From 308c7f01dc27f2cba219c590124d0ddd09b5e780 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=B1=B1=E5=90=B9=E8=89=B2=E5=BE=A1=E5=AE=88?=
 <85992002+KazariEX@users.noreply.github.com>
Date: Wed, 18 Jun 2025 21:27:41 +0800
Subject: [PATCH] refactor: opt-in

---
 .../__snapshots__/parse.spec.ts.snap          | 1560 -----------------
 .../compiler-core/__tests__/parse.spec.ts     |  115 --
 packages/compiler-core/src/ast.ts             |    2 +-
 packages/compiler-core/src/options.ts         |    5 +
 packages/compiler-core/src/parser.ts          |    9 +-
 5 files changed, 12 insertions(+), 1679 deletions(-)

diff --git a/packages/compiler-core/__tests__/__snapshots__/parse.spec.ts.snap b/packages/compiler-core/__tests__/__snapshots__/parse.spec.ts.snap
index e2263c31a..942eed4c4 100644
--- a/packages/compiler-core/__tests__/__snapshots__/parse.spec.ts.snap
+++ b/packages/compiler-core/__tests__/__snapshots__/parse.spec.ts.snap
@@ -26,36 +26,10 @@ exports[`compiler: parse > Edge Cases > invalid html 1`] = `
           "ns": 0,
           "props": [],
           "tag": "span",
-          "tagLoc": {
-            "end": {
-              "column": 6,
-              "line": 2,
-              "offset": 11,
-            },
-            "source": "span",
-            "start": {
-              "column": 2,
-              "line": 2,
-              "offset": 7,
-            },
-          },
           "tagType": 0,
           "type": 1,
         },
       ],
-      "closeTagLoc": {
-        "end": {
-          "column": 6,
-          "line": 3,
-          "offset": 18,
-        },
-        "source": "div",
-        "start": {
-          "column": 3,
-          "line": 3,
-          "offset": 15,
-        },
-      },
       "codegenNode": undefined,
       "loc": {
         "end": {
@@ -75,19 +49,6 @@ exports[`compiler: parse > Edge Cases > invalid html 1`] = `
       "ns": 0,
       "props": [],
       "tag": "div",
-      "tagLoc": {
-        "end": {
-          "column": 5,
-          "line": 1,
-          "offset": 4,
-        },
-        "source": "div",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -205,19 +166,6 @@ exports[`compiler: parse > Edge Cases > self closing multiple tag 1`] = `
         },
       ],
       "tag": "div",
-      "tagLoc": {
-        "end": {
-          "column": 5,
-          "line": 1,
-          "offset": 4,
-        },
-        "source": "div",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -299,19 +247,6 @@ exports[`compiler: parse > Edge Cases > self closing multiple tag 1`] = `
         },
       ],
       "tag": "p",
-      "tagLoc": {
-        "end": {
-          "column": 3,
-          "line": 2,
-          "offset": 39,
-        },
-        "source": "p",
-        "start": {
-          "column": 2,
-          "line": 2,
-          "offset": 38,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -427,19 +362,6 @@ exports[`compiler: parse > Edge Cases > valid html 1`] = `
             },
           ],
           "tag": "p",
-          "tagLoc": {
-            "end": {
-              "column": 5,
-              "line": 2,
-              "offset": 39,
-            },
-            "source": "p",
-            "start": {
-              "column": 4,
-              "line": 2,
-              "offset": 38,
-            },
-          },
           "tagType": 0,
           "type": 1,
         },
@@ -461,19 +383,6 @@ exports[`compiler: parse > Edge Cases > valid html 1`] = `
           "type": 3,
         },
       ],
-      "closeTagLoc": {
-        "end": {
-          "column": 6,
-          "line": 4,
-          "offset": 122,
-        },
-        "source": "div",
-        "start": {
-          "column": 3,
-          "line": 4,
-          "offset": 119,
-        },
-      },
       "codegenNode": undefined,
       "loc": {
         "end": {
@@ -552,19 +461,6 @@ exports[`compiler: parse > Edge Cases > valid html 1`] = `
         },
       ],
       "tag": "div",
-      "tagLoc": {
-        "end": {
-          "column": 5,
-          "line": 1,
-          "offset": 4,
-        },
-        "source": "div",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -606,19 +502,6 @@ exports[`compiler: parse > Errors > CDATA_IN_HTML_CONTENT > <template><![CDATA[c
   "children": [
     {
       "children": [],
-      "closeTagLoc": {
-        "end": {
-          "column": 38,
