixture/document_type/only-name/output.json
new file mode 100644
index 000000000000..b40382ca18d7
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/only-name/output.json
@@ -0,0 +1,44 @@
+{
+  "type": "Document",
+  "span": {
+    "start": 1,
+    "end": 38,
+    "ctxt": 0
+  },
+  "children": [
+    {
+      "type": "DocumentType",
+      "span": {
+        "start": 1,
+        "end": 20,
+        "ctxt": 0
+      },
+      "name": "greeting",
+      "publicId": null,
+      "systemId": null,
+      "raw": "<!DOCTYPE greeting"
+    },
+    {
+      "type": "Element",
+      "span": {
+        "start": 21,
+        "end": 38,
+        "ctxt": 0
+      },
+      "tagName": "root",
+      "attributes": [],
+      "children": [
+        {
+          "type": "Text",
+          "span": {
+            "start": 27,
+            "end": 31,
+            "ctxt": 0
+          },
+          "data": "test",
+          "raw": "test"
+        }
+      ]
+    }
+  ]
+}
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/only-name/span.swc-stderr b/crates/swc_xml_parser/tests/fixture/document_type/only-name/span.swc-stderr
new file mode 100644
index 000000000000..98adcb35045a
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/only-name/span.swc-stderr
@@ -0,0 +1,48 @@
+
+  x Document
+   ,-[$DIR/tests/fixture/document_type/only-name/input.xml:1:1]
+ 1 | ,-> <!DOCTYPE greeting>
+ 2 | `-> <root>test</root>
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/only-name/input.xml:1:1]
+ 1 | <!DOCTYPE greeting>
+   : ^^^^^^^^^^^^^^^^^^^
+ 2 | <root>test</root>
+   `----
+
+  x DocumentType
+   ,-[$DIR/tests/fixture/document_type/only-name/input.xml:1:1]
+ 1 | <!DOCTYPE greeting>
+   : ^^^^^^^^^^^^^^^^^^^
+ 2 | <root>test</root>
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/only-name/input.xml:1:1]
+ 1 | <!DOCTYPE greeting>
+ 2 | <root>test</root>
+   : ^^^^^^^^^^^^^^^^^
+   `----
+
+  x Element
+   ,-[$DIR/tests/fixture/document_type/only-name/input.xml:1:1]
+ 1 | <!DOCTYPE greeting>
+ 2 | <root>test</root>
+   : ^^^^^^^^^^^^^^^^^
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/only-name/input.xml:1:1]
+ 1 | <!DOCTYPE greeting>
+ 2 | <root>test</root>
+   :       ^^^^
+   `----
+
+  x Text
+   ,-[$DIR/tests/fixture/document_type/only-name/input.xml:1:1]
+ 1 | <!DOCTYPE greeting>
+ 2 | <root>test</root>
+   :       ^^^^
+   `----
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/public_id-1/dom.txt b/crates/swc_xml_parser/tests/fixture/document_type/public_id-1/dom.txt
new file mode 100644
index 000000000000..7fb8e46f849c
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/public_id-1/dom.txt
@@ -0,0 +1,3 @@
+| <!DOCTYPE greeting "hello.dtd" "goodbye.dtd">
+| <root>
+|   "test"
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/public_id-1/input.xml b/crates/swc_xml_parser/tests/fixture/document_type/public_id-1/input.xml
new file mode 100644
index 000000000000..3c5a3cda1b6a
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/public_id-1/input.xml
@@ -0,0 +1,2 @@
+<!DOCTYPE greeting PUBLIC 'hello.dtd' 'goodbye.dtd'>
+<root>test</root>
\ No newline at end of file
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/public_id-1/output.json b/crates/swc_xml_parser/tests/fixture/document_type/public_id-1/output.json
new file mode 100644
index 000000000000..119df5ff8f71
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/public_id-1/output.json
@@ -0,0 +1,44 @@
+{
+  "type": "Document",
+  "span": {
+    "start": 1,
+    "end": 71,
+    "ctxt": 0
+  },
+  "children": [
+    {
+      "type": "DocumentType",
+      "span": {
+        "start": 1,
+        "end": 53,
+        "ctxt": 0
+      },
+      "name": "greeting",
+      "publicId": "hello.dtd",
+      "systemId": "goodbye.dtd",
+      "raw": "<!DOCTYPE greeting PUBLIC 'hello.dtd' 'goodbye.dtd'>"
+    },
+    {
+      "type": "Element",
+      "span": {
+        "start": 54,
+        "end": 71,
+        "ctxt": 0
+      },
+      "tagName": "root",
+      "attributes": [],
+      "children": [
+        {
+          "type": "Text",
+          "span": {
