diff --git a/modules/@angular/benchpress/src/webdriver/firefox_driver_extension.ts b/modules/@angular/benchpress/src/webdriver/firefox_driver_extension.ts
index 030ee28117..46ee36a87d 100644
--- a/modules/@angular/benchpress/src/webdriver/firefox_driver_extension.ts
+++ b/modules/@angular/benchpress/src/webdriver/firefox_driver_extension.ts
@@ -8,7 +8,7 @@
 
 import {Injectable} from '@angular/core';
 
-import {StringWrapper, isPresent} from '../facade/lang';
+import {isPresent} from '../facade/lang';
 import {WebDriverAdapter} from '../web_driver_adapter';
 import {PerfLogEvent, PerfLogFeatures, WebDriverExtension} from '../web_driver_extension';
 
@@ -48,6 +48,6 @@ export class FirefoxDriverExtension extends WebDriverExtension {
   perfLogFeatures(): PerfLogFeatures { return new PerfLogFeatures({render: true, gc: true}); }
 
   supports(capabilities: {[key: string]: any}): boolean {
-    return StringWrapper.equals(capabilities['browserName'].toLowerCase(), 'firefox');
+    return capabilities['browserName'].toLowerCase() === 'firefox';
   }
 }
diff --git a/modules/@angular/benchpress/src/webdriver/ios_driver_extension.ts b/modules/@angular/benchpress/src/webdriver/ios_driver_extension.ts
index 00bc1d9808..3fdb818f08 100644
--- a/modules/@angular/benchpress/src/webdriver/ios_driver_extension.ts
+++ b/modules/@angular/benchpress/src/webdriver/ios_driver_extension.ts
@@ -8,7 +8,7 @@
 
 import {Injectable} from '@angular/core';
 
-import {StringWrapper, isBlank, isPresent} from '../facade/lang';
+import {isBlank, isPresent} from '../facade/lang';
 import {WebDriverAdapter} from '../web_driver_adapter';
 import {PerfLogEvent, PerfLogFeatures, WebDriverExtension} from '../web_driver_extension';
 
@@ -42,7 +42,7 @@ export class IOsDriverExtension extends WebDriverExtension {
           var records: any[] = [];
           entries.forEach(entry => {
             var message = JSON.parse(entry['message'])['message'];
-            if (StringWrapper.equals(message['method'], 'Timeline.eventRecorded')) {
+            if (message['method'] === 'Timeline.eventRecorded') {
               records.push(message['params']['record']);
             }
           });
@@ -62,19 +62,16 @@ export class IOsDriverExtension extends WebDriverExtension {
       var startTime = record['startTime'];
       var endTime = record['endTime'];
 
-      if (StringWrapper.equals(type, 'FunctionCall') &&
-          (isBlank(data) || !StringWrapper.equals(data['scriptName'], 'InjectedScript'))) {
+      if (type === 'FunctionCall' && (isBlank(data) || data['scriptName'] !== 'InjectedScript')) {
         events.push(createStartEvent('script', startTime));
         endEvent = createEndEvent('script', endTime);
-      } else if (StringWrapper.equals(type, 'Time')) {
+      } else if (type === 'Time') {
         events.push(createMarkStartEvent(data['message'], startTime));
-      } else if (StringWrapper.equals(type, 'TimeEnd')) {
+      } else if (type === 'TimeEnd') {
         events.push(createMarkEndEvent(data['message'], startTime));
       } else if (
-          StringWrapper.equals(type, 'RecalculateStyles') || StringWrapper.equals(type, 'Layout') ||
-          StringWrapper.equals(type, 'UpdateLayerTree') || StringWrapper.equals(type, 'Paint') ||
-          StringWrapper.equals(type, 'Rasterize') ||
-          StringWrapper.equals(type, 'CompositeLayers')) {
+          type === 'RecalculateStyles' || type === 'Layout' || type === 'UpdateLayerTree' ||
+          type === 'Paint' || type === 'Rasterize' || type === 'CompositeLayers') {
         events.push(createStartEvent('render', startTime));
         endEvent = createEndEvent('render', endTime);
       }
@@ -92,7 +89,7 @@ export class IOsDriverExtension extends WebDriverExtension {
   perfLogFeatures(): PerfLogFeatures { return new PerfLogFeatures({render: true}); }
 
   supports(capabilities: {[key: string]: any}): boolean {
-    return StringWrapper.equals(capabilities['browserName'].toLowerCase(), 'safari');
+    return capabilities['browserName'].toLowerCase() === 'safari';
   }
 }
 
diff --git a/modules/@angular/benchpress/test/web_driver_extension_spec.ts b/modules/@angular/benchpress/test/web_driver_extension_spec.ts
index eb968cfa5e..3609100d32 100644
--- a/modules/@angular/benchpress/test/web_driver_extension_spec.ts
+++ b/modules/@angular/benchpress/test/web_driver_extension_spec.ts
@@ -9,7 +9,7 @@
 import {AsyncTestCompleter, describe, expect, inject, it} from '@angular/core/testing/testing_internal';
 
 import {Options, ReflectiveInjector, WebDriverExtension} from '../index';
-import {StringWrapper, isPresent} from '../src/facade/lang';
+import {isPresent} from '../src/facade/lang';
 
 export function main() {
   function createExtension(ids: any[], caps: any) {
@@ -52,6 +52,6 @@ class MockExtension extends WebDriverExtension {
   constructor(public id: string) { super(); }
 
   supports(capabilities: {[key: string]: any}): boolean {
-    return StringWrapper.equals(capabilities['browser'], this.id);
+    return capabilities['browser'] === this.id;
   }
 }
diff --git a/modules/@angular/common/test/pipes/json_pipe_spec.ts b/modules/@angular/common/test/pipes/json_pipe_spec.ts
index 84fe860378..7c11c5ea33 100644
--- a/modules/@angular/common/test/pipes/json_pipe_spec.ts
+++ b/modules/@angular/common/test/pipes/json_pipe_spec.ts
@@ -11,7 +11,7 @@ import {Component} from '@angular/core';
 import {TestBed, async} from '@angular/core/testing';
 import {expect} from '@angular/platform-browser/testing/matchers';
 
-import {Json, StringWrapper} from '../../src/facade/lang';
+import {Json} from '../../src/facade/lang';
 
 export function main() {
   describe('JsonPipe', () => {
@@ -20,7 +20,7 @@ export function main() {
     var inceptionObjString: string;
     var pipe: JsonPipe;
 
