diff --git a/.github/workflows/mocks.yml b/.github/workflows/mocks.yml
deleted file mode 100644
index 6a5b5d6b7..000000000
--- a/.github/workflows/mocks.yml
+++ /dev/null
@@ -1,25 +0,0 @@
-name: shared/mocks
-
-on:
-  push:
-    branches: [main, 'feat/**']
-    paths-ignore:
-      - '**.md' #Do not need to run CI for markdown changes.
-  pull_request:
-    branches: [main, 'feat/**']
-    paths-ignore:
-      - '**.md'
-
-jobs:
-  build-test-mocks:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
-      - id: shared
-        name: Shared CI Steps
-        uses: ./actions/ci
-        with:
-          workspace_name: '@launchdarkly/private-js-mocks'
-          workspace_path: packages/shared/mocks
-          should_build_docs: false
diff --git a/.github/workflows/react-native-detox.yml b/.github/workflows/react-native-detox.yml
index d42886a67..1b491d0de 100644
--- a/.github/workflows/react-native-detox.yml
+++ b/.github/workflows/react-native-detox.yml
@@ -16,7 +16,6 @@ on:
       - 'packages/shared/common/**'
       - 'packages/shared/sdk-client/**'
       - 'packages/sdk/react-native/**'
-      - 'packages/shared/mocks/**'
 
 jobs:
   detox-android:
diff --git a/package.json b/package.json
index dd94fbcb1..2778c9e9d 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,6 @@
   "name": "@launchdarkly/js-core",
   "workspaces": [
     "packages/shared/common",
-    "packages/shared/mocks",
     "packages/shared/sdk-client",
     "packages/shared/sdk-server",
     "packages/shared/sdk-server-edge",
diff --git a/packages/sdk/browser/package.json b/packages/sdk/browser/package.json
index 96ff6bcf4..6cc036846 100644
--- a/packages/sdk/browser/package.json
+++ b/packages/sdk/browser/package.json
@@ -40,7 +40,6 @@
   },
   "devDependencies": {
     "@jest/globals": "^29.7.0",
-    "@launchdarkly/private-js-mocks": "0.0.1",
     "@rollup/plugin-commonjs": "^25.0.0",
     "@rollup/plugin-json": "^6.1.0",
     "@rollup/plugin-node-resolve": "^15.0.2",
diff --git a/packages/sdk/cloudflare/jsr.json b/packages/sdk/cloudflare/jsr.json
index 39c3d457d..6ebe70663 100644
--- a/packages/sdk/cloudflare/jsr.json
+++ b/packages/sdk/cloudflare/jsr.json
@@ -3,15 +3,7 @@
   "version": "2.5.14",
   "exports": "./src/index.ts",
   "publish": {
-    "include": [
-      "LICENSE",
-      "README.md",
-      "package.json",
-      "jsr.json",
-      "src/**/*.ts"
-    ],
-    "exclude": [
-      "src/**/*.test.ts"
-    ]
+    "include": ["LICENSE", "README.md", "package.json", "jsr.json", "src/**/*.ts"],
+    "exclude": ["src/**/*.test.ts"]
   }
 }
diff --git a/packages/sdk/react-native/__tests__/fromExternal/react-native-sse/EventSource.test.ts b/packages/sdk/react-native/__tests__/fromExternal/react-native-sse/EventSource.test.ts
index f6c4173ad..a7d323fa9 100644
--- a/packages/sdk/react-native/__tests__/fromExternal/react-native-sse/EventSource.test.ts
+++ b/packages/sdk/react-native/__tests__/fromExternal/react-native-sse/EventSource.test.ts
@@ -1,15 +1,19 @@
-import { type EventName } from '@launchdarkly/js-client-sdk-common';
-import { createLogger } from '@launchdarkly/private-js-mocks';
+import { type EventName, LDLogger } from '@launchdarkly/js-client-sdk-common';
 
 import EventSource, {
   backoff,
   jitter,
 } from '../../../src/fromExternal/react-native-sse/EventSource';
 
-let logger: ReturnType<typeof createLogger>;
+let logger: LDLogger;
 
 beforeEach(() => {
-  logger = createLogger();
+  logger = {
+    error: jest.fn(),
+    warn: jest.fn(),
+    info: jest.fn(),
+    debug: jest.fn(),
+  };
 });
 
 describe('EventSource', () => {
diff --git a/packages/sdk/react-native/package.json b/packages/sdk/react-native/package.json
index 2a045f012..6419af347 100644
--- a/packages/sdk/react-native/package.json
+++ b/packages/sdk/react-native/package.json
@@ -46,7 +46,6 @@
     "base64-js": "^1.5.1"
   },
   "devDependencies": {
-    "@launchdarkly/private-js-mocks": "0.0.1",
     "@testing-library/react": "^14.1.2",
     "@trivago/prettier-plugin-sort-imports": "^4.1.1",
     "@types/jest": "^29.5.11",
diff --git a/packages/sdk/server-node/__tests__/LDClientNode.listeners.test.ts b/packages/sdk/server-node/__tests__/LDClientNode.listeners.test.ts
index 182488b15..2a8fd8cce 100644
--- a/packages/sdk/server-node/__tests__/LDClientNode.listeners.test.ts
+++ b/packages/sdk/server-node/__tests__/LDClientNode.listeners.test.ts
@@ -1,15 +1,18 @@
-import { integrations } from '@launchdarkly/js-server-sdk-common';
-import { createLogger } from '@launchdarkly/private-js-mocks';
+import { integrations, LDLogger } from '@launchdarkly/js-server-sdk-common';
 
 import { Context, LDClient } from '../src';
 import LDClientNode from '../src/LDClientNode';
 
-let logger: ReturnType<typeof createLogger>;
+let logger: LDLogger;
 
 beforeEach(() => {
-  logger = createLogger();
+  logger = {
+    error: jest.fn(),
+    warn: jest.fn(),
+    info: jest.fn(),
+    debug: jest.fn(),
+  };
 });
-
 describe('given an LDClient with test data', () => {
   let client: LDClient;
   let td: integrations.TestData;
diff --git a/packages/sdk/server-node/__tests__/LDClientNode.test.ts b/packages/sdk/server-node/__tests__/LDClientNode.test.ts
index 28d8cb1d6..8de453297 100644
--- a/packages/sdk/server-node/__tests__/LDClientNode.test.ts
+++ b/packages/sdk/server-node/__tests__/LDClientNode.test.ts
@@ -1,12 +1,16 @@
-import { LDContext } from '@launchdarkly/js-server-sdk-common';
-import { createLogger } from '@launchdarkly/private-js-mocks';
+import { LDContext, LDLogger } from '@launchdarkly/js-server-sdk-common';
 
 import { init } from '../src';
 
-let logger: ReturnType<typeof createLogger>;
+let logger: LDLogger;
 
 beforeEach(() => {
-  logger = createLogger();
+  logger = {
+    error: jest.fn(),
+    warn: jest.fn(),
+    info: jest.fn(),
+    debug: jest.fn(),
+  };
 });
 
 it('fires ready event in offline mode', (done) => {
diff --git a/packages/sdk/server-node/__tests__/LDClientNode.tls.test.ts b/packages/sdk/server-node/__tests__/LDClientNode.tls.test.ts
index 2034b49f4..11454bb43 100644
--- a/packages/sdk/server-node/__tests__/LDClientNode.tls.test.ts
+++ b/packages/sdk/server-node/__tests__/LDClientNode.tls.test.ts
@@ -6,15 +6,18 @@ import {
   TestHttpServer,
 } from 'launchdarkly-js-test-helpers';
 
-import { createLogger } from '@launchdarkly/private-js-mocks';
-
-import { LDClient } from '../src';
+import { LDClient, LDLogger } from '../src';
 import LDClientNode from '../src/LDClientNode';
 
-let logger: ReturnType<typeof createLogger>;
+let logger: LDLogger;
 
 beforeEach(() => {
-  logger = createLogger();
+  logger = {
+    error: jest.fn(),
+    warn: jest.fn(),
+    info: jest.fn(),
+    debug: jest.fn(),
+  };
 });
 
 describe('When using a TLS connection', () => {
diff --git a/packages/sdk/server-node/package.json b/packages/sdk/server-node/package.json
index a8d2958bd..eaceeedd9 100644
--- a/packages/sdk/server-node/package.json
+++ b/packages/sdk/server-node/package.json
@@ -50,7 +50,6 @@
     "launchdarkly-eventsource": "2.0.3"
   },
   "devDependencies": {
-    "@launchdarkly/private-js-mocks": "0.0.1",
     "@trivago/prettier-plugin-sort-imports": "^4.1.1",
     "@types/jest": "^29.4.0",
     "@typescript-eslint/eslint-plugin": "^6.20.0",
diff --git a/packages/shared/mocks/src/contextDeduplicator.ts b/packages/shared/common/__tests__/contextDeduplicator.ts
similarity index 82%
rename from packages/shared/mocks/src/contextDeduplicator.ts
rename to packages/shared/common/__tests__/contextDeduplicator.ts
index b04d0d277..0c4ff2b8f 100644
--- a/packages/shared/mocks/src/contextDeduplicator.ts
+++ b/packages/shared/common/__tests__/contextDeduplicator.ts
@@ -1,4 +1,5 @@
-import type { Context, subsystem } from '@common';
+import { subsystem } from '../src/api';
+import Context from '../src/Context';
 
 export default class ContextDeduplicator implements subsystem.LDContextDeduplicator {
   flushInterval?: number | undefined = 0.1;
diff --git a/packages/shared/mocks/src/platform.ts b/packages/shared/common/__tests__/createBasicPlatform.ts
similarity index 92%
rename from packages/shared/mocks/src/platform.ts
rename to packages/shared/common/__tests__/createBasicPlatform.ts
index e3b0b9ecc..6b64d40dd 100644
--- a/packages/shared/mocks/src/platform.ts
+++ b/packages/shared/common/__tests__/createBasicPlatform.ts
@@ -1,6 +1,5 @@
-import type { PlatformData, SdkData } from '@common';
-
-import { setupCrypto } from './crypto';
+import { PlatformData, SdkData } from '../src/api';
+import { setupCrypto } from './setupCrypto';
 
 const setupInfo = () => ({
   platformData: jest.fn(
diff --git a/packages/shared/common/src/internal/diagnostics/DiagnosticsManager.test.ts b/packages/shared/common/__tests__/internal/diagnostics/DiagnosticsManager.test.ts
similarity index 95%
rename from packages/shared/common/src/internal/diagnostics/DiagnosticsManager.test.ts
rename to packages/shared/common/__tests__/internal/diagnostics/DiagnosticsManager.test.ts
index c73d02007..6cfa7b6a8 100644
--- a/packages/shared/common/src/internal/diagnostics/DiagnosticsManager.test.ts
+++ b/packages/shared/common/__tests__/internal/diagnostics/DiagnosticsManager.test.ts
@@ -1,6 +1,5 @@
-import { createBasicPlatform } from '@launchdarkly/private-js-mocks';
-
-import DiagnosticsManager from './DiagnosticsManager';
+import DiagnosticsManager from '../../../src/internal/diagnostics/DiagnosticsManager';
+import { createBasicPlatform } from '../../createBasicPlatform';
 