-          "line": 1,
-          "offset": 37,
-        },
-        "source": "template",
-        "start": {
-          "column": 30,
-          "line": 1,
-          "offset": 29,
-        },
-      },
       "codegenNode": undefined,
       "loc": {
         "end": {
@@ -636,19 +519,6 @@ exports[`compiler: parse > Errors > CDATA_IN_HTML_CONTENT > <template><![CDATA[c
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -704,19 +574,6 @@ exports[`compiler: parse > Errors > CDATA_IN_HTML_CONTENT > <template><svg><![CD
               "type": 2,
             },
           ],
-          "closeTagLoc": {
-            "end": {
-              "column": 38,
-              "line": 1,
-              "offset": 37,
-            },
-            "source": "svg",
-            "start": {
-              "column": 35,
-              "line": 1,
-              "offset": 34,
-            },
-          },
           "codegenNode": undefined,
           "loc": {
             "end": {
@@ -734,36 +591,10 @@ exports[`compiler: parse > Errors > CDATA_IN_HTML_CONTENT > <template><svg><![CD
           "ns": 1,
           "props": [],
           "tag": "svg",
-          "tagLoc": {
-            "end": {
-              "column": 15,
-              "line": 1,
-              "offset": 14,
-            },
-            "source": "svg",
-            "start": {
-              "column": 12,
-              "line": 1,
-              "offset": 11,
-            },
-          },
           "tagType": 0,
           "type": 1,
         },
       ],
-      "closeTagLoc": {
-        "end": {
-          "column": 49,
-          "line": 1,
-          "offset": 48,
-        },
-        "source": "template",
-        "start": {
-          "column": 41,
-          "line": 1,
-          "offset": 40,
-        },
-      },
       "codegenNode": undefined,
       "loc": {
         "end": {
@@ -781,19 +612,6 @@ exports[`compiler: parse > Errors > CDATA_IN_HTML_CONTENT > <template><svg><![CD
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -831,19 +649,6 @@ exports[`compiler: parse > Errors > DUPLICATE_ATTRIBUTE > <template><div id="" i
       "children": [
         {
           "children": [],
-          "closeTagLoc": {
-            "end": {
-              "column": 33,
-              "line": 1,
-              "offset": 32,
-            },
-            "source": "div",
-            "start": {
-              "column": 30,
-              "line": 1,
-              "offset": 29,
-            },
-          },
           "codegenNode": undefined,
           "loc": {
             "end": {
@@ -956,36 +761,10 @@ exports[`compiler: parse > Errors > DUPLICATE_ATTRIBUTE > <template><div id="" i
             },
           ],
           "tag": "div",
-          "tagLoc": {
-            "end": {
-              "column": 15,
-              "line": 1,
-              "offset": 14,
-            },
-            "source": "div",
-            "start": {
-              "column": 12,
-              "line": 1,
-              "offset": 11,
-            },
-          },
           "tagType": 0,
           "type": 1,
         },
       ],
-      "closeTagLoc": {
-        "end": {
-          "column": 44,
-          "line": 1,
-          "offset": 43,
-        },
-        "source": "template",
-        "start": {
-          "column": 36,
-          "line": 1,
-          "offset": 35,
-        },
-      },
       "codegenNode": undefined,
       "loc": {
         "end": {
@@ -1003,19 +782,6 @@ exports[`compiler: parse > Errors > DUPLICATE_ATTRIBUTE > <template><div id="" i
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -1086,19 +852,6 @@ exports[`compiler: parse > Errors > EOF_BEFORE_TAG_NAME > <template>< 1`] = `
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -1169,19 +922,6 @@ exports[`compiler: parse > Errors > EOF_BEFORE_TAG_NAME > <template></ 1`] = `
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -1236,19 +976,6 @@ exports[`compiler: parse > Errors > EOF_IN_CDATA > <template><svg><![CDATA[ 1`]
           "ns": 1,
           "props": [],
           "tag": "svg",
-          "tagLoc": {
-            "end": {
-              "column": 15,
-              "line": 1,
-              "offset": 14,
-            },
-            "source": "svg",
-            "start": {
-              "column": 12,
-              "line": 1,
-              "offset": 11,
