diff --git a/src/lib/es5.d.ts b/src/lib/es5.d.ts
index 7739652a072dc..36c4e4fff24b0 100644
--- a/src/lib/es5.d.ts
+++ b/src/lib/es5.d.ts
@@ -916,14 +916,7 @@ interface DateConstructor {
 
 declare var Date: DateConstructor;
 
-interface BaseRegExpArray extends Array<string> {
-    /**
-     * The first match. This will always be present because `null` will be returned if there are no matches.
-     */
-    0: string;
-}
-
-interface RegExpMatchArray extends BaseRegExpArray {
+interface RegExpMatchArray extends Array<string> {
     /**
      * The index of the search at which the result was found.
      */
@@ -932,9 +925,13 @@ interface RegExpMatchArray extends BaseRegExpArray {
      * A copy of the search string.
      */
     input?: string;
+    /**
+     * The first match. This will always be present because `null` will be returned if there are no matches.
+     */
+    0: string;
 }
 
-interface RegExpExecArray extends BaseRegExpArray {
+interface RegExpExecArray extends Array<string> {
     /**
      * The index of the search at which the result was found.
      */
@@ -943,6 +940,10 @@ interface RegExpExecArray extends BaseRegExpArray {
      * A copy of the search string.
      */
     input: string;
+    /**
+     * The first match. This will always be present because `null` will be returned if there are no matches.
+     */
+    0: string;
 }
 
 interface RegExp {
diff --git a/tests/baselines/reference/destructuringParameterDeclaration4.errors.txt b/tests/baselines/reference/destructuringParameterDeclaration4.errors.txt
index 435e733888af0..3f893a65b82af 100644
--- a/tests/baselines/reference/destructuringParameterDeclaration4.errors.txt
+++ b/tests/baselines/reference/destructuringParameterDeclaration4.errors.txt
@@ -41,7 +41,7 @@ tests/cases/conformance/es6/destructuring/destructuringParameterDeclaration4.ts(
     a1(...array2);            // Error parameter type is (number|string)[]
           ~~~~~~
 !!! error TS2552: Cannot find name 'array2'. Did you mean 'Array'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1493:13: 'Array' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1494:13: 'Array' is declared here.
     a5([1, 2, "string", false, true]);       // Error, parameter type is [any, any, [[any]]]
               ~~~~~~~~
 !!! error TS2322: Type 'string' is not assignable to type '[[any]]'.
diff --git a/tests/baselines/reference/destructuringTuple.errors.txt b/tests/baselines/reference/destructuringTuple.errors.txt
index 10122a2ff87c8..7a6ff666f6271 100644
--- a/tests/baselines/reference/destructuringTuple.errors.txt
+++ b/tests/baselines/reference/destructuringTuple.errors.txt
@@ -33,8 +33,8 @@ tests/cases/compiler/destructuringTuple.ts(11,60): error TS2769: No overload mat
 !!! error TS2769:   Overload 2 of 3, '(callbackfn: (previousValue: [], currentValue: number, currentIndex: number, array: number[]) => [], initialValue: []): []', gave the following error.
 !!! error TS2769:     Type 'never[]' is not assignable to type '[]'.
 !!! error TS2769:       Target allows only 0 element(s) but source may have more.
-!!! related TS6502 /.ts/lib.es5.d.ts:1458:24: The expected type comes from the return type of this signature.
-!!! related TS6502 /.ts/lib.es5.d.ts:1464:27: The expected type comes from the return type of this signature.
+!!! related TS6502 /.ts/lib.es5.d.ts:1459:24: The expected type comes from the return type of this signature.
+!!! related TS6502 /.ts/lib.es5.d.ts:1465:27: The expected type comes from the return type of this signature.
                                                                ~~
 !!! error TS2769: No overload matches this call.
 !!! error TS2769:   Overload 1 of 2, '(...items: ConcatArray<never>[]): never[]', gave the following error.
diff --git a/tests/baselines/reference/duplicateNumericIndexers.errors.txt b/tests/baselines/reference/duplicateNumericIndexers.errors.txt
index 9a5659cc9bfae..b54aa648ebc46 100644
--- a/tests/baselines/reference/duplicateNumericIndexers.errors.txt
+++ b/tests/baselines/reference/duplicateNumericIndexers.errors.txt
@@ -11,7 +11,7 @@ tests/cases/conformance/types/members/duplicateNumericIndexers.ts(25,5): error T
 tests/cases/conformance/types/members/duplicateNumericIndexers.ts(29,5): error TS2374: Duplicate index signature for type 'number'.
 tests/cases/conformance/types/members/duplicateNumericIndexers.ts(30,5): error TS2374: Duplicate index signature for type 'number'.
 lib.es5.d.ts(517,5): error TS2374: Duplicate index signature for type 'number'.
-lib.es5.d.ts(1479,5): error TS2374: Duplicate index signature for type 'number'.
+lib.es5.d.ts(1480,5): error TS2374: Duplicate index signature for type 'number'.
 