+            "start": 60,
+            "end": 64,
+            "ctxt": 0
+          },
+          "data": "test",
+          "raw": "test"
+        }
+      ]
+    }
+  ]
+}
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/public_id-1/span.swc-stderr b/crates/swc_xml_parser/tests/fixture/document_type/public_id-1/span.swc-stderr
new file mode 100644
index 000000000000..34ad64fcca9a
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/public_id-1/span.swc-stderr
@@ -0,0 +1,48 @@
+
+  x Document
+   ,-[$DIR/tests/fixture/document_type/public_id-1/input.xml:1:1]
+ 1 | ,-> <!DOCTYPE greeting PUBLIC 'hello.dtd' 'goodbye.dtd'>
+ 2 | `-> <root>test</root>
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/public_id-1/input.xml:1:1]
+ 1 | <!DOCTYPE greeting PUBLIC 'hello.dtd' 'goodbye.dtd'>
+   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ 2 | <root>test</root>
+   `----
+
+  x DocumentType
+   ,-[$DIR/tests/fixture/document_type/public_id-1/input.xml:1:1]
+ 1 | <!DOCTYPE greeting PUBLIC 'hello.dtd' 'goodbye.dtd'>
+   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ 2 | <root>test</root>
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/public_id-1/input.xml:1:1]
+ 1 | <!DOCTYPE greeting PUBLIC 'hello.dtd' 'goodbye.dtd'>
+ 2 | <root>test</root>
+   : ^^^^^^^^^^^^^^^^^
+   `----
+
+  x Element
+   ,-[$DIR/tests/fixture/document_type/public_id-1/input.xml:1:1]
+ 1 | <!DOCTYPE greeting PUBLIC 'hello.dtd' 'goodbye.dtd'>
+ 2 | <root>test</root>
+   : ^^^^^^^^^^^^^^^^^
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/public_id-1/input.xml:1:1]
+ 1 | <!DOCTYPE greeting PUBLIC 'hello.dtd' 'goodbye.dtd'>
+ 2 | <root>test</root>
+   :       ^^^^
+   `----
+
+  x Text
+   ,-[$DIR/tests/fixture/document_type/public_id-1/input.xml:1:1]
+ 1 | <!DOCTYPE greeting PUBLIC 'hello.dtd' 'goodbye.dtd'>
+ 2 | <root>test</root>
+   :       ^^^^
+   `----
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/public_id/dom.txt b/crates/swc_xml_parser/tests/fixture/document_type/public_id/dom.txt
new file mode 100644
index 000000000000..7fb8e46f849c
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/public_id/dom.txt
@@ -0,0 +1,3 @@
+| <!DOCTYPE greeting "hello.dtd" "goodbye.dtd">
+| <root>
+|   "test"
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/public_id/input.xml b/crates/swc_xml_parser/tests/fixture/document_type/public_id/input.xml
new file mode 100644
index 000000000000..5a5667486dbb
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/public_id/input.xml
@@ -0,0 +1,2 @@
+<!DOCTYPE greeting PUBLIC "hello.dtd" "goodbye.dtd">
+<root>test</root>
\ No newline at end of file
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/public_id/output.json b/crates/swc_xml_parser/tests/fixture/document_type/public_id/output.json
new file mode 100644
index 000000000000..be373e2559ae
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/public_id/output.json
@@ -0,0 +1,44 @@
+{
+  "type": "Document",
+  "span": {
+    "start": 1,
+    "end": 71,
+    "ctxt": 0
+  },
+  "children": [
+    {
+      "type": "DocumentType",
+      "span": {
+        "start": 1,
+        "end": 53,
+        "ctxt": 0
+      },
+      "name": "greeting",
+      "publicId": "hello.dtd",
+      "systemId": "goodbye.dtd",
+      "raw": "<!DOCTYPE greeting PUBLIC \"hello.dtd\" \"goodbye.dtd\">"
+    },
+    {
+      "type": "Element",
+      "span": {
+        "start": 54,
+        "end": 71,
+        "ctxt": 0
+      },
+      "tagName": "root",
+      "attributes": [],
+      "children": [
+        {
+          "type": "Text",
+          "span": {
+            "start": 60,
+            "end": 64,
+            "ctxt": 0
+          },
+          "data": "test",
+          "raw": "test"
+        }
+      ]
+    }
+  ]
+}
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/public_id/span.swc-stderr b/crates/swc_xml_parser/tests/fixture/document_type/public_id/span.swc-stderr
new file mode 100644
index 000000000000..32586d4d9438
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/public_id/span.swc-stderr
@@ -0,0 +1,48 @@
+
+  x Document
