fix: update chunkStart on missing unicode escape (#13261)

babel · May 6, 2021 · 278193b · 278193b
1 parent 9440318
commit 278193b
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Showing 6 changed files with 7 additions and 32 deletions.
diff --git a/packages/babel-parser/src/tokenizer/index.js b/packages/babel-parser/src/tokenizer/index.js
@@ -1462,6 +1462,7 @@ export default class Tokenizer extends ParserErrors {
 
         if (this.input.charCodeAt(++this.state.pos) !== charCodes.lowercaseU) {
           this.raise(this.state.pos, Errors.MissingUnicodeEscape);
+          chunkStart = this.state.pos - 1;
           continue;
         }
 

diff --git a/packages/babel-parser/test/fixtures/core/uncategorised/361/input.js b/packages/babel-parser/test/fixtures/core/uncategorised/361/input.js
diff --git a/packages/babel-parser/test/fixtures/core/uncategorised/361/output.json b/packages/babel-parser/test/fixtures/core/uncategorised/361/output.json
diff --git a/packages/babel-parser/test/fixtures/core/uncategorised/446/output.json b/packages/babel-parser/test/fixtures/core/uncategorised/446/output.json
@@ -16,8 +16,8 @@
         "start":0,"end":2,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":2}},
         "expression": {
           "type": "Identifier",
-          "start":0,"end":2,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":2},"identifierName":"\\\\\\"},
-          "name": "\\\\\\"
+          "start":0,"end":2,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":2},"identifierName":"\\\\"},
+          "name": "\\\\"
         }
       }
     ],

diff --git a/packages/babel-parser/test/fixtures/esprima/invalid-syntax/migrated_0032/output.json b/packages/babel-parser/test/fixtures/esprima/invalid-syntax/migrated_0032/output.json
@@ -15,8 +15,8 @@
         "start":0,"end":2,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":2}},
         "expression": {
           "type": "Identifier",
-          "start":0,"end":2,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":2},"identifierName":"xx\\"},
-          "name": "xx\\"
+          "start":0,"end":2,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":2},"identifierName":"x\\"},
+          "name": "x\\"
         }
       }
     ],

diff --git a/packages/babel-parser/test/fixtures/esprima/statement-expression/migrated_0003/output.json b/packages/babel-parser/test/fixtures/esprima/statement-expression/migrated_0003/output.json
@@ -15,8 +15,8 @@
         "start":0,"end":8,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":8}},
         "expression": {
           "type": "Identifier",
-          "start":0,"end":8,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":8},"identifierName":"aa\\a"},
-          "name": "aa\\a"
+          "start":0,"end":8,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":8},"identifierName":"a\\a"},
+          "name": "a\\a"
         }
       }
     ],