diff --git a/tfjs-core/src/debug_mode_test.ts b/tfjs-core/src/debug_mode_test.ts
index d79eca55c0d..6570dd44131 100644
--- a/tfjs-core/src/debug_mode_test.ts
+++ b/tfjs-core/src/debug_mode_test.ts
@@ -55,18 +55,38 @@ describeWithFlags('debug on', SYNC_BACKEND_ENVS, () => {
     expect(a).toThrowError();
   });
 
-  it('debug mode errors when infinities in op output', () => {
+  it('debug mode errors when infinities in op output', async () => {
     const a = tf.tensor1d([1, 2, 3, 4]);
     const b = tf.tensor1d([2, -1, 0, 3]);
-    const c = () => a.div(b);
-    expect(c).toThrowError();
+
+    spyOn(console, 'error');
+
+    const c = async () => {
+      const result = a.div(b);
+      // Must await result so we know exception would have happened by the
+      // time we call `expect`.
+      await result.data();
+    };
+
+    await c();
+
+    expect(console.error).toHaveBeenCalled();
   });
 
-  it('debug mode errors when nans in op output', () => {
+  it('debug mode errors when nans in op output', async () => {
     const a = tf.tensor1d([-1, 2]);
     const b = tf.tensor1d([0.5, 1]);
-    const c = () => a.pow(b);
-    expect(c).toThrowError();
+
+    spyOn(console, 'error');
+
+    const c = async () => {
+      const result = a.pow(b);
+      await result.data();
+    };
+
+    await c();
+
+    expect(console.error).toHaveBeenCalled();
   });
 
   it('debug mode errors when nans in oneHot op (tensorlike), int32', () => {
diff --git a/tfjs-core/src/index.ts b/tfjs-core/src/index.ts
index 453925df6f9..4a67212d042 100644
--- a/tfjs-core/src/index.ts
+++ b/tfjs-core/src/index.ts
@@ -55,7 +55,7 @@ export {RMSPropOptimizer} from './optimizers/rmsprop_optimizer';
 export {SGDOptimizer} from './optimizers/sgd_optimizer';
 export {Scalar, Tensor, Tensor1D, Tensor2D, Tensor3D, Tensor4D, Tensor5D, TensorBuffer, variable, Variable} from './tensor';
 export {GradSaveFunc, NamedTensorMap, TensorContainer, TensorContainerArray, TensorContainerObject} from './tensor_types';
-export {DataType, DataTypeMap, DataValues, Rank, ShapeMap, TensorLike} from './types';
+export {DataType, DataTypeMap, DataValues, Rank, RecursiveArray, ShapeMap, TensorLike} from './types';
 
 export * from './ops/ops';
 export {LSTMCellFunc} from './ops/lstm';
@@ -65,7 +65,7 @@ export * from './train';
 export * from './globals';
 export {customGrad, grad, grads, valueAndGrad, valueAndGrads, variableGrads} from './gradients';
 
-export {TimingInfo} from './engine';
+export {TimingInfo, MemoryInfo} from './engine';
 export {ENV, Environment} from './environment';
 export {Platform} from './platforms/platform';
 
diff --git a/tfjs-core/src/profiler.ts b/tfjs-core/src/profiler.ts
index bfaa9d80950..17cb5831eac 100644
--- a/tfjs-core/src/profiler.ts
+++ b/tfjs-core/src/profiler.ts
@@ -18,7 +18,7 @@
 import {BackendTimer} from './backends/backend';
 import {Tensor} from './tensor';
 import {NamedTensorMap} from './tensor_types';
-import {TypedArray} from './types';
+import {DataType, DataTypeMap, TypedArray} from './types';
 import * as util from './util';
 
 export class Profiler {
@@ -39,17 +39,20 @@ export class Profiler {
     const results: Tensor[] =
         Array.isArray(result) ? result : [result] as Tensor[];
     results.forEach(r => {
-      const vals = r.dataSync();
-      util.checkComputationForErrors(vals, r.dtype, name);
+      // Dangling promise here because we don't want to propagate up
+      // asynchronicity.
+      r.data().then(vals => {
+        checkComputationForErrors(vals, r.dtype, name);
 
-      timer.then(timing => {
-        let extraInfo = '';
-        if (timing.getExtraProfileInfo != null) {
-          extraInfo = timing.getExtraProfileInfo();
-        }
+        timer.then(timing => {
+          let extraInfo = '';
+          if (timing.getExtraProfileInfo != null) {
+            extraInfo = timing.getExtraProfileInfo();
+          }
 
