diff --git a/modules/@angular/benchpress/test/firefox_extension/spec.ts b/modules/@angular/benchpress/test/firefox_extension/spec.ts
index bb81aeb29becb..15033c08555f1 100644
--- a/modules/@angular/benchpress/test/firefox_extension/spec.ts
+++ b/modules/@angular/benchpress/test/firefox_extension/spec.ts
@@ -27,9 +27,7 @@ describe('firefox extension', function() {
 
     browser.driver.get(TEST_URL);
 
-    browser.executeScript('window.startProfiler()').then(function() {
-      console.log('started measuring perf');
-    });
+    browser.executeScript('window.startProfiler()');
 
     browser.executeAsyncScript('setTimeout(arguments[0], 1000);');
     browser.executeScript('window.forceGC()');
diff --git a/modules/@angular/compiler-cli/src/codegen.ts b/modules/@angular/compiler-cli/src/codegen.ts
index 8e9dfff35834e..8b327f6e5371c 100644
--- a/modules/@angular/compiler-cli/src/codegen.ts
+++ b/modules/@angular/compiler-cli/src/codegen.ts
@@ -44,7 +44,7 @@ export class CodeGenerator {
     let root = this.options.basePath;
     for (const eachRootDir of this.options.rootDirs || []) {
       if (this.options.trace) {
-        console.log(`Check if ${filePath} is under rootDirs element ${eachRootDir}`);
+        console.error(`Check if ${filePath} is under rootDirs element ${eachRootDir}`);
       }
       if (path.relative(eachRootDir, filePath).indexOf('.') !== 0) {
         root = eachRootDir;
diff --git a/modules/@angular/compiler-cli/src/path_mapped_compiler_host.ts b/modules/@angular/compiler-cli/src/path_mapped_compiler_host.ts
index 6f01d29800d64..2a1af90ea4dff 100644
--- a/modules/@angular/compiler-cli/src/path_mapped_compiler_host.ts
+++ b/modules/@angular/compiler-cli/src/path_mapped_compiler_host.ts
@@ -56,7 +56,7 @@ export class PathMappedCompilerHost extends CompilerHost {
           ts.resolveModuleName(m, rootedContainingFile, this.options, this.context).resolvedModule;
       if (resolved) {
         if (this.options.traceResolution) {
-          console.log('resolve', m, containingFile, '=>', resolved.resolvedFileName);
+          console.error('resolve', m, containingFile, '=>', resolved.resolvedFileName);
         }
         return this.getCanonicalFileName(resolved.resolvedFileName);
       }
@@ -71,7 +71,7 @@ export class PathMappedCompilerHost extends CompilerHost {
    */
   fileNameToModuleName(importedFile: string, containingFile: string): string {
     if (this.options.traceResolution) {
-      console.log(
+      console.error(
           'getImportPath from containingFile', containingFile, 'to importedFile', importedFile);
     }
 
diff --git a/modules/@angular/compiler/src/aot/compiler.ts b/modules/@angular/compiler/src/aot/compiler.ts
index f2895f3996123..98ddf80c251e6 100644
--- a/modules/@angular/compiler/src/aot/compiler.ts
+++ b/modules/@angular/compiler/src/aot/compiler.ts
@@ -369,7 +369,7 @@ export function extractProgramSymbols(
   files.filter(fileName => _filterFileByPatterns(fileName, options)).forEach(sourceFile => {
     const moduleMetadata = staticReflector.getModuleMetadata(sourceFile);
     if (!moduleMetadata) {
-      console.log(`WARNING: no metadata found for ${sourceFile}`);
+      console.error(`WARNING: no metadata found for ${sourceFile}`);
       return;
     }
 