 
 ==== tests/cases/conformance/types/members/duplicateNumericIndexers.ts (12 errors) ====
diff --git a/tests/baselines/reference/firstMatchRegExpMatchArray.symbols b/tests/baselines/reference/firstMatchRegExpMatchArray.symbols
index 558df93a2adc2..39569bc41acf2 100644
--- a/tests/baselines/reference/firstMatchRegExpMatchArray.symbols
+++ b/tests/baselines/reference/firstMatchRegExpMatchArray.symbols
@@ -10,7 +10,7 @@ if (match !== null) {
     const foo: string = match[0]
 >foo : Symbol(foo, Decl(firstMatchRegExpMatchArray.ts, 3, 9))
 >match : Symbol(match, Decl(firstMatchRegExpMatchArray.ts, 0, 5))
->0 : Symbol(BaseRegExpArray[0], Decl(lib.es5.d.ts, --, --))
+>0 : Symbol(RegExpMatchArray[0], Decl(lib.es5.d.ts, --, --))
 
     const bar: string = match[1]
 >bar : Symbol(bar, Decl(firstMatchRegExpMatchArray.ts, 4, 9))
diff --git a/tests/baselines/reference/mappedTypeWithAsClauseAndLateBoundProperty.errors.txt b/tests/baselines/reference/mappedTypeWithAsClauseAndLateBoundProperty.errors.txt
index f9a462166d1ab..4523d9a9ade24 100644
--- a/tests/baselines/reference/mappedTypeWithAsClauseAndLateBoundProperty.errors.txt
+++ b/tests/baselines/reference/mappedTypeWithAsClauseAndLateBoundProperty.errors.txt
@@ -7,5 +7,5 @@ tests/cases/compiler/mappedTypeWithAsClauseAndLateBoundProperty.ts(3,1): error T
     tgt2 = src2; // Should error
     ~~~~
 !!! error TS2741: Property 'length' is missing in type '{ [x: number]: number; toString: () => string; toLocaleString: () => string; pop: () => number; push: (...items: number[]) => number; concat: { (...items: ConcatArray<number>[]): number[]; (...items: (number | ConcatArray<number>)[]): number[]; }; join: (separator?: string) => string; reverse: () => number[]; shift: () => number; slice: (start?: number, end?: number) => number[]; sort: (compareFn?: (a: number, b: number) => number) => number[]; splice: { (start: number, deleteCount?: number): number[]; (start: number, deleteCount: number, ...items: number[]): number[]; }; unshift: (...items: number[]) => number; indexOf: (searchElement: number, fromIndex?: number) => number; lastIndexOf: (searchElement: number, fromIndex?: number) => number; every: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): this is S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): boolean; }; some: (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any) => boolean; forEach: (callbackfn: (value: number, index: number, array: number[]) => void, thisArg?: any) => void; map: <U>(callbackfn: (value: number, index: number, array: number[]) => U, thisArg?: any) => U[]; filter: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): number[]; }; reduce: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; reduceRight: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; find: { <S extends number>(predicate: (this: void, value: number, index: number, obj: number[]) => value is S, thisArg?: any): S; (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any): number; }; findIndex: (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any) => number; fill: (value: number, start?: number, end?: number) => number[]; copyWithin: (target: number, start: number, end?: number) => number[]; entries: () => IterableIterator<[number, number]>; keys: () => IterableIterator<number>; values: () => IterableIterator<number>; includes: (searchElement: number, fromIndex?: number) => boolean; flatMap: <U, This = undefined>(callback: (this: This, value: number, index: number, array: number[]) => U | readonly U[], thisArg?: This) => U[]; flat: <A, D extends number = 1>(this: A, depth?: D) => FlatArray<A, D>[]; [iterator]: () => IterableIterator<number>; [unscopables]: () => { copyWithin: boolean; entries: boolean; fill: boolean; find: boolean; findIndex: boolean; keys: boolean; values: boolean; }; }' but required in type 'number[]'.
-!!! related TS2728 /.ts/lib.es5.d.ts:1302:5: 'length' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1303:5: 'length' is declared here.
     