-        this.logger.logKernelProfile(
-            name, r, vals, timing.kernelMs, inputs, extraInfo);
+          this.logger.logKernelProfile(
+              name, r, vals, timing.kernelMs, inputs, extraInfo);
+        });
       });
     });
 
@@ -57,6 +60,26 @@ export class Profiler {
   }
 }
 
+// Create a custom exception class so it can be stubbed in tests.
+export function ProfilerException(msg: string) {
+  console.error(msg);
+}
+
+export function checkComputationForErrors<D extends DataType>(
+    vals: DataTypeMap[D], dtype: D, name: string): void {
+  if (dtype !== 'float32') {
+    // Only floating point computations will generate NaN values
+    return;
+  }
+  for (let i = 0; i < vals.length; i++) {
+    const num = vals[i] as number;
+    if (isNaN(num) || !isFinite(num)) {
+      // Throwing custom exception so behavior is testable.
+      throw ProfilerException(`The result of the '${name}' is ${num}.`);
+    }
+  }
+}
+
 export class Logger {
   logKernelProfile(
       name: string, result: Tensor, vals: TypedArray, timeMs: number,
diff --git a/tfjs-core/src/profiler_test.ts b/tfjs-core/src/profiler_test.ts
index 445a3c54789..3a7f6545bb1 100644
--- a/tfjs-core/src/profiler_test.ts
+++ b/tfjs-core/src/profiler_test.ts
@@ -18,7 +18,7 @@
 import {BackendTimer, BackendTimingInfo} from './backends/backend';
 import * as tf from './index';
 import {describeWithFlags, SYNC_BACKEND_ENVS} from './jasmine_util';
-import {Logger, Profiler} from './profiler';
+import {checkComputationForErrors, Logger, Profiler} from './profiler';
 import {Tensor} from './tensor';
 import {TypedArray} from './types';
 
@@ -129,3 +129,27 @@ describeWithFlags('profiler.Profiler', SYNC_BACKEND_ENVS, () => {
     }, delayMs * 2);
   });
 });
+
+describe('profiler.checkComputationForErrors', () => {
+  it('Float32Array has NaN', () => {
+    expect(
+        () => checkComputationForErrors(
+            new Float32Array([1, 2, 3, NaN, 4, 255]), 'float32', ''))
+        .toThrow();
+  });
+
+  it('Float32Array has Infinity', () => {
+    expect(
+        () => checkComputationForErrors(
+            new Float32Array([1, 2, 3, Infinity, 4, 255]), 'float32', ''))
+        .toThrow();
+  });
+
+  it('Float32Array no NaN', () => {
+    // Int32 and Bool NaNs should not trigger an error.
+    expect(
+        () => checkComputationForErrors(
+            new Float32Array([1, 2, 3, -1, 4, 255]), 'float32', ''))
+        .not.toThrow();
+  });
+});
diff --git a/tfjs-core/src/util.ts b/tfjs-core/src/util.ts
index f9817c417cc..e36cbd0e5b9 100644
--- a/tfjs-core/src/util.ts
+++ b/tfjs-core/src/util.ts
@@ -405,20 +405,6 @@ export function getArrayFromDType<D extends DataType>(
   return values as DataTypeMap[D];
 }
 
-export function checkComputationForErrors<D extends DataType>(
-    vals: DataTypeMap[D], dtype: D, name: string): void {
-  if (dtype !== 'float32') {
-    // Only floating point computations will generate NaN values
-    return;
-  }
-  for (let i = 0; i < vals.length; i++) {
-    const num = vals[i] as number;
-    if (isNaN(num) || !isFinite(num)) {
-      throw Error(`The result of the '${name}' is ${num}.`);
-    }
-  }
-}
-
 export function checkConversionForErrors<D extends DataType>(
     vals: DataTypeMap[D]|number[], dtype: D): void {
   for (let i = 0; i < vals.length; i++) {
diff --git a/tfjs-core/src/util_test.ts b/tfjs-core/src/util_test.ts
index 7ac5ab1821b..65a1b230f6a 100644
--- a/tfjs-core/src/util_test.ts
+++ b/tfjs-core/src/util_test.ts
@@ -407,30 +407,6 @@ describe('util.squeezeShape', () => {
   });
 });
 