 describe('given a diagnostics manager', () => {
   const dateNowString = '2023-08-10';
diff --git a/packages/shared/common/__tests__/internal/events/EventProcessor.test.ts b/packages/shared/common/__tests__/internal/events/EventProcessor.test.ts
index e972fa46e..82de97679 100644
--- a/packages/shared/common/__tests__/internal/events/EventProcessor.test.ts
+++ b/packages/shared/common/__tests__/internal/events/EventProcessor.test.ts
@@ -1,10 +1,5 @@
-import {
-  ContextDeduplicator,
-  createBasicPlatform,
-  createLogger,
-} from '@launchdarkly/private-js-mocks';
-
 import { LDContextCommon, LDMultiKindContext } from '../../../src/api/context';
+import { LDLogger } from '../../../src/api/logging/LDLogger';
 import { LDContextDeduplicator, LDDeliveryStatus, LDEventType } from '../../../src/api/subsystem';
 import Context from '../../../src/Context';
 import { EventProcessor, InputIdentifyEvent } from '../../../src/internal';
@@ -13,13 +8,20 @@ import shouldSample from '../../../src/internal/events/sampling';
 import BasicLogger from '../../../src/logging/BasicLogger';
 import format from '../../../src/logging/format';
 import ClientContext from '../../../src/options/ClientContext';
+import ContextDeduplicator from '../../contextDeduplicator';
+import { createBasicPlatform } from '../../createBasicPlatform';
 
 let mockPlatform: ReturnType<typeof createBasicPlatform>;
 let clientContext: ClientContext;
-let logger: ReturnType<typeof createLogger>;
+let logger: LDLogger;
 
 beforeEach(() => {
-  logger = createLogger();
+  logger = {
+    error: jest.fn(),
+    warn: jest.fn(),
+    info: jest.fn(),
+    debug: jest.fn(),
+  };
   mockPlatform = createBasicPlatform();
   clientContext = {
     basicConfiguration: {
diff --git a/packages/shared/common/src/internal/events/EventSender.test.ts b/packages/shared/common/__tests__/internal/events/EventSender.test.ts
similarity index 84%
rename from packages/shared/common/src/internal/events/EventSender.test.ts
rename to packages/shared/common/__tests__/internal/events/EventSender.test.ts
index 3bd27d77c..2e4c3f3dd 100644
--- a/packages/shared/common/src/internal/events/EventSender.test.ts
+++ b/packages/shared/common/__tests__/internal/events/EventSender.test.ts
@@ -1,21 +1,20 @@
-import { createBasicPlatform } from '@launchdarkly/private-js-mocks';
-
-import { Info, PlatformData, SdkData } from '../../api';
-import { LDDeliveryStatus, LDEventSenderResult, LDEventType } from '../../api/subsystem';
-import { ApplicationTags, ClientContext } from '../../options';
-import EventSender from './EventSender';
+import { Info, PlatformData, SdkData } from '../../../src/api';
+import { LDDeliveryStatus, LDEventSenderResult, LDEventType } from '../../../src/api/subsystem';
+import EventSender from '../../../src/internal/events/EventSender';
+import { ApplicationTags, ClientContext } from '../../../src/options';
+import { createBasicPlatform } from '../../createBasicPlatform';
 
 let mockPlatform: ReturnType<typeof createBasicPlatform>;
 
+function runWithTimers<T>(fn: () => Promise<T>) {
+  const promise = fn();
+  return jest.runAllTimersAsync().then(() => promise);
+}
+
 beforeEach(() => {
   mockPlatform = createBasicPlatform();
 });
 
-jest.mock('../../utils', () => {
-  const actual = jest.requireActual('../../utils');
-  return { ...actual, sleep: jest.fn() };
-});
-
 const basicConfig = {
   tags: new ApplicationTags({ application: { id: 'testApplication1', version: '1.0.0' } }),
   serviceEndpoints: {
@@ -120,9 +119,8 @@ describe('given an event sender', () => {
       },
     );
 
-    eventSenderResult = await eventSender.sendEventData(
-      LDEventType.AnalyticsEvents,
-      testEventData1,
+    eventSenderResult = await runWithTimers(() =>
+      eventSender.sendEventData(LDEventType.AnalyticsEvents, testEventData1),
     );
   });
 
@@ -142,9 +140,8 @@ describe('given an event sender', () => {
 
   it('includes the payload', async () => {
     const { status: status1 } = eventSenderResult;
-    const { status: status2 } = await eventSender.sendEventData(
-      LDEventType.DiagnosticEvent,
-      testEventData2,
+    const { status: status2 } = await runWithTimers(() =>
+      eventSender.sendEventData(LDEventType.DiagnosticEvent, testEventData2),
     );
 
     expect(status1).toEqual(LDDeliveryStatus.Succeeded);
@@ -168,7 +165,9 @@ describe('given an event sender', () => {
 
   it('sends a unique payload for analytics events', async () => {
     // send the same request again to assert unique uuids
-    await eventSender.sendEventData(LDEventType.AnalyticsEvents, testEventData1);
+    await runWithTimers(() =>
+      eventSender.sendEventData(LDEventType.AnalyticsEvents, testEventData1),
+    );
 
     expect(mockFetch).toHaveBeenCalledTimes(2);
     expect(mockFetch).toHaveBeenNthCalledWith(
@@ -190,9 +189,8 @@ describe('given an event sender', () => {
   describe.each([400, 408, 429, 503])('given recoverable errors', (responseStatusCode) => {
     beforeEach(async () => {
       setupMockFetch(responseStatusCode);
-      eventSenderResult = await eventSender.sendEventData(
-        LDEventType.AnalyticsEvents,
-        testEventData1,
+      eventSenderResult = await runWithTimers(() =>
+        eventSender.sendEventData(LDEventType.AnalyticsEvents, testEventData1),
       );
     });
 
@@ -210,9 +208,8 @@ describe('given an event sender', () => {
 
   it('given a result for too large of a payload', async () => {
     setupMockFetch(413);
-    eventSenderResult = await eventSender.sendEventData(
-      LDEventType.AnalyticsEvents,
-      testEventData1,
+    eventSenderResult = await runWithTimers(() =>
+      eventSender.sendEventData(LDEventType.AnalyticsEvents, testEventData1),
     );
 
     const errorMessage = `Received error 413 for event posting - giving up permanently`;
@@ -228,9 +225,8 @@ describe('given an event sender', () => {
   describe.each([401, 403])('given unrecoverable errors', (responseStatusCode) => {
     beforeEach(async () => {
       setupMockFetch(responseStatusCode);
-      eventSenderResult = await eventSender.sendEventData(
-        LDEventType.AnalyticsEvents,
-        testEventData1,
+      eventSenderResult = await runWithTimers(() =>
+        eventSender.sendEventData(LDEventType.AnalyticsEvents, testEventData1),
       );
     });
 
diff --git a/packages/shared/common/src/internal/stream/StreamingProcessor.test.ts b/packages/shared/common/__tests__/internal/stream/StreamingProcessor.test.ts
similarity index 92%
rename from packages/shared/common/src/internal/stream/StreamingProcessor.test.ts
rename to packages/shared/common/__tests__/internal/stream/StreamingProcessor.test.ts
index 56f738da5..293e35124 100644
--- a/packages/shared/common/src/internal/stream/StreamingProcessor.test.ts
+++ b/packages/shared/common/__tests__/internal/stream/StreamingProcessor.test.ts
@@ -1,14 +1,13 @@
-import { createBasicPlatform, createLogger } from '@launchdarkly/private-js-mocks';
+import { EventName, Info, LDLogger, ProcessStreamResponse } from '../../../src/api';
+import { LDStreamProcessor } from '../../../src/api/subsystem';
+import { DataSourceErrorKind } from '../../../src/datasource/DataSourceErrorKinds';
+import { LDStreamingError } from '../../../src/datasource/errors';
+import { DiagnosticsManager } from '../../../src/internal/diagnostics';
+import StreamingProcessor from '../../../src/internal/stream/StreamingProcessor';
+import { defaultHeaders } from '../../../src/utils';
+import { createBasicPlatform } from '../../createBasicPlatform';
 
-import { EventName, Info, LDLogger, ProcessStreamResponse } from '../../api';
-import { LDStreamProcessor } from '../../api/subsystem';
-import { DataSourceErrorKind } from '../../datasource/DataSourceErrorKinds';
-import { LDStreamingError } from '../../datasource/errors';
-import { defaultHeaders } from '../../utils';
-import { DiagnosticsManager } from '../diagnostics';
-import StreamingProcessor from './StreamingProcessor';
-
-let logger: ReturnType<typeof createLogger>;
+let logger: LDLogger;
 
 const serviceEndpoints = {
   events: '',
@@ -44,7 +43,12 @@ let basicPlatform: any;
 
 beforeEach(() => {
   basicPlatform = createBasicPlatform();
-  logger = createLogger();
+  logger = {
+    error: jest.fn(),
+    warn: jest.fn(),
+    info: jest.fn(),
+    debug: jest.fn(),
+  };
 });
 
 const createMockEventSource = (streamUri: string = '', options: any = {}) => ({
diff --git a/packages/shared/common/__tests__/options/ApplicationTags.test.ts b/packages/shared/common/__tests__/options/ApplicationTags.test.ts
index 51ae58449..ffc51b3d9 100644
--- a/packages/shared/common/__tests__/options/ApplicationTags.test.ts
+++ b/packages/shared/common/__tests__/options/ApplicationTags.test.ts
@@ -1,10 +1,16 @@
-import { createLogger } from '@launchdarkly/private-js-mocks';
-
 import ApplicationTags from '../../src/options/ApplicationTags';
 
 describe.each([
   [
-    { application: { id: 'is-valid', version: 'also-valid' }, logger: createLogger() },
+    {
+      application: { id: 'is-valid', version: 'also-valid' },
+      logger: {
+        error: jest.fn(),
+        warn: jest.fn(),
+        info: jest.fn(),
+        debug: jest.fn(),
+      },
+    },
     'application-id/is-valid application-version/also-valid',
     [],
   ],
@@ -16,36 +22,105 @@ describe.each([
         name: 'test-app-1',
         versionName: 'test-version-1',
       },
-      logger: createLogger(),
+      logger: {
+        error: jest.fn(),
+        warn: jest.fn(),
+        info: jest.fn(),
+        debug: jest.fn(),
+      },
     },
     'application-id/is-valid application-name/test-app-1 application-version/also-valid application-version-name/test-version-1',
     [],
   ],
-  [{ application: { id: 'is-valid' }, logger: createLogger() }, 'application-id/is-valid', []],
   [
-    { application: { version: 'also-valid' }, logger: createLogger() },
+    {
+      application: { id: 'is-valid' },
+      logger: {
+        error: jest.fn(),
+        warn: jest.fn(),
+        info: jest.fn(),
+        debug: jest.fn(),
+      },
+    },
+    'application-id/is-valid',
+    [],
+  ],
+  [
+    {
+      application: { version: 'also-valid' },
+      logger: {
+        error: jest.fn(),
+        warn: jest.fn(),
+        info: jest.fn(),
+        debug: jest.fn(),
+      },
+    },
     'application-version/also-valid',
     [],
   ],
-  [{ application: {}, logger: createLogger() }, undefined, []],
-  [{ logger: createLogger() }, undefined, []],
+  [
+    {
+      application: {},
+      logger: {
+        error: jest.fn(),
+        warn: jest.fn(),
+        info: jest.fn(),
+        debug: jest.fn(),
+      },
+    },
+    undefined,
+    [],
+  ],
+  [
+    {
+      logger: {
+        error: jest.fn(),
+        warn: jest.fn(),
+        info: jest.fn(),
+        debug: jest.fn(),
+      },
+    },
+    undefined,
+    [],
+  ],
   [undefined, undefined, []],
 