-    function normalize(obj: string): string { return StringWrapper.replace(obj, regNewLine, ''); }
+    function normalize(obj: string): string { return obj.replace(regNewLine, ''); }
 
     beforeEach(() => {
       inceptionObj = {dream: {dream: {dream: 'Limbo'}}};
diff --git a/modules/@angular/compiler/src/css_parser/css_lexer.ts b/modules/@angular/compiler/src/css_parser/css_lexer.ts
index 3966f203ed..dc690a33ce 100644
--- a/modules/@angular/compiler/src/css_parser/css_lexer.ts
+++ b/modules/@angular/compiler/src/css_parser/css_lexer.ts
@@ -9,7 +9,7 @@
 
 import * as chars from '../chars';
 import {BaseError} from '../facade/errors';
-import {StringWrapper, isPresent} from '../facade/lang';
+import {isPresent} from '../facade/lang';
 
 export enum CssTokenType {
   EOF,
@@ -155,7 +155,7 @@ export class CssScanner {
   }
 
   peekAt(index: number): number {
-    return index >= this.length ? chars.$EOF : StringWrapper.charCodeAt(this.input, index);
+    return index >= this.length ? chars.$EOF : this.input.charCodeAt(index);
   }
 
   consumeEmptyStatements(): void {
@@ -310,7 +310,7 @@ export class CssScanner {
       return this.scanCharacter();
     }
 
-    return this.error(`Unexpected character [${StringWrapper.fromCharCode(peek)}]`);
+    return this.error(`Unexpected character [${String.fromCharCode(peek)}]`);
   }
 
   scanComment(): CssToken {
@@ -476,8 +476,7 @@ export class CssScanner {
     var index: number = this.index;
     var column: number = this.column;
     var line: number = this.line;
-    errorTokenValue =
-        isPresent(errorTokenValue) ? errorTokenValue : StringWrapper.fromCharCode(this.peek);
+    errorTokenValue = isPresent(errorTokenValue) ? errorTokenValue : String.fromCharCode(this.peek);
     var invalidToken = new CssToken(index, column, line, CssTokenType.Invalid, errorTokenValue);
     var errorMessage =
         generateErrorMessage(this.input, message, errorTokenValue, index, line, column);
@@ -696,11 +695,11 @@ function isValidCssCharacter(code: number, mode: CssLexerMode): boolean {
 }
 
 function charCode(input: string, index: number): number {
-  return index >= input.length ? chars.$EOF : StringWrapper.charCodeAt(input, index);
+  return index >= input.length ? chars.$EOF : input.charCodeAt(index);
 }
 
 function charStr(code: number): string {
-  return StringWrapper.fromCharCode(code);
+  return String.fromCharCode(code);
 }
 
 export function isNewline(code: number): boolean {
diff --git a/modules/@angular/compiler/src/expression_parser/lexer.ts b/modules/@angular/compiler/src/expression_parser/lexer.ts
index b40ac2c3bc..a03521f7a7 100644
--- a/modules/@angular/compiler/src/expression_parser/lexer.ts
+++ b/modules/@angular/compiler/src/expression_parser/lexer.ts
@@ -8,7 +8,7 @@
 
 import {Injectable} from '@angular/core';
 import * as chars from '../chars';
-import {NumberWrapper, StringJoiner, StringWrapper, isPresent} from '../facade/lang';
+import {NumberWrapper, StringJoiner, isPresent} from '../facade/lang';
 
 export enum TokenType {
   Character,
@@ -93,7 +93,7 @@ export class Token {
 }
 
 function newCharacterToken(index: number, code: number): Token {
-  return new Token(index, TokenType.Character, code, StringWrapper.fromCharCode(code));
+  return new Token(index, TokenType.Character, code, String.fromCharCode(code));
 }
 
 function newIdentifierToken(index: number, text: string): Token {
@@ -133,8 +133,7 @@ class _Scanner {
   }
 
   advance() {
-    this.peek =
-        ++this.index >= this.length ? chars.$EOF : StringWrapper.charCodeAt(this.input, this.index);
+    this.peek = ++this.index >= this.length ? chars.$EOF : this.input.charCodeAt(this.index);
   }
 
   scanToken(): Token {
@@ -146,7 +145,7 @@ class _Scanner {
         peek = chars.$EOF;
         break;
       } else {
-        peek = StringWrapper.charCodeAt(input, index);
+        peek = input.charCodeAt(index);
       }
     }
 
@@ -187,16 +186,16 @@ class _Scanner {
       case chars.$SLASH:
       case chars.$PERCENT:
       case chars.$CARET:
-        return this.scanOperator(start, StringWrapper.fromCharCode(peek));
+        return this.scanOperator(start, String.fromCharCode(peek));
       case chars.$QUESTION:
         return this.scanComplexOperator(start, '?', chars.$PERIOD, '.');
       case chars.$LT:
       case chars.$GT:
-        return this.scanComplexOperator(start, StringWrapper.fromCharCode(peek), chars.$EQ, '=');
+        return this.scanComplexOperator(start, String.fromCharCode(peek), chars.$EQ, '=');
       case chars.$BANG:
       case chars.$EQ:
         return this.scanComplexOperator(
-            start, StringWrapper.fromCharCode(peek), chars.$EQ, '=', chars.$EQ, '=');
+            start, String.fromCharCode(peek), chars.$EQ, '=', chars.$EQ, '=');
       case chars.$AMPERSAND:
         return this.scanComplexOperator(start, '&', chars.$AMPERSAND, '&');
       case chars.$BAR:
@@ -207,7 +206,7 @@ class _Scanner {
     }
 
     this.advance();
-    return this.error(`Unexpected character [${StringWrapper.fromCharCode(peek)}]`, 0);
+    return this.error(`Unexpected character [${String.fromCharCode(peek)}]`, 0);
   }
 
   scanCharacter(start: number, code: number): Token {
@@ -310,7 +309,7 @@ class _Scanner {
           unescapedCode = unescape(this.peek);
           this.advance();
         }
-        buffer.add(StringWrapper.fromCharCode(unescapedCode));
+        buffer.add(String.fromCharCode(unescapedCode));
         marker = this.index;
       } else if (this.peek == chars.$EOF) {
         return this.error('Unterminated quote', 0);
diff --git a/modules/@angular/compiler/src/expression_parser/parser.ts b/modules/@angular/compiler/src/expression_parser/parser.ts
index 717f7b3045..c7bfe4db84 100644
--- a/modules/@angular/compiler/src/expression_parser/parser.ts
+++ b/modules/@angular/compiler/src/expression_parser/parser.ts
@@ -9,7 +9,7 @@
 import {Injectable} from '@angular/core';
 
 import * as chars from '../chars';
-import {StringWrapper, escapeRegExp, isBlank, isPresent} from '../facade/lang';
+import {escapeRegExp, isBlank, isPresent} from '../facade/lang';
 import {DEFAULT_INTERPOLATION_CONFIG, InterpolationConfig} from '../ml_parser/interpolation_config';
 
 import {AST, ASTWithSource, AstVisitor, Binary, BindingPipe, Chain, Conditional, EmptyExpr, FunctionCall, ImplicitReceiver, Interpolation, KeyedRead, KeyedWrite, LiteralArray, LiteralMap, LiteralPrimitive, MethodCall, ParseSpan, ParserError, PrefixNot, PropertyRead, PropertyWrite, Quote, SafeMethodCall, SafePropertyRead, TemplateBinding} from './ast';
@@ -122,7 +122,7 @@ export class Parser {
       input: string, location: string,
       interpolationConfig: InterpolationConfig = DEFAULT_INTERPOLATION_CONFIG): SplitInterpolation {
     const regexp = _createInterpolateRegExp(interpolationConfig);
-    const parts = StringWrapper.split(input, regexp);
+    const parts = input.split(regexp);
     if (parts.length <= 1) {
       return null;
     }
@@ -160,8 +160,8 @@ export class Parser {
   private _commentStart(input: string): number {
     var outerQuote: number = null;
     for (let i = 0; i < input.length - 1; i++) {
-      const char = StringWrapper.charCodeAt(input, i);
-      const nextChar = StringWrapper.charCodeAt(input, i + 1);
+      const char = input.charCodeAt(i);
+      const nextChar = input.charCodeAt(i + 1);
 
       if (char === chars.$SLASH && nextChar == chars.$SLASH && isBlank(outerQuote)) return i;
 