-describe('util.checkComputationForErrors', () => {
-  it('Float32Array has NaN', () => {
-    expect(
-        () => util.checkComputationForErrors(
-            new Float32Array([1, 2, 3, NaN, 4, 255]), 'float32', ''))
-        .toThrowError();
-  });
-
-  it('Float32Array has Infinity', () => {
-    expect(
-        () => util.checkComputationForErrors(
-            new Float32Array([1, 2, 3, Infinity, 4, 255]), 'float32', ''))
-        .toThrowError();
-  });
-
-  it('Float32Array no NaN', () => {
-    // Int32 and Bool NaNs should not trigger an error.
-    expect(
-        () => util.checkComputationForErrors(
-            new Float32Array([1, 2, 3, 4, -1, 255]), 'float32', ''))
-        .not.toThrowError();
-  });
-});
-
 describe('util.checkConversionForErrors', () => {
   it('Float32Array has NaN', () => {
     expect(
diff --git a/tfjs-webgpu/package.json b/tfjs-webgpu/package.json
index f257f356207..69e8cd80d19 100644
--- a/tfjs-webgpu/package.json
+++ b/tfjs-webgpu/package.json
@@ -18,7 +18,7 @@
   },
   "license": "Apache-2.0",
   "devDependencies": {
-    "@tensorflow/tfjs-core": "1.2.1",
+    "@tensorflow/tfjs-core": "1.2.7",
     "@types/jasmine": "~2.5.53",
     "clang-format": "~1.2.2",
     "http-server": "~0.10.0",
@@ -34,6 +34,7 @@
     "rollup-plugin-commonjs": "9.1.3",
     "rollup-plugin-node-resolve": "3.3.0",
     "rollup-plugin-typescript2": "0.13.0",
+    "rollup-plugin-terser": "^5.1.1",
     "rollup-plugin-uglify": "~3.0.0",
     "tslint": "~5.11.0",
     "tslint-no-circular-imports": "^0.5.0",
@@ -47,4 +48,4 @@
   "peerDependencies": {
     "@tensorflow/tfjs-core": "1.2.1"
   }
-}
\ No newline at end of file
+}
diff --git a/tfjs-webgpu/rollup.config.js b/tfjs-webgpu/rollup.config.js
index aa763590c67..8ff5d41bb34 100644
--- a/tfjs-webgpu/rollup.config.js
+++ b/tfjs-webgpu/rollup.config.js
@@ -26,9 +26,7 @@ function config({plugins = [], output = {}, external = []}) {
   return {
     input: 'src/index.ts',
     plugins: [
-      typescript({
-        tsconfigOverride: {compilerOptions: {module: 'ES2015'}}
-      }),
+      typescript({tsconfigOverride: {compilerOptions: {module: 'ES2015'}}}),
       node(),
       // Polyfill require() from dependencies.
       commonjs({
diff --git a/tfjs-webgpu/src/backend_webgpu.ts b/tfjs-webgpu/src/backend_webgpu.ts
index 19fe0055db7..7253798938c 100644
--- a/tfjs-webgpu/src/backend_webgpu.ts
+++ b/tfjs-webgpu/src/backend_webgpu.ts
@@ -19,7 +19,7 @@
 
 import './flags_webgpu';
 
-import {backend_util, DataMover, DataType, ENV, KernelBackend, Rank, ShapeMap, Tensor, Tensor2D, Tensor3D, Tensor4D, util} from '@tensorflow/tfjs-core';
+import {backend_util, DataMover, DataType, ENV, KernelBackend, Rank, ShapeMap, Tensor, Tensor2D, Tensor3D, Tensor4D, TimingInfo, util} from '@tensorflow/tfjs-core';
 import * as shaderc from '@webgpu/shaderc';
 
 import {BufferManager} from './buffer_manager';
@@ -40,12 +40,20 @@ import {UnaryOpProgram} from './kernels/unary_op_webgpu';
 import * as webgpu_program from './kernels/webgpu_program';
 import {WebGPUBinary} from './kernels/webgpu_program';
 
-// TODO: Delete this and import from core once new release is published.
+// START TO-IMPORT-FROM-CORE ============================
+// TODO(annyuan): Delete definitions in this section and import from core once
+// new release is published.
 type MemoryInfo = {
   numTensors: number; numDataBuffers: number; numBytes: number;
   unreliable?: boolean; reasons: string[];
 };
 
+// tslint:disable-next-line:no-any
+interface RecursiveArray<T extends any> {
+  [index: number]: T|RecursiveArray<T>;
+}
+// END TO-IMPORT-FROM-CORE ==============================
+
 export interface WebGPUMemoryInfo extends MemoryInfo {
   numBytesInGPU: number;
   unreliable: boolean;
@@ -66,6 +74,22 @@ type TensorInfo = {
 
 interface DataId {}
 
+export interface CPUTimerQuery {
+  startMs: number;
+  endMs: number;
+}
+
+export type WebGPUKernelInfo = {
+  name: string; query: Promise<number>;
+};
+
+export type TimerNode = RecursiveArray<WebGPUKernelInfo>|WebGPUKernelInfo;
+
+export interface WebGPUTimingInfo extends TimingInfo {
+  uploadWaitMs: number;
+  downloadWaitMs: number;
+}
+
 const DEFAULT_GPUBUFFER_USAGE =
     GPUBufferUsage.STORAGE | GPUBufferUsage.COPY_SRC | GPUBufferUsage.COPY_DST;
 