\ No newline at end of file
diff --git a/tests/baselines/reference/narrowExceptionVariableInCatchClause.errors.txt b/tests/baselines/reference/narrowExceptionVariableInCatchClause.errors.txt
index 0dca67020bedc..16e36f119e8fb 100644
--- a/tests/baselines/reference/narrowExceptionVariableInCatchClause.errors.txt
+++ b/tests/baselines/reference/narrowExceptionVariableInCatchClause.errors.txt
@@ -24,7 +24,7 @@ tests/cases/conformance/types/any/narrowExceptionVariableInCatchClause.ts(16,17)
                 err.massage; // ERROR: Property 'massage' does not exist on type 'Error'
                     ~~~~~~~
 !!! error TS2551: Property 'massage' does not exist on type 'Error'. Did you mean 'message'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1052:5: 'message' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1053:5: 'message' is declared here.
             }
     
             else {
diff --git a/tests/baselines/reference/narrowFromAnyWithInstanceof.errors.txt b/tests/baselines/reference/narrowFromAnyWithInstanceof.errors.txt
index 5cc74edc6d930..f0707d7fbc485 100644
--- a/tests/baselines/reference/narrowFromAnyWithInstanceof.errors.txt
+++ b/tests/baselines/reference/narrowFromAnyWithInstanceof.errors.txt
@@ -22,7 +22,7 @@ tests/cases/conformance/types/any/narrowFromAnyWithInstanceof.ts(22,7): error TS
         x.mesage;
           ~~~~~~
 !!! error TS2551: Property 'mesage' does not exist on type 'Error'. Did you mean 'message'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1052:5: 'message' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1053:5: 'message' is declared here.
     }
     
     if (x instanceof Date) {
diff --git a/tests/baselines/reference/narrowFromAnyWithTypePredicate.errors.txt b/tests/baselines/reference/narrowFromAnyWithTypePredicate.errors.txt
index dacad99535ace..a104e9e4a334c 100644
--- a/tests/baselines/reference/narrowFromAnyWithTypePredicate.errors.txt
+++ b/tests/baselines/reference/narrowFromAnyWithTypePredicate.errors.txt
@@ -41,7 +41,7 @@ tests/cases/conformance/types/any/narrowFromAnyWithTypePredicate.ts(33,7): error
         x.mesage;
           ~~~~~~
 !!! error TS2551: Property 'mesage' does not exist on type 'Error'. Did you mean 'message'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1052:5: 'message' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1053:5: 'message' is declared here.
     }
     