   // Above ones are 'valid' cases. Below are invalid.
   [
-    { application: { id: 'bad tag' }, logger: createLogger() },
+    {
+      application: { id: 'bad tag' },
+      logger: {
+        error: jest.fn(),
+        warn: jest.fn(),
+        info: jest.fn(),
+        debug: jest.fn(),
+      },
+    },
     undefined,
     [/Config option "application.id" must/],
   ],
   [
-    { application: { id: 'bad tag', version: 'good-tag' }, logger: createLogger() },
+    {
+      application: { id: 'bad tag', version: 'good-tag' },
+      logger: {
+        error: jest.fn(),
+        warn: jest.fn(),
+        info: jest.fn(),
+        debug: jest.fn(),
+      },
+    },
     'application-version/good-tag',
     [/Config option "application.id" must/],
   ],
   [
     {
       application: { id: 'bad tag', version: 'good-tag', name: '', versionName: 'test-version-1' },
-      logger: createLogger(),
+      logger: {
+        error: jest.fn(),
+        warn: jest.fn(),
+        info: jest.fn(),
+        debug: jest.fn(),
+      },
     },
     'application-version/good-tag application-version-name/test-version-1',
     [/Config option "application.id" must/, /Config option "application.name" must/],
@@ -58,7 +133,12 @@ describe.each([
         name: 'invalid name',
         versionName: 'invalid version name',
       },
-      logger: createLogger(),
+      logger: {
+        error: jest.fn(),
+        warn: jest.fn(),
+        info: jest.fn(),
+        debug: jest.fn(),
+      },
     },
     undefined,
     [
diff --git a/packages/shared/mocks/src/crypto.ts b/packages/shared/common/__tests__/setupCrypto.ts
similarity index 91%
rename from packages/shared/mocks/src/crypto.ts
rename to packages/shared/common/__tests__/setupCrypto.ts
index 8a7d9a625..72b2d13ef 100644
--- a/packages/shared/mocks/src/crypto.ts
+++ b/packages/shared/common/__tests__/setupCrypto.ts
@@ -1,4 +1,4 @@
-import type { Hasher } from '@common';
+import { Hasher } from '../src/api';
 
 export const setupCrypto = () => {
   let counter = 0;
diff --git a/packages/shared/common/package.json b/packages/shared/common/package.json
index 19de8318f..8c2f2e666 100644
--- a/packages/shared/common/package.json
+++ b/packages/shared/common/package.json
@@ -30,7 +30,6 @@
   },
   "license": "Apache-2.0",
   "devDependencies": {
-    "@launchdarkly/private-js-mocks": "0.0.1",
     "@trivago/prettier-plugin-sort-imports": "^4.1.1",
     "@types/jest": "^29.4.0",
     "@typescript-eslint/eslint-plugin": "^6.20.0",
diff --git a/packages/shared/common/rollup.config.js b/packages/shared/common/rollup.config.js
new file mode 100644
index 000000000..d8fb93ed9
--- /dev/null
+++ b/packages/shared/common/rollup.config.js
@@ -0,0 +1,43 @@
+import common from '@rollup/plugin-commonjs';
+import json from '@rollup/plugin-json';
+import resolve from '@rollup/plugin-node-resolve';
+import terser from '@rollup/plugin-terser';
+import typescript from '@rollup/plugin-typescript';
+
+const getSharedConfig = (format, file) => ({
+  input: 'src/index.ts',
+  output: [
+    {
+      format: format,
+      sourcemap: true,
+      file: file,
+    },
+  ],
+  onwarn: (warning) => {
+    if (warning.code !== 'CIRCULAR_DEPENDENCY') {
+      console.error(`(!) ${warning.message}`);
+    }
+  },
+});
+
+export default [
+  {
+    ...getSharedConfig('es', 'dist/index.es.js'),
+    plugins: [
+      typescript({
+        module: 'esnext',
+      }),
+      common({
+        transformMixedEsModules: true,
+        esmExternals: true,
+      }),
+      resolve(),
+      terser(),
+      json(),
+    ],
+  },
+  {
+    ...getSharedConfig('cjs', 'dist/index.cjs.js'),
+    plugins: [typescript(), common(), resolve(), terser(), json()],
+  },
+];
diff --git a/packages/shared/mocks/CHANGELOG.md b/packages/shared/mocks/CHANGELOG.md
deleted file mode 100644
index cc1a5afb9..000000000
--- a/packages/shared/mocks/CHANGELOG.md
+++ /dev/null
@@ -1,3 +0,0 @@
-# Changelog
-
-All notable changes to `@launchdarkly/private-js-mocks` will be documented in this file. This project adheres to [Semantic Versioning](http://semver.org).
diff --git a/packages/shared/mocks/LICENSE b/packages/shared/mocks/LICENSE
deleted file mode 100644
index ab8bd335b..000000000
--- a/packages/shared/mocks/LICENSE
+++ /dev/null
@@ -1,13 +0,0 @@
-Copyright 2023 Catamorphic, Co.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
diff --git a/packages/shared/mocks/README.md b/packages/shared/mocks/README.md
deleted file mode 100644
index 2d178b398..000000000
--- a/packages/shared/mocks/README.md
+++ /dev/null
@@ -1,131 +0,0 @@
-# LaunchDarkly SDK JavaScript Mocks
-
-[![Actions Status][mocks-ci-badge]][mocks-ci]
-
-> [!CAUTION]
-> Internal use only.
-> This project contains JavaScript mocks that are consumed in unit tests in client-side and server-side JavaScript SDKs.
-
-## Installation
-
-This package is not published publicly. To use it internally, add the following line to your project's package.json
-devDependencies. yarn workspace has been setup to recognize this package so this dependency should automatically work:
-
-```bash
-  "devDependencies": {
-    "@launchdarkly/private-js-mocks": "0.0.1",
-    ...
-```
-
-Then in your jest config add `@launchdarkly/private-js-mocks/setup` to setupFilesAfterEnv:
-
-```js
-// jest.config.js or jest.config.json
-module.exports = {
-  setupFilesAfterEnv: ['@launchdarkly/private-js-mocks/setup'],
-  ...
-}
-```
-
-## Usage
-
-> [!IMPORTANT]  
-> basicPlatform and clientContext must be used inside a test because it's setup before each test.
-
-- `basicPlatform`: a concrete but basic implementation of [Platform](https://github.com/launchdarkly/js-core/blob/main/packages/shared/common/src/api/platform/Platform.ts). This is setup beforeEach so it must be used inside a test.
-
-- `clientContext`: ClientContext object including `basicPlatform` above. This is setup beforeEach so it must be used inside a test as well.
-
-- `hasher`: a Hasher object returned by `Crypto.createHash`. All functions in this object are jest mocks. This is exported
-  separately as a top level export because `Crypto` does not expose this publicly and we want to respect that.
-
-## Example
-
-```tsx
-import { basicPlatform, clientContext, hasher } from '@launchdarkly/private-js-mocks';
-
-// DOES NOT WORK: crypto is undefined because basicPlatform must be inside a test
-// because it's setup by the package in beforeEach.
-const { crypto } = basicPlatform; // DON'T DO THIS HERE
-
-// DOES NOT WORK: clientContext must be used inside a test. Otherwise all properties
-// of it will be undefined.
-const {
-  basicConfiguration: { serviceEndpoints, tags },
-  platform: { info },
-} = clientContext; // DON'T DO THIS HERE
-
-describe('button', () => {
-  // DOES NOT WORK: again must be inside an actual test. At the test suite,
-  // level, beforeEach has not been run.
-  const { crypto } = basicPlatform; // DON'T DO THIS HERE
-
-  // DO THIS
-  let crypto: Crypto;
-  let info: Info;
-  let serviceEndpoints: ServiceEndpoints;
-  let tags: ApplicationTags;
-
-  beforeEach(() => {
-    // WORKS: basicPlatform and clientContext have been setup by the package.
-    ({ crypto, info } = basicPlatform);
-
-    // WORKS
-    ({
-      basicConfiguration: { serviceEndpoints, tags },
-      platform: { info },
-    } = clientContext);
-  });
-
-  afterEach(() => {
-    jest.resetAllMocks();
-  });
-
-  it('hashes the correct string', () => {
-    // arrange
-    const bucketer = new Bucketer(crypto);
-
-    // act
-    const [bucket, hadContext] = bucketer.bucket();
-
-    // assert
-    // WORKS
-    expect(crypto.createHash).toHaveBeenCalled();
-
-    // WORKS: alternatively you can just use the full path to access the properties
-    // of basicPlatform
-    expect(basicPlatform.crypto.createHash).toHaveBeenCalled();
-
-    // GOTCHA: hasher is a separte import from crypto to respect
-    // the public Crypto interface.
-    expect(hasher.update).toHaveBeenCalledWith(expected);
-    expect(hasher.digest).toHaveBeenCalledWith('hex');
-  });
-});
-```
-
-## Developing this package
-
-If you make changes to this package, you'll need to run `yarn build` in the `mocks` directory for changes to take effect.
-
-## Contributing
-
-See [Contributing](../shared/CONTRIBUTING.md).
-
-## About LaunchDarkly
-
-- LaunchDarkly is a continuous delivery platform that provides feature flags as a service and allows developers to iterate quickly and safely. We allow you to easily flag your features and manage them from the LaunchDarkly dashboard. With LaunchDarkly, you can:
-  - Roll out a new feature to a subset of your users (like a group of users who opt-in to a beta tester group), gathering feedback and bug reports from real-world use cases.
-  - Gradually roll out a feature to an increasing percentage of users, and track the effect that the feature has on key metrics (for instance, how likely is a user to complete a purchase if they have feature A versus feature B?).
-  - Turn off a feature that you realize is causing performance problems in production, without needing to re-deploy, or even restart the application with a changed configuration file.
-  - Grant access to certain features based on user attributes, like payment plan (eg: users on the ‘gold’ plan get access to more features than users in the ‘silver’ plan).
-  - Disable parts of your application to facilitate maintenance, without taking everything offline.
-- LaunchDarkly provides feature flag SDKs for a wide variety of languages and technologies. Check out [our documentation](https://docs.launchdarkly.com/sdk) for a complete list.
-- Explore LaunchDarkly
-  - [launchdarkly.com](https://www.launchdarkly.com/ 'LaunchDarkly Main Website') for more information
-  - [docs.launchdarkly.com](https://docs.launchdarkly.com/ 'LaunchDarkly Documentation') for our documentation and SDK reference guides
-  - [apidocs.launchdarkly.com](https://apidocs.launchdarkly.com/ 'LaunchDarkly API Documentation') for our API documentation
-  - [blog.launchdarkly.com](https://blog.launchdarkly.com/ 'LaunchDarkly Blog Documentation') for the latest product updates
-
-[mocks-ci-badge]: https://github.com/launchdarkly/js-core/actions/workflows/mocks.yml/badge.svg
-[mocks-ci]: https://github.com/launchdarkly/js-core/actions/workflows/mocks.yml
diff --git a/packages/shared/mocks/jest.config.js b/packages/shared/mocks/jest.config.js
deleted file mode 100644
index 6753062cc..000000000
--- a/packages/shared/mocks/jest.config.js
+++ /dev/null
@@ -1,7 +0,0 @@
-module.exports = {
-  transform: { '^.+\\.ts?$': 'ts-jest' },
-  testMatch: ['**/*.test.ts?(x)'],
-  testEnvironment: 'node',
-  moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'node'],
-  collectCoverageFrom: ['src/**/*.ts'],
-};
diff --git a/packages/shared/mocks/package.json b/packages/shared/mocks/package.json
deleted file mode 100644
index 4ffdc0ba9..000000000
--- a/packages/shared/mocks/package.json
+++ /dev/null
@@ -1,55 +0,0 @@
-{
-  "name": "@launchdarkly/private-js-mocks",
-  "private": true,
-  "version": "0.0.1",
-  "type": "commonjs",
-  "main": "./dist/index.js",
-  "types": "./dist/index.d.ts",
-  "exports": {
-    ".": "./dist/index.js"
-  },
-  "homepage": "https://github.com/launchdarkly/js-core/tree/main/packages/shared/common",
-  "repository": {
-    "type": "git",
-    "url": "https://github.com/launchdarkly/js-core.git"
-  },
-  "description": "LaunchDarkly SDK for JavaScript - mocks",
-  "files": [
-    "dist"
-  ],
-  "keywords": [
-    "mocks",
-    "unit",
-    "tests",
-    "launchdarkly",
-    "js",
-    "client"
-  ],
-  "scripts": {
-    "test": "",
-    "build-types": "yarn workspace @launchdarkly/js-sdk-common build-types",
-    "build": "yarn build-types && npx tsc",
-    "clean": "npx tsc --build --clean",
-    "lint": "npx eslint  --ext .ts",
-    "lint:fix": "yarn run lint -- --fix"
-  },
-  "license": "Apache-2.0",
-  "devDependencies": {
-    "@trivago/prettier-plugin-sort-imports": "^4.2.0",
-    "@types/jest": "^29.5.5",
-    "@typescript-eslint/eslint-plugin": "^6.20.0",
-    "@typescript-eslint/parser": "^6.20.0",
-    "eslint": "^8.50.0",
-    "eslint-config-airbnb-base": "^15.0.0",
-    "eslint-config-airbnb-typescript": "^17.1.0",
-    "eslint-config-prettier": "^9.0.0",
-    "eslint-plugin-import": "^2.28.1",
-    "eslint-plugin-jest": "^27.6.3",
-    "eslint-plugin-prettier": "^5.0.0",
-    "jest": "^29.7.0",
-    "launchdarkly-js-test-helpers": "^2.2.0",
-    "prettier": "^3.0.3",
-    "ts-jest": "^29.0.5",
-    "typescript": "^5.2.2"
-  }
-}
diff --git a/packages/shared/mocks/src/index.ts b/packages/shared/mocks/src/index.ts
deleted file mode 100644
index 0fffd6117..000000000
--- a/packages/shared/mocks/src/index.ts
+++ /dev/null
@@ -1,15 +0,0 @@
-import ContextDeduplicator from './contextDeduplicator';
-import { MockEventProcessor, setupMockEventProcessor } from './eventProcessor';
-import { createLogger } from './logger';
-import { createBasicPlatform } from './platform';
-import { MockStreamingProcessor, setupMockStreamingProcessor } from './streamingProcessor';
-
-export {
-  createLogger,
-  ContextDeduplicator,
-  MockEventProcessor,
-  setupMockEventProcessor,
-  MockStreamingProcessor,
-  setupMockStreamingProcessor,
-  createBasicPlatform,
-};
diff --git a/packages/shared/mocks/src/logger.ts b/packages/shared/mocks/src/logger.ts
deleted file mode 100644
index 80cb3e728..000000000
--- a/packages/shared/mocks/src/logger.ts
+++ /dev/null
@@ -1,6 +0,0 @@
-export const createLogger = () => ({
-  error: jest.fn(),
-  warn: jest.fn(),
-  info: jest.fn(),
-  debug: jest.fn(),
-});
diff --git a/packages/shared/mocks/tsconfig.eslint.json b/packages/shared/mocks/tsconfig.eslint.json
deleted file mode 100644
index 56c9b3830..000000000
--- a/packages/shared/mocks/tsconfig.eslint.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-  "extends": "./tsconfig.json",
-  "include": ["/**/*.ts"],
-  "exclude": ["node_modules"]
-}
diff --git a/packages/shared/mocks/tsconfig.json b/packages/shared/mocks/tsconfig.json
deleted file mode 100644
index 93b5f38e5..000000000
--- a/packages/shared/mocks/tsconfig.json
+++ /dev/null
@@ -1,26 +0,0 @@
-{
-  "compilerOptions": {
-    "rootDir": "src",
-    "outDir": "dist",
-    "target": "ES2017",
-    "lib": ["es6"],
-    "module": "commonjs",
-    "strict": true,
-    "noImplicitOverride": true,
-    // Needed for CommonJS modules: markdown-it, fs-extra
-    "allowSyntheticDefaultImports": true,
-    "sourceMap": true,
-    "declaration": true,
-    "declarationMap": true, // enables importers to jump to source
-    "stripInternal": true,
-    "paths": {
-      "@common": ["../common"]
-    }
-  },
-  "exclude": ["**/*.test.ts", "dist", "node_modules", "__tests__"],
-  "references": [
-    {
-      "path": "../common"
-    }
-  ]
-}
diff --git a/packages/shared/mocks/tsconfig.ref.json b/packages/shared/mocks/tsconfig.ref.json
deleted file mode 100644
index 0c86b2c55..000000000
--- a/packages/shared/mocks/tsconfig.ref.json
+++ /dev/null
@@ -1,7 +0,0 @@
-{
-  "extends": "./tsconfig.json",
-  "include": ["src/**/*"],
-  "compilerOptions": {
-    "composite": true
-  }
-}
diff --git a/packages/shared/sdk-client/__tests__/LDClientImpl.events.test.ts b/packages/shared/sdk-client/__tests__/LDClientImpl.events.test.ts
index 3b6c6a084..ca7b006e0 100644
--- a/packages/shared/sdk-client/__tests__/LDClientImpl.events.test.ts
+++ b/packages/shared/sdk-client/__tests__/LDClientImpl.events.test.ts
@@ -4,17 +4,15 @@ import {
   clone,
   internal,
   LDContext,
+  LDLogger,
   subsystem,
 } from '@launchdarkly/js-sdk-common';
-import {
-  createBasicPlatform,
-  createLogger,
-  MockEventProcessor,
-} from '@launchdarkly/private-js-mocks';
 