@@ -86,6 +110,11 @@ export class WebGPUBackend extends KernelBackend {
 
   private disposed = false;
 
+  private programTimersStack: TimerNode[];
+  private activeTimers: TimerNode[];
+  private uploadWaitMs = 0;
+  private downloadWaitMs = 0;
+
   constructor(device: GPUDevice, shaderc: shaderc.Shaderc) {
     super();
     this.binaryCache = {};
@@ -244,6 +273,51 @@ export class WebGPUBackend extends KernelBackend {
     return dataAsTypedArray;
   }
 
+  async time(f: () => void): Promise<WebGPUTimingInfo> {
+    const oldActiveTimers = this.activeTimers;
+    const newActiveTimers: TimerNode[] = [];
+
+    let outerMostTime = false;
+    if (this.programTimersStack == null) {
+      this.programTimersStack = newActiveTimers;
+      outerMostTime = true;
+    } else {
+      this.activeTimers.push(newActiveTimers);
+    }
+    this.activeTimers = newActiveTimers;
+
+    f();
+
+    const flattenedActiveTimerQueries =
+        util.flatten(this.activeTimers.map((d: WebGPUKernelInfo) => d.query))
+            .filter(d => d != null);
+    const flattenedActiveTimerNames =
+        util.flatten(this.activeTimers.map((d: WebGPUKernelInfo) => d.name))
+            .filter(d => d != null);
+
+    this.activeTimers = oldActiveTimers;
+
+    if (outerMostTime) {
+      this.programTimersStack = null;
+    }
+
+    const kernelMs = await Promise.all(flattenedActiveTimerQueries);
+
+    const res: WebGPUTimingInfo = {
+      uploadWaitMs: this.uploadWaitMs,
+      downloadWaitMs: this.downloadWaitMs,
+      kernelMs: util.sum(kernelMs),
+      getExtraProfileInfo: () =>
+          kernelMs.map((d, i) => ({name: flattenedActiveTimerNames[i], ms: d}))
+              .map(d => `${d.name}: ${d.ms}`)
+              .join(', '),
+      wallMs: null
+    };
+    this.uploadWaitMs = 0;
+    this.downloadWaitMs = 0;
+    return res;
+  }
+
   private getAndSavePipeline(
       key: string, getBinary: () => webgpu_program.WebGPUBinary) {
     if (!(key in this.binaryCache)) {
@@ -273,6 +347,20 @@ export class WebGPUBackend extends KernelBackend {
     };
   }
 
+  startTimer() {
+    return {startMs: util.now(), endMs: 0};
+  }
+
+  endTimer(query: CPUTimerQuery) {
+    query.endMs = util.now();
+    return query;
+  }
+
+  async getQueryTime(query: CPUTimerQuery): Promise<number> {
+    const timerQuery = query;
+    return timerQuery.endMs - timerQuery.startMs;
+  }
+
   private compileAndRun<
       K extends {dtype: DataType, size: number, dataId: {}, shape: number[]}>(
       program: webgpu_program.WebGPUProgram, inputs: Tensor[], output?: Tensor,
@@ -345,6 +433,12 @@ export class WebGPUBackend extends KernelBackend {
           this.device, program, inputsData, output, uniforms);
     });
 
+    const shouldTimeProgram = this.activeTimers != null;
+    let query: CPUTimerQuery;
+    if (shouldTimeProgram) {
+      query = this.startTimer();
+    }
+
     // Creating bind groups on the fly should never be a bottleneck.
     const bg = webgpu_program.makeBindGroup(
         this.device, bindGroupLayout, inputs.map(t => this.tensorToBinding(t)),
@@ -370,6 +464,12 @@ export class WebGPUBackend extends KernelBackend {
     this.releaseBuffer(
         uniforms.resource.buffer, uniformData.byteLength,
         GPUBufferUsage.COPY_DST | GPUBufferUsage.UNIFORM);
+
+    if (shouldTimeProgram) {
+      query = this.endTimer(query);
+      this.activeTimers.push(
+          {name: program.constructor.name, query: this.getQueryTime(query)});
+    }
     return output as {} as K;
   }
 
diff --git a/tfjs-webgpu/tsconfig.json b/tfjs-webgpu/tsconfig.json
index ecb732e2195..1dd0670aac9 100644
--- a/tfjs-webgpu/tsconfig.json
+++ b/tfjs-webgpu/tsconfig.json
@@ -7,6 +7,7 @@
     "node_modules/"
   ],
   "compilerOptions": {
-    "outDir": "./dist"
+    "outDir": "./dist",
+    "target": "es2017"
   }
 }
diff --git a/tfjs-webgpu/yarn.lock b/tfjs-webgpu/yarn.lock
index cb989bf7df9..d4bcd6e9fed 100644
--- a/tfjs-webgpu/yarn.lock
+++ b/tfjs-webgpu/yarn.lock
@@ -2,18 +2,33 @@
 # yarn lockfile v1
 