@@ -177,7 +177,7 @@ export class Parser {
   private _checkNoInterpolation(
       input: string, location: any, interpolationConfig: InterpolationConfig): void {
     var regexp = _createInterpolateRegExp(interpolationConfig);
-    var parts = StringWrapper.split(input, regexp);
+    var parts = input.split(regexp);
     if (parts.length > 1) {
       this._reportError(
           `Got interpolation (${interpolationConfig.start}${interpolationConfig.end}) where expression was expected`,
@@ -239,7 +239,7 @@ export class _ParseAST {
 
   expectCharacter(code: number) {
     if (this.optionalCharacter(code)) return;
-    this.error(`Missing expected ${StringWrapper.fromCharCode(code)}`);
+    this.error(`Missing expected ${String.fromCharCode(code)}`);
   }
 
   optionalOperator(op: string): boolean {
diff --git a/modules/@angular/compiler/src/output/abstract_emitter.ts b/modules/@angular/compiler/src/output/abstract_emitter.ts
index f9ed12a5fe..535ca34530 100644
--- a/modules/@angular/compiler/src/output/abstract_emitter.ts
+++ b/modules/@angular/compiler/src/output/abstract_emitter.ts
@@ -6,7 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {StringWrapper, isBlank, isPresent, isString} from '../facade/lang';
+import {isBlank, isPresent, isString} from '../facade/lang';
 
 import * as o from './output_ast';
 
@@ -409,18 +409,17 @@ export function escapeIdentifier(
   if (isBlank(input)) {
     return null;
   }
-  var body = StringWrapper.replaceAllMapped(
-      input, _SINGLE_QUOTE_ESCAPE_STRING_RE, (match: any /** TODO #9100 */) => {
-        if (match[0] == '$') {
-          return escapeDollar ? '\\$' : '$';
-        } else if (match[0] == '\n') {
-          return '\\n';
-        } else if (match[0] == '\r') {
-          return '\\r';
-        } else {
-          return `\\${match[0]}`;
-        }
-      });
+  var body = input.replace(_SINGLE_QUOTE_ESCAPE_STRING_RE, (...match: string[]) => {
+    if (match[0] == '$') {
+      return escapeDollar ? '\\$' : '$';
+    } else if (match[0] == '\n') {
+      return '\\n';
+    } else if (match[0] == '\r') {
+      return '\\r';
+    } else {
+      return `\\${match[0]}`;
+    }
+  });
   let requiresQuotes = alwaysQuote || !_LEGAL_IDENTIFIER_RE.test(body);
   return requiresQuotes ? `'${body}'` : body;
 }
diff --git a/modules/@angular/compiler/src/style_url_resolver.ts b/modules/@angular/compiler/src/style_url_resolver.ts
index 3ac5aac09e..e60030c2f5 100644
--- a/modules/@angular/compiler/src/style_url_resolver.ts
+++ b/modules/@angular/compiler/src/style_url_resolver.ts
@@ -9,7 +9,7 @@
 // Some of the code comes from WebComponents.JS
 // https://github.com/webcomponents/webcomponentsjs/blob/master/src/HTMLImports/path.js
 
-import {StringWrapper, isBlank, isPresent} from './facade/lang';
+import {isBlank, isPresent} from './facade/lang';
 
 import {UrlResolver} from './url_resolver';
 
@@ -30,8 +30,8 @@ export function isStyleUrlResolvable(url: string): boolean {
 export function extractStyleUrls(
     resolver: UrlResolver, baseUrl: string, cssText: string): StyleWithImports {
   var foundUrls: string[] = [];
-  var modifiedCssText = StringWrapper.replaceAllMapped(cssText, _cssImportRe, (m: string[]) => {
-    var url = isPresent(m[1]) ? m[1] : m[2];
+  var modifiedCssText = cssText.replace(_cssImportRe, function(...m: string[]) {
+    const url = isPresent(m[1]) ? m[1] : m[2];
     if (!isStyleUrlResolvable(url)) {
       // Do not attempt to resolve non-package absolute URLs with URI scheme
       return m[0];
diff --git a/modules/@angular/compiler/src/url_resolver.ts b/modules/@angular/compiler/src/url_resolver.ts
index 27dfd2bd5c..fc86383f07 100644
--- a/modules/@angular/compiler/src/url_resolver.ts
+++ b/modules/@angular/compiler/src/url_resolver.ts
@@ -8,7 +8,7 @@
 
 import {Inject, Injectable, PACKAGE_ROOT_URL} from '@angular/core';
 
-import {StringWrapper, isBlank, isPresent} from './facade/lang';
+import {isBlank, isPresent} from './facade/lang';
 
 
 const _ASSET_SCHEME = 'asset:';
@@ -74,8 +74,8 @@ export class UrlResolver {
         var pathSegements = path.split(/\//);
         resolvedUrl = `asset:${pathSegements[0]}/lib/${pathSegements.slice(1).join('/')}`;
       } else {
-        prefix = StringWrapper.stripRight(prefix, '/');
-        path = StringWrapper.stripLeft(path, '/');
+        prefix = prefix.replace(/\/+$/, '');
+        path = path.replace(/^\/+/, '');
         return `${prefix}/${path}`;
       }
     }
diff --git a/modules/@angular/compiler/src/util.ts b/modules/@angular/compiler/src/util.ts
index 0cc6789032..e46b8d3653 100644
--- a/modules/@angular/compiler/src/util.ts
+++ b/modules/@angular/compiler/src/util.ts
@@ -7,7 +7,7 @@
  */
 
 import {CompileTokenMetadata} from './compile_metadata';
-import {StringWrapper, isArray, isBlank, isPresent, isPrimitive, isStrictStringMap} from './facade/lang';
+import {isArray, isBlank, isPresent, isPrimitive, isStrictStringMap} from './facade/lang';
 import * as o from './output/output_ast';
 
 export const MODULE_SUFFIX = '';
@@ -15,8 +15,7 @@ export const MODULE_SUFFIX = '';
 var CAMEL_CASE_REGEXP = /([A-Z])/g;
 
 export function camelCaseToDashCase(input: string): string {
-  return StringWrapper.replaceAllMapped(
-      input, CAMEL_CASE_REGEXP, (m: string[]) => '-' + m[1].toLowerCase());
+  return input.replace(CAMEL_CASE_REGEXP, (...m: any[]) => '-' + m[1].toLowerCase());
 }
 