     if (isDate(x)) {
diff --git a/tests/baselines/reference/narrowingWithNonNullExpression.symbols b/tests/baselines/reference/narrowingWithNonNullExpression.symbols
index 5100b784f2797..b60abdddbe61f 100644
--- a/tests/baselines/reference/narrowingWithNonNullExpression.symbols
+++ b/tests/baselines/reference/narrowingWithNonNullExpression.symbols
@@ -7,11 +7,11 @@ const m = ''.match('');
 m! && m[0];
 >m : Symbol(m, Decl(narrowingWithNonNullExpression.ts, 0, 5))
 >m : Symbol(m, Decl(narrowingWithNonNullExpression.ts, 0, 5))
->0 : Symbol(BaseRegExpArray[0], Decl(lib.es5.d.ts, --, --))
+>0 : Symbol(RegExpMatchArray[0], Decl(lib.es5.d.ts, --, --))
 
 m?.[0]! && m[0];
 >m : Symbol(m, Decl(narrowingWithNonNullExpression.ts, 0, 5))
->0 : Symbol(BaseRegExpArray[0], Decl(lib.es5.d.ts, --, --))
+>0 : Symbol(RegExpMatchArray[0], Decl(lib.es5.d.ts, --, --))
 >m : Symbol(m, Decl(narrowingWithNonNullExpression.ts, 0, 5))
->0 : Symbol(BaseRegExpArray[0], Decl(lib.es5.d.ts, --, --))
+>0 : Symbol(RegExpMatchArray[0], Decl(lib.es5.d.ts, --, --))
 
diff --git a/tests/baselines/reference/parserRegularExpressionDivideAmbiguity1.errors.txt b/tests/baselines/reference/parserRegularExpressionDivideAmbiguity1.errors.txt
index f14b0ccbe41a7..926040527e503 100644
--- a/tests/baselines/reference/parserRegularExpressionDivideAmbiguity1.errors.txt
+++ b/tests/baselines/reference/parserRegularExpressionDivideAmbiguity1.errors.txt
@@ -7,6 +7,6 @@ tests/cases/conformance/parser/ecmascript5/RegularExpressions/parserRegularExpre
     /notregexp/a.foo();
      ~~~~~~~~~
 !!! error TS2552: Cannot find name 'notregexp'. Did you mean 'RegExp'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1048:13: 'RegExp' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1049:13: 'RegExp' is declared here.
                ~
 !!! error TS2304: Cannot find name 'a'.
\ No newline at end of file
diff --git a/tests/baselines/reference/parserRegularExpressionDivideAmbiguity2.errors.txt b/tests/baselines/reference/parserRegularExpressionDivideAmbiguity2.errors.txt
index e0f32f5a497f1..116f7dcc790a8 100644
--- a/tests/baselines/reference/parserRegularExpressionDivideAmbiguity2.errors.txt
+++ b/tests/baselines/reference/parserRegularExpressionDivideAmbiguity2.errors.txt
@@ -6,6 +6,6 @@ tests/cases/conformance/parser/ecmascript5/RegularExpressions/parserRegularExpre
     (1) /notregexp/a.foo();
          ~~~~~~~~~
 !!! error TS2552: Cannot find name 'notregexp'. Did you mean 'RegExp'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1048:13: 'RegExp' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1049:13: 'RegExp' is declared here.
                    ~
 !!! error TS2304: Cannot find name 'a'.
\ No newline at end of file
diff --git a/tests/baselines/reference/parserS7.2_A1.5_T2.errors.txt b/tests/baselines/reference/parserS7.2_A1.5_T2.errors.txt
index 40996a0ba0425..d65f50bdb7203 100644
--- a/tests/baselines/reference/parserS7.2_A1.5_T2.errors.txt
+++ b/tests/baselines/reference/parserS7.2_A1.5_T2.errors.txt
@@ -19,7 +19,7 @@ tests/cases/conformance/parser/ecmascript5/parserS7.2_A1.5_T2.ts(20,3): error TS
       $ERROR('#1: eval("\\u00A0var x\\u00A0= 1\\u00A0"); x === 1. Actual: ' + (x));
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1062:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1063:13: 'Error' is declared here.
     }
     
