fix: automatic semicolon should be inserted given a number decimal a newline

Author: jackschu

src/scanner.c

@@ -152,7 +152,6 @@ static bool scan_automatic_semicolon(TSLexer *lexer, bool comment_condition, boo
 
     switch (lexer->lookahead) {
         case ',':
-        case '.':
         case ':':
         case ';':
         case '*':
@@ -169,6 +168,11 @@ static bool scan_automatic_semicolon(TSLexer *lexer, bool comment_condition, boo
         case '/':
             return false;
 
+        // Insert a semicolon before decimals literals but not otherwise.
+        case '.':
+            skip(lexer);
+            return iswdigit(lexer->lookahead);
+
         // Insert a semicolon before `--` and `++`, but not before binary `+` or `-`.
         case '+':
             skip(lexer);

test/corpus/literals.txt

@@ -13,6 +13,7 @@ Numbers
 0b1_000_000
 1_2_3
 12_3.4_5e6_7
+.4_5e6_7
 0b1_000_000n
 01
 00000123
@@ -33,6 +34,7 @@ Numbers
   (expression_statement (number))
   (expression_statement (number))
   (expression_statement (number))
+  (expression_statement (number))
   (expression_statement (number)))
 
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