 export function splitAtColon(input: string, defaultValues: string[]): string[] {
@@ -34,7 +33,7 @@ function _splitAt(input: string, character: string, defaultValues: string[]): st
 }
 
 export function sanitizeIdentifier(name: string): string {
-  return StringWrapper.replaceAll(name, /\W/g, '_');
+  return name.replace(/\W/g, '_');
 }
 
 export function visitValue(value: any, visitor: ValueVisitor, context: any): any {
diff --git a/modules/@angular/compiler/src/view_compiler/event_binder.ts b/modules/@angular/compiler/src/view_compiler/event_binder.ts
index 504923a7df..0a56f2b9e6 100644
--- a/modules/@angular/compiler/src/view_compiler/event_binder.ts
+++ b/modules/@angular/compiler/src/view_compiler/event_binder.ts
@@ -7,7 +7,7 @@
  */
 
 import {CompileDirectiveMetadata} from '../compile_metadata';
-import {StringWrapper, isPresent} from '../facade/lang';
+import {isPresent} from '../facade/lang';
 import {identifierToken} from '../identifiers';
 import * as o from '../output/output_ast';
 import {BoundEventAst, DirectiveAst} from '../template_parser/template_ast';
@@ -200,5 +200,5 @@ function convertStmtIntoExpression(stmt: o.Statement): o.Expression {
 }
 
 function santitizeEventName(name: string): string {
-  return StringWrapper.replaceAll(name, /[^a-zA-Z_]/g, '_');
+  return name.replace(/[^a-zA-Z_]/g, '_');
 }
diff --git a/modules/@angular/compiler/src/view_compiler/view_builder.ts b/modules/@angular/compiler/src/view_compiler/view_builder.ts
index 4fdb24f7d1..04632f8788 100644
--- a/modules/@angular/compiler/src/view_compiler/view_builder.ts
+++ b/modules/@angular/compiler/src/view_compiler/view_builder.ts
@@ -10,7 +10,7 @@ import {ViewEncapsulation} from '@angular/core';
 
 import {CompileDirectiveMetadata, CompileIdentifierMetadata, CompileTokenMetadata} from '../compile_metadata';
 import {ListWrapper} from '../facade/collection';
-import {StringWrapper, isPresent} from '../facade/lang';
+import {isPresent} from '../facade/lang';
 import {Identifiers, identifierToken, resolveIdentifier} from '../identifiers';
 import * as o from '../output/output_ast';
 import {ChangeDetectorStatus, ViewType, isDefaultChangeDetectionStrategy} from '../private_import_core';
@@ -376,7 +376,7 @@ function mapToKeyValueArray(data: {[key: string]: string}): string[][] {
   Object.keys(data).forEach(name => { entryArray.push([name, data[name]]); });
   // We need to sort to get a defined output order
   // for tests and for caching generated artifacts...
-  ListWrapper.sort(entryArray, (entry1, entry2) => StringWrapper.compare(entry1[0], entry2[0]));
+  ListWrapper.sort(entryArray);
   return entryArray;
 }
 
diff --git a/modules/@angular/compiler/test/expression_parser/unparser.ts b/modules/@angular/compiler/test/expression_parser/unparser.ts
index 54ddf0790c..2c87e998c8 100644
--- a/modules/@angular/compiler/test/expression_parser/unparser.ts
+++ b/modules/@angular/compiler/test/expression_parser/unparser.ts
@@ -7,7 +7,7 @@
  */
 
 import {AST, AstVisitor, Binary, BindingPipe, Chain, Conditional, FunctionCall, ImplicitReceiver, Interpolation, KeyedRead, KeyedWrite, LiteralArray, LiteralMap, LiteralPrimitive, MethodCall, PrefixNot, PropertyRead, PropertyWrite, Quote, SafeMethodCall, SafePropertyRead} from '../../src/expression_parser/ast';
-import {StringWrapper, isString} from '../../src/facade/lang';
+import {isString} from '../../src/facade/lang';
 import {DEFAULT_INTERPOLATION_CONFIG, InterpolationConfig} from '../../src/ml_parser/interpolation_config';
 
 class Unparser implements AstVisitor {
@@ -134,7 +134,7 @@ class Unparser implements AstVisitor {
 
   visitLiteralPrimitive(ast: LiteralPrimitive, context: any) {
     if (isString(ast.value)) {
-      this._expression += `"${StringWrapper.replaceAll(ast.value, Unparser._quoteRegExp, '\"')}"`;
+      this._expression += `"${ast.value.replace( Unparser._quoteRegExp,  '\"')}"`;
     } else {
       this._expression += `${ast.value}`;
     }
diff --git a/modules/@angular/core/src/application_tokens.ts b/modules/@angular/core/src/application_tokens.ts
index f41ad681d6..b33e364f90 100644
--- a/modules/@angular/core/src/application_tokens.ts
+++ b/modules/@angular/core/src/application_tokens.ts
@@ -6,8 +6,6 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {StringWrapper} from '../src/facade/lang';
-
 import {OpaqueToken} from './di';
 
 
@@ -38,7 +36,7 @@ export const APP_ID_RANDOM_PROVIDER = {
 };
 
 function _randomChar(): string {
-  return StringWrapper.fromCharCode(97 + Math.floor(Math.random() * 25));
+  return String.fromCharCode(97 + Math.floor(Math.random() * 25));
 }
 
 /**
diff --git a/modules/@angular/core/test/linker/query_list_spec.ts b/modules/@angular/core/test/linker/query_list_spec.ts
index 6832fa7eb5..bef63834c4 100644
--- a/modules/@angular/core/test/linker/query_list_spec.ts
+++ b/modules/@angular/core/test/linker/query_list_spec.ts
@@ -12,7 +12,6 @@ import {beforeEach, describe, expect, it} from '@angular/core/testing/testing_in
 import {getDOM} from '@angular/platform-browser/src/dom/dom_adapter';
 
 import {iterateListLike} from '../../src/facade/collection';
-import {StringWrapper} from '../../src/facade/lang';
 
 interface _JsQueryList {
   filter(c: any): any;
@@ -104,8 +103,8 @@ export function main() {
     it('should support toString', () => {
       queryList.reset(['one', 'two']);
       var listString = queryList.toString();
-      expect(StringWrapper.contains(listString, 'one')).toBeTruthy();
-      expect(StringWrapper.contains(listString, 'two')).toBeTruthy();
+      expect(listString.indexOf('one') != -1).toBeTruthy();
+      expect(listString.indexOf('two') != -1).toBeTruthy();
     });
 
     it('should support first and last', () => {
diff --git a/modules/@angular/facade/src/lang.ts b/modules/@angular/facade/src/lang.ts
index 982528761f..93c4857c5c 100644
--- a/modules/@angular/facade/src/lang.ts
+++ b/modules/@angular/facade/src/lang.ts
@@ -137,73 +137,6 @@ export function stringify(token: any): string {
   return newLineIndex === -1 ? res : res.substring(0, newLineIndex);
 }
 