 import LDClientImpl from '../src/LDClientImpl';
 import { Flags } from '../src/types';
+import { createBasicPlatform } from './createBasicPlatform';
 import * as mockResponseJson from './evaluation/mockResponse.json';
+import { MockEventProcessor } from './eventProcessor';
 import { MockEventSource } from './streaming/LDClientImpl.mocks';
 import { makeTestDataManagerFactory } from './TestDataManager';
 
@@ -22,16 +20,21 @@ type InputCustomEvent = internal.InputCustomEvent;
 type InputIdentifyEvent = internal.InputIdentifyEvent;
 
 let mockPlatform: ReturnType<typeof createBasicPlatform>;
-let logger: ReturnType<typeof createLogger>;
+let logger: LDLogger;
 
 beforeEach(() => {
   mockPlatform = createBasicPlatform();
-  logger = createLogger();
+  logger = {
+    error: jest.fn(),
+    warn: jest.fn(),
+    info: jest.fn(),
+    debug: jest.fn(),
+  };
 });
 
 jest.mock('@launchdarkly/js-sdk-common', () => {
   const actual = jest.requireActual('@launchdarkly/js-sdk-common');
-  const m = jest.requireActual('@launchdarkly/private-js-mocks');
+  const m = jest.requireActual('./eventProcessor');
   return {
     ...actual,
     ...{
diff --git a/packages/shared/sdk-client/__tests__/LDClientImpl.storage.test.ts b/packages/shared/sdk-client/__tests__/LDClientImpl.storage.test.ts
index 863dcb5c0..4fe6fe50f 100644
--- a/packages/shared/sdk-client/__tests__/LDClientImpl.storage.test.ts
+++ b/packages/shared/sdk-client/__tests__/LDClientImpl.storage.test.ts
@@ -1,20 +1,25 @@
-import { AutoEnvAttributes, clone, type LDContext } from '@launchdarkly/js-sdk-common';
-import { createBasicPlatform, createLogger } from '@launchdarkly/private-js-mocks';
+import { AutoEnvAttributes, clone, type LDContext, LDLogger } from '@launchdarkly/js-sdk-common';
 
 import { toMulti } from '../src/context/addAutoEnv';
 import LDClientImpl from '../src/LDClientImpl';
 import LDEmitter from '../src/LDEmitter';
 import { Flags, PatchFlag } from '../src/types';
+import { createBasicPlatform } from './createBasicPlatform';
 import * as mockResponseJson from './evaluation/mockResponse.json';
 import { MockEventSource } from './streaming/LDClientImpl.mocks';
 import { makeTestDataManagerFactory } from './TestDataManager';
 
 let mockPlatform: ReturnType<typeof createBasicPlatform>;
-let logger: ReturnType<typeof createLogger>;
+let logger: LDLogger;
 
 beforeEach(() => {
   mockPlatform = createBasicPlatform();
-  logger = createLogger();
+  logger = {
+    error: jest.fn(),
+    warn: jest.fn(),
+    info: jest.fn(),
+    debug: jest.fn(),
+  };
 });
 
 const testSdkKey = 'test-sdk-key';
diff --git a/packages/shared/sdk-client/__tests__/LDClientImpl.test.ts b/packages/shared/sdk-client/__tests__/LDClientImpl.test.ts
index 44b169e36..f6308e9cb 100644
--- a/packages/shared/sdk-client/__tests__/LDClientImpl.test.ts
+++ b/packages/shared/sdk-client/__tests__/LDClientImpl.test.ts
@@ -1,9 +1,9 @@
-import { AutoEnvAttributes, clone, Hasher, LDContext } from '@launchdarkly/js-sdk-common';
-import { createBasicPlatform, createLogger } from '@launchdarkly/private-js-mocks';
+import { AutoEnvAttributes, clone, Hasher, LDContext, LDLogger } from '@launchdarkly/js-sdk-common';
 
 import { DataSourceState } from '../src/datasource/DataSourceStatus';
 import LDClientImpl from '../src/LDClientImpl';
 import { Flags } from '../src/types';
+import { createBasicPlatform } from './createBasicPlatform';
 import * as mockResponseJson from './evaluation/mockResponse.json';
 import { MockEventSource } from './streaming/LDClientImpl.mocks';
 import { makeTestDataManagerFactory } from './TestDataManager';
@@ -32,7 +32,7 @@ describe('sdk-client object', () => {
   let simulatedEvents: { data?: any }[] = [];
   let defaultPutResponse: Flags;
   let mockPlatform: ReturnType<typeof createBasicPlatform>;
-  let logger: ReturnType<typeof createLogger>;
+  let logger: LDLogger;
 
   function onDataSourceChangePromise(numToAwait: number) {
     let countdown = numToAwait;
@@ -49,7 +49,12 @@ describe('sdk-client object', () => {
 