-            },
-          },
           "tagType": 0,
           "type": 1,
         },
@@ -1270,19 +997,6 @@ exports[`compiler: parse > Errors > EOF_IN_CDATA > <template><svg><![CDATA[ 1`]
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -1355,19 +1069,6 @@ exports[`compiler: parse > Errors > EOF_IN_CDATA > <template><svg><![CDATA[cdata
           "ns": 1,
           "props": [],
           "tag": "svg",
-          "tagLoc": {
-            "end": {
-              "column": 15,
-              "line": 1,
-              "offset": 14,
-            },
-            "source": "svg",
-            "start": {
-              "column": 12,
-              "line": 1,
-              "offset": 11,
-            },
-          },
           "tagType": 0,
           "type": 1,
         },
@@ -1389,19 +1090,6 @@ exports[`compiler: parse > Errors > EOF_IN_CDATA > <template><svg><![CDATA[cdata
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -1454,19 +1142,6 @@ exports[`compiler: parse > Errors > EOF_IN_COMMENT > <template><!-- 1`] = `
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -1537,19 +1212,6 @@ exports[`compiler: parse > Errors > EOF_IN_COMMENT > <template><!--comment 1`] =
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -1602,19 +1264,6 @@ exports[`compiler: parse > Errors > EOF_IN_TAG > <div></div 1`] = `
       "ns": 0,
       "props": [],
       "tag": "div",
-      "tagLoc": {
-        "end": {
-          "column": 5,
-          "line": 1,
-          "offset": 4,
-        },
-        "source": "div",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -1667,19 +1316,6 @@ exports[`compiler: parse > Errors > EOF_IN_TAG > <template><div  1`] = `
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -1732,19 +1368,6 @@ exports[`compiler: parse > Errors > EOF_IN_TAG > <template><div 1`] = `
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -1797,19 +1420,6 @@ exports[`compiler: parse > Errors > EOF_IN_TAG > <template><div id  1`] = `
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -1862,19 +1472,6 @@ exports[`compiler: parse > Errors > EOF_IN_TAG > <template><div id = 1`] = `
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -1927,19 +1524,6 @@ exports[`compiler: parse > Errors > EOF_IN_TAG > <template><div id 1`] = `
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -1992,19 +1576,6 @@ exports[`compiler: parse > Errors > EOF_IN_TAG > <template><div id="abc 1`] = `
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -2057,19 +1628,6 @@ exports[`compiler: parse > Errors > EOF_IN_TAG > <template><div id="abc" 1`] = `
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -2140,19 +1698,6 @@ exports[`compiler: parse > Errors > EOF_IN_TAG > <template><div id="abc"/ 1`] =
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -2205,19 +1750,6 @@ exports[`compiler: parse > Errors > EOF_IN_TAG > <template><div id='abc 1`] = `
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -2270,19 +1802,6 @@ exports[`compiler: parse > Errors > EOF_IN_TAG > <template><div id='abc' 1`] = `
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -2353,19 +1872,6 @@ exports[`compiler: parse > Errors > EOF_IN_TAG > <template><div id='abc'/ 1`] =
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -2436,19 +1942,6 @@ exports[`compiler: parse > Errors > EOF_IN_TAG > <template><div id=abc / 1`] = `
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -2501,19 +1994,6 @@ exports[`compiler: parse > Errors > EOF_IN_TAG > <template><div id=abc 1`] = `
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -2551,19 +2031,6 @@ exports[`compiler: parse > Errors > MISSING_ATTRIBUTE_VALUE > <template><div id=
       "children": [
         {
           "children": [],
-          "closeTagLoc": {
-            "end": {
-              "column": 27,
-              "line": 1,
-              "offset": 26,
-            },
-            "source": "div",
-            "start": {
-              "column": 24,
-              "line": 1,
-              "offset": 23,
-            },
-          },
           "codegenNode": undefined,
           "loc": {
             "end": {
@@ -2629,36 +2096,10 @@ exports[`compiler: parse > Errors > MISSING_ATTRIBUTE_VALUE > <template><div id=
             },
           ],
           "tag": "div",
-          "tagLoc": {
-            "end": {
-              "column": 15,
-              "line": 1,
