Add quotes around unexpected token SyntaxError

Quotes have been added around the token to make the message clearer.

Bug: chromium:943636
Change-Id: Ic38f3e6d307157af2c0146e69fb611a2cfb46564
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1593307
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62074}

AUTHORS

@@ -139,6 +139,7 @@ Nicolas Antonius Ernst Leopold Maria Kaiser <nikai@nikai.net>
 Niklas Hambüchen <mail@nh2.me>
 Noj Vek <nojvek@gmail.com>
 Oleksandr Chekhovskyi <oleksandr.chekhovskyi@gmail.com>
+Oliver Dunk <oliver@oliverdunk.com>
 Paolo Giarrusso <p.giarrusso@gmail.com>
 Patrick Gansterer <paroga@paroga.com>
 Peng Fei <pfgenyun@gmail.com>

src/execution/message-template.h

@@ -495,7 +495,7 @@ namespace internal {
   T(UnexpectedSuper, "'super' keyword unexpected here")                        \
   T(UnexpectedNewTarget, "new.target expression is not allowed here")          \
   T(UnexpectedTemplateString, "Unexpected template string")                    \
-  T(UnexpectedToken, "Unexpected token %")                                     \
+  T(UnexpectedToken, "Unexpected token '%'")                                   \
   T(UnexpectedTokenUnaryExponentiation,                                        \
     "Unary operator used immediately before exponentiation expression. "       \
     "Parenthesis must be used to disambiguate operator precedence")            \

test/cctest/test-liveedit.cc

@@ -505,7 +505,7 @@ TEST(LiveEditCompileError) {
   CHECK_EQ(result.column_number, 51);
   v8::String::Utf8Value result_message(env->GetIsolate(), result.message);
   CHECK_NOT_NULL(
-      strstr(*result_message, "Uncaught SyntaxError: Unexpected token )"));
+      strstr(*result_message, "Uncaught SyntaxError: Unexpected token ')'"));
 
   {
     v8::Local<v8::String> result =

test/cctest/test-parsing.cc

@@ -4701,10 +4701,10 @@ TEST(ImportExpressionSuccess) {
   // context.
   // For example, a top level "import(" is parsed as an
   // import declaration. The parser parses the import token correctly
-  // and then shows an "Unexpected token (" error message. The
+  // and then shows an "Unexpected token '('" error message. The
   // preparser does not understand the import keyword (this test is
   // run without kAllowHarmonyDynamicImport flag), so this results in
-  // an "Unexpected token import" error.
+  // an "Unexpected token 'import'" error.
   RunParserSyncTest(context_data, data, kError);
   RunModuleParserSyncTest(context_data, data, kError, nullptr, 0, nullptr, 0,
                           nullptr, 0, true, true);
@@ -4772,7 +4772,7 @@ TEST(ImportExpressionErrors) {
     // as an import declaration. The parser parses the import token
     // correctly and then shows an "Unexpected end of input" error
     // message because of the '{'. The preparser shows an "Unexpected
-    // token {" because it's not a valid token in a CallExpression.
+    // token '{'" because it's not a valid token in a CallExpression.
     RunModuleParserSyncTest(context_data, data, kError, nullptr, 0, flags,
                             arraysize(flags), nullptr, 0, true, true);
   }

test/inspector/debugger/evaluate-on-call-frame-return-values-expected.txt

@@ -308,7 +308,7 @@ ReleaseObjectGroup with invalid params
 Running test: testEvaluateSyntaxError
 {
     className : SyntaxError
-    description : SyntaxError: Unexpected token ]     at <anonymous>:1:1
+    description : SyntaxError: Unexpected token ']'     at <anonymous>:1:1
     objectId : <objectId>
     subtype : error
     type : object
@@ -351,4 +351,4 @@ Running test: testNullExpression
         message : Invalid parameters
     }
     id : <messageId>
-}
+}
\ No newline at end of file

test/inspector/runtime/call-function-on-async-expected.txt

@@ -43,7 +43,7 @@ Running test: testSyntaxErrorInFunction
             columnNumber : 2
             exception : {
                 className : SyntaxError
-                description : SyntaxError: Unexpected token }
+                description : SyntaxError: Unexpected token '}'
                 objectId : <objectId>
                 subtype : error
                 type : object
@@ -55,7 +55,7 @@ Running test: testSyntaxErrorInFunction
         }
         result : {
             className : SyntaxError
-            description : SyntaxError: Unexpected token }
+            description : SyntaxError: Unexpected token '}'
             objectId : <objectId>
             subtype : error
             type : object