+   ,-[$DIR/tests/fixture/document_type/public_id/input.xml:1:1]
+ 1 | ,-> <!DOCTYPE greeting PUBLIC "hello.dtd" "goodbye.dtd">
+ 2 | `-> <root>test</root>
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/public_id/input.xml:1:1]
+ 1 | <!DOCTYPE greeting PUBLIC "hello.dtd" "goodbye.dtd">
+   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ 2 | <root>test</root>
+   `----
+
+  x DocumentType
+   ,-[$DIR/tests/fixture/document_type/public_id/input.xml:1:1]
+ 1 | <!DOCTYPE greeting PUBLIC "hello.dtd" "goodbye.dtd">
+   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ 2 | <root>test</root>
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/public_id/input.xml:1:1]
+ 1 | <!DOCTYPE greeting PUBLIC "hello.dtd" "goodbye.dtd">
+ 2 | <root>test</root>
+   : ^^^^^^^^^^^^^^^^^
+   `----
+
+  x Element
+   ,-[$DIR/tests/fixture/document_type/public_id/input.xml:1:1]
+ 1 | <!DOCTYPE greeting PUBLIC "hello.dtd" "goodbye.dtd">
+ 2 | <root>test</root>
+   : ^^^^^^^^^^^^^^^^^
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/public_id/input.xml:1:1]
+ 1 | <!DOCTYPE greeting PUBLIC "hello.dtd" "goodbye.dtd">
+ 2 | <root>test</root>
+   :       ^^^^
+   `----
+
+  x Text
+   ,-[$DIR/tests/fixture/document_type/public_id/input.xml:1:1]
+ 1 | <!DOCTYPE greeting PUBLIC "hello.dtd" "goodbye.dtd">
+ 2 | <root>test</root>
+   :       ^^^^
+   `----
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/system_id-1/dom.txt b/crates/swc_xml_parser/tests/fixture/document_type/system_id-1/dom.txt
new file mode 100644
index 000000000000..09d349bb8203
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/system_id-1/dom.txt
@@ -0,0 +1,3 @@
+| <!DOCTYPE greeting "" "hello.dtd">
+| <root>
+|   "Text"
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/system_id-1/input.xml b/crates/swc_xml_parser/tests/fixture/document_type/system_id-1/input.xml
new file mode 100644
index 000000000000..f24913bc18a2
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/system_id-1/input.xml
@@ -0,0 +1,2 @@
+<!DOCTYPE greeting SYSTEM 'hello.dtd'>
+<root>Text</root>
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/system_id-1/output.json b/crates/swc_xml_parser/tests/fixture/document_type/system_id-1/output.json
new file mode 100644
index 000000000000..cb5f6894c192
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/system_id-1/output.json
@@ -0,0 +1,44 @@
+{
+  "type": "Document",
+  "span": {
+    "start": 1,
+    "end": 58,
+    "ctxt": 0
+  },
+  "children": [
+    {
+      "type": "DocumentType",
+      "span": {
+        "start": 1,
+        "end": 39,
+        "ctxt": 0
+      },
+      "name": "greeting",
+      "publicId": null,
+      "systemId": "hello.dtd",
+      "raw": "<!DOCTYPE greeting SYSTEM 'hello.dtd'>"
+    },
+    {
+      "type": "Element",
+      "span": {
+        "start": 40,
+        "end": 57,
+        "ctxt": 0
+      },
+      "tagName": "root",
+      "attributes": [],
+      "children": [
+        {
+          "type": "Text",
+          "span": {
+            "start": 46,
+            "end": 50,
+            "ctxt": 0
+          },
+          "data": "Text",
+          "raw": "Text"
+        }
+      ]
+    }
+  ]
+}
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/system_id-1/span.swc-stderr b/crates/swc_xml_parser/tests/fixture/document_type/system_id-1/span.swc-stderr
new file mode 100644
index 000000000000..f7b46b59eeb3
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/system_id-1/span.swc-stderr
@@ -0,0 +1,48 @@
+
+  x Document
+   ,-[$DIR/tests/fixture/document_type/system_id-1/input.xml:1:1]
+ 1 | ,-> <!DOCTYPE greeting SYSTEM 'hello.dtd'>
+ 2 | `-> <root>Text</root>
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/system_id-1/input.xml:1:1]
+ 1 | <!DOCTYPE greeting SYSTEM 'hello.dtd'>
+   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ 2 | <root>Text</root>
+   `----
+
+  x DocumentType
+   ,-[$DIR/tests/fixture/document_type/system_id-1/input.xml:1:1]
+ 1 | <!DOCTYPE greeting SYSTEM 'hello.dtd'>
+   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ 2 | <root>Text</root>