-              "offset": 14,
-            },
-            "source": "div",
-            "start": {
-              "column": 12,
-              "line": 1,
-              "offset": 11,
-            },
-          },
           "tagType": 0,
           "type": 1,
         },
       ],
-      "closeTagLoc": {
-        "end": {
-          "column": 38,
-          "line": 1,
-          "offset": 37,
-        },
-        "source": "template",
-        "start": {
-          "column": 30,
-          "line": 1,
-          "offset": 29,
-        },
-      },
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-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -4713,19 +3543,6 @@ exports[`compiler: parse > Errors > UNEXPECTED_EQUALS_SIGN_BEFORE_ATTRIBUTE_NAME
       "children": [
         {
           "children": [],
-          "closeTagLoc": {
-            "end": {
-              "column": 30,
-              "line": 1,
-              "offset": 29,
-            },
-            "source": "div",
-            "start": {
-              "column": 27,
-              "line": 1,
-              "offset": 26,
-            },
-          },
           "codegenNode": undefined,
           "loc": {
             "end": {
@@ -4791,36 +3608,10 @@ exports[`compiler: parse > Errors > UNEXPECTED_EQUALS_SIGN_BEFORE_ATTRIBUTE_NAME
             },
           ],
           "tag": "div",
-          "tagLoc": {
-            "end": {
-              "column": 15,
-              "line": 1,
-              "offset": 14,
-            },
-            "source": "div",
-            "start": {
-              "column": 12,
-              "line": 1,
-              "offset": 11,
-            },
-          },
           "tagType": 0,
           "type": 1,
         },
       ],
-      "closeTagLoc": {
-        "end": {
-          "column": 41,
-          "line": 1,
-          "offset": 40,
-        },
-        "source": "template",
-        "start": {
-          "column": 33,
-          "line": 1,
-          "offset": 32,
-        },
-      },
       "codegenNode": undefined,
       "loc": {
         "end": {
@@ -4838,19 +3629,6 @@ exports[`compiler: parse > Errors > UNEXPECTED_EQUALS_SIGN_BEFORE_ATTRIBUTE_NAME
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -4886,19 +3664,6 @@ exports[`compiler: parse > Errors > UNEXPECTED_QUESTION_MARK_INSTEAD_OF_TAG_NAME
   "children": [
     {
       "children": [],
-      "closeTagLoc": {
-        "end": {
-          "column": 28,
-          "line": 1,
-          "offset": 27,
-        },
-        "source": "template",
-        "start": {
-          "column": 20,
-          "line": 1,
-          "offset": 19,
-        },
-      },
       "codegenNode": undefined,
       "loc": {
         "end": {
@@ -4916,19 +3681,6 @@ exports[`compiler: parse > Errors > UNEXPECTED_QUESTION_MARK_INSTEAD_OF_TAG_NAME
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -4966,19 +3718,6 @@ exports[`compiler: parse > Errors > UNEXPECTED_SOLIDUS_IN_TAG > <template><div a
       "children": [
         {
           "children": [],
-          "closeTagLoc": {
-            "end": {
-              "column": 25,
-              "line": 1,
-              "offset": 24,
-            },
-            "source": "div",
-            "start": {
-              "column": 22,
-              "line": 1,
-              "offset": 21,
-            },
-          },
           "codegenNode": undefined,
           "loc": {
             "end": {
@@ -5059,36 +3798,10 @@ exports[`compiler: parse > Errors > UNEXPECTED_SOLIDUS_IN_TAG > <template><div a
             },
           ],
           "tag": "div",
-          "tagLoc": {
-            "end": {
-              "column": 15,
-              "line": 1,
-              "offset": 14,
-            },
-            "source": "div",
-            "start": {
-              "column": 12,
-              "line": 1,
-              "offset": 11,
-            },
-          },
           "tagType": 0,
           "type": 1,
         },
       ],
-      "closeTagLoc": {
-        "end": {
-          "column": 36,
-          "line": 1,
-          "offset": 35,
-        },
-        "source": "template",
-        "start": {
-          "column": 28,
-          "line": 1,
-          "offset": 27,
-        },
-      },
       "codegenNode": undefined,
       "loc": {
         "end": {