test/inspector/runtime/es6-module-expected.txt

@@ -206,21 +206,21 @@ console.log(239)
             columnNumber : 0
             exception : {
                 className : SyntaxError
-                description : SyntaxError: Unexpected token }
+                description : SyntaxError: Unexpected token '}'
                 objectId : <objectId>
                 preview : {
-                    description : SyntaxError: Unexpected token }
+                    description : SyntaxError: Unexpected token '}'
                     overflow : false
                     properties : [
                         [0] : {
                             name : stack
                             type : string
-                            value : SyntaxError: Unexpected token }
+                            value : SyntaxError: Unexpected token '}'
                         }
                         [1] : {
                             name : message
                             type : string
-                            value : Unexpected token }
+                            value : Unexpected token '}'
                         }
                     ]
                     subtype : error
@@ -233,7 +233,7 @@ console.log(239)
             executionContextId : <executionContextId>
             lineNumber : 0
             scriptId : <scriptId>
-            text : Uncaught SyntaxError: Unexpected token }
+            text : Uncaught SyntaxError: Unexpected token '}'
             url : module4
         }
         timestamp : <timestamp>

test/inspector/runtime/evaluate-async-expected.txt

@@ -89,7 +89,7 @@ Running test: testRejectedPromiseWithSyntaxError
             columnNumber : 5
             exception : {
                 className : SyntaxError
-                description : SyntaxError: Unexpected token }     at foo (<anonymous>:21:5)     at throwSyntaxError (<anonymous>:23:3)
+                description : SyntaxError: Unexpected token '}'     at foo (<anonymous>:21:5)     at throwSyntaxError (<anonymous>:23:3)
                 objectId : <objectId>
                 subtype : error
                 type : object
@@ -115,11 +115,11 @@ Running test: testRejectedPromiseWithSyntaxError
                     }
                 ]
             }
-            text : Uncaught (in promise) SyntaxError: Unexpected token }
+            text : Uncaught (in promise) SyntaxError: Unexpected token '}'
         }
         result : {
             className : SyntaxError
-            description : SyntaxError: Unexpected token }     at foo (<anonymous>:21:5)     at throwSyntaxError (<anonymous>:23:3)
+            description : SyntaxError: Unexpected token '}'     at foo (<anonymous>:21:5)     at throwSyntaxError (<anonymous>:23:3)
             objectId : <objectId>
             subtype : error
             type : object

test/inspector/runtime/exception-thrown-expected.txt

@@ -50,21 +50,21 @@ Check that exceptionThrown is supported by test runner.
             columnNumber : 1
             exception : {
                 className : SyntaxError
-                description : SyntaxError: Unexpected token }
+                description : SyntaxError: Unexpected token '}'
                 objectId : <objectId>
                 preview : {
-                    description : SyntaxError: Unexpected token }
+                    description : SyntaxError: Unexpected token '}'
                     overflow : false
                     properties : [
                         [0] : {
                             name : stack
                             type : string
-                            value : SyntaxError: Unexpected token }
+                            value : SyntaxError: Unexpected token '}'
                         }
                         [1] : {
                             name : message
                             type : string
-                            value : Unexpected token }
+                            value : Unexpected token '}'
                         }
                     ]
                     subtype : error
@@ -77,7 +77,7 @@ Check that exceptionThrown is supported by test runner.
             executionContextId : <executionContextId>
             lineNumber : 0
             scriptId : <scriptId>
-            text : Uncaught SyntaxError: Unexpected token }
+            text : Uncaught SyntaxError: Unexpected token '}'
         }
         timestamp : <timestamp>
     }

test/inspector/runtime/exceptionthrown-on-connect-expected.txt

@@ -7,7 +7,7 @@ Enabling Runtime Domain.
             columnNumber : 12
             exception : {
                 className : SyntaxError
-                description : SyntaxError: Unexpected token ;
+                description : SyntaxError: Unexpected token ';'
                 objectId : <objectId>
                 subtype : error
                 type : object
@@ -16,7 +16,7 @@ Enabling Runtime Domain.
             executionContextId : <executionContextId>
             lineNumber : 1
             scriptId : <scriptId>
-            text : Uncaught SyntaxError: Unexpected token ;
+            text : Uncaught SyntaxError: Unexpected token ';'
             url : syntaxError.js
         }
         timestamp : <timestamp>