diff --git a/modules/@angular/compiler/src/aot/static_reflector.ts b/modules/@angular/compiler/src/aot/static_reflector.ts
index e4792d4c1e163..a4a7b45b7d35e 100644
--- a/modules/@angular/compiler/src/aot/static_reflector.ts
+++ b/modules/@angular/compiler/src/aot/static_reflector.ts
@@ -163,7 +163,7 @@ export class StaticReflector implements ReflectorReader {
       }
       return parameters;
     } catch (e) {
-      console.log(`Failed on type ${JSON.stringify(type)} with error ${e}`);
+      console.error(`Failed on type ${JSON.stringify(type)} with error ${e}`);
       throw e;
     }
   }
diff --git a/modules/@angular/examples/_common/e2e_util.ts b/modules/@angular/examples/_common/e2e_util.ts
index c89f3d7293cc3..6d0deb77b2695 100644
--- a/modules/@angular/examples/_common/e2e_util.ts
+++ b/modules/@angular/examples/_common/e2e_util.ts
@@ -15,7 +15,6 @@ export function verifyNoBrowserErrors() {
     const errors: any[] = [];
     browserLog.filter(logEntry => {
       const msg = logEntry.message;
-      console.log('>> ' + msg);
       if (logEntry.level.value >= webdriver.logging.Level.INFO.value) {
         errors.push(msg);
       }
diff --git a/modules/@angular/examples/facade/ts/async/observable.ts b/modules/@angular/examples/facade/ts/async/observable.ts
index 59ce255f0cceb..739e8d372ad41 100644
--- a/modules/@angular/examples/facade/ts/async/observable.ts
+++ b/modules/@angular/examples/facade/ts/async/observable.ts
@@ -6,6 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
+/* tslint:disable:no-console  */
 // #docregion Observable
 import {Observable} from 'rxjs/Observable';
 import {Subscriber} from 'rxjs/Subscriber';
diff --git a/modules/@angular/examples/facade/ts/async/observable_patched.ts b/modules/@angular/examples/facade/ts/async/observable_patched.ts
index 8304b348b02a0..0dbde026d32ef 100644
--- a/modules/@angular/examples/facade/ts/async/observable_patched.ts
+++ b/modules/@angular/examples/facade/ts/async/observable_patched.ts
@@ -6,6 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
+/* tslint:disable:no-console  */
 // #docregion Observable
 import 'rxjs/add/operator/map';
 
diff --git a/modules/@angular/examples/facade/ts/async/observable_pure.ts b/modules/@angular/examples/facade/ts/async/observable_pure.ts
index 08eb46b7a19c6..3028464088643 100644
--- a/modules/@angular/examples/facade/ts/async/observable_pure.ts
+++ b/modules/@angular/examples/facade/ts/async/observable_pure.ts
@@ -6,6 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
+/* tslint:disable:no-console  */
 // #docregion Observable
 import {Observable} from 'rxjs/Observable';
 import {Subscriber} from 'rxjs/Subscriber';
diff --git a/modules/@angular/examples/forms/ts/nestedFormArray/nested_form_array_example.ts b/modules/@angular/examples/forms/ts/nestedFormArray/nested_form_array_example.ts
index c7daf00a238f2..346221acc7c6a 100644
--- a/modules/@angular/examples/forms/ts/nestedFormArray/nested_form_array_example.ts
+++ b/modules/@angular/examples/forms/ts/nestedFormArray/nested_form_array_example.ts
@@ -6,6 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
+/* tslint:disable:no-console  */
 // #docregion Component
 import {Component} from '@angular/core';
 import {FormArray, FormControl, FormGroup} from '@angular/forms';
diff --git a/modules/@angular/examples/forms/ts/nestedFormGroup/nested_form_group_example.ts b/modules/@angular/examples/forms/ts/nestedFormGroup/nested_form_group_example.ts
index 1f8ace219118d..38c61535b8716 100644
--- a/modules/@angular/examples/forms/ts/nestedFormGroup/nested_form_group_example.ts
+++ b/modules/@angular/examples/forms/ts/nestedFormGroup/nested_form_group_example.ts
@@ -6,6 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
+/* tslint:disable:no-console  */
 // #docregion Component
 import {Component} from '@angular/core';
 import {FormControl, FormGroup, Validators} from '@angular/forms';
diff --git a/modules/@angular/examples/forms/ts/ngModelGroup/ng_model_group_example.ts b/modules/@angular/examples/forms/ts/ngModelGroup/ng_model_group_example.ts
index 4c567c36ffdf8..fe794843f153a 100644
--- a/modules/@angular/examples/forms/ts/ngModelGroup/ng_model_group_example.ts
+++ b/modules/@angular/examples/forms/ts/ngModelGroup/ng_model_group_example.ts
@@ -6,6 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
+/* tslint:disable:no-console  */
 // #docregion Component
 import {Component} from '@angular/core';
 import {NgForm} from '@angular/forms';
diff --git a/modules/@angular/examples/forms/ts/simpleForm/simple_form_example.ts b/modules/@angular/examples/forms/ts/simpleForm/simple_form_example.ts
index 691756e8237e8..b648cab7ca26d 100644
--- a/modules/@angular/examples/forms/ts/simpleForm/simple_form_example.ts
+++ b/modules/@angular/examples/forms/ts/simpleForm/simple_form_example.ts
@@ -6,6 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
+/* tslint:disable:no-console  */
 // #docregion Component
 import {Component} from '@angular/core';
 import {NgForm} from '@angular/forms';
diff --git a/modules/@angular/examples/forms/ts/simpleFormGroup/simple_form_group_example.ts b/modules/@angular/examples/forms/ts/simpleFormGroup/simple_form_group_example.ts
index a128393e18e82..7ca0d21abe4ac 100644
--- a/modules/@angular/examples/forms/ts/simpleFormGroup/simple_form_group_example.ts
+++ b/modules/@angular/examples/forms/ts/simpleFormGroup/simple_form_group_example.ts
@@ -6,6 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
+/* tslint:disable:no-console  */
 // #docregion Component
 import {Component} from '@angular/core';
 import {FormControl, FormGroup, Validators} from '@angular/forms';
diff --git a/modules/@angular/facade/src/lang.ts b/modules/@angular/facade/src/lang.ts
index 6654cb9129661..ed9eb36cf89f4 100644
--- a/modules/@angular/facade/src/lang.ts
+++ b/modules/@angular/facade/src/lang.ts
@@ -129,6 +129,7 @@ export function isJsObject(o: any): boolean {
 }
 