@@ -5106,19 +3819,6 @@ exports[`compiler: parse > Errors > UNEXPECTED_SOLIDUS_IN_TAG > <template><div a
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -5172,19 +3872,6 @@ exports[`compiler: parse > Errors > X_INVALID_END_TAG > <svg><![CDATA[</div>]]><
           "type": 2,
         },
       ],
-      "closeTagLoc": {
-        "end": {
-          "column": 29,
-          "line": 1,
-          "offset": 28,
-        },
-        "source": "svg",
-        "start": {
-          "column": 26,
-          "line": 1,
-          "offset": 25,
-        },
-      },
       "codegenNode": undefined,
       "loc": {
         "end": {
@@ -5202,19 +3889,6 @@ exports[`compiler: parse > Errors > X_INVALID_END_TAG > <svg><![CDATA[</div>]]><
       "ns": 1,
       "props": [],
       "tag": "svg",
-      "tagLoc": {
-        "end": {
-          "column": 5,
-          "line": 1,
-          "offset": 4,
-        },
-        "source": "svg",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -5268,19 +3942,6 @@ exports[`compiler: parse > Errors > X_INVALID_END_TAG > <svg><!--</div>--></svg>
           "type": 3,
         },
       ],
-      "closeTagLoc": {
-        "end": {
-          "column": 24,
-          "line": 1,
-          "offset": 23,
-        },
-        "source": "svg",
-        "start": {
-          "column": 21,
-          "line": 1,
-          "offset": 20,
-        },
-      },
       "codegenNode": undefined,
       "loc": {
         "end": {
@@ -5298,19 +3959,6 @@ exports[`compiler: parse > Errors > X_INVALID_END_TAG > <svg><!--</div>--></svg>
       "ns": 1,
       "props": [],
       "tag": "svg",
-      "tagLoc": {
-        "end": {
-          "column": 5,
-          "line": 1,
-          "offset": 4,
-        },
-        "source": "svg",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -5346,19 +3994,6 @@ exports[`compiler: parse > Errors > X_INVALID_END_TAG > <template></div></div></
   "children": [
     {
       "children": [],
-      "closeTagLoc": {
-        "end": {
-          "column": 33,
-          "line": 1,
-          "offset": 32,
-        },
-        "source": "template",
-        "start": {
-          "column": 25,
-          "line": 1,
-          "offset": 24,
-        },
-      },
       "codegenNode": undefined,
       "loc": {
         "end": {
@@ -5376,19 +4011,6 @@ exports[`compiler: parse > Errors > X_INVALID_END_TAG > <template></div></div></
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -5424,19 +4046,6 @@ exports[`compiler: parse > Errors > X_INVALID_END_TAG > <template></div></templa
   "children": [
     {
       "children": [],
-      "closeTagLoc": {
-        "end": {
-          "column": 27,
-          "line": 1,
-          "offset": 26,
-        },
-        "source": "template",
-        "start": {
-          "column": 19,
-          "line": 1,
-          "offset": 18,
-        },
-      },
       "codegenNode": undefined,
       "loc": {
         "end": {
@@ -5454,19 +4063,6 @@ exports[`compiler: parse > Errors > X_INVALID_END_TAG > <template></div></templa
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -5538,19 +4134,6 @@ exports[`compiler: parse > Errors > X_INVALID_END_TAG > <template>{{'</div>'}}</
           "type": 5,
         },
       ],
-      "closeTagLoc": {
-        "end": {
-          "column": 33,
-          "line": 1,
-          "offset": 32,
-        },
-        "source": "template",
-        "start": {
-          "column": 25,
-          "line": 1,
-          "offset": 24,
-        },
-      },
       "codegenNode": undefined,
       "loc": {
         "end": {
@@ -5568,19 +4151,6 @@ exports[`compiler: parse > Errors > X_INVALID_END_TAG > <template>{{'</div>'}}</
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -5651,19 +4221,6 @@ exports[`compiler: parse > Errors > X_INVALID_END_TAG > <template>a </ b</templa
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -5717,19 +4274,6 @@ exports[`compiler: parse > Errors > X_INVALID_END_TAG > <textarea></div></textar
           "type": 2,
         },
       ],
-      "closeTagLoc": {
-        "end": {
-          "column": 27,
-          "line": 1,
-          "offset": 26,
-        },
-        "source": "textarea",
-        "start": {
-          "column": 19,
-          "line": 1,
-          "offset": 18,
-        },
-      },
       "codegenNode": undefined,
       "loc": {
         "end": {