test/inspector/runtime/run-script-async-expected.txt

@@ -24,7 +24,7 @@ Running test: testSyntaxErrorInScript
             columnNumber : 1
             exception : {
                 className : SyntaxError
-                description : SyntaxError: Unexpected token }
+                description : SyntaxError: Unexpected token '}'
                 objectId : <objectId>
                 subtype : error
                 type : object
@@ -45,7 +45,7 @@ Running test: testSyntaxErrorInEvalInScript
             columnNumber : 0
             exception : {
                 className : SyntaxError
-                description : SyntaxError: Unexpected token }     at boo.js:2:2
+                description : SyntaxError: Unexpected token '}'     at boo.js:2:2
                 objectId : <objectId>
                 subtype : error
                 type : object
@@ -68,7 +68,7 @@ Running test: testSyntaxErrorInEvalInScript
         }
         result : {
             className : SyntaxError
-            description : SyntaxError: Unexpected token }     at boo.js:2:2
+            description : SyntaxError: Unexpected token '}'     at boo.js:2:2
             objectId : <objectId>
             subtype : error
             type : object

test/message/fail/arrow-bare-rest-param.out

-*%(basename)s:7: SyntaxError: Unexpected token ...
+*%(basename)s:7: SyntaxError: Unexpected token '...'
 ...x => 10
 ^^^
-SyntaxError: Unexpected token ...
+SyntaxError: Unexpected token '...'

test/message/fail/arrow-missing.out

-*%(basename)s:7: SyntaxError: Unexpected token )
+*%(basename)s:7: SyntaxError: Unexpected token ')'
 function foo() { return(); }
                         ^
-SyntaxError: Unexpected token )
+SyntaxError: Unexpected token ')'

test/message/fail/class-spread-property.out

-*%(basename)s:5: SyntaxError: Unexpected token ...
+*%(basename)s:5: SyntaxError: Unexpected token '...'
 class C { ...[] }
           ^^^
-SyntaxError: Unexpected token ...
+SyntaxError: Unexpected token '...'
\ No newline at end of file

test/message/fail/formal-parameters-trailing-comma.out

-*%(basename)s:5: SyntaxError: Unexpected token ,
+*%(basename)s:5: SyntaxError: Unexpected token ','
 function foo(b, a, a,,) { return a }
                      ^
-SyntaxError: Unexpected token ,
+SyntaxError: Unexpected token ','

test/message/fail/invalid-spread.out

-*%(basename)s:7: SyntaxError: Unexpected token ...
+*%(basename)s:7: SyntaxError: Unexpected token '...'
 (x, ...y)
     ^^^
-SyntaxError: Unexpected token ...
+SyntaxError: Unexpected token '...'

test/message/fail/modules-export-illformed-class.out

-*%(basename)s:7: SyntaxError: Unexpected token ]
+*%(basename)s:7: SyntaxError: Unexpected token ']'
 export class foo {[]};
                    ^
-SyntaxError: Unexpected token ]
+SyntaxError: Unexpected token ']'
 

test/message/regress/fail/regress-8409.out

-*%(basename)s:5: SyntaxError: Unexpected token )
+*%(basename)s:5: SyntaxError: Unexpected token ')'
 [().x] = 1
   ^
-SyntaxError: Unexpected token )
+SyntaxError: Unexpected token ')'

test/mjsunit/regress/regress-797581.js

@@ -21,7 +21,7 @@ function TryToLoadModule(filename, expect_error, token) {
 
   if (expect_error) {
     assertTrue(caught_error instanceof SyntaxError);
-    assertEquals("Unexpected token " + token, caught_error.message);
+    assertEquals("Unexpected token '" + token + "'", caught_error.message);
   } else {
     assertEquals(undefined, caught_error);
   }