     //CHECK#2
@@ -28,7 +28,7 @@ tests/cases/conformance/parser/ecmascript5/parserS7.2_A1.5_T2.ts(20,3): error TS
       $ERROR('#2:  var x = 1 ; x === 1. Actual: ' + (x));
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1062:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1063:13: 'Error' is declared here.
     }
     
     
diff --git a/tests/baselines/reference/parserS7.3_A1.1_T2.errors.txt b/tests/baselines/reference/parserS7.3_A1.1_T2.errors.txt
index a80fcdc4d51a9..77ff67746e96a 100644
--- a/tests/baselines/reference/parserS7.3_A1.1_T2.errors.txt
+++ b/tests/baselines/reference/parserS7.3_A1.1_T2.errors.txt
@@ -21,7 +21,7 @@ tests/cases/conformance/parser/ecmascript5/parserS7.3_A1.1_T2.ts(17,3): error TS
       $ERROR('#1: var\\nx\\n=\\n1\\n; x === 1. Actual: ' + (x));
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1062:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1063:13: 'Error' is declared here.
     }
     
     
\ No newline at end of file
diff --git a/tests/baselines/reference/parserS7.6_A4.2_T1.errors.txt b/tests/baselines/reference/parserS7.6_A4.2_T1.errors.txt
index 1046e88309abf..f1703c9f7ef9c 100644
--- a/tests/baselines/reference/parserS7.6_A4.2_T1.errors.txt
+++ b/tests/baselines/reference/parserS7.6_A4.2_T1.errors.txt
@@ -50,70 +50,70 @@ tests/cases/conformance/parser/ecmascript5/parserS7.6_A4.2_T1.ts(142,3): error T
       $ERROR('#А');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1062:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1063:13: 'Error' is declared here.
     }
     var \u0411 = 1;
     if (Б !== 1) {
       $ERROR('#Б');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1062:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1063:13: 'Error' is declared here.
     }
     var \u0412 = 1;
     if (В !== 1) {
       $ERROR('#В');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1062:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1063:13: 'Error' is declared here.
     }
     var \u0413 = 1;
     if (Г !== 1) {
       $ERROR('#Г');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1062:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1063:13: 'Error' is declared here.
     }
     var \u0414 = 1;
     if (Д !== 1) {
       $ERROR('#Д');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1062:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1063:13: 'Error' is declared here.
     }
     var \u0415 = 1;
     if (Е !== 1) {
       $ERROR('#Е');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1062:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1063:13: 'Error' is declared here.
     }
     var \u0416 = 1;
     if (Ж !== 1) {
       $ERROR('#Ж');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1062:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1063:13: 'Error' is declared here.
     }
     var \u0417 = 1;
     if (З !== 1) {
       $ERROR('#З');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1062:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1063:13: 'Error' is declared here.
     }
     var \u0418 = 1;
     if (И !== 1) {
       $ERROR('#И');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1062:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1063:13: 'Error' is declared here.
     }
     var \u0419 = 1;
     if (Й !== 1) {
       $ERROR('#Й');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1062:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1063:13: 'Error' is declared here.
     }
     var \u041A = 1;
     if (К !== 1) {
diff --git a/tests/baselines/reference/parserUnicode1.errors.txt b/tests/baselines/reference/parserUnicode1.errors.txt
index 335c136388c61..1cc793e66da1e 100644
--- a/tests/baselines/reference/parserUnicode1.errors.txt
+++ b/tests/baselines/reference/parserUnicode1.errors.txt
@@ -11,13 +11,13 @@ tests/cases/conformance/parser/ecmascript5/parserUnicode1.ts(10,5): error TS2552
         $ERROR('#6.1: var \\u0078x = 1; xx === 6. Actual: ' + (xx));
         ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1062:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1063:13: 'Error' is declared here.
       }
     }
     catch (e) {
         $ERROR('#6.2: var \\u0078x = 1; xx === 6. Actual: ' + (xx));
         ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1062:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1063:13: 'Error' is declared here.
     