@@ -5747,19 +4291,6 @@ exports[`compiler: parse > Errors > X_INVALID_END_TAG > <textarea></div></textar
       "ns": 0,
       "props": [],
       "tag": "textarea",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "textarea",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -5884,19 +4415,6 @@ exports[`compiler: parse > Errors > X_MISSING_DYNAMIC_DIRECTIVE_ARGUMENT_END > <
         },
       ],
       "tag": "div",
-      "tagLoc": {
-        "end": {
-          "column": 5,
-          "line": 1,
-          "offset": 4,
-        },
-        "source": "div",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -5951,19 +4469,6 @@ exports[`compiler: parse > Errors > X_MISSING_END_TAG > <template><div> 1`] = `
           "ns": 0,
           "props": [],
           "tag": "div",
-          "tagLoc": {
-            "end": {
-              "column": 15,
-              "line": 1,
-              "offset": 14,
-            },
-            "source": "div",
-            "start": {
-              "column": 12,
-              "line": 1,
-              "offset": 11,
-            },
-          },
           "tagType": 0,
           "type": 1,
         },
@@ -5985,19 +4490,6 @@ exports[`compiler: parse > Errors > X_MISSING_END_TAG > <template><div> 1`] = `
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -6052,36 +4544,10 @@ exports[`compiler: parse > Errors > X_MISSING_END_TAG > <template><div></templat
           "ns": 0,
           "props": [],
           "tag": "div",
-          "tagLoc": {
-            "end": {
-              "column": 15,
-              "line": 1,
-              "offset": 14,
-            },
-            "source": "div",
-            "start": {
-              "column": 12,
-              "line": 1,
-              "offset": 11,
-            },
-          },
           "tagType": 0,
           "type": 1,
         },
       ],
-      "closeTagLoc": {
-        "end": {
-          "column": 26,
-          "line": 1,
-          "offset": 25,
-        },
-        "source": "template",
-        "start": {
-          "column": 18,
-          "line": 1,
-          "offset": 17,
-        },
-      },
       "codegenNode": undefined,
       "loc": {
         "end": {
@@ -6099,19 +4565,6 @@ exports[`compiler: parse > Errors > X_MISSING_END_TAG > <template><div></templat
       "ns": 0,
       "props": [],
       "tag": "template",
-      "tagLoc": {
-        "end": {
-          "column": 10,
-          "line": 1,
-          "offset": 9,
-        },
-        "source": "template",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
@@ -6182,19 +4635,6 @@ exports[`compiler: parse > Errors > X_MISSING_INTERPOLATION_END > <div>{{ foo</d
       "ns": 0,
       "props": [],
       "tag": "div",
-      "tagLoc": {
-        "end": {
-          "column": 5,
-          "line": 1,
-          "offset": 4,
-        },
-        "source": "div",
-        "start": {
-          "column": 2,
-          "line": 1,
-          "offset": 1,
-        },
-      },
       "tagType": 0,
       "type": 1,
     },
diff --git a/packages/compiler-core/__tests__/parse.spec.ts b/packages/compiler-core/__tests__/parse.spec.ts
index 5b1163545..4e5a96165 100644
--- a/packages/compiler-core/__tests__/parse.spec.ts
+++ b/packages/compiler-core/__tests__/parse.spec.ts
@@ -446,16 +446,6 @@ describe('compiler: parse', () => {
         type: NodeTypes.ELEMENT,
         ns: Namespaces.HTML,
         tag: 'div',
-        tagLoc: {
-          start: { offset: 1, line: 1, column: 2 },
-          end: { offset: 4, line: 1, column: 5 },
-          source: 'div',
-        },
-        closeTagLoc: {
-          start: { offset: 12, line: 1, column: 13 },
-          end: { offset: 15, line: 1, column: 16 },
-          source: 'div',
-        },
         tagType: ElementTypes.ELEMENT,
         codegenNode: undefined,
         props: [],
@@ -486,16 +476,6 @@ describe('compiler: parse', () => {
         type: NodeTypes.ELEMENT,
         ns: Namespaces.HTML,
         tag: 'div',
-        tagLoc: {
-          start: { offset: 1, line: 1, column: 2 },
-          end: { offset: 4, line: 1, column: 5 },
-          source: 'div',
-        },
-        closeTagLoc: {
-          start: { offset: 7, line: 1, column: 8 },
-          end: { offset: 10, line: 1, column: 11 },
-          source: 'div',
-        },
         tagType: ElementTypes.ELEMENT,
         codegenNode: undefined,