test/webkit/class-syntax-declaration-expected.txt

@@ -16,10 +16,10 @@ PASS setterValue = undefined; (new A).someSetter = 789; setterValue is 789
 PASS (new A).__proto__ is A.prototype
 PASS A.prototype.constructor is A
 PASS class threw exception SyntaxError: Unexpected end of input.
-PASS class [ threw exception SyntaxError: Unexpected token [.
-PASS class { threw exception SyntaxError: Unexpected token {.
+PASS class [ threw exception SyntaxError: Unexpected token '['.
+PASS class { threw exception SyntaxError: Unexpected token '{'.
 PASS class X { threw exception SyntaxError: Unexpected end of input.
-PASS class X { ( } threw exception SyntaxError: Unexpected token (.
+PASS class X { ( } threw exception SyntaxError: Unexpected token '('.
 PASS class X {} did not throw exception.
 PASS class X { constructor() {} constructor() {} } threw exception SyntaxError: A class may only have one constructor.
 PASS class X { get constructor() {} } threw exception SyntaxError: Class constructor may not be an accessor.

test/webkit/class-syntax-declaration.js

@@ -52,10 +52,10 @@ shouldBe("(new A).__proto__", "A.prototype");
 shouldBe("A.prototype.constructor", "A");
 
 shouldThrow("class", "'SyntaxError: Unexpected end of input'");
-shouldThrow("class [", "'SyntaxError: Unexpected token ['");
-shouldThrow("class {", "'SyntaxError: Unexpected token {'");
+shouldThrow("class [", '"SyntaxError: Unexpected token \'[\'"');
+shouldThrow("class {", '"SyntaxError: Unexpected token \'{\'"');
 shouldThrow("class X {", "'SyntaxError: Unexpected end of input'");
-shouldThrow("class X { ( }", "'SyntaxError: Unexpected token ('");
+shouldThrow("class X { ( }", '"SyntaxError: Unexpected token \'(\'"');
 shouldNotThrow("class X {}");
 
 shouldThrow("class X { constructor() {} constructor() {} }", "'SyntaxError: A class may only have one constructor'");

test/webkit/class-syntax-expression-expected.txt

@@ -17,7 +17,7 @@ PASS (new A).__proto__ is A.prototype
 PASS A.prototype.constructor is A
 PASS x = class threw exception SyntaxError: Unexpected end of input.
 PASS x = class { threw exception SyntaxError: Unexpected end of input.
-PASS x = class { ( } threw exception SyntaxError: Unexpected token (.
+PASS x = class { ( } threw exception SyntaxError: Unexpected token '('.
 PASS x = class {} did not throw exception.
 PASS x = class { constructor() {} constructor() {} } threw exception SyntaxError: A class may only have one constructor.
 PASS x = class { get constructor() {} } threw exception SyntaxError: Class constructor may not be an accessor.

test/webkit/class-syntax-expression.js

@@ -53,7 +53,7 @@ shouldBe("A.prototype.constructor", "A");
 
 shouldThrow("x = class", "'SyntaxError: Unexpected end of input'");
 shouldThrow("x = class {", "'SyntaxError: Unexpected end of input'");
-shouldThrow("x = class { ( }", "'SyntaxError: Unexpected token ('");
+shouldThrow("x = class { ( }", '"SyntaxError: Unexpected token \'(\'"');
 shouldNotThrow("x = class {}");
 
 shouldThrow("x = class { constructor() {} constructor() {} }", "'SyntaxError: A class may only have one constructor'");