 export function print(obj: Error | Object) {
+  // tslint:disable-next-line:no-console
   console.log(obj);
 }
 
diff --git a/modules/@angular/platform-browser/src/browser/browser_adapter.ts b/modules/@angular/platform-browser/src/browser/browser_adapter.ts
index 86e0e965d35e3..d78a96320c2de 100644
--- a/modules/@angular/platform-browser/src/browser/browser_adapter.ts
+++ b/modules/@angular/platform-browser/src/browser/browser_adapter.ts
@@ -85,6 +85,7 @@ export class BrowserDomAdapter extends GenericBrowserDomAdapter {
 
   log(error: string): void {
     if (window.console) {
+      // tslint:disable-next-line:no-console
       window.console.log && window.console.log(error);
     }
   }
diff --git a/modules/@angular/platform-browser/src/browser/tools/common_tools.ts b/modules/@angular/platform-browser/src/browser/tools/common_tools.ts
index 91e000133c0ad..852ffba1b8c37 100644
--- a/modules/@angular/platform-browser/src/browser/tools/common_tools.ts
+++ b/modules/@angular/platform-browser/src/browser/tools/common_tools.ts
@@ -75,7 +75,9 @@ export class AngularProfiler {
       (<any>window.console.profileEnd)(profileName);
     }
     const msPerTick = (end - start) / numTicks;
+    // tslint:disable-next-line:no-console
     window.console.log(`ran ${numTicks} change detection cycles`);
+    // tslint:disable-next-line:no-console
     window.console.log(`${msPerTick.toFixed(2)} ms per check`);
 
     return new ChangeDetectionPerfRecord(msPerTick, numTicks);
diff --git a/modules/@angular/platform-server/src/parse5_adapter.ts b/modules/@angular/platform-server/src/parse5_adapter.ts
index 3673f25bbab59..55154592447f4 100644
--- a/modules/@angular/platform-server/src/parse5_adapter.ts
+++ b/modules/@angular/platform-server/src/parse5_adapter.ts
@@ -63,6 +63,7 @@ export class Parse5DomAdapter extends DomAdapter {
 
   logError(error: string) { console.error(error); }
 
+  // tslint:disable-next-line:no-console
   log(error: string) { console.log(error); }
 
   logGroup(error: string) { console.error(error); }
diff --git a/modules/@angular/platform-webworker/src/web_workers/worker/worker_adapter.ts b/modules/@angular/platform-webworker/src/web_workers/worker/worker_adapter.ts
index 4635efccb6203..3278c195e6b45 100644
--- a/modules/@angular/platform-webworker/src/web_workers/worker/worker_adapter.ts
+++ b/modules/@angular/platform-webworker/src/web_workers/worker/worker_adapter.ts
@@ -22,10 +22,12 @@ export class WorkerDomAdapter extends DomAdapter {
     if (console.error) {
       console.error(error);
     } else {
+      // tslint:disable-next-line:no-console
       console.log(error);
     }
   }
 