-export class StringWrapper {
-  static fromCharCode(code: number): string { return String.fromCharCode(code); }
-
-  static charCodeAt(s: string, index: number): number { return s.charCodeAt(index); }
-
-  static split(s: string, regExp: RegExp): string[] { return s.split(regExp); }
-
-  static equals(s: string, s2: string): boolean { return s === s2; }
-
-  static stripLeft(s: string, charVal: string): string {
-    if (s && s.length) {
-      var pos = 0;
-      for (var i = 0; i < s.length; i++) {
-        if (s[i] != charVal) break;
-        pos++;
-      }
-      s = s.substring(pos);
-    }
-    return s;
-  }
-
-  static stripRight(s: string, charVal: string): string {
-    if (s && s.length) {
-      var pos = s.length;
-      for (var i = s.length - 1; i >= 0; i--) {
-        if (s[i] != charVal) break;
-        pos--;
-      }
-      s = s.substring(0, pos);
-    }
-    return s;
-  }
-
-  static replace(s: string, from: string, replace: string): string {
-    return s.replace(from, replace);
-  }
-
-  static replaceAll(s: string, from: RegExp, replace: string): string {
-    return s.replace(from, replace);
-  }
-
-  static slice<T>(s: string, from: number = 0, to: number = null): string {
-    return s.slice(from, to === null ? undefined : to);
-  }
-
-  static replaceAllMapped(s: string, from: RegExp, cb: (m: string[]) => string): string {
-    return s.replace(from, function(...matches: any[]) {
-      // Remove offset & string from the result array
-      matches.splice(-2, 2);
-      // The callback receives match, p1, ..., pn
-      return cb(matches);
-    });
-  }
-
-  static contains(s: string, substr: string): boolean { return s.indexOf(substr) != -1; }
-
-  static compare(a: string, b: string): number {
-    if (a < b) {
-      return -1;
-    } else if (a > b) {
-      return 1;
-    } else {
-      return 0;
-    }
-  }
-}
-
 export class StringJoiner {
   constructor(public parts: string[] = []) {}
 
diff --git a/modules/@angular/facade/test/lang_spec.ts b/modules/@angular/facade/test/lang_spec.ts
index 3b5137ba48..98aaea30f8 100644
--- a/modules/@angular/facade/test/lang_spec.ts
+++ b/modules/@angular/facade/test/lang_spec.ts
@@ -6,7 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {NumberWrapper, StringWrapper, escapeRegExp, hasConstructor} from '../src/lang';
+import {NumberWrapper, escapeRegExp, hasConstructor} from '../src/lang';
 
 class MySuperclass {}
 class MySubclass extends MySuperclass {}
@@ -50,92 +50,4 @@ export function main() {
          () => { expect(NumberWrapper.isNumeric('2a')).toBe(false); });
     });
   });
-
-  describe('String', () => {
-    var s: string;
-
-    describe('slice', () => {
-      beforeEach(() => { s = 'abcdefghij'; });
-
-      it('should return the whole string if neither start nor end are specified',
-         () => { expect(StringWrapper.slice(s)).toEqual('abcdefghij'); });
-
-      it('should return up to the end if end is not specified',
-         () => { expect(StringWrapper.slice(s, 1)).toEqual('bcdefghij'); });
-
-      it('should support negative start',
-         () => { expect(StringWrapper.slice(s, -1)).toEqual('j'); });
-
-      it('should support negative end',
-         () => { expect(StringWrapper.slice(s, -3, -1)).toEqual('hi'); });
-
-      it('should return empty string if start is greater than end', () => {
-        expect(StringWrapper.slice(s, 4, 2)).toEqual('');
-        expect(StringWrapper.slice(s, -2, -4)).toEqual('');
-      });
-    });
-
-    describe('stripLeft', () => {
-      it('should strip the first character of the string if it matches the provided input', () => {
-        var input = '~angular2 is amazing';
-        var expectedOutput = 'angular2 is amazing';
-
-        expect(StringWrapper.stripLeft(input, '~')).toEqual(expectedOutput);
-      });
-
-      it('should keep stripping characters from the start until the first unmatched character',
-         () => {
-           var input = '#####hello';
-           var expectedOutput = 'hello';
-           expect(StringWrapper.stripLeft(input, '#')).toEqual(expectedOutput);
-         });
-
-      it('should not alter the provided input if the first character does not match the provided input',
-         () => {
-           var input = '+angular2 is amazing';
-           expect(StringWrapper.stripLeft(input, '*')).toEqual(input);
-         });
-
-      it('should not do any alterations when an empty string or null value is passed in', () => {
-        expect(StringWrapper.stripLeft('', 'S')).toEqual('');
-        expect(StringWrapper.stripLeft(null, 'S')).toEqual(null);
-      });
-    });
-
-    describe('stripRight', () => {
-      it('should strip the first character of the string if it matches the provided input', () => {
-        var input = 'angular2 is amazing!';
-        var expectedOutput = 'angular2 is amazing';
-
-        expect(StringWrapper.stripRight(input, '!')).toEqual(expectedOutput);
-      });
-
-      it('should not alter the provided input if the first character does not match the provided input',
-         () => {
-           var input = 'angular2 is amazing+';
-
-           expect(StringWrapper.stripRight(input, '*')).toEqual(input);
-         });
-
-      it('should keep stripping characters from the end until the first unmatched character',
-         () => {
-           var input = 'hi&!&&&&&';
-           var expectedOutput = 'hi&!';
-           expect(StringWrapper.stripRight(input, '&')).toEqual(expectedOutput);
-         });
-
-      it('should not do any alterations when an empty string or null value is passed in', () => {
-        expect(StringWrapper.stripRight('', 'S')).toEqual('');
-        expect(StringWrapper.stripRight(null, 'S')).toEqual(null);
-      });
-    });
-
-    describe('hasConstructor', () => {
-      it('should be true when the type matches',
-         () => { expect(hasConstructor(new MySuperclass(), MySuperclass)).toEqual(true); });
-
-      it('should be false for subtypes',
-         () => { expect(hasConstructor(new MySubclass(), MySuperclass)).toEqual(false); });
-    });
-  });
 }
diff --git a/modules/@angular/forms/src/directives/select_control_value_accessor.ts b/modules/@angular/forms/src/directives/select_control_value_accessor.ts
index d0d095db03..e81ff430b3 100644
--- a/modules/@angular/forms/src/directives/select_control_value_accessor.ts
+++ b/modules/@angular/forms/src/directives/select_control_value_accessor.ts
@@ -9,7 +9,7 @@
 import {Directive, ElementRef, Host, Input, OnDestroy, Optional, Renderer, forwardRef} from '@angular/core';
 
 import {MapWrapper} from '../facade/collection';
-import {StringWrapper, isBlank, isPresent, isPrimitive, looseIdentical} from '../facade/lang';
+import {isBlank, isPresent, isPrimitive, looseIdentical} from '../facade/lang';
 
 import {ControlValueAccessor, NG_VALUE_ACCESSOR} from './control_value_accessor';
 