 
-"@tensorflow/tfjs-core@1.2.1":
-  version "1.2.1"
-  resolved "https://registry.yarnpkg.com/@tensorflow/tfjs-core/-/tfjs-core-1.2.1.tgz#0ff54aa7fd412b8c17e39f6ec5a97bf032e8f530"
-  integrity sha512-cpSHl+tP7cketq0cAyJPbIGxNlPV7mR6lkMLLDvZAmZUTBSyBufCdJg/KwgjHMZksE/KqjL4/RyccOGBAQcb7g==
+"@babel/code-frame@^7.0.0":
+  version "7.5.5"
+  resolved "https://registry.yarnpkg.com/@babel/code-frame/-/code-frame-7.5.5.tgz#bc0782f6d69f7b7d49531219699b988f669a8f9d"
+  integrity sha512-27d4lZoomVyo51VegxI20xZPuSHusqbQag/ztrBC7wegWoQ1nLREPVSKSW8byhTlzTKyNE4ifaTA6lCp7JjpFw==
+  dependencies:
+    "@babel/highlight" "^7.0.0"
+
+"@babel/highlight@^7.0.0":
+  version "7.5.0"
+  resolved "https://registry.yarnpkg.com/@babel/highlight/-/highlight-7.5.0.tgz#56d11312bd9248fa619591d02472be6e8cb32540"
+  integrity sha512-7dV4eu9gBxoM0dAnj/BCFDW9LFU0zvTrkq0ugM7pnHEgguOEeOz1so2ZghEdzviYzQEED0r4EAgpsBChKy1TRQ==
   dependencies:
+    chalk "^2.0.0"
+    esutils "^2.0.2"
+    js-tokens "^4.0.0"
+
+"@tensorflow/tfjs-core@1.2.7":
+  version "1.2.7"
+  resolved "https://registry.yarnpkg.com/@tensorflow/tfjs-core/-/tfjs-core-1.2.7.tgz#522328de16470aa9f7c15b91e4b68616f425002a"
+  integrity sha512-RsXavYKMc0MOcCmOyD7HE8am1tWlDGXl0nJbsdib7ubmvMuH6KnrZ302eTYV7k1RMq+/ukkioJmCcw13hopuHQ==
+  dependencies:
+    "@types/offscreencanvas" "~2019.3.0"
     "@types/seedrandom" "2.4.27"
     "@types/webgl-ext" "0.0.30"
     "@types/webgl2" "0.0.4"
     node-fetch "~2.1.2"
     seedrandom "2.4.3"
-  optionalDependencies:
-    rollup-plugin-visualizer "~1.1.1"
 
 "@types/estree@0.0.38":
   version "0.0.38"
@@ -30,6 +45,11 @@
   resolved "https://registry.yarnpkg.com/@types/node/-/node-11.13.4.tgz#f83ec3c3e05b174b7241fadeb6688267fe5b22ca"
   integrity sha512-+rabAZZ3Yn7tF/XPGHupKIL5EcAbrLxnTr/hgQICxbeuAfWtT0UZSfULE+ndusckBItcv4o6ZeOJplQikVcLvQ==
 
+"@types/offscreencanvas@~2019.3.0":
+  version "2019.3.0"
+  resolved "https://registry.yarnpkg.com/@types/offscreencanvas/-/offscreencanvas-2019.3.0.tgz#3336428ec7e9180cf4566dfea5da04eb586a6553"
+  integrity sha512-esIJx9bQg+QYF0ra8GnvfianIY8qWB0GBx54PK5Eps6m+xTj86KLavHv6qDhzKcu5UUOgNfJ2pWaIIV7TRUd9Q==
+
 "@types/seedrandom@2.4.27":
   version "2.4.27"
   resolved "https://registry.yarnpkg.com/@types/seedrandom/-/seedrandom-2.4.27.tgz#9db563937dd86915f69092bc43259d2f48578e41"
@@ -501,6 +521,11 @@ buffer-fill@^1.0.0:
   resolved "https://registry.yarnpkg.com/buffer-fill/-/buffer-fill-1.0.0.tgz#f8f78b76789888ef39f205cd637f68e702122b2c"
   integrity sha1-+PeLdniYiO858gXNY39o5wISKyw=
 