   beforeEach(() => {
     mockPlatform = createBasicPlatform();
-    logger = createLogger();
+    logger = {
+      error: jest.fn(),
+      warn: jest.fn(),
+      info: jest.fn(),
+      debug: jest.fn(),
+    };
     defaultPutResponse = clone<Flags>(mockResponseJson);
     mockPlatform.crypto.randomUUID.mockReturnValue('random1');
     const hasher = {
diff --git a/packages/shared/sdk-client/__tests__/LDClientImpl.timeout.test.ts b/packages/shared/sdk-client/__tests__/LDClientImpl.timeout.test.ts
index fd2bc60f5..51a1503e7 100644
--- a/packages/shared/sdk-client/__tests__/LDClientImpl.timeout.test.ts
+++ b/packages/shared/sdk-client/__tests__/LDClientImpl.timeout.test.ts
@@ -1,19 +1,24 @@
-import { AutoEnvAttributes, clone, LDContext } from '@launchdarkly/js-sdk-common';
-import { createBasicPlatform, createLogger } from '@launchdarkly/private-js-mocks';
+import { AutoEnvAttributes, clone, LDContext, LDLogger } from '@launchdarkly/js-sdk-common';
 
 import { toMulti } from '../src/context/addAutoEnv';
 import LDClientImpl from '../src/LDClientImpl';
 import { Flags } from '../src/types';
+import { createBasicPlatform } from './createBasicPlatform';
 import * as mockResponseJson from './evaluation/mockResponse.json';
 import { MockEventSource } from './streaming/LDClientImpl.mocks';
 import { makeTestDataManagerFactory } from './TestDataManager';
 
 let mockPlatform: ReturnType<typeof createBasicPlatform>;
-let logger: ReturnType<typeof createLogger>;
+let logger: LDLogger;
 
 beforeEach(() => {
   mockPlatform = createBasicPlatform();
-  logger = createLogger();
+  logger = {
+    error: jest.fn(),
+    warn: jest.fn(),
+    info: jest.fn(),
+    debug: jest.fn(),
+  };
 });
 
 const testSdkKey = 'test-sdk-key';
diff --git a/packages/shared/sdk-client/__tests__/LDClientImpl.variation.test.ts b/packages/shared/sdk-client/__tests__/LDClientImpl.variation.test.ts
index c360e33bd..257d1a10a 100644
--- a/packages/shared/sdk-client/__tests__/LDClientImpl.variation.test.ts
+++ b/packages/shared/sdk-client/__tests__/LDClientImpl.variation.test.ts
@@ -1,18 +1,29 @@
-import { AutoEnvAttributes, clone, Context, LDContext } from '@launchdarkly/js-sdk-common';
-import { createBasicPlatform, createLogger } from '@launchdarkly/private-js-mocks';
+import {
+  AutoEnvAttributes,
+  clone,
+  Context,
+  LDContext,
+  LDLogger,
+} from '@launchdarkly/js-sdk-common';
 
 import LDClientImpl from '../src/LDClientImpl';
 import { Flags } from '../src/types';
+import { createBasicPlatform } from './createBasicPlatform';
 import * as mockResponseJson from './evaluation/mockResponse.json';
 import { MockEventSource } from './streaming/LDClientImpl.mocks';
 import { makeTestDataManagerFactory } from './TestDataManager';
 
 let mockPlatform: ReturnType<typeof createBasicPlatform>;
-let logger: ReturnType<typeof createLogger>;
+let logger: LDLogger;
 
 beforeEach(() => {
   mockPlatform = createBasicPlatform();
-  logger = createLogger();
+  logger = {
+    error: jest.fn(),
+    warn: jest.fn(),
+    info: jest.fn(),
+    debug: jest.fn(),
+  };
 });
 
 const testSdkKey = 'test-sdk-key';
diff --git a/packages/shared/sdk-client/__tests__/context/addAutoEnv.test.ts b/packages/shared/sdk-client/__tests__/context/addAutoEnv.test.ts
index b686a3c1b..cc0759d86 100644
--- a/packages/shared/sdk-client/__tests__/context/addAutoEnv.test.ts
+++ b/packages/shared/sdk-client/__tests__/context/addAutoEnv.test.ts
@@ -2,10 +2,10 @@ import {
   Crypto,
   Info,
   type LDContext,
+  LDLogger,
   LDMultiKindContext,
   LDUser,
 } from '@launchdarkly/js-sdk-common';
-import { createBasicPlatform, createLogger } from '@launchdarkly/private-js-mocks';
 
 import { Configuration, ConfigurationImpl } from '../../src/configuration';
 import {
@@ -14,13 +14,19 @@ import {
   addDeviceInfo,
   toMulti,
 } from '../../src/context/addAutoEnv';
+import { createBasicPlatform } from '../createBasicPlatform';
 
 let mockPlatform: ReturnType<typeof createBasicPlatform>;
-let logger: ReturnType<typeof createLogger>;
+let logger: LDLogger;
 
 beforeEach(() => {
   mockPlatform = createBasicPlatform();
-  logger = createLogger();
+  logger = {
+    error: jest.fn(),
+    warn: jest.fn(),
+    info: jest.fn(),
+    debug: jest.fn(),
+  };
 });
 
 describe('automatic environment attributes', () => {
diff --git a/packages/shared/sdk-client/__tests__/context/ensureKey.test.ts b/packages/shared/sdk-client/__tests__/context/ensureKey.test.ts
index 2faf60177..60efb0e0a 100644
--- a/packages/shared/sdk-client/__tests__/context/ensureKey.test.ts
+++ b/packages/shared/sdk-client/__tests__/context/ensureKey.test.ts
@@ -5,9 +5,9 @@ import type {
   LDMultiKindContext,
   LDUser,
 } from '@launchdarkly/js-sdk-common';
-import { createBasicPlatform } from '@launchdarkly/private-js-mocks';
 
 import { ensureKey } from '../../src/context/ensureKey';
+import { createBasicPlatform } from '../createBasicPlatform';
 
 let mockPlatform: ReturnType<typeof createBasicPlatform>;
 
diff --git a/packages/shared/sdk-client/__tests__/createBasicPlatform.ts b/packages/shared/sdk-client/__tests__/createBasicPlatform.ts
new file mode 100644
index 000000000..17178f061
--- /dev/null
+++ b/packages/shared/sdk-client/__tests__/createBasicPlatform.ts
@@ -0,0 +1,59 @@
+import { PlatformData, SdkData } from '@launchdarkly/js-sdk-common';
+
+import { setupCrypto } from './setupCrypto';
+
+const setupInfo = () => ({
+  platformData: jest.fn(
+    (): PlatformData => ({
+      os: {
+        name: 'An OS',
+        version: '1.0.1',
+        arch: 'An Arch',
+      },
+      name: 'The SDK Name',
+      additional: {
+        nodeVersion: '42',
+      },
+      ld_application: {
+        key: '',
+        envAttributesVersion: '1.0',
+        id: 'com.testapp.ld',
+        name: 'LDApplication.TestApp',
+        version: '1.1.1',
+      },
+      ld_device: {
+        key: '',
+        envAttributesVersion: '1.0',
+        os: { name: 'Another OS', version: '99', family: 'orange' },
+        manufacturer: 'coconut',
+      },
+    }),
+  ),
+  sdkData: jest.fn(
+    (): SdkData => ({
+      name: 'An SDK',
+      version: '2.0.2',
+      userAgentBase: 'TestUserAgent',
+      wrapperName: 'Rapper',
+      wrapperVersion: '1.2.3',
+    }),
+  ),
+});
+
+export const createBasicPlatform = () => ({
+  encoding: {
+    btoa: (s: string) => Buffer.from(s).toString('base64'),
+  },
+  info: setupInfo(),
+  crypto: setupCrypto(),
+  requests: {
+    fetch: jest.fn(),
+    createEventSource: jest.fn(),
+    getEventSourceCapabilities: jest.fn(),
+  },
+  storage: {
+    get: jest.fn(),
+    set: jest.fn(),
+    clear: jest.fn(),
+  },
+});
diff --git a/packages/shared/mocks/src/eventProcessor.ts b/packages/shared/sdk-client/__tests__/eventProcessor.ts
similarity index 85%
rename from packages/shared/mocks/src/eventProcessor.ts
rename to packages/shared/sdk-client/__tests__/eventProcessor.ts
index ffa577e16..30fa70802 100644
--- a/packages/shared/mocks/src/eventProcessor.ts
+++ b/packages/shared/sdk-client/__tests__/eventProcessor.ts
@@ -1,4 +1,4 @@
-import type { ClientContext, internal, subsystem } from '@common';
+import { ClientContext, internal, subsystem } from '@launchdarkly/js-sdk-common';
 
 export const MockEventProcessor = jest.fn();
 
diff --git a/packages/shared/sdk-client/__tests__/setupCrypto.ts b/packages/shared/sdk-client/__tests__/setupCrypto.ts
new file mode 100644
index 000000000..fc8d0b460
--- /dev/null
+++ b/packages/shared/sdk-client/__tests__/setupCrypto.ts
@@ -0,0 +1,20 @@
+import { Hasher } from '@launchdarkly/js-sdk-common';
+
+export const setupCrypto = () => {
+  let counter = 0;
+  const hasher = {
+    update: jest.fn((): Hasher => hasher),
+    digest: jest.fn(() => '1234567890123456'),
+  };
+
+  return {
+    createHash: jest.fn(() => hasher),
+    createHmac: jest.fn(),
+    randomUUID: jest.fn(() => {
+      counter += 1;
+      // Will provide a unique value for tests.
+      // Very much not a UUID of course.
+      return `${counter}`;
+    }),
+  };
+};
diff --git a/packages/shared/sdk-client/__tests__/storage/getOrGenerateKey.test.ts b/packages/shared/sdk-client/__tests__/storage/getOrGenerateKey.test.ts
index 8065871ff..589f4e585 100644
--- a/packages/shared/sdk-client/__tests__/storage/getOrGenerateKey.test.ts
+++ b/packages/shared/sdk-client/__tests__/storage/getOrGenerateKey.test.ts
@@ -1,7 +1,7 @@
 import { Crypto, Storage } from '@launchdarkly/js-sdk-common';
-import { createBasicPlatform } from '@launchdarkly/private-js-mocks';
 
 import { getOrGenerateKey } from '../../src/storage/getOrGenerateKey';
+import { createBasicPlatform } from '../createBasicPlatform';
 
 let mockPlatform: ReturnType<typeof createBasicPlatform>;
 
diff --git a/packages/shared/sdk-client/__tests__/streaming/StreamingProcessor.test.ts b/packages/shared/sdk-client/__tests__/streaming/StreamingProcessor.test.ts
index 3ace5342b..f1d4eda76 100644
--- a/packages/shared/sdk-client/__tests__/streaming/StreamingProcessor.test.ts
+++ b/packages/shared/sdk-client/__tests__/streaming/StreamingProcessor.test.ts
@@ -5,15 +5,16 @@ import {
   EventName,
   Info,
   internal,
+  LDLogger,
   LDStreamingError,
   Platform,
   ProcessStreamResponse,
 } from '@launchdarkly/js-sdk-common';
-import { createBasicPlatform, createLogger } from '@launchdarkly/private-js-mocks';
 
 import { StreamingDataSourceConfig, StreamingProcessor } from '../../src/streaming';
+import { createBasicPlatform } from '../createBasicPlatform';
 