@@ -22,7 +22,7 @@ export const SELECT_VALUE_ACCESSOR: any = {
 function _buildValueString(id: string, value: any): string {
   if (isBlank(id)) return `${value}`;
   if (!isPrimitive(value)) value = 'Object';
-  return StringWrapper.slice(`${id}: ${value}`, 0, 50);
+  return `${id}: ${value}`.slice(0, 50);
 }
 
 function _extractId(valueString: string): string {
diff --git a/modules/@angular/forms/src/directives/select_multiple_control_value_accessor.ts b/modules/@angular/forms/src/directives/select_multiple_control_value_accessor.ts
index 18ed1b5c5f..70c14d67c5 100644
--- a/modules/@angular/forms/src/directives/select_multiple_control_value_accessor.ts
+++ b/modules/@angular/forms/src/directives/select_multiple_control_value_accessor.ts
@@ -9,7 +9,7 @@
 import {Directive, ElementRef, Host, Input, OnDestroy, OpaqueToken, Optional, Renderer, Type, forwardRef} from '@angular/core';
 
 import {MapWrapper} from '../facade/collection';
-import {StringWrapper, isBlank, isPresent, isPrimitive, isString, looseIdentical} from '../facade/lang';
+import {isBlank, isPresent, isPrimitive, isString, looseIdentical} from '../facade/lang';
 
 import {ControlValueAccessor, NG_VALUE_ACCESSOR} from './control_value_accessor';
 
@@ -23,7 +23,7 @@ function _buildValueString(id: string, value: any): string {
   if (isBlank(id)) return `${value}`;
   if (isString(value)) value = `'${value}'`;
   if (!isPrimitive(value)) value = 'Object';
-  return StringWrapper.slice(`${id}: ${value}`, 0, 50);
+  return `${id}: ${value}`.slice(0, 50);
 }
 
 function _extractId(valueString: string): string {
diff --git a/modules/@angular/http/src/backends/jsonp_backend.ts b/modules/@angular/http/src/backends/jsonp_backend.ts
index ff736aa73d..84d4e31094 100644
--- a/modules/@angular/http/src/backends/jsonp_backend.ts
+++ b/modules/@angular/http/src/backends/jsonp_backend.ts
@@ -12,7 +12,7 @@ import {Observer} from 'rxjs/Observer';
 
 import {ResponseOptions} from '../base_response_options';
 import {ReadyState, RequestMethod, ResponseType} from '../enums';
-import {StringWrapper, isPresent} from '../facade/lang';
+import {isPresent} from '../facade/lang';
 import {Connection, ConnectionBackend} from '../interfaces';
 import {Request} from '../static_request';
 import {Response} from '../static_response';
@@ -75,7 +75,7 @@ export class JSONPConnection_ extends JSONPConnection {
       let callback = _dom.requestCallback(this._id);
       let url: string = req.url;
       if (url.indexOf('=JSONP_CALLBACK&') > -1) {
-        url = StringWrapper.replace(url, '=JSONP_CALLBACK&', `=${callback}&`);
+        url = url.replace('=JSONP_CALLBACK&', `=${callback}&`);
       } else if (url.lastIndexOf('=JSONP_CALLBACK') === url.length - '=JSONP_CALLBACK'.length) {
         url = url.substring(0, url.length - '=JSONP_CALLBACK'.length) + `=${callback}`;
       }
diff --git a/modules/@angular/http/src/static_request.ts b/modules/@angular/http/src/static_request.ts
index d54eb04d82..52240f6fca 100644
--- a/modules/@angular/http/src/static_request.ts
+++ b/modules/@angular/http/src/static_request.ts
@@ -6,7 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {StringWrapper, isPresent} from '../src/facade/lang';
+import {isPresent} from '../src/facade/lang';
 
 import {Body} from './body';
 import {ContentType, RequestMethod, ResponseContentType} from './enums';
@@ -82,7 +82,7 @@ export class Request extends Body {
       let search = requestOptions.search.toString();
       if (search.length > 0) {
         let prefix = '?';
-        if (StringWrapper.contains(this.url, '?')) {
+        if (this.url.indexOf('?') != -1) {
           prefix = (this.url[this.url.length - 1] == '&') ? '' : '&';
         }
         // TODO: just delete search-query-looking string in url?
diff --git a/modules/@angular/platform-browser/src/dom/dom_renderer.ts b/modules/@angular/platform-browser/src/dom/dom_renderer.ts
index bd5c68d0db..955182d141 100644
--- a/modules/@angular/platform-browser/src/dom/dom_renderer.ts
+++ b/modules/@angular/platform-browser/src/dom/dom_renderer.ts
@@ -7,7 +7,7 @@
  */
 
 import {Inject, Injectable, RenderComponentType, Renderer, RootRenderer, ViewEncapsulation} from '@angular/core';
-import {Json, StringWrapper, isArray, isBlank, isPresent, isString, stringify} from '../facade/lang';
+import {Json, isArray, isBlank, isPresent, isString, stringify} from '../facade/lang';
 import {AnimationKeyframe, AnimationPlayer, AnimationStyles, RenderDebugInfo} from '../private_import_core';
 
 import {AnimationDriver} from './animation_driver';
@@ -192,13 +192,12 @@ export class DomRenderer implements Renderer {
   setBindingDebugInfo(renderElement: any, propertyName: string, propertyValue: string): void {
     var dashCasedPropertyName = camelCaseToDashCase(propertyName);
     if (getDOM().isCommentNode(renderElement)) {
-      const existingBindings = StringWrapper.replaceAll(getDOM().getText(renderElement), /\n/g, '')
-                                   .match(TEMPLATE_BINDINGS_EXP);
+      const existingBindings =
+          getDOM().getText(renderElement).replace(/\n/g, '').match(TEMPLATE_BINDINGS_EXP);
       var parsedBindings = Json.parse(existingBindings[1]);
       (parsedBindings as any /** TODO #9100 */)[dashCasedPropertyName] = propertyValue;
       getDOM().setText(
-          renderElement,
-          StringWrapper.replace(TEMPLATE_COMMENT_TEXT, '{}', Json.stringify(parsedBindings)));
+          renderElement, TEMPLATE_COMMENT_TEXT.replace('{}', Json.stringify(parsedBindings)));
     } else {
       this.setElementAttribute(renderElement, propertyName, propertyValue);
     }
@@ -272,11 +271,11 @@ export const HOST_ATTR = `_nghost-${COMPONENT_VARIABLE}`;
 export const CONTENT_ATTR = `_ngcontent-${COMPONENT_VARIABLE}`;
 
 function _shimContentAttribute(componentShortId: string): string {
-  return StringWrapper.replaceAll(CONTENT_ATTR, COMPONENT_REGEX, componentShortId);
+  return CONTENT_ATTR.replace(COMPONENT_REGEX, componentShortId);
 }
 
 function _shimHostAttribute(componentShortId: string): string {
-  return StringWrapper.replaceAll(HOST_ATTR, COMPONENT_REGEX, componentShortId);
+  return HOST_ATTR.replace(COMPONENT_REGEX, componentShortId);
 }
 