     }
\ No newline at end of file
diff --git a/tests/baselines/reference/parserharness.symbols b/tests/baselines/reference/parserharness.symbols
index 8ca32f300e875..62604cadf5a19 100644
--- a/tests/baselines/reference/parserharness.symbols
+++ b/tests/baselines/reference/parserharness.symbols
@@ -3809,7 +3809,7 @@ module Harness {
 >path.match : Symbol(String.match, Decl(lib.es5.d.ts, --, --))
 >path : Symbol(path, Decl(parserharness.ts, 1285, 36))
 >match : Symbol(String.match, Decl(lib.es5.d.ts, --, --))
->0 : Symbol(BaseRegExpArray[0], Decl(lib.es5.d.ts, --, --))
+>0 : Symbol(RegExpMatchArray[0], Decl(lib.es5.d.ts, --, --))
 
             var code = readFile(path);
 >code : Symbol(code, Decl(parserharness.ts, 1288, 15))
@@ -3947,7 +3947,7 @@ module Harness {
 >lastUnit : Symbol(lastUnit, Decl(parserharness.ts, 1326, 15))
 >name : Symbol(TestCaseParser.TestUnitData.name, Decl(parserharness.ts, 1422, 28))
 >match : Symbol(String.match, Decl(lib.es5.d.ts, --, --))
->0 : Symbol(BaseRegExpArray[0], Decl(lib.es5.d.ts, --, --))
+>0 : Symbol(RegExpMatchArray[0], Decl(lib.es5.d.ts, --, --))
 
             var dependencies = units.slice(0, units.length - 1);
 >dependencies : Symbol(dependencies, Decl(parserharness.ts, 1329, 15))
@@ -5700,7 +5700,7 @@ module Harness {
 >path.match : Symbol(String.match, Decl(lib.es5.d.ts, --, --))
 >path : Symbol(path, Decl(parserharness.ts, 1869, 38))
 >match : Symbol(String.match, Decl(lib.es5.d.ts, --, --))
->0 : Symbol(BaseRegExpArray[0], Decl(lib.es5.d.ts, --, --))
+>0 : Symbol(RegExpMatchArray[0], Decl(lib.es5.d.ts, --, --))
 >callback : Symbol(callback, Decl(parserharness.ts, 1869, 51))
         }
 
diff --git a/tests/baselines/reference/promisePermutations.errors.txt b/tests/baselines/reference/promisePermutations.errors.txt
index 069760228de90..8b90ae101d0ea 100644
--- a/tests/baselines/reference/promisePermutations.errors.txt
+++ b/tests/baselines/reference/promisePermutations.errors.txt
@@ -447,7 +447,7 @@ tests/cases/compiler/promisePermutations.ts(160,21): error TS2769: No overload m
 !!! error TS2769:   The last overload gave the following error.
 !!! error TS2769:     Argument of type '(x: any) => IPromise<string>' is not assignable to parameter of type '(error: any) => Promise<number>'.
 !!! error TS2769:       Property 'catch' is missing in type 'IPromise<string>' but required in type 'Promise<number>'.
-!!! related TS2728 /.ts/lib.es5.d.ts:1538:5: 'catch' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1539:5: 'catch' is declared here.
 !!! related TS2771 tests/cases/compiler/promisePermutations.ts:5:5: The last overload is declared here.
     var s10g = s10.then(testFunctionP, nIPromise, sIPromise).then(sPromise, sIPromise, sIPromise); // ok
     
diff --git a/tests/baselines/reference/promisePermutations2.errors.txt b/tests/baselines/reference/promisePermutations2.errors.txt
index 570f1911c9e4c..a22088fb61714 100644
--- a/tests/baselines/reference/promisePermutations2.errors.txt
+++ b/tests/baselines/reference/promisePermutations2.errors.txt
@@ -351,7 +351,7 @@ tests/cases/compiler/promisePermutations2.ts(159,21): error TS2345: Argument of
                                        ~~~~~~~~~
 !!! error TS2345: Argument of type '(x: any) => IPromise<string>' is not assignable to parameter of type '(error: any) => Promise<number>'.
 !!! error TS2345:   Property 'catch' is missing in type 'IPromise<string>' but required in type 'Promise<number>'.
-!!! related TS2728 /.ts/lib.es5.d.ts:1538:5: 'catch' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1539:5: 'catch' is declared here.
     var s10g = s10.then(testFunctionP, nIPromise, sIPromise).then(sPromise, sIPromise, sIPromise); // ok
     