-let logger: ReturnType<typeof createLogger>;
+let logger: LDLogger;
 
 const serviceEndpoints = {
   events: '',
@@ -69,7 +70,12 @@ function getStreamingDataSourceConfig(
 
 beforeEach(() => {
   basicPlatform = createBasicPlatform();
-  logger = createLogger();
+  logger = {
+    error: jest.fn(),
+    warn: jest.fn(),
+    info: jest.fn(),
+    debug: jest.fn(),
+  };
 });
 
 const createMockEventSource = (streamUri: string = '', options: any = {}) => ({
diff --git a/packages/shared/sdk-client/package.json b/packages/shared/sdk-client/package.json
index 9d79dc224..c651eda60 100644
--- a/packages/shared/sdk-client/package.json
+++ b/packages/shared/sdk-client/package.json
@@ -33,7 +33,6 @@
     "@launchdarkly/js-sdk-common": "2.9.0"
   },
   "devDependencies": {
-    "@launchdarkly/private-js-mocks": "0.0.1",
     "@testing-library/dom": "^9.3.1",
     "@testing-library/jest-dom": "^5.16.5",
     "@types/jest": "^29.5.3",
diff --git a/packages/shared/sdk-client/rollup.config.js b/packages/shared/sdk-client/rollup.config.js
new file mode 100644
index 000000000..d8fb93ed9
--- /dev/null
+++ b/packages/shared/sdk-client/rollup.config.js
@@ -0,0 +1,43 @@
+import common from '@rollup/plugin-commonjs';
+import json from '@rollup/plugin-json';
+import resolve from '@rollup/plugin-node-resolve';
+import terser from '@rollup/plugin-terser';
+import typescript from '@rollup/plugin-typescript';
+
+const getSharedConfig = (format, file) => ({
+  input: 'src/index.ts',
+  output: [
+    {
+      format: format,
+      sourcemap: true,
+      file: file,
+    },
+  ],
+  onwarn: (warning) => {
+    if (warning.code !== 'CIRCULAR_DEPENDENCY') {
+      console.error(`(!) ${warning.message}`);
+    }
+  },
+});
+
+export default [
+  {
+    ...getSharedConfig('es', 'dist/index.es.js'),
+    plugins: [
+      typescript({
+        module: 'esnext',
+      }),
+      common({
+        transformMixedEsModules: true,
+        esmExternals: true,
+      }),
+      resolve(),
+      terser(),
+      json(),
+    ],
+  },
+  {
+    ...getSharedConfig('cjs', 'dist/index.cjs.js'),
+    plugins: [typescript(), common(), resolve(), terser(), json()],
+  },
+];
diff --git a/packages/shared/sdk-server-edge/__tests__/api/LDClient.test.ts b/packages/shared/sdk-server-edge/__tests__/api/LDClient.test.ts
index 617375778..26bad83fa 100644
--- a/packages/shared/sdk-server-edge/__tests__/api/LDClient.test.ts
+++ b/packages/shared/sdk-server-edge/__tests__/api/LDClient.test.ts
@@ -1,7 +1,7 @@
 import { internal } from '@launchdarkly/js-server-sdk-common';
-import { createBasicPlatform } from '@launchdarkly/private-js-mocks';
 
 import LDClient from '../../src/api/LDClient';
+import { createBasicPlatform } from '../createBasicPlatform';
 
 jest.mock('@launchdarkly/js-sdk-common', () => {
   const actual = jest.requireActual('@launchdarkly/js-sdk-common');
diff --git a/packages/shared/sdk-server-edge/__tests__/api/createCallbacks.test.ts b/packages/shared/sdk-server-edge/__tests__/api/createCallbacks.test.ts
index 957542a6c..665f3f19b 100644
--- a/packages/shared/sdk-server-edge/__tests__/api/createCallbacks.test.ts
+++ b/packages/shared/sdk-server-edge/__tests__/api/createCallbacks.test.ts
@@ -1,16 +1,19 @@
 import { EventEmitter } from 'node:events';
 
-import { noop } from '@launchdarkly/js-server-sdk-common';
-import { createLogger } from '@launchdarkly/private-js-mocks';
+import { LDLogger, noop } from '@launchdarkly/js-server-sdk-common';
 
 import createCallbacks from '../../src/api/createCallbacks';
 
-let logger: ReturnType<typeof createLogger>;
+let logger: LDLogger;
 
 beforeEach(() => {
-  logger = createLogger();
+  logger = {
+    error: jest.fn(),
+    warn: jest.fn(),
+    info: jest.fn(),
+    debug: jest.fn(),
+  };
 });
-
 describe('createCallbacks', () => {
   let emitter: EventEmitter;
   const err = new Error('test error');
diff --git a/packages/shared/sdk-server-edge/__tests__/createBasicPlatform.ts b/packages/shared/sdk-server-edge/__tests__/createBasicPlatform.ts
new file mode 100644
index 000000000..e5139ccec
--- /dev/null
+++ b/packages/shared/sdk-server-edge/__tests__/createBasicPlatform.ts
@@ -0,0 +1,59 @@
+import { PlatformData, SdkData } from '@launchdarkly/js-server-sdk-common';
+
+import { setupCrypto } from './setupCrypto';
+
+const setupInfo = () => ({
+  platformData: jest.fn(
+    (): PlatformData => ({
+      os: {
+        name: 'An OS',
+        version: '1.0.1',
+        arch: 'An Arch',
+      },
+      name: 'The SDK Name',
+      additional: {
+        nodeVersion: '42',
+      },
+      ld_application: {
+        key: '',
+        envAttributesVersion: '1.0',
+        id: 'com.testapp.ld',
+        name: 'LDApplication.TestApp',
+        version: '1.1.1',
+      },
+      ld_device: {
+        key: '',
+        envAttributesVersion: '1.0',
+        os: { name: 'Another OS', version: '99', family: 'orange' },
+        manufacturer: 'coconut',
+      },
+    }),
+  ),
+  sdkData: jest.fn(
+    (): SdkData => ({
+      name: 'An SDK',
+      version: '2.0.2',
+      userAgentBase: 'TestUserAgent',
+      wrapperName: 'Rapper',
+      wrapperVersion: '1.2.3',
+    }),
+  ),
+});
+
+export const createBasicPlatform = () => ({
+  encoding: {
+    btoa: (s: string) => Buffer.from(s).toString('base64'),
+  },
+  info: setupInfo(),
+  crypto: setupCrypto(),
+  requests: {
+    fetch: jest.fn(),
+    createEventSource: jest.fn(),
+    getEventSourceCapabilities: jest.fn(),
+  },
+  storage: {
+    get: jest.fn(),
+    set: jest.fn(),
+    clear: jest.fn(),
+  },
+});
diff --git a/packages/shared/sdk-server-edge/__tests__/setupCrypto.ts b/packages/shared/sdk-server-edge/__tests__/setupCrypto.ts
new file mode 100644
index 000000000..bdf62024f
--- /dev/null
+++ b/packages/shared/sdk-server-edge/__tests__/setupCrypto.ts
@@ -0,0 +1,20 @@
+import { Hasher } from '@launchdarkly/js-server-sdk-common';
+
+export const setupCrypto = () => {
+  let counter = 0;
+  const hasher = {
+    update: jest.fn((): Hasher => hasher),
+    digest: jest.fn(() => '1234567890123456'),
+  };
+
+  return {
+    createHash: jest.fn(() => hasher),
+    createHmac: jest.fn(),
+    randomUUID: jest.fn(() => {
+      counter += 1;
+      // Will provide a unique value for tests.
+      // Very much not a UUID of course.
+      return `${counter}`;
+    }),
+  };
+};
diff --git a/packages/shared/sdk-server-edge/package.json b/packages/shared/sdk-server-edge/package.json
index 25fcb5538..5c4044f9c 100644
--- a/packages/shared/sdk-server-edge/package.json
+++ b/packages/shared/sdk-server-edge/package.json
@@ -40,7 +40,6 @@
     "crypto-js": "^4.1.1"
   },
   "devDependencies": {
-    "@launchdarkly/private-js-mocks": "0.0.1",
     "@trivago/prettier-plugin-sort-imports": "^4.1.1",
     "@types/crypto-js": "^4.1.1",
     "@types/jest": "^29.5.0",
diff --git a/packages/shared/sdk-server/__tests__/LDClient.allFlags.test.ts b/packages/shared/sdk-server/__tests__/LDClient.allFlags.test.ts
index 9903eb51d..585c6a9b5 100644
--- a/packages/shared/sdk-server/__tests__/LDClient.allFlags.test.ts
+++ b/packages/shared/sdk-server/__tests__/LDClient.allFlags.test.ts
@@ -1,7 +1,6 @@
-import { createBasicPlatform } from '@launchdarkly/private-js-mocks';
-
 import { LDClientImpl } from '../src';
 import TestData from '../src/integrations/test_data/TestData';
+import { createBasicPlatform } from './createBasicPlatform';
 import TestLogger, { LogLevel } from './Logger';
 import makeCallbacks from './makeCallbacks';
 
@@ -16,7 +15,7 @@ describe('given an LDClient with test data', () => {
     logger = new TestLogger();
     td = new TestData();
     client = new LDClientImpl(
-      'sdk-key',
+      'sdk-key-all-flags-test-data',
       createBasicPlatform(),
       {
         updateProcessor: td.getFactory(),
@@ -280,7 +279,7 @@ describe('given an offline client', () => {
     logger = new TestLogger();
     td = new TestData();
     client = new LDClientImpl(
-      'sdk-key',
+      'sdk-key-all-flags-offline',
       createBasicPlatform(),
       {
         offline: true,
diff --git a/packages/shared/sdk-server/__tests__/LDClient.evaluation.test.ts b/packages/shared/sdk-server/__tests__/LDClient.evaluation.test.ts
index 2ef0d660d..a57dc8599 100644
--- a/packages/shared/sdk-server/__tests__/LDClient.evaluation.test.ts
+++ b/packages/shared/sdk-server/__tests__/LDClient.evaluation.test.ts
@@ -1,31 +1,14 @@
 import { subsystem } from '@launchdarkly/js-sdk-common';
-import {
-  createBasicPlatform,
-  MockStreamingProcessor,
-  setupMockStreamingProcessor,
-} from '@launchdarkly/private-js-mocks';
 
 import { LDClientImpl, LDFeatureStore } from '../src';
 import TestData from '../src/integrations/test_data/TestData';
 import AsyncStoreFacade from '../src/store/AsyncStoreFacade';
 import InMemoryFeatureStore from '../src/store/InMemoryFeatureStore';
 import VersionedDataKinds from '../src/store/VersionedDataKinds';
+import { createBasicPlatform } from './createBasicPlatform';
 import TestLogger, { LogLevel } from './Logger';
 import makeCallbacks from './makeCallbacks';
 