+buffer-from@^1.0.0:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/buffer-from/-/buffer-from-1.1.1.tgz#32713bc028f75c02fdb710d7c7bcec1f2c6070ef"
+  integrity sha512-MQcXEUbCKtEo7bhqEs6560Hyd4XaovZlO/k9V3hjVUF/zwW7KBVdSK4gIt/bzwS9MbR5qob+F5jusZsb0YQK2A==
+
 buffer-indexof-polyfill@~1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/buffer-indexof-polyfill/-/buffer-indexof-polyfill-1.0.1.tgz#a9fb806ce8145d5428510ce72f278bb363a638bf"
@@ -600,7 +625,7 @@ chalk@^1.1.3:
     strip-ansi "^3.0.0"
     supports-color "^2.0.0"
 
-chalk@^2.3.0:
+chalk@^2.0.0, chalk@^2.3.0:
   version "2.4.2"
   resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.4.2.tgz#cd42541677a54333cf541a49108c1432b44c9424"
   integrity sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==
@@ -719,7 +744,7 @@ combine-source-map@^0.8.0:
     lodash.memoize "~3.0.3"
     source-map "~0.5.3"
 
-commander@^2.12.1, commander@~2.20.0:
+commander@^2.12.1, commander@^2.20.0, commander@~2.20.0:
   version "2.20.0"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.20.0.tgz#d58bb2b5c1ee8f87b0d340027e9e94e222c5a422"
   integrity sha512-7j2y+40w61zy6YC2iRNpUe/NwhNyoXrYpHMrSunaMG64nRnaf96zO/KMQR4OyN/UnE5KLyEBnKHd4aG3rskjpQ==
@@ -1974,11 +1999,6 @@ is-windows@^1.0.2:
   resolved "https://registry.yarnpkg.com/is-windows/-/is-windows-1.0.2.tgz#d1850eb9791ecd18e6182ce12a30f396634bb19d"
   integrity sha512-eXK1UInq2bPmjyX6e3VHIzMLobc4J94i4AWn+Hpq3OU5KkrRC96OAcR3PRJ/pGu6m8TRnBHP9dkXQVsT/COVIA==
 
-is-wsl@^1.1.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/is-wsl/-/is-wsl-1.1.0.tgz#1f16e4aa22b04d1336b66188a66af3c600c3a66d"
-  integrity sha1-HxbkqiKwTRM2tmGIpmrzxgDDpm0=
-
 isarray@1.0.0, isarray@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/isarray/-/isarray-1.0.0.tgz#bb935d48582cba168c06834957a54a3e07124f11"
@@ -2038,11 +2058,24 @@ jasmine-core@~3.1.0:
   resolved "https://registry.yarnpkg.com/jasmine-core/-/jasmine-core-3.1.0.tgz#a4785e135d5df65024dfc9224953df585bd2766c"
   integrity sha1-pHheE11d9lAk38kiSVPfWFvSdmw=
 
+jest-worker@^24.6.0:
+  version "24.6.0"
+  resolved "https://registry.yarnpkg.com/jest-worker/-/jest-worker-24.6.0.tgz#7f81ceae34b7cde0c9827a6980c35b7cdc0161b3"
+  integrity sha512-jDwgW5W9qGNvpI1tNnvajh0a5IE/PuGLFmHk6aR/BZFz8tSgGw17GsDPXAJ6p91IvYDjOw8GpFbvvZGAK+DPQQ==
+  dependencies:
+    merge-stream "^1.0.1"
+    supports-color "^6.1.0"
+
 js-tokens@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.2.tgz#9866df395102130e38f7f996bceb65443209c25b"
   integrity sha1-mGbfOVECEw449/mWvOtlRDIJwls=
 
+js-tokens@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"
+  integrity sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==
+
 js-yaml@3.x, js-yaml@^3.7.0:
   version "3.13.1"
   resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.13.1.tgz#aff151b30bfdfa8e49e05da22e7415e9dfa37847"
@@ -2338,6 +2371,13 @@ meow@^3.3.0:
     redent "^1.0.0"
     trim-newlines "^1.0.0"
 