 function _flattenStyles(compId: string, styles: Array<any|any[]>, target: string[]): string[] {
@@ -285,7 +284,7 @@ function _flattenStyles(compId: string, styles: Array<any|any[]>, target: string
     if (isArray(style)) {
       _flattenStyles(compId, style, target);
     } else {
-      style = StringWrapper.replaceAll(style, COMPONENT_REGEX, compId);
+      style = style.replace(COMPONENT_REGEX, compId);
       target.push(style);
     }
   }
diff --git a/modules/@angular/platform-browser/src/dom/events/key_events.ts b/modules/@angular/platform-browser/src/dom/events/key_events.ts
index cf72578783..6c9a054fdd 100644
--- a/modules/@angular/platform-browser/src/dom/events/key_events.ts
+++ b/modules/@angular/platform-browser/src/dom/events/key_events.ts
@@ -9,7 +9,7 @@
 import {Injectable, NgZone} from '@angular/core';
 
 import {ListWrapper} from '../../facade/collection';
-import {StringWrapper, isPresent} from '../../facade/lang';
+import {isPresent} from '../../facade/lang';
 import {getDOM} from '../dom_adapter';
 
 import {EventManagerPlugin} from './event_manager';
@@ -50,9 +50,7 @@ export class KeyEventsPlugin extends EventManagerPlugin {
     var parts: string[] = eventName.toLowerCase().split('.');
 
     var domEventName = parts.shift();
-    if ((parts.length === 0) ||
-        !(StringWrapper.equals(domEventName, 'keydown') ||
-          StringWrapper.equals(domEventName, 'keyup'))) {
+    if ((parts.length === 0) || !(domEventName === 'keydown' || domEventName === 'keyup')) {
       return null;
     }
 
@@ -82,9 +80,9 @@ export class KeyEventsPlugin extends EventManagerPlugin {
     var fullKey = '';
     var key = getDOM().getEventKey(event);
     key = key.toLowerCase();
-    if (StringWrapper.equals(key, ' ')) {
+    if (key === ' ') {
       key = 'space';  // for readability
-    } else if (StringWrapper.equals(key, '.')) {
+    } else if (key === '.') {
       key = 'dot';  // because '.' is used as a separator in event names
     }
     modifierKeys.forEach(modifierName => {
@@ -102,7 +100,7 @@ export class KeyEventsPlugin extends EventManagerPlugin {
   static eventCallback(element: HTMLElement, fullKey: any, handler: Function, zone: NgZone):
       Function {
     return (event: any /** TODO #9100 */) => {
-      if (StringWrapper.equals(KeyEventsPlugin.getEventFullKey(event), fullKey)) {
+      if (KeyEventsPlugin.getEventFullKey(event) === fullKey) {
         zone.runGuarded(() => handler(event));
       }
     };
diff --git a/modules/@angular/platform-browser/src/dom/util.ts b/modules/@angular/platform-browser/src/dom/util.ts
index c482c4392e..c1f9ab9b20 100644
--- a/modules/@angular/platform-browser/src/dom/util.ts
+++ b/modules/@angular/platform-browser/src/dom/util.ts
@@ -6,18 +6,14 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {StringWrapper} from '../facade/lang';
-
 var CAMEL_CASE_REGEXP = /([A-Z])/g;
 var DASH_CASE_REGEXP = /-([a-z])/g;
 
 
 export function camelCaseToDashCase(input: string): string {
-  return StringWrapper.replaceAllMapped(
-      input, CAMEL_CASE_REGEXP, (m: string[]) => '-' + m[1].toLowerCase());
+  return input.replace(CAMEL_CASE_REGEXP, (...m: string[]) => '-' + m[1].toLowerCase());
 }
 
 export function dashCaseToCamelCase(input: string): string {
-  return StringWrapper.replaceAllMapped(
-      input, DASH_CASE_REGEXP, (m: string[]) => m[1].toUpperCase());
+  return input.replace(DASH_CASE_REGEXP, (...m: string[]) => m[1].toUpperCase());
 }
diff --git a/modules/@angular/platform-browser/src/dom/web_animations_driver.ts b/modules/@angular/platform-browser/src/dom/web_animations_driver.ts
index ca8edbef5d..5ae2e2b39f 100644
--- a/modules/@angular/platform-browser/src/dom/web_animations_driver.ts
+++ b/modules/@angular/platform-browser/src/dom/web_animations_driver.ts
@@ -7,7 +7,8 @@
  */
 
 import {AUTO_STYLE} from '@angular/core';
-import {StringWrapper, isNumber, isPresent} from '../facade/lang';
+
+import {isNumber, isPresent} from '../facade/lang';
 import {AnimationKeyframe, AnimationStyles} from '../private_import_core';
 
 import {AnimationDriver} from './animation_driver';
@@ -97,7 +98,7 @@ const _$PERIOD = 46;
 
 function _findDimensionalSuffix(value: string): string {
   for (var i = 0; i < value.length; i++) {
-    var c = StringWrapper.charCodeAt(value, i);
+    var c = value.charCodeAt(i);
     if ((c >= _$0 && c <= _$9) || c == _$PERIOD) continue;
     return value.substring(i, value.length);
   }
diff --git a/modules/@angular/platform-browser/testing/browser_util.ts b/modules/@angular/platform-browser/testing/browser_util.ts
index d147346980..529459a051 100644
--- a/modules/@angular/platform-browser/testing/browser_util.ts
+++ b/modules/@angular/platform-browser/testing/browser_util.ts
@@ -9,7 +9,7 @@
 import {NgZone} from '@angular/core';
 
 import {ListWrapper} from './facade/collection';
-import {StringWrapper, global, isPresent, isString} from './facade/lang';
+import {global, isPresent, isString} from './facade/lang';
 import {getDOM} from './private_import_platform-browser';
 
 export class BrowserDetection {
@@ -83,16 +83,12 @@ export function el(html: string): HTMLElement {
 }
 
 export function normalizeCSS(css: string): string {
-  css = StringWrapper.replaceAll(css, /\s+/g, ' ');
-  css = StringWrapper.replaceAll(css, /:\s/g, ':');
-  css = StringWrapper.replaceAll(css, /'/g, '"');
-  css = StringWrapper.replaceAll(css, / }/g, '}');
-  css = StringWrapper.replaceAllMapped(
-      css, /url\((\"|\s)(.+)(\"|\s)\)(\s*)/g,
-      (match: any /** TODO #9100 */) => `url("${match[2]}")`);
-  css = StringWrapper.replaceAllMapped(
-      css, /\[(.+)=([^"\]]+)\]/g, (match: any /** TODO #9100 */) => `[${match[1]}="${match[2]}"]`);
-  return css;
+  return css.replace(/\s+/g, ' ')
+      .replace(/:\s/g, ':')
+      .replace(/'/g, '"')
+      .replace(/ }/g, '}')
+      .replace(/url\((\"|\s)(.+)(\"|\s)\)(\s*)/g, (...match: string[]) => `url("${match[2]}")`)
+      .replace(/\[(.+)=([^"\]]+)\]/g, (...match: string[]) => `[${match[1]}="${match[2]}"]`);
 }
 