-jest.mock('@launchdarkly/js-sdk-common', () => {
-  const actual = jest.requireActual('@launchdarkly/js-sdk-common');
-  return {
-    ...actual,
-    ...{
-      internal: {
-        ...actual.internal,
-        StreamingProcessor: MockStreamingProcessor,
-      },
-    },
-  };
-});
-
 const defaultUser = { key: 'user' };
 
 describe('given an LDClient with test data', () => {
@@ -35,7 +18,7 @@ describe('given an LDClient with test data', () => {
   beforeEach(async () => {
     td = new TestData();
     client = new LDClientImpl(
-      'sdk-key',
+      'sdk-key-evaluation-test-data',
       createBasicPlatform(),
       {
         updateProcessor: td.getFactory(),
@@ -281,7 +264,7 @@ describe('given an offline client', () => {
     logger = new TestLogger();
     td = new TestData();
     client = new LDClientImpl(
-      'sdk-key',
+      'sdk-key-evaluation-offline',
       createBasicPlatform(),
       {
         offline: true,
@@ -345,7 +328,7 @@ describe('given a client and store that are uninitialized', () => {
     });
 
     client = new LDClientImpl(
-      'sdk-key',
+      'sdk-key-evaluation-uninitialized-store',
       createBasicPlatform(),
       {
         updateProcessor: new InertUpdateProcessor(),
@@ -392,14 +375,18 @@ describe('given a client that is un-initialized and store that is initialized',
       },
       segments: {},
     });
-    setupMockStreamingProcessor(true);
 
     client = new LDClientImpl(
-      'sdk-key',
+      'sdk-key-initialized-store',
       createBasicPlatform(),
       {
         sendEvents: false,
         featureStore: store,
+        updateProcessor: () => ({
+          start: jest.fn(),
+          stop: jest.fn(),
+          close: jest.fn(),
+        }),
       },
       makeCallbacks(true),
     );
diff --git a/packages/shared/sdk-server/__tests__/LDClient.events.test.ts b/packages/shared/sdk-server/__tests__/LDClient.events.test.ts
index 075fb5802..5d1cdd84e 100644
--- a/packages/shared/sdk-server/__tests__/LDClient.events.test.ts
+++ b/packages/shared/sdk-server/__tests__/LDClient.events.test.ts
@@ -1,10 +1,10 @@
 import { AsyncQueue } from 'launchdarkly-js-test-helpers';
 
 import { Context, internal } from '@launchdarkly/js-sdk-common';
-import { createBasicPlatform } from '@launchdarkly/private-js-mocks';
 
 import { LDClientImpl } from '../src';
 import TestData from '../src/integrations/test_data/TestData';
+import { createBasicPlatform } from './createBasicPlatform';
 import TestLogger, { LogLevel } from './Logger';
 import makeCallbacks from './makeCallbacks';
 
@@ -29,7 +29,7 @@ describe('given a client with mock event processor', () => {
 
     td = new TestData();
     client = new LDClientImpl(
-      'sdk-key',
+      'sdk-key-events',
       createBasicPlatform(),
       {
         updateProcessor: td.getFactory(),
diff --git a/packages/shared/sdk-server/__tests__/LDClient.hooks.test.ts b/packages/shared/sdk-server/__tests__/LDClient.hooks.test.ts
index b108a71d2..929d8f67a 100644
--- a/packages/shared/sdk-server/__tests__/LDClient.hooks.test.ts
+++ b/packages/shared/sdk-server/__tests__/LDClient.hooks.test.ts
@@ -1,8 +1,7 @@
-import { createBasicPlatform } from '@launchdarkly/private-js-mocks';
-
 import { LDClientImpl, LDMigrationStage } from '../src';
 import Reasons from '../src/evaluation/Reasons';
 import TestData from '../src/integrations/test_data/TestData';
+import { createBasicPlatform } from './createBasicPlatform';
 import { TestHook } from './hooks/TestHook';
 import TestLogger from './Logger';
 import makeCallbacks from './makeCallbacks';
@@ -20,7 +19,7 @@ describe('given an LDClient with test data', () => {
     testHook = new TestHook();
     td = new TestData();
     client = new LDClientImpl(
-      'sdk-key',
+      'sdk-key-hooks-test-data',
       createBasicPlatform(),
       {
         updateProcessor: td.getFactory(),
@@ -351,7 +350,7 @@ it('can add a hook after initialization', async () => {
   const logger = new TestLogger();
   const td = new TestData();
   const client = new LDClientImpl(
-    'sdk-key',
+    'sdk-key-hook-after-init',
     createBasicPlatform(),
     {
       updateProcessor: td.getFactory(),
diff --git a/packages/shared/sdk-server/__tests__/LDClient.migrations.test.ts b/packages/shared/sdk-server/__tests__/LDClient.migrations.test.ts
index d494245a7..3a5df82a4 100644
--- a/packages/shared/sdk-server/__tests__/LDClient.migrations.test.ts
+++ b/packages/shared/sdk-server/__tests__/LDClient.migrations.test.ts
@@ -1,8 +1,7 @@
-import { createBasicPlatform } from '@launchdarkly/private-js-mocks';
-
 import { LDClientImpl, LDMigrationStage } from '../src';
 import TestData from '../src/integrations/test_data/TestData';
 import { LDClientCallbacks } from '../src/LDClientImpl';
+import { createBasicPlatform } from './createBasicPlatform';
 
 /**
  * Basic callback handler that records errors for tests.
@@ -33,7 +32,7 @@ describe('given an LDClient with test data', () => {
     td = new TestData();
     [errors, callbacks] = makeCallbacks();
     client = new LDClientImpl(
-      'sdk-key',
+      'sdk-key-migration',
       createBasicPlatform(),
       {
         updateProcessor: td.getFactory(),
diff --git a/packages/shared/sdk-server/__tests__/LDClientImpl.bigSegments.test.ts b/packages/shared/sdk-server/__tests__/LDClientImpl.bigSegments.test.ts
index 471121256..9015cc338 100644
--- a/packages/shared/sdk-server/__tests__/LDClientImpl.bigSegments.test.ts
+++ b/packages/shared/sdk-server/__tests__/LDClientImpl.bigSegments.test.ts
@@ -1,11 +1,11 @@
 import { Crypto, Hasher, Hmac } from '@launchdarkly/js-sdk-common';
-import { createBasicPlatform } from '@launchdarkly/private-js-mocks';
 
 import { LDBigSegmentsOptions } from '../src';
 import { BigSegmentStore } from '../src/api/interfaces';
 import makeBigSegmentRef from '../src/evaluation/makeBigSegmentRef';
 import TestData from '../src/integrations/test_data/TestData';
 import LDClientImpl from '../src/LDClientImpl';
+import { createBasicPlatform } from './createBasicPlatform';
 import { makeSegmentMatchClause } from './evaluation/flags';
 import makeCallbacks from './makeCallbacks';
 
@@ -75,7 +75,7 @@ describe('given test data with big segments', () => {
       };
 
       client = new LDClientImpl(
-        'sdk-key',
+        'sdk-key-big-segments-test-data',
         { ...createBasicPlatform(), crypto },
         {
           updateProcessor: td.getFactory(),
@@ -114,7 +114,7 @@ describe('given test data with big segments', () => {
       };
 
       client = new LDClientImpl(
-        'sdk-key',
+        'sdk-key-big-segments-with-user',
         { ...createBasicPlatform(), crypto },
         {
           updateProcessor: td.getFactory(),
@@ -153,7 +153,7 @@ describe('given test data with big segments', () => {
       };
 
       client = new LDClientImpl(
-        'sdk-key',
+        'sdk-key-big-segments-store-error',
         { ...createBasicPlatform(), crypto },
         {
           updateProcessor: td.getFactory(),
@@ -180,7 +180,7 @@ describe('given test data with big segments', () => {
   describe('given a client without big segment support.', () => {
     beforeEach(async () => {
       client = new LDClientImpl(
-        'sdk-key',
+        'sdk-key-big-segments-no-store',
         { ...createBasicPlatform(), crypto },
         {
           updateProcessor: td.getFactory(),
diff --git a/packages/shared/sdk-server/__tests__/LDClientImpl.listeners.test.ts b/packages/shared/sdk-server/__tests__/LDClientImpl.listeners.test.ts
index a97b7c083..d32ef6d24 100644
--- a/packages/shared/sdk-server/__tests__/LDClientImpl.listeners.test.ts
+++ b/packages/shared/sdk-server/__tests__/LDClientImpl.listeners.test.ts
@@ -1,10 +1,9 @@
 import { AsyncQueue } from 'launchdarkly-js-test-helpers';
 
-import { createBasicPlatform } from '@launchdarkly/private-js-mocks';
-
 import { AttributeReference, LDClientImpl } from '../src';
 import { Op } from '../src/evaluation/data/Clause';
 import TestData from '../src/integrations/test_data/TestData';
+import { createBasicPlatform } from './createBasicPlatform';
 import { makeFlagWithSegmentMatch } from './evaluation/flags';
 import TestLogger from './Logger';
 import makeCallbacks from './makeCallbacks';
@@ -18,7 +17,7 @@ describe('given an LDClient with test data', () => {
     queue = new AsyncQueue();
     td = new TestData();
     client = new LDClientImpl(
-      'sdk-key',
+      'sdk-key-listeners',
       createBasicPlatform(),
       {
         updateProcessor: td.getFactory(),
diff --git a/packages/shared/sdk-server/__tests__/LDClientImpl.test.ts b/packages/shared/sdk-server/__tests__/LDClientImpl.test.ts
index 4995ebc6b..34d97823d 100644
--- a/packages/shared/sdk-server/__tests__/LDClientImpl.test.ts
+++ b/packages/shared/sdk-server/__tests__/LDClientImpl.test.ts
@@ -1,24 +1,46 @@
-import {
-  createBasicPlatform,
-  MockStreamingProcessor,
-  setupMockStreamingProcessor,
-} from '@launchdarkly/private-js-mocks';
+import { LDClientContext, LDStreamingError } from '@launchdarkly/js-sdk-common';
 
-import { LDClientImpl, LDOptions } from '../src';
+import { LDOptions } from '../src/api/options/LDOptions';
+import { LDFeatureStore } from '../src/api/subsystems/LDFeatureStore';
+import LDClientImpl from '../src/LDClientImpl';
+import { createBasicPlatform } from './createBasicPlatform';
 import TestLogger, { LogLevel } from './Logger';
 
-jest.mock('@launchdarkly/js-sdk-common', () => {
-  const actual = jest.requireActual('@launchdarkly/js-sdk-common');
-  return {
-    ...actual,
-    ...{
-      internal: {
-        ...actual.internal,
-        StreamingProcessor: MockStreamingProcessor,
-      },
-    },
-  };
-});
+function getUpdateProcessorFactory(shouldError: boolean = false, initTimeoutMs: number = 0) {
+  let initTimeoutHandle: any;
+  let patchTimeoutHandle: any;
+  let deleteTimeoutHandle: any;
+
+  return (
+    _clientContext: LDClientContext,
+    featureStore: LDFeatureStore,
+    initSuccessHandler: Function,
+    errorHandler?: (e: Error) => void,
+  ) => ({
+    start: jest.fn(async () => {
+      if (shouldError) {
+        initTimeoutHandle = setTimeout(() => {
+          const unauthorized = new Error('test-error') as LDStreamingError;
+          // @ts-ignore
+          unauthorized.code = 401;
+          errorHandler?.(unauthorized);
+        }, 0);
+      } else {
+        // execute put which will resolve the identify promise
+        initTimeoutHandle = setTimeout(() => {
+          featureStore.init({}, () => {});
+          initSuccessHandler();
+        }, initTimeoutMs);
+      }
+    }),
+    close: jest.fn(() => {
+      clearTimeout(initTimeoutHandle);
+      clearTimeout(patchTimeoutHandle);
+      clearTimeout(deleteTimeoutHandle);
+    }),
+    eventSource: {},
+  });
+}
 