         props: [],
@@ -516,11 +496,6 @@ describe('compiler: parse', () => {
         type: NodeTypes.ELEMENT,
         ns: Namespaces.HTML,
         tag: 'div',
-        tagLoc: {
-          start: { offset: 1, line: 1, column: 2 },
-          end: { offset: 4, line: 1, column: 5 },
-          source: 'div',
-        },
         tagType: ElementTypes.ELEMENT,
         codegenNode: undefined,
         props: [],
@@ -544,11 +519,6 @@ describe('compiler: parse', () => {
         type: NodeTypes.ELEMENT,
         ns: Namespaces.HTML,
         tag: 'img',
-        tagLoc: {
-          start: { offset: 1, line: 1, column: 2 },
-          end: { offset: 4, line: 1, column: 5 },
-          source: 'img',
-        },
         tagType: ElementTypes.ELEMENT,
         codegenNode: undefined,
         props: [],
@@ -571,11 +541,6 @@ describe('compiler: parse', () => {
         type: NodeTypes.ELEMENT,
         ns: Namespaces.HTML,
         tag: 'img',
-        tagLoc: {
-          start: { offset: 1, line: 1, column: 2 },
-          end: { offset: 4, line: 1, column: 5 },
-          source: 'img',
-        },
         tagType: ElementTypes.ELEMENT,
         codegenNode: undefined,
         props: [],
@@ -763,16 +728,6 @@ describe('compiler: parse', () => {
         type: NodeTypes.ELEMENT,
         ns: Namespaces.HTML,
         tag: 'div',
-        tagLoc: {
-          start: { offset: 1, line: 1, column: 2 },
-          end: { offset: 4, line: 1, column: 5 },
-          source: 'div',
-        },
-        closeTagLoc: {
-          start: { offset: 10, line: 1, column: 11 },
-          end: { offset: 13, line: 1, column: 14 },
-          source: 'div',
-        },
         tagType: ElementTypes.ELEMENT,
         codegenNode: undefined,
         props: [
@@ -810,16 +765,6 @@ describe('compiler: parse', () => {
         type: NodeTypes.ELEMENT,
         ns: Namespaces.HTML,
         tag: 'div',
-        tagLoc: {
-          start: { offset: 1, line: 1, column: 2 },
-          end: { offset: 4, line: 1, column: 5 },
-          source: 'div',
-        },
-        closeTagLoc: {
-          start: { offset: 13, line: 1, column: 14 },
-          end: { offset: 16, line: 1, column: 17 },
-          source: 'div',
-        },
         tagType: ElementTypes.ELEMENT,
         codegenNode: undefined,
         props: [
@@ -865,16 +810,6 @@ describe('compiler: parse', () => {
         type: NodeTypes.ELEMENT,
         ns: Namespaces.HTML,
         tag: 'div',
-        tagLoc: {
-          start: { offset: 1, line: 1, column: 2 },
-          end: { offset: 4, line: 1, column: 5 },
-          source: 'div',
-        },
-        closeTagLoc: {
-          start: { offset: 13, line: 1, column: 14 },
-          end: { offset: 16, line: 1, column: 17 },
-          source: 'div',
-        },
         tagType: ElementTypes.ELEMENT,
         codegenNode: undefined,
         props: [
@@ -920,16 +855,6 @@ describe('compiler: parse', () => {
         type: NodeTypes.ELEMENT,
         ns: Namespaces.HTML,
         tag: 'div',
-        tagLoc: {
-          start: { offset: 1, line: 1, column: 2 },
-          end: { offset: 4, line: 1, column: 5 },
-          source: 'div',
-        },
-        closeTagLoc: {
-          start: { offset: 15, line: 1, column: 16 },
-          end: { offset: 18, line: 1, column: 19 },
-          source: 'div',
-        },
         tagType: ElementTypes.ELEMENT,
         codegenNode: undefined,
         props: [
@@ -975,16 +900,6 @@ describe('compiler: parse', () => {
         type: NodeTypes.ELEMENT,
         ns: Namespaces.HTML,
         tag: 'div',
-        tagLoc: {
-          start: { offset: 1, line: 1, column: 2 },
-          end: { offset: 4, line: 1, column: 5 },
-          source: 'div',
-        },
-        closeTagLoc: {
-          start: { offset: 15, line: 1, column: 16 },
-          end: { offset: 18, line: 1, column: 19 },
-          source: 'div',
-        },
         tagType: ElementTypes.ELEMENT,
         codegenNode: undefined,
         props: [
@@ -1030,16 +945,6 @@ describe('compiler: parse', () => {
         type: NodeTypes.ELEMENT,
         ns: Namespaces.HTML,
         tag: 'div',
-        tagLoc: {
-          start: { offset: 1, line: 1, column: 2 },
-          end: { offset: 4, line: 1, column: 5 },
-          source: 'div',
-        },
-        closeTagLoc: {