test/webkit/class-syntax-extends-expected.txt

@@ -30,8 +30,8 @@ PASS x = class extends baseWithBadPrototype { constructor() { } } threw exceptio
 PASS baseWithBadPrototype.prototype = "abc" did not throw exception.
 PASS x = class extends baseWithBadPrototype { constructor() { } } threw exception TypeError: Class extends value does not have valid prototype property abc.
 PASS baseWithBadPrototype.prototype = null; x = class extends baseWithBadPrototype { constructor() { } } did not throw exception.
-PASS x = 1; c = class extends ++x { constructor() { } }; threw exception SyntaxError: Unexpected token ++.
-PASS x = 1; c = class extends x++ { constructor() { } }; threw exception SyntaxError: Unexpected token ++.
+PASS x = 1; c = class extends ++x { constructor() { } }; threw exception SyntaxError: Unexpected token '++'.
+PASS x = 1; c = class extends x++ { constructor() { } }; threw exception SyntaxError: Unexpected token '++'.
 PASS x = 1; c = class extends (++x) { constructor() { } }; threw exception TypeError: Class extends value 2 is not a constructor or null.
 PASS x = 1; c = class extends (x++) { constructor() { } }; threw exception TypeError: Class extends value 1 is not a constructor or null.
 PASS x = 1; try { c = class extends (++x) { constructor() { } } } catch (e) { }; x is 2
@@ -45,7 +45,7 @@ PASS namespace = {}; namespace.A = class { constructor() { } }; namespace.B = cl
 PASS namespace = {}; namespace.A = class { constructor() { } }; function getClassA() { return namespace.A }; namespace.B = class extends getClassA() { constructor() { } } did not throw exception.
 PASS namespace = {}; namespace.A = class { constructor() { } }; function getClass(prop) { return namespace[prop] }; namespace.B = class extends getClass("A") { constructor() { } } did not throw exception.
 PASS namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends (false||null||namespace.A) { constructor() { } } did not throw exception.
-PASS namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends false||null||namespace.A { constructor() { } } threw exception SyntaxError: Unexpected token ||.
+PASS namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends false||null||namespace.A { constructor() { } } threw exception SyntaxError: Unexpected token '||'.
 PASS x = 1; namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends (x++, namespace.A) { constructor() { } }; did not throw exception.
 PASS x = 1; namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends (namespace.A, x++) { constructor() { } }; threw exception TypeError: Class extends value 1 is not a constructor or null.
 PASS namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends new namespace.A { constructor() { } } threw exception TypeError: Class extends value [object Object] is not a constructor or null.

test/webkit/class-syntax-name-expected.txt

@@ -6,10 +6,10 @@ On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE
 Class statement
 PASS A threw exception ReferenceError: A is not defined.
 PASS 'use strict'; A threw exception ReferenceError: A is not defined.
-PASS class {} threw exception SyntaxError: Unexpected token {.
-PASS 'use strict'; class {} threw exception SyntaxError: Unexpected token {.
-PASS class { constructor() {} } threw exception SyntaxError: Unexpected token {.
-PASS 'use strict'; class { constructor() {} } threw exception SyntaxError: Unexpected token {.
+PASS class {} threw exception SyntaxError: Unexpected token '{'.
+PASS 'use strict'; class {} threw exception SyntaxError: Unexpected token '{'.
+PASS class { constructor() {} } threw exception SyntaxError: Unexpected token '{'.
+PASS 'use strict'; class { constructor() {} } threw exception SyntaxError: Unexpected token '{'.
 PASS class A { constructor() {} } did not throw exception.
 PASS 'use strict'; class A { constructor() {} } did not throw exception.
 PASS class A { constructor() {} }; A.toString() is 'class A { constructor() {} }'

test/webkit/class-syntax-semicolon-expected.txt

@@ -3,11 +3,11 @@ Tests for ES6 class syntax containing semicolon in the class body
 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
 
 
-PASS class A { foo() ; { } } threw exception SyntaxError: Unexpected token ;.
-PASS class A { get foo;() { } } threw exception SyntaxError: Unexpected token ;.
-PASS class A { get foo() ; { } } threw exception SyntaxError: Unexpected token ;.
-PASS class A { set foo;(x) { } } threw exception SyntaxError: Unexpected token ;.
-PASS class A { set foo(x) ; { } } threw exception SyntaxError: Unexpected token ;.
+PASS class A { foo() ; { } } threw exception SyntaxError: Unexpected token ';'.
+PASS class A { get foo;() { } } threw exception SyntaxError: Unexpected token ';'.
+PASS class A { get foo() ; { } } threw exception SyntaxError: Unexpected token ';'.
+PASS class A { set foo;(x) { } } threw exception SyntaxError: Unexpected token ';'.
+PASS class A { set foo(x) ; { } } threw exception SyntaxError: Unexpected token ';'.
 PASS class A { ; } did not throw exception.
 PASS class A { foo() { } ; } did not throw exception.
 PASS class A { get foo() { } ; } did not throw exception.

test/webkit/class-syntax-semicolon.js

@@ -23,11 +23,11 @@
 
 description('Tests for ES6 class syntax containing semicolon in the class body');
 