+  // tslint:disable-next-line:no-console
   log(error: any /** TODO #9100 */) { console.log(error); }
 
   logGroup(error: any /** TODO #9100 */) {
@@ -33,6 +35,7 @@ export class WorkerDomAdapter extends DomAdapter {
       console.group(error);
       this.logError(error);
     } else {
+      // tslint:disable-next-line:no-console
       console.log(error);
     }
   }
diff --git a/modules/@angular/upgrade/src/util.ts b/modules/@angular/upgrade/src/util.ts
index 20fd7056d1f9f..744d3a4865a0b 100644
--- a/modules/@angular/upgrade/src/util.ts
+++ b/modules/@angular/upgrade/src/util.ts
@@ -15,7 +15,7 @@ export function stringify(obj: any): string {
 
 export function onError(e: any) {
   // TODO: (misko): We seem to not have a stack trace here!
-  console.log(e, e.stack);
+  console.error(e, e.stack);
   throw e;
 }
 
diff --git a/modules/@angular/upgrade/test/upgrade_spec.ts b/modules/@angular/upgrade/test/upgrade_spec.ts
index ae1e22d845f2b..90f21c510c1a4 100644
--- a/modules/@angular/upgrade/test/upgrade_spec.ts
+++ b/modules/@angular/upgrade/test/upgrade_spec.ts
@@ -41,7 +41,7 @@ export function main() {
 
       it('should throw an uncaught error', fakeAsync(() => {
            const resolveSpy = jasmine.createSpy('resolveSpy');
-           spyOn(console, 'log');
+           spyOn(console, 'error');
 
            expect(() => {
              adapter.bootstrap(html('<ng2></ng2>'), ['ng1']).ready(resolveSpy);
@@ -50,14 +50,14 @@ export function main() {
            expect(resolveSpy).not.toHaveBeenCalled();
          }));
 
-      it('should properly log to the console and re-throw', fakeAsync(() => {
-           spyOn(console, 'log');
+      it('should output an error message to the console and re-throw', fakeAsync(() => {
+           spyOn(console, 'error');
            expect(() => {
              adapter.bootstrap(html('<ng2></ng2>'), ['ng1']);
              flushMicrotasks();
            }).toThrowError();
-           expect(console.log).toHaveBeenCalled();
-           expect(console.log).toHaveBeenCalledWith(jasmine.any(Error), jasmine.any(String));
+           expect(console.error).toHaveBeenCalled();
+           expect(console.error).toHaveBeenCalledWith(jasmine.any(Error), jasmine.any(String));
          }));
     });
 
diff --git a/modules/benchmarks/e2e_test/old/largetable_perf.ts b/modules/benchmarks/e2e_test/old/largetable_perf.ts
index 9cabdcf1e544a..046c01e3854be 100644
--- a/modules/benchmarks/e2e_test/old/largetable_perf.ts
+++ b/modules/benchmarks/e2e_test/old/largetable_perf.ts
@@ -24,7 +24,6 @@ describe('ng2 largetable benchmark', function() {
 
   ['interpolation', 'interpolationAttr', 'interpolationFn'].forEach(function(benchmarkType) {
     it('should log the ng stats with: ' + benchmarkType, function(done) {
-      console.log('executing for type', benchmarkType);
       runClickBenchmark({
         url: URL,
         buttons: ['#ng2DestroyDom', '#ng2CreateDom'],
diff --git a/modules/benchmarks/src/util.ts b/modules/benchmarks/src/util.ts
index 9ac8948e6ec0c..6edcbf5850c78 100644
--- a/modules/benchmarks/src/util.ts
+++ b/modules/benchmarks/src/util.ts
@@ -51,7 +51,6 @@ export function profile(create: () => void, destroy: () => void, name: string) {
       destroy();
     }
     window.console.profileEnd();
-    window.console.log(`Iterations: ${count}; time: ${duration / count} ms / iteration`);
 
     window.console.profile(name + ' w/o GC');
     duration = 0;
@@ -63,7 +62,6 @@ export function profile(create: () => void, destroy: () => void, name: string) {
       destroy();
     }
     window.console.profileEnd();
-    window.console.log(`Iterations: ${count}; time: ${duration / count} ms / iteration`);
   };
 }
 