     var r11: IPromise<number>;
diff --git a/tests/baselines/reference/promisePermutations3.errors.txt b/tests/baselines/reference/promisePermutations3.errors.txt
index ad198fb310013..bfe5ba9d71c97 100644
--- a/tests/baselines/reference/promisePermutations3.errors.txt
+++ b/tests/baselines/reference/promisePermutations3.errors.txt
@@ -398,7 +398,7 @@ tests/cases/compiler/promisePermutations3.ts(165,21): error TS2345: Argument of
 !!! error TS2769:   The last overload gave the following error.
 !!! error TS2769:     Argument of type '(x: any) => IPromise<string>' is not assignable to parameter of type '(error: any) => Promise<number>'.
 !!! error TS2769:       Property 'catch' is missing in type 'IPromise<string>' but required in type 'Promise<number>'.
-!!! related TS2728 /.ts/lib.es5.d.ts:1538:5: 'catch' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1539:5: 'catch' is declared here.
 !!! related TS2771 tests/cases/compiler/promisePermutations3.ts:7:5: The last overload is declared here.
     var s10g = s10.then(testFunctionP, nIPromise, sIPromise).then(sPromise, sIPromise, sIPromise); // ok
     
@@ -445,5 +445,5 @@ tests/cases/compiler/promisePermutations3.ts(165,21): error TS2345: Argument of
                         ~~~~~~~~~~~~~~~
 !!! error TS2345: Argument of type '{ <T>(x: T): IPromise<T>; <T>(x: T, y: T): Promise<T>; }' is not assignable to parameter of type '(value: (x: any) => any) => Promise<unknown>'.
 !!! error TS2345:   Property 'catch' is missing in type 'IPromise<any>' but required in type 'Promise<unknown>'.
-!!! related TS2728 /.ts/lib.es5.d.ts:1538:5: 'catch' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1539:5: 'catch' is declared here.
     var s12c = s12.then(testFunction12P, testFunction12, testFunction12); // ok
\ No newline at end of file
diff --git a/tests/baselines/reference/redefineArray.errors.txt b/tests/baselines/reference/redefineArray.errors.txt
index cc717eb669634..97a7fb2124ea6 100644
--- a/tests/baselines/reference/redefineArray.errors.txt
+++ b/tests/baselines/reference/redefineArray.errors.txt
@@ -5,4 +5,4 @@ tests/cases/compiler/redefineArray.ts(1,1): error TS2741: Property 'isArray' is
     Array = function (n:number, s:string) {return n;};
     ~~~~~
 !!! error TS2741: Property 'isArray' is missing in type '<T>(n: number, s: string) => number' but required in type 'ArrayConstructor'.
-!!! related TS2728 /.ts/lib.es5.d.ts:1489:5: 'isArray' is declared here.
\ No newline at end of file
+!!! related TS2728 /.ts/lib.es5.d.ts:1490:5: 'isArray' is declared here.
\ No newline at end of file
diff --git a/tests/baselines/reference/scannerS7.2_A1.5_T2.errors.txt b/tests/baselines/reference/scannerS7.2_A1.5_T2.errors.txt
index 24ea8ea6da466..d5c5b74d8b6a9 100644
--- a/tests/baselines/reference/scannerS7.2_A1.5_T2.errors.txt
+++ b/tests/baselines/reference/scannerS7.2_A1.5_T2.errors.txt
@@ -19,7 +19,7 @@ tests/cases/conformance/scanner/ecmascript5/scannerS7.2_A1.5_T2.ts(20,3): error
       $ERROR('#1: eval("\\u00A0var x\\u00A0= 1\\u00A0"); x === 1. Actual: ' + (x));
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1062:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1063:13: 'Error' is declared here.
     }
     