 var _singleTagWhitelist = ['br', 'hr', 'input'];
diff --git a/modules/@angular/platform-webworker/src/web_workers/shared/client_message_broker.ts b/modules/@angular/platform-webworker/src/web_workers/shared/client_message_broker.ts
index 5f8e1bd04b..2e5a7345ae 100644
--- a/modules/@angular/platform-webworker/src/web_workers/shared/client_message_broker.ts
+++ b/modules/@angular/platform-webworker/src/web_workers/shared/client_message_broker.ts
@@ -9,7 +9,7 @@
 import {Injectable, Type} from '@angular/core';
 
 import {EventEmitter} from '../../facade/async';
-import {StringWrapper, isPresent, print, stringify} from '../../facade/lang';
+import {isPresent, print, stringify} from '../../facade/lang';
 
 import {MessageBus} from './message_bus';
 import {Serializer} from './serializer';
@@ -129,10 +129,10 @@ export class ClientMessageBroker_ extends ClientMessageBroker {
   private _handleMessage(message: {[key: string]: any}): void {
     var data = new MessageData(message);
     // TODO(jteplitz602): replace these strings with messaging constants #3685
-    if (StringWrapper.equals(data.type, 'result') || StringWrapper.equals(data.type, 'error')) {
+    if (data.type === 'result' || data.type === 'error') {
       var id = data.id;
       if (this._pending.has(id)) {
-        if (StringWrapper.equals(data.type, 'result')) {
+        if (data.type === 'result') {
           this._pending.get(id).resolve(data.value);
         } else {
           this._pending.get(id).reject(data.value);
diff --git a/modules/@angular/platform-webworker/src/web_workers/worker/platform_location.ts b/modules/@angular/platform-webworker/src/web_workers/worker/platform_location.ts
index 893663eca1..24ee966183 100644
--- a/modules/@angular/platform-webworker/src/web_workers/worker/platform_location.ts
+++ b/modules/@angular/platform-webworker/src/web_workers/worker/platform_location.ts
@@ -10,7 +10,6 @@ import {LocationChangeListener, PlatformLocation} from '@angular/common';
 import {Injectable} from '@angular/core';
 
 import {EventEmitter} from '../../facade/async';
-import {StringWrapper} from '../../facade/lang';
 import {ClientMessageBroker, ClientMessageBrokerFactory, FnArg, UiArguments} from '../shared/client_message_broker';
 import {MessageBus} from '../shared/message_bus';
 import {ROUTER_CHANNEL} from '../shared/messaging_api';
@@ -38,9 +37,9 @@ export class WebWorkerPlatformLocation extends PlatformLocation {
         var listeners: Array<Function> = null;
         if (msg.hasOwnProperty('event')) {
           let type: string = msg['event']['type'];
-          if (StringWrapper.equals(type, 'popstate')) {
+          if (type === 'popstate') {
             listeners = this._popStateListeners;
-          } else if (StringWrapper.equals(type, 'hashchange')) {
+          } else if (type === 'hashchange') {
             listeners = this._hashChangeListeners;
           }
 
diff --git a/modules/angular1_router/lib/facades.es5 b/modules/angular1_router/lib/facades.es5
index 5e15c0f871..dc883a556d 100644
--- a/modules/angular1_router/lib/facades.es5
+++ b/modules/angular1_router/lib/facades.es5
@@ -269,8 +269,6 @@ var StringWrapper = {
 
   replaceAllMapped: function(s, from, cb) {
     return s.replace(from, function(matches) {
-      // Remove offset & string from the result array
-      matches.splice(-2, 2);
       // The callback receives match, p1, ..., pn
       return cb.apply(null, matches);
     });
diff --git a/modules/benchmarks/src/old/compiler/selector_benchmark.ts b/modules/benchmarks/src/old/compiler/selector_benchmark.ts
index 77c840741f..9a9c5d95cc 100644
--- a/modules/benchmarks/src/old/compiler/selector_benchmark.ts
+++ b/modules/benchmarks/src/old/compiler/selector_benchmark.ts
@@ -1,6 +1,6 @@
 import {SelectorMatcher} from '@angular/compiler/src/selector';
 import {CssSelector} from '@angular/compiler/src/selector';
-import {Math, StringWrapper} from '@angular/facade/lang';
+import {Math} from '@angular/facade/lang';
 import {BrowserDomAdapter} from '@angular/platform-browser/src/browser/browser_adapter';
 import {bindAction, getIntParameter} from '@angular/testing/src/benchmark_util';
 
diff --git a/modules/benchmarks/src/old/naive_infinite_scroll/common.ts b/modules/benchmarks/src/old/naive_infinite_scroll/common.ts
index 3e6a5bd235..def2ab0f40 100644
--- a/modules/benchmarks/src/old/naive_infinite_scroll/common.ts
+++ b/modules/benchmarks/src/old/naive_infinite_scroll/common.ts
@@ -1,5 +1,4 @@
 import {ListWrapper, Map, MapWrapper} from '@angular/facade/src/collection';
-import {StringWrapper} from '@angular/facade/src/lang';
 import {Math} from '@angular/facade/src/math';
 
 export var ITEMS = 1000;
diff --git a/modules/benchmarks/src/old/naive_infinite_scroll/random_data.ts b/modules/benchmarks/src/old/naive_infinite_scroll/random_data.ts
index be931f1e01..b17c5f70e3 100644
--- a/modules/benchmarks/src/old/naive_infinite_scroll/random_data.ts
+++ b/modules/benchmarks/src/old/naive_infinite_scroll/random_data.ts
@@ -1,5 +1,3 @@
-import {StringWrapper} from '@angular/facade/src/lang';
-
 import {AAT_STATUS_LIST, Account, Company, CustomDate, Offering, Opportunity, STATUS_LIST} from './common';
 
 export function generateOfferings(count: number): Offering[] {
diff --git a/modules/playground/src/web_workers/kitchen_sink/index_common.ts b/modules/playground/src/web_workers/kitchen_sink/index_common.ts
index 7aafe6771a..ef982038f1 100644
--- a/modules/playground/src/web_workers/kitchen_sink/index_common.ts
+++ b/modules/playground/src/web_workers/kitchen_sink/index_common.ts
@@ -7,8 +7,6 @@
  */
 
 import {Component, Directive, ElementRef, Injectable, Renderer} from '@angular/core';
-import {StringWrapper} from '@angular/core/src/facade/lang';
-
 
 // A service available to the Injector, used by the HelloCmp component.
 @Injectable()
@@ -57,6 +55,6 @@ export class HelloCmp {
   changeGreeting(): void { this.greeting = 'howdy'; }
 
   onKeyDown(event: any /** TODO #9100 */): void {
-    this.lastKey = StringWrapper.fromCharCode(event.keyCode);
+    this.lastKey = String.fromCharCode(event.keyCode);
   }
 }