diff --git a/modules/e2e_util/e2e_util.ts b/modules/e2e_util/e2e_util.ts
index dd6f62883a90f..344190dca7389 100644
--- a/modules/e2e_util/e2e_util.ts
+++ b/modules/e2e_util/e2e_util.ts
@@ -59,7 +59,7 @@ export function verifyNoBrowserErrors() {
   browser.manage().logs().get('browser').then(function(browserLog: any) {
     const filteredLog = browserLog.filter(function(logEntry: any) {
       if (logEntry.level.value >= webdriver.logging.Level.INFO.value) {
-        console.log('>> ' + logEntry.message);
+        console.error('>> ' + logEntry.message);
       }
       return logEntry.level.value > webdriver.logging.Level.WARNING.value;
     });
diff --git a/modules/playground/e2e_test/web_workers/animations/animations_spec.ts b/modules/playground/e2e_test/web_workers/animations/animations_spec.ts
index f0fc7113448d6..2e1e32fdf4b11 100644
--- a/modules/playground/e2e_test/web_workers/animations/animations_spec.ts
+++ b/modules/playground/e2e_test/web_workers/animations/animations_spec.ts
@@ -67,7 +67,7 @@ describe('WebWorkers Animations', function() {
     browser.wait(protractor.until.elementLocated(by.css(selector + ' .box')), 5000)
         .then(() => {}, () => {
           // jasmine will timeout if this gets called too many times
-          console.log('>> unexpected timeout -> browser.refresh()');
+          console.error('>> unexpected timeout -> browser.refresh()');
           browser.refresh();
           waitForBootstrap();
         });
diff --git a/modules/playground/e2e_test/web_workers/input/input_spec.ts b/modules/playground/e2e_test/web_workers/input/input_spec.ts
index 903e4fb6d8bee..6605f57a78778 100644
--- a/modules/playground/e2e_test/web_workers/input/input_spec.ts
+++ b/modules/playground/e2e_test/web_workers/input/input_spec.ts
@@ -67,7 +67,7 @@ describe('WebWorkers Input', function() {
             },
             () => {
               // jasmine will timeout if this gets called too many times
-              console.log('>> unexpected timeout -> browser.refresh()');
+              console.error('>> unexpected timeout -> browser.refresh()');
               browser.refresh();
               waitForBootstrap();
             });
diff --git a/modules/playground/src/model_driven_forms/index.ts b/modules/playground/src/model_driven_forms/index.ts
index 1b6d2aabe1bd2..ebb78850a3b23 100644
--- a/modules/playground/src/model_driven_forms/index.ts
+++ b/modules/playground/src/model_driven_forms/index.ts
@@ -6,6 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
+/* tslint:disable:no-console  */
 import {Component, Host, NgModule} from '@angular/core';
 import {AbstractControl, FormBuilder, FormGroup, FormGroupDirective, ReactiveFormsModule, Validators} from '@angular/forms';
 import {BrowserModule} from '@angular/platform-browser';
diff --git a/modules/playground/src/template_driven_forms/index.ts b/modules/playground/src/template_driven_forms/index.ts
index 99ba9a2aa12e2..eae084b6f2eed 100644
--- a/modules/playground/src/template_driven_forms/index.ts
+++ b/modules/playground/src/template_driven_forms/index.ts
@@ -6,6 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
+/* tslint:disable:no-console  */
 
 import {Component, Directive, Host, NgModule} from '@angular/core';
 import {FormControl, FormGroup, FormsModule, NG_VALIDATORS, NgForm} from '@angular/forms';
diff --git a/tools/@angular/tsc-wrapped/src/tsc.ts b/tools/@angular/tsc-wrapped/src/tsc.ts
index 96afe1ae9a5bf..e68deb6d67942 100644
--- a/tools/@angular/tsc-wrapped/src/tsc.ts
+++ b/tools/@angular/tsc-wrapped/src/tsc.ts
@@ -27,6 +27,7 @@ export interface CompilerInterface {
 const DEBUG = false;
 
 function debug(msg: string, ...o: any[]) {
+  // tslint:disable-next-line:no-console
   if (DEBUG) console.log(msg, ...o);
 }
 