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/system_id-1/input.xml:1:1]
+ 1 | <!DOCTYPE greeting SYSTEM 'hello.dtd'>
+ 2 | <root>Text</root>
+   : ^^^^^^^^^^^^^^^^^
+   `----
+
+  x Element
+   ,-[$DIR/tests/fixture/document_type/system_id-1/input.xml:1:1]
+ 1 | <!DOCTYPE greeting SYSTEM 'hello.dtd'>
+ 2 | <root>Text</root>
+   : ^^^^^^^^^^^^^^^^^
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/system_id-1/input.xml:1:1]
+ 1 | <!DOCTYPE greeting SYSTEM 'hello.dtd'>
+ 2 | <root>Text</root>
+   :       ^^^^
+   `----
+
+  x Text
+   ,-[$DIR/tests/fixture/document_type/system_id-1/input.xml:1:1]
+ 1 | <!DOCTYPE greeting SYSTEM 'hello.dtd'>
+ 2 | <root>Text</root>
+   :       ^^^^
+   `----
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/system_id/dom.txt b/crates/swc_xml_parser/tests/fixture/document_type/system_id/dom.txt
new file mode 100644
index 000000000000..09d349bb8203
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/system_id/dom.txt
@@ -0,0 +1,3 @@
+| <!DOCTYPE greeting "" "hello.dtd">
+| <root>
+|   "Text"
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/system_id/input.xml b/crates/swc_xml_parser/tests/fixture/document_type/system_id/input.xml
new file mode 100644
index 000000000000..6b9d7bcaf10e
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/system_id/input.xml
@@ -0,0 +1,2 @@
+<!DOCTYPE greeting SYSTEM "hello.dtd">
+<root>Text</root>
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/system_id/output.json b/crates/swc_xml_parser/tests/fixture/document_type/system_id/output.json
new file mode 100644
index 000000000000..9355fedb7ad4
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/system_id/output.json
@@ -0,0 +1,44 @@
+{
+  "type": "Document",
+  "span": {
+    "start": 1,
+    "end": 58,
+    "ctxt": 0
+  },
+  "children": [
+    {
+      "type": "DocumentType",
+      "span": {
+        "start": 1,
+        "end": 39,
+        "ctxt": 0
+      },
+      "name": "greeting",
+      "publicId": null,
+      "systemId": "hello.dtd",
+      "raw": "<!DOCTYPE greeting SYSTEM \"hello.dtd\">"
+    },
+    {
+      "type": "Element",
+      "span": {
+        "start": 40,
+        "end": 57,
+        "ctxt": 0
+      },
+      "tagName": "root",
+      "attributes": [],
+      "children": [
+        {
+          "type": "Text",
+          "span": {
+            "start": 46,
+            "end": 50,
+            "ctxt": 0
+          },
+          "data": "Text",
+          "raw": "Text"
+        }
+      ]
+    }
+  ]
+}
diff --git a/crates/swc_xml_parser/tests/fixture/document_type/system_id/span.swc-stderr b/crates/swc_xml_parser/tests/fixture/document_type/system_id/span.swc-stderr
new file mode 100644
index 000000000000..a4b516fa5beb
--- /dev/null
+++ b/crates/swc_xml_parser/tests/fixture/document_type/system_id/span.swc-stderr
@@ -0,0 +1,48 @@
+
+  x Document
+   ,-[$DIR/tests/fixture/document_type/system_id/input.xml:1:1]
+ 1 | ,-> <!DOCTYPE greeting SYSTEM "hello.dtd">
+ 2 | `-> <root>Text</root>
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/system_id/input.xml:1:1]
+ 1 | <!DOCTYPE greeting SYSTEM "hello.dtd">
+   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ 2 | <root>Text</root>
+   `----
+
+  x DocumentType
+   ,-[$DIR/tests/fixture/document_type/system_id/input.xml:1:1]
+ 1 | <!DOCTYPE greeting SYSTEM "hello.dtd">
+   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ 2 | <root>Text</root>
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/system_id/input.xml:1:1]
+ 1 | <!DOCTYPE greeting SYSTEM "hello.dtd">
+ 2 | <root>Text</root>
+   : ^^^^^^^^^^^^^^^^^
+   `----
+
+  x Element
+   ,-[$DIR/tests/fixture/document_type/system_id/input.xml:1:1]
+ 1 | <!DOCTYPE greeting SYSTEM "hello.dtd">
+ 2 | <root>Text</root>
+   : ^^^^^^^^^^^^^^^^^
+   `----
+
+  x Child
+   ,-[$DIR/tests/fixture/document_type/system_id/input.xml:1:1]
+ 1 | <!DOCTYPE greeting SYSTEM "hello.dtd">
+ 2 | <root>Text</root>
+   :       ^^^^
+   `----
+
+  x Text
+   ,-[$DIR/tests/fixture/document_type/system_id/input.xml:1:1]
+ 1 | <!DOCTYPE greeting SYSTEM "hello.dtd">
+ 2 | <root>Text</root>
+   :       ^^^^
+   `----