+merge-stream@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/merge-stream/-/merge-stream-1.0.1.tgz#4041202d508a342ba00174008df0c251b8c135e1"
+  integrity sha1-QEEgLVCKNCugAXQAjfDCUbjBNeE=
+  dependencies:
+    readable-stream "^2.0.1"
+
 micromatch@^3.1.10, micromatch@^3.1.4:
   version "3.1.10"
   resolved "https://registry.yarnpkg.com/micromatch/-/micromatch-3.1.10.tgz#70859bc95c9840952f359a068a3fc49f9ecfac23"
@@ -2671,13 +2711,6 @@ opener@~1.4.0:
   resolved "https://registry.yarnpkg.com/opener/-/opener-1.4.3.tgz#5c6da2c5d7e5831e8ffa3964950f8d6674ac90b8"
   integrity sha1-XG2ixdflgx6P+jlklQ+NZnSskLg=
 
-opn@^5.4.0:
-  version "5.5.0"
-  resolved "https://registry.yarnpkg.com/opn/-/opn-5.5.0.tgz#fc7164fab56d235904c51c3b27da6758ca3b9bfc"
-  integrity sha512-PqHpggC9bLV0VeWcdKhkpxY+3JTzetLSqTCWL/z/tFIbI6G8JCjondXklT1JinczLz2Xib62sSp0T/gKT4KksA==
-  dependencies:
-    is-wsl "^1.1.0"
-
 optimist@0.6.x, optimist@^0.6.1:
   version "0.6.1"
   resolved "https://registry.yarnpkg.com/optimist/-/optimist-0.6.1.tgz#da3ea74686fa21a19a111c326e90eb15a0196686"
@@ -3014,7 +3047,7 @@ read-pkg@^1.0.0:
     string_decoder "^1.1.1"
     util-deprecate "^1.0.1"
 
-readable-stream@^2.0.2, readable-stream@^2.0.6, readable-stream@~2.3.6:
+readable-stream@^2.0.1, readable-stream@^2.0.2, readable-stream@^2.0.6, readable-stream@~2.3.6:
   version "2.3.6"
   resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.6.tgz#b11c27d88b8ff1fbe070643cf94b0c79ae1b0aaf"
   integrity sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==
@@ -3168,6 +3201,17 @@ rollup-plugin-node-resolve@3.3.0:
     is-module "^1.0.0"
     resolve "^1.1.6"
 
+rollup-plugin-terser@^5.1.1:
+  version "5.1.1"
+  resolved "https://registry.yarnpkg.com/rollup-plugin-terser/-/rollup-plugin-terser-5.1.1.tgz#e9d2545ec8d467f96ba99b9216d2285aad8d5b66"
+  integrity sha512-McIMCDEY8EU6Y839C09UopeRR56wXHGdvKKjlfiZG/GrP6wvZQ62u2ko/Xh1MNH2M9WDL+obAAHySljIZYCuPQ==
+  dependencies:
+    "@babel/code-frame" "^7.0.0"
+    jest-worker "^24.6.0"
+    rollup-pluginutils "^2.8.1"
+    serialize-javascript "^1.7.0"
+    terser "^4.1.0"
+
 rollup-plugin-typescript2@0.13.0:
   version "0.13.0"
   resolved "https://registry.yarnpkg.com/rollup-plugin-typescript2/-/rollup-plugin-typescript2-0.13.0.tgz#5fc838657d05af82e04554832cadf06cdb32f657"
@@ -3185,17 +3229,7 @@ rollup-plugin-uglify@~3.0.0:
   dependencies:
     uglify-es "^3.3.7"
 
-rollup-plugin-visualizer@~1.1.1:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/rollup-plugin-visualizer/-/rollup-plugin-visualizer-1.1.1.tgz#454ae0aed23845407ebfb81cc52114af308d6d90"
-  integrity sha512-7xkSKp+dyJmSC7jg2LXqViaHuOnF1VvIFCnsZEKjrgT5ZVyiLLSbeszxFcQSfNJILphqgAEmWAUz0Z4xYScrRw==
-  dependencies:
-    mkdirp "^0.5.1"
-    opn "^5.4.0"
-    source-map "^0.7.3"
-    typeface-oswald "0.0.54"
-
-rollup-pluginutils@^2.0.1:
+rollup-pluginutils@^2.0.1, rollup-pluginutils@^2.8.1:
   version "2.8.1"
   resolved "https://registry.yarnpkg.com/rollup-pluginutils/-/rollup-pluginutils-2.8.1.tgz#8fa6dd0697344938ef26c2c09d2488ce9e33ce97"
   integrity sha512-J5oAoysWar6GuZo0s+3bZ6sVZAC0pfqKz68De7ZgDi5z63jOVZn1uJL/+z1jeKHNbGII8kAyHF5q8LnxSX5lQg==
@@ -3247,6 +3281,11 @@ seedrandom@2.4.3:
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.7.0.tgz#790a7cf6fea5459bac96110b29b60412dc8ff96b"
   integrity sha512-Ya52jSX2u7QKghxeoFGpLwCtGlt7j0oY9DYb5apt9nPlJ42ID+ulTXESnt/qAQcoSERyZ5sl3LDIOw0nAn/5DA==
 