-shouldThrow("class A { foo() ; { } }", "'SyntaxError: Unexpected token ;'");
-shouldThrow("class A { get foo;() { } }", "'SyntaxError: Unexpected token ;'");
-shouldThrow("class A { get foo() ; { } }", "'SyntaxError: Unexpected token ;'");
-shouldThrow("class A { set foo;(x) { } }", "'SyntaxError: Unexpected token ;'");
-shouldThrow("class A { set foo(x) ; { } }", "'SyntaxError: Unexpected token ;'");
+shouldThrow("class A { foo() ; { } }", '"SyntaxError: Unexpected token \';\'"');
+shouldThrow("class A { get foo;() { } }", '"SyntaxError: Unexpected token \';\'"');
+shouldThrow("class A { get foo() ; { } }", '"SyntaxError: Unexpected token \';\'"');
+shouldThrow("class A { set foo;(x) { } }", '"SyntaxError: Unexpected token \';\'"');
+shouldThrow("class A { set foo(x) ; { } }", '"SyntaxError: Unexpected token \';\'"');
 
 shouldNotThrow("class A { ; }");
 shouldNotThrow("class A { foo() { } ; }");

test/webkit/fast/js/function-constructor-error-expected.txt

@@ -26,8 +26,8 @@ This test checks that the Function constructor detects some syntax errors correc
 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
 
 
-FAIL Function('(i + (j)') should throw SyntaxError: Expected token ')'. Threw exception SyntaxError: Unexpected token }.
-FAIL Function('return (i + (j)') should throw SyntaxError: Expected token ')'. Threw exception SyntaxError: Unexpected token }.
+FAIL Function('(i + (j)') should throw SyntaxError: Expected token ')'. Threw exception SyntaxError: Unexpected token '}'.
+FAIL Function('return (i + (j)') should throw SyntaxError: Expected token ')'. Threw exception SyntaxError: Unexpected token '}'.
 PASS successfullyParsed is true
 
 TEST COMPLETE

test/webkit/fast/js/object-extra-comma-expected.txt

@@ -29,8 +29,8 @@ On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE
 PASS var foo = { 'bar' : 'YES' }; foo.bar is 'YES'
 PASS var foo = { 'bar' : 'YES', }; foo.bar is 'YES'
 PASS var foo = { 'bar' : 'YES' , }; foo.bar is 'YES'
-PASS var foo = { , 'bar' : 'YES' }; foo.bar threw exception SyntaxError: Unexpected token ,.
-PASS var foo = { 'bar' : 'YES',, }; foo.bar threw exception SyntaxError: Unexpected token ,.
+PASS var foo = { , 'bar' : 'YES' }; foo.bar threw exception SyntaxError: Unexpected token ','.
+PASS var foo = { 'bar' : 'YES',, }; foo.bar threw exception SyntaxError: Unexpected token ','.
 PASS successfullyParsed is true
 
 TEST COMPLETE

test/webkit/function-toString-object-literals-expected.txt

@@ -42,11 +42,11 @@ PASS compileAndSerialize('a = { "\'": null }') is 'a = { "\'": null }'
 PASS compileAndSerialize('a = { "\\"": null }') is 'a = { "\\"": null }'
 PASS compileAndSerialize('a = { get x() { } }') is 'a = { get x() { } }'
 PASS compileAndSerialize('a = { set x(y) { } }') is 'a = { set x(y) { } }'
-PASS compileAndSerialize('a = { --1: null }') threw exception SyntaxError: Unexpected token --.
-PASS compileAndSerialize('a = { -NaN: null }') threw exception SyntaxError: Unexpected token -.
-PASS compileAndSerialize('a = { -0: null }') threw exception SyntaxError: Unexpected token -.
-PASS compileAndSerialize('a = { -0.0: null }') threw exception SyntaxError: Unexpected token -.
-PASS compileAndSerialize('a = { -Infinity: null }') threw exception SyntaxError: Unexpected token -.
+PASS compileAndSerialize('a = { --1: null }') threw exception SyntaxError: Unexpected token '--'.
+PASS compileAndSerialize('a = { -NaN: null }') threw exception SyntaxError: Unexpected token '-'.
+PASS compileAndSerialize('a = { -0: null }') threw exception SyntaxError: Unexpected token '-'.
+PASS compileAndSerialize('a = { -0.0: null }') threw exception SyntaxError: Unexpected token '-'.
+PASS compileAndSerialize('a = { -Infinity: null }') threw exception SyntaxError: Unexpected token '-'.
 PASS successfullyParsed is true
 
 TEST COMPLETE