-          start: { offset: 13, line: 1, column: 14 },
-          end: { offset: 16, line: 1, column: 17 },
-          source: 'div',
-        },
         tagType: ElementTypes.ELEMENT,
         codegenNode: undefined,
         props: [
@@ -1168,16 +1073,6 @@ describe('compiler: parse', () => {
         type: NodeTypes.ELEMENT,
         ns: Namespaces.HTML,
         tag: 'div',
-        tagLoc: {
-          start: { offset: 1, line: 1, column: 2 },
-          end: { offset: 4, line: 1, column: 5 },
-          source: 'div',
-        },
-        closeTagLoc: {
-          start: { offset: 37, line: 1, column: 38 },
-          end: { offset: 40, line: 1, column: 41 },
-          source: 'div',
-        },
         tagType: ElementTypes.ELEMENT,
         codegenNode: undefined,
         props: [
@@ -1283,11 +1178,6 @@ describe('compiler: parse', () => {
 
       expect(element).toStrictEqual({
         children: [],
-        closeTagLoc: {
-          start: { column: 6, line: 3, offset: 25 },
-          end: { column: 9, line: 3, offset: 28 },
-          source: 'div',
-        },
         codegenNode: undefined,
         loc: {
           start: { column: 1, line: 1, offset: 0 },
@@ -1321,11 +1211,6 @@ describe('compiler: parse', () => {
           },
         ],
         tag: 'div',
-        tagLoc: {
-          start: { column: 2, line: 1, offset: 1 },
-          end: { column: 5, line: 1, offset: 4 },
-          source: 'div',
-        },
         tagType: ElementTypes.ELEMENT,
         type: NodeTypes.ELEMENT,
       })
diff --git a/packages/compiler-core/src/ast.ts b/packages/compiler-core/src/ast.ts
index 0bdb09f6d..69a89ffcb 100644
--- a/packages/compiler-core/src/ast.ts
+++ b/packages/compiler-core/src/ast.ts
@@ -130,7 +130,7 @@ export interface BaseElementNode extends Node {
   type: NodeTypes.ELEMENT
   ns: Namespace
   tag: string
-  tagLoc: SourceLocation
+  openTagLoc?: SourceLocation
   closeTagLoc?: SourceLocation
   tagType: ElementTypes
   props: Array<AttributeNode | DirectiveNode>
diff --git a/packages/compiler-core/src/options.ts b/packages/compiler-core/src/options.ts
index 1de865f42..59d1340c3 100644
--- a/packages/compiler-core/src/options.ts
+++ b/packages/compiler-core/src/options.ts
@@ -97,6 +97,11 @@ export interface ParserOptions
    * @default false
    */
   prefixIdentifiers?: boolean
+  /**
+   * Whether to calculate the location of open tag and close tag of each node.
+   * @default false
+   */
+  tagLocations?: boolean
   /**
    * A list of parser plugins to enable for `@babel/parser`, which is used to
    * parse expressions in bindings and interpolations.
diff --git a/packages/compiler-core/src/parser.ts b/packages/compiler-core/src/parser.ts
index 85f373f35..fc38a720c 100644
--- a/packages/compiler-core/src/parser.ts
+++ b/packages/compiler-core/src/parser.ts
@@ -78,6 +78,7 @@ export const defaultParserOptions: MergedParserOptions = {
   onWarn: defaultOnWarn,
   comments: __DEV__,
   prefixIdentifiers: false,
+  tagLocations: false,
 }
 
 let currentOptions: MergedParserOptions = defaultParserOptions
@@ -140,13 +141,15 @@ const tokenizer = new Tokenizer(stack, {
       type: NodeTypes.ELEMENT,
       tag: name,
       ns: currentOptions.getNamespace(name, stack[0], currentOptions.ns),
-      tagLoc: getLoc(start, end),
       tagType: ElementTypes.ELEMENT, // will be refined on tag close
       props: [],
       children: [],
       loc: getLoc(start - 1, end),
       codegenNode: undefined,
     }
+    if (currentOptions.tagLocations) {
+      currentOpenTag.openTagLoc = getLoc(start, end)
+    }
   },
 
   onopentagend(end) {
@@ -166,7 +169,7 @@ const tokenizer = new Tokenizer(stack, {
           }
           for (let j = 0; j <= i; j++) {
             const el = stack.shift()!
-            if (j === i) {
+            if (j === i && currentOptions.tagLocations) {
               el.closeTagLoc = getLoc(start, end)
             }
             onCloseTag(el, end, j < i)
@@ -492,7 +495,7 @@ const tokenizer = new Tokenizer(stack, {
 
 // This regex doesn't cover the case if key or index aliases have destructuring,
 // but those do not make sense in the first place, so this works in practice.
-const forIteratorRE = /,([^,\}\]]*)(?:,([^,\}\]]*))?$/
+const forIteratorRE = /,([^,}\]]*)(?:,([^,}\]]*))?$/
 const stripParensRE = /^\(|\)$/g
 
 function parseForExpression(