+serialize-javascript@^1.7.0:
+  version "1.7.0"
+  resolved "https://registry.yarnpkg.com/serialize-javascript/-/serialize-javascript-1.7.0.tgz#d6e0dfb2a3832a8c94468e6eb1db97e55a192a65"
+  integrity sha512-ke8UG8ulpFOxO8f8gRYabHQe/ZntKlcig2Mp+8+URDP1D8vJZ0KUt7LYo07q25Z/+JVSgpr/cui9PIp5H6/+nA==
+
 set-blocking@^2.0.0, set-blocking@~2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/set-blocking/-/set-blocking-2.0.0.tgz#045f9782d011ae9a6803ddd382b24392b3d890f7"
@@ -3372,12 +3411,20 @@ source-map-resolve@^0.5.0:
     source-map-url "^0.4.0"
     urix "^0.1.0"
 
+source-map-support@~0.5.12:
+  version "0.5.13"
+  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.13.tgz#31b24a9c2e73c2de85066c0feb7d44767ed52932"
+  integrity sha512-SHSKFHadjVA5oR4PPqhtAVdcBWwRYVd6g6cAXnIbRiIwc2EhPrTuKUBdSLvlEKyIP3GCf89fltvcZiP9MMFA1w==
+  dependencies:
+    buffer-from "^1.0.0"
+    source-map "^0.6.0"
+
 source-map-url@^0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/source-map-url/-/source-map-url-0.4.0.tgz#3e935d7ddd73631b97659956d55128e87b5084a3"
   integrity sha1-PpNdfd1zYxuXZZlW1VEo6HtQhKM=
 
-source-map@0.6.1, source-map@^0.6.1, source-map@~0.6.1:
+source-map@0.6.1, source-map@^0.6.0, source-map@^0.6.1, source-map@~0.6.1:
   version "0.6.1"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.6.1.tgz#74722af32e9614e9c287a8d0bbde48b5e2f1a263"
   integrity sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==
@@ -3567,6 +3614,13 @@ supports-color@^5.3.0:
   dependencies:
     has-flag "^3.0.0"
 
+supports-color@^6.1.0:
+  version "6.1.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-6.1.0.tgz#0764abc69c63d5ac842dd4867e8d025e880df8f3"
+  integrity sha512-qe1jfm1Mg7Nq/NSh6XE24gPXROEVsWHxC1LIx//XNlD9iw7YZQGjZNjYN7xGaEG6iKdA8EtNFW6R0gjnVXp+wQ==
+  dependencies:
+    has-flag "^3.0.0"
+
 tar@^4:
   version "4.4.8"
   resolved "https://registry.yarnpkg.com/tar/-/tar-4.4.8.tgz#b19eec3fde2a96e64666df9fdb40c5ca1bc3747d"
@@ -3580,6 +3634,15 @@ tar@^4:
     safe-buffer "^5.1.2"
     yallist "^3.0.2"
 
+terser@^4.1.0:
+  version "4.1.4"
+  resolved "https://registry.yarnpkg.com/terser/-/terser-4.1.4.tgz#4478b6a08bb096a61e793fea1a4434408bab936c"
+  integrity sha512-+ZwXJvdSwbd60jG0Illav0F06GDJF0R4ydZ21Q3wGAFKoBGyJGo34F63vzJHgvYxc1ukOtIjvwEvl9MkjzM6Pg==
+  dependencies:
+    commander "^2.20.0"
+    source-map "~0.6.1"
+    source-map-support "~0.5.12"
+
 through2@3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/through2/-/through2-3.0.0.tgz#468b461df9cd9fcc170f22ebf6852e467e578ff2"
@@ -3709,11 +3772,6 @@ type-is@~1.6.16:
     media-typer "0.3.0"
     mime-types "~2.1.18"
 
-typeface-oswald@0.0.54:
-  version "0.0.54"
-  resolved "https://registry.yarnpkg.com/typeface-oswald/-/typeface-oswald-0.0.54.tgz#1e253011622cdd50f580c04e7d625e7f449763d7"
-  integrity sha512-U1WMNp4qfy4/3khIfHMVAIKnNu941MXUfs3+H9R8PFgnoz42Hh9pboSFztWr86zut0eXC8byalmVhfkiKON/8Q==
-
 typescript@3.3.3333:
   version "3.3.3333"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.3.3333.tgz#171b2c5af66c59e9431199117a3bcadc66fdcfd6"