     //CHECK#2
@@ -28,7 +28,7 @@ tests/cases/conformance/scanner/ecmascript5/scannerS7.2_A1.5_T2.ts(20,3): error
       $ERROR('#2:  var x = 1 ; x === 1. Actual: ' + (x));
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1062:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1063:13: 'Error' is declared here.
     }
     
     
diff --git a/tests/baselines/reference/scannerS7.3_A1.1_T2.errors.txt b/tests/baselines/reference/scannerS7.3_A1.1_T2.errors.txt
index c1f1822ccc568..0a69936f51505 100644
--- a/tests/baselines/reference/scannerS7.3_A1.1_T2.errors.txt
+++ b/tests/baselines/reference/scannerS7.3_A1.1_T2.errors.txt
@@ -21,7 +21,7 @@ tests/cases/conformance/scanner/ecmascript5/scannerS7.3_A1.1_T2.ts(17,3): error
       $ERROR('#1: var\\nx\\n=\\n1\\n; x === 1. Actual: ' + (x));
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1062:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1063:13: 'Error' is declared here.
     }
     
     
\ No newline at end of file
diff --git a/tests/baselines/reference/scannerS7.6_A4.2_T1.errors.txt b/tests/baselines/reference/scannerS7.6_A4.2_T1.errors.txt
index 74b70c26ed781..d74d50f222102 100644
--- a/tests/baselines/reference/scannerS7.6_A4.2_T1.errors.txt
+++ b/tests/baselines/reference/scannerS7.6_A4.2_T1.errors.txt
@@ -50,70 +50,70 @@ tests/cases/conformance/scanner/ecmascript5/scannerS7.6_A4.2_T1.ts(142,3): error
       $ERROR('#А');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1062:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1063:13: 'Error' is declared here.
     }
     var \u0411 = 1;
     if (Б !== 1) {
       $ERROR('#Б');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1062:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1063:13: 'Error' is declared here.
     }
     var \u0412 = 1;
     if (В !== 1) {
       $ERROR('#В');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1062:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1063:13: 'Error' is declared here.
     }
     var \u0413 = 1;
     if (Г !== 1) {
       $ERROR('#Г');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1062:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1063:13: 'Error' is declared here.
     }
     var \u0414 = 1;
     if (Д !== 1) {
       $ERROR('#Д');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1062:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1063:13: 'Error' is declared here.
     }
     var \u0415 = 1;
     if (Е !== 1) {
       $ERROR('#Е');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1062:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1063:13: 'Error' is declared here.
     }
     var \u0416 = 1;
     if (Ж !== 1) {
       $ERROR('#Ж');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1062:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1063:13: 'Error' is declared here.
     }
     var \u0417 = 1;
     if (З !== 1) {
       $ERROR('#З');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1062:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1063:13: 'Error' is declared here.
     }
     var \u0418 = 1;
     if (И !== 1) {
       $ERROR('#И');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1062:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1063:13: 'Error' is declared here.
     }
     var \u0419 = 1;
     if (Й !== 1) {
       $ERROR('#Й');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1062:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1063:13: 'Error' is declared here.
     }
     var \u041A = 1;
     if (К !== 1) {
diff --git a/tests/baselines/reference/useRegexpGroups.symbols b/tests/baselines/reference/useRegexpGroups.symbols
index 623ddea6ba245..62347a09a965c 100644
--- a/tests/baselines/reference/useRegexpGroups.symbols
+++ b/tests/baselines/reference/useRegexpGroups.symbols
@@ -11,7 +11,7 @@ let result = re.exec("2015-01-02");
 let date = result[0];
 >date : Symbol(date, Decl(useRegexpGroups.ts, 3, 3))
 >result : Symbol(result, Decl(useRegexpGroups.ts, 1, 3))
->0 : Symbol(BaseRegExpArray[0], Decl(lib.es5.d.ts, --, --))
+>0 : Symbol(RegExpExecArray[0], Decl(lib.es5.d.ts, --, --))
 
 let year1 = result.groups.year;
 >year1 : Symbol(year1, Decl(useRegexpGroups.ts, 5, 3))