diff --git a/tools/tsc-watch/index.ts b/tools/tsc-watch/index.ts
index d50ca67c18ce2..67cf8c604fa37 100644
--- a/tools/tsc-watch/index.ts
+++ b/tools/tsc-watch/index.ts
@@ -21,11 +21,9 @@ function processOutputEmitterCodeGen(): Promise<number> {
   return new Promise((resolve, reject) => {
            const outDir = 'dist/all/@angular/compiler/test/';
            const promises: Promise<any>[] = [];
-           console.log('Processing codegen...');
            OFFLINE_COMPILE.forEach((file: string) => {
              const codegen = require('../../all/@angular/compiler/test/' + file + '.js');
              if (codegen.emit) {
-               console.log(`  ${file} has changed, regenerating...`);
                promises.push(Promise.resolve(codegen.emit()).then((code) => {
                  writeFileSync(outDir + file + '.ts', code);
                }));
@@ -36,7 +34,6 @@ function processOutputEmitterCodeGen(): Promise<number> {
                  .then(() => {
                    const args =
                        ['--project', 'tools/cjs-jasmine/tsconfig-output_emitter_codegen.json'];
-                   console.log('    compiling changes: tsc ' + args.join(' '));
                    const tsc = spawn(TSC, args, {stdio: 'pipe'});
                    tsc.stdout.on('data', (data: any) => process.stdout.write(data));
                    tsc.stderr.on('data', (data: any) => process.stderr.write(data));
diff --git a/tools/tsc-watch/tsc_watch.ts b/tools/tsc-watch/tsc_watch.ts
index 4d4974aec8891..02e2fe29008e1 100644
--- a/tools/tsc-watch/tsc_watch.ts
+++ b/tools/tsc-watch/tsc_watch.ts
@@ -37,7 +37,6 @@ export class TscWatch {
     start: string,
     complete: string, onStartCmds?: Array<string[]|Command>, onChangeCmds?: Array<string[]|Command>
   }) {
-    console.log('Watching:', tsconfig, 'in', process.cwd());
     this.tsconfig = tsconfig;
     this.start = start;
     this.error = error;
@@ -67,14 +66,12 @@ export class TscWatch {
       const args = argsOrCmd as Array<string>;
       return <any>new Promise((resolve, reject) => {
                const [cmd, ...options] = args;
-               console.log('=====>', cmd, options.join(' '));
                const childProcess = spawn(cmd, options, {stdio: 'pipe'});
                childProcess.stdout.on('data', stdOut);
                childProcess.stderr.on('data', stdErr);
                const onExit = () => childProcess.kill();
                childProcess.on('close', (code: number) => {
                  process.removeListener('exit', onExit);
-                 console.log('EXIT:', code, '<=====', args.join(' '));
                  code ? reject(code) : resolve(code);
                });
                process.on('exit', onExit);
@@ -98,7 +95,6 @@ export class TscWatch {
   consumeLine(buffer: Buffer, isStdError: boolean) {
     const line = '' + buffer;
     if (contains(line, this.start)) {
-      console.log('==============================================================================');
       stdOut(buffer, isStdError);
       this.state = State.waiting;
     } else if (contains(line, this.error)) {
@@ -106,15 +102,15 @@ export class TscWatch {
       this.state = State.error;
     } else if (contains(line, this.complete)) {
       stdOut(buffer, isStdError);
-      console.log('------------------------------------------------------------------------------');
       if (this.state == State.error) {
-        console.log('Errors found.... (response not triggered)');
+        console.error('Errors found.... (response not triggered)');
         if (this.runOnce) process.exit(1);
         this.state = State.idle;
       } else {
         if (this.triggered) {
           this.triggered.then(
-              () => this.triggerCmds(), (e) => console.log('Error while running commands....', e));
+              () => this.triggerCmds(),
+              (e) => console.error('Error while running commands....', e));
         } else {
           this.triggerCmds();
         }
diff --git a/tslint.json b/tslint.json
index d1bff34f45009..5792864049218 100644
--- a/tslint.json
+++ b/tslint.json
@@ -5,6 +5,7 @@
   ],
   "rules": {
     "file-header": [true, "Copyright Google Inc\\."],
+    "no-console": [true, "log"],
     "no-duplicate-imports": true,
     "no-duplicate-variable": true,
     "no-jasmine-focus": true,