 describe('LDClientImpl', () => {
   let client: LDClientImpl;
@@ -30,11 +52,7 @@ describe('LDClientImpl', () => {
     hasEventListeners: jest.fn().mockName('hasEventListeners'),
   };
   const createClient = (options: LDOptions = {}) =>
-    new LDClientImpl('sdk-key', createBasicPlatform(), options, callbacks);
-
-  beforeEach(() => {
-    setupMockStreamingProcessor();
-  });
+    new LDClientImpl('sdk-key-ldclientimpl.test', createBasicPlatform(), options, callbacks);
 
   afterEach(() => {
     client.close();
@@ -42,7 +60,7 @@ describe('LDClientImpl', () => {
   });
 
   it('fires ready event in online mode', async () => {
-    client = createClient();
+    client = createClient({ updateProcessor: getUpdateProcessorFactory() });
     const initializedClient = await client.waitForInitialization({ timeout: 10 });
 
     expect(initializedClient).toEqual(client);
@@ -53,8 +71,7 @@ describe('LDClientImpl', () => {
   });
 
   it('wait for initialization completes even if initialization completes before it is called', (done) => {
-    setupMockStreamingProcessor();
-    client = createClient();
+    client = createClient({ updateProcessor: getUpdateProcessorFactory() });
 
     setTimeout(async () => {
       const initializedClient = await client.waitForInitialization({ timeout: 10 });
@@ -64,7 +81,7 @@ describe('LDClientImpl', () => {
   });
 
   it('waiting for initialization the second time produces the same result', async () => {
-    client = createClient();
+    client = createClient({ updateProcessor: getUpdateProcessorFactory() });
     await client.waitForInitialization({ timeout: 10 });
 
     const initializedClient = await client.waitForInitialization({ timeout: 10 });
@@ -83,9 +100,7 @@ describe('LDClientImpl', () => {
   });
 
   it('initialization fails: failed event fires and initialization promise rejects', async () => {
-    setupMockStreamingProcessor(true);
-    client = createClient();
-
+    client = createClient({ updateProcessor: getUpdateProcessorFactory(true) });
     await expect(client.waitForInitialization({ timeout: 10 })).rejects.toThrow('failed');
 
     expect(client.initialized()).toBeFalsy();
@@ -95,8 +110,7 @@ describe('LDClientImpl', () => {
   });
 
   it('initialization promise is rejected even if the failure happens before wait is called', (done) => {
-    setupMockStreamingProcessor(true);
-    client = createClient();
+    client = createClient({ updateProcessor: getUpdateProcessorFactory(true) });
 
     setTimeout(async () => {
       await expect(client.waitForInitialization({ timeout: 10 })).rejects.toThrow('failed');
@@ -110,8 +124,7 @@ describe('LDClientImpl', () => {
   });
 
   it('waiting a second time results in the same rejection', async () => {
-    setupMockStreamingProcessor(true);
-    client = createClient();
+    client = createClient({ updateProcessor: getUpdateProcessorFactory(true) });
 
     await expect(client.waitForInitialization({ timeout: 10 })).rejects.toThrow('failed');
     await expect(client.waitForInitialization({ timeout: 10 })).rejects.toThrow('failed');
@@ -128,13 +141,13 @@ describe('LDClientImpl', () => {
   });
 
   it('resolves immediately if the client is already ready', async () => {
-    client = createClient();
+    client = createClient({ updateProcessor: getUpdateProcessorFactory() });
     await client.waitForInitialization({ timeout: 10 });
     await client.waitForInitialization({ timeout: 10 });
   });
 
   it('creates only one Promise when waiting for initialization - when not using a timeout', async () => {
-    client = createClient();
+    client = createClient({ updateProcessor: getUpdateProcessorFactory() });
     const p1 = client.waitForInitialization();
     const p2 = client.waitForInitialization();
 
@@ -142,17 +155,20 @@ describe('LDClientImpl', () => {
   });
 
   it('rejects the returned promise when initialization does not complete within the timeout', async () => {
-    setupMockStreamingProcessor(undefined, undefined, undefined, undefined, undefined, 10000);
-    client = createClient();
+    client = createClient({
+      updateProcessor: getUpdateProcessorFactory(false, 10000),
+    });
     await expect(async () => client.waitForInitialization({ timeout: 1 })).rejects.toThrow(
       'waitForInitialization timed out after 1 seconds.',
     );
   });
 
   it('logs an error when the initialization does not complete within the timeout', async () => {
-    setupMockStreamingProcessor(undefined, undefined, undefined, undefined, undefined, 10000);
     const logger = new TestLogger();
-    client = createClient({ logger });
+    client = createClient({
+      logger,
+      updateProcessor: getUpdateProcessorFactory(false, 10000),
+    });
     try {
       await client.waitForInitialization({ timeout: 1 });
     } catch {
@@ -167,14 +183,18 @@ describe('LDClientImpl', () => {
   });
 
   it('does not reject the returned promise when initialization completes within the timeout', async () => {
-    setupMockStreamingProcessor(undefined, undefined, undefined, undefined, undefined, 1000);
-    client = createClient();
-    await expect(async () => client.waitForInitialization({ timeout: 5 })).not.toThrow();
+    client = createClient({
+      updateProcessor: getUpdateProcessorFactory(false, 100),
+    });
+    await expect(client.waitForInitialization({ timeout: 3 })).resolves.not.toThrow();
   });
 
   it('logs when no timeout is set', async () => {
     const logger = new TestLogger();
-    client = createClient({ logger });
+    client = createClient({
+      logger,
+      updateProcessor: getUpdateProcessorFactory(),
+    });
     await client.waitForInitialization();
     logger.expectMessages([
       {
@@ -187,7 +207,10 @@ describe('LDClientImpl', () => {
 
   it('logs when the timeout is too high', async () => {
     const logger = new TestLogger();
-    client = createClient({ logger });
+    client = createClient({
+      logger,
+      updateProcessor: getUpdateProcessorFactory(),
+    });
     await client.waitForInitialization({ timeout: Number.MAX_SAFE_INTEGER });
 
     logger.expectMessages([
@@ -203,7 +226,7 @@ describe('LDClientImpl', () => {
     'does not log when timeout is under high timeout threshold',
     async (timeout) => {
       const logger = new TestLogger();
-      client = createClient({ logger });
+      client = createClient({ logger, updateProcessor: getUpdateProcessorFactory() });
       await client.waitForInitialization({ timeout });
       expect(logger.getCount(LogLevel.Warn)).toBe(0);
     },
diff --git a/packages/shared/sdk-server/__tests__/Migration.test.ts b/packages/shared/sdk-server/__tests__/Migration.test.ts
index 6434ec5f5..06db9a688 100644
--- a/packages/shared/sdk-server/__tests__/Migration.test.ts
+++ b/packages/shared/sdk-server/__tests__/Migration.test.ts
@@ -1,5 +1,3 @@
-import { createBasicPlatform } from '@launchdarkly/private-js-mocks';
-
 import {
   LDClientImpl,
   LDConcurrentExecution,
@@ -10,6 +8,7 @@ import {
 import { TestData } from '../src/integrations';
 import { LDClientCallbacks } from '../src/LDClientImpl';
 import { createMigration, LDMigrationError, LDMigrationSuccess } from '../src/Migration';
+import { createBasicPlatform } from './createBasicPlatform';
 import makeCallbacks from './makeCallbacks';
 
 describe('given an LDClient with test data', () => {
@@ -21,7 +20,7 @@ describe('given an LDClient with test data', () => {
     td = new TestData();
     callbacks = makeCallbacks(false);
     client = new LDClientImpl(
-      'sdk-key',
+      'sdk-key-migration',
       createBasicPlatform(),
       {
         updateProcessor: td.getFactory(),
diff --git a/packages/shared/sdk-server/__tests__/MigrationOpEvent.test.ts b/packages/shared/sdk-server/__tests__/MigrationOpEvent.test.ts
index f3b60b406..435c45a70 100644
--- a/packages/shared/sdk-server/__tests__/MigrationOpEvent.test.ts
+++ b/packages/shared/sdk-server/__tests__/MigrationOpEvent.test.ts
@@ -1,7 +1,6 @@
 import { AsyncQueue } from 'launchdarkly-js-test-helpers';
 
 import { internal } from '@launchdarkly/js-sdk-common';
-import { createBasicPlatform } from '@launchdarkly/private-js-mocks';
 
 import {
   LDClientImpl,
@@ -16,6 +15,7 @@ import { TestData } from '../src/integrations';
 import { LDClientCallbacks } from '../src/LDClientImpl';
 import { createMigration, LDMigrationError, LDMigrationSuccess } from '../src/Migration';
 import MigrationOpEventConversion from '../src/MigrationOpEventConversion';
+import { createBasicPlatform } from './createBasicPlatform';
 import makeCallbacks from './makeCallbacks';
 
 jest.mock('@launchdarkly/js-sdk-common', () => ({
@@ -43,7 +43,7 @@ describe('given an LDClient with test data', () => {
     td = new TestData();
     callbacks = makeCallbacks(false);
     client = new LDClientImpl(
-      'sdk-key',
+      'sdk-key-migration-op',
       createBasicPlatform(),
       {
         updateProcessor: td.getFactory(),
diff --git a/packages/shared/sdk-server/__tests__/createBasicPlatform.ts b/packages/shared/sdk-server/__tests__/createBasicPlatform.ts
new file mode 100644
index 000000000..17178f061
--- /dev/null
+++ b/packages/shared/sdk-server/__tests__/createBasicPlatform.ts
@@ -0,0 +1,59 @@
+import { PlatformData, SdkData } from '@launchdarkly/js-sdk-common';
+
+import { setupCrypto } from './setupCrypto';
+
+const setupInfo = () => ({
+  platformData: jest.fn(
+    (): PlatformData => ({
+      os: {
+        name: 'An OS',
+        version: '1.0.1',
+        arch: 'An Arch',
+      },
+      name: 'The SDK Name',
+      additional: {
+        nodeVersion: '42',
+      },
+      ld_application: {
+        key: '',
+        envAttributesVersion: '1.0',
+        id: 'com.testapp.ld',
+        name: 'LDApplication.TestApp',
+        version: '1.1.1',
+      },
+      ld_device: {
+        key: '',
+        envAttributesVersion: '1.0',
+        os: { name: 'Another OS', version: '99', family: 'orange' },
+        manufacturer: 'coconut',
+      },
+    }),
+  ),
+  sdkData: jest.fn(
+    (): SdkData => ({
+      name: 'An SDK',
+      version: '2.0.2',
+      userAgentBase: 'TestUserAgent',
+      wrapperName: 'Rapper',
+      wrapperVersion: '1.2.3',
+    }),
+  ),
+});
+
+export const createBasicPlatform = () => ({
+  encoding: {
+    btoa: (s: string) => Buffer.from(s).toString('base64'),
+  },
+  info: setupInfo(),
+  crypto: setupCrypto(),
+  requests: {
+    fetch: jest.fn(),
+    createEventSource: jest.fn(),
+    getEventSourceCapabilities: jest.fn(),
+  },
+  storage: {
+    get: jest.fn(),
+    set: jest.fn(),
+    clear: jest.fn(),
+  },
+});
diff --git a/packages/shared/sdk-server/__tests__/data_sources/FileDataSource.test.ts b/packages/shared/sdk-server/__tests__/data_sources/FileDataSource.test.ts
index 000314563..df0a2c920 100644
--- a/packages/shared/sdk-server/__tests__/data_sources/FileDataSource.test.ts
+++ b/packages/shared/sdk-server/__tests__/data_sources/FileDataSource.test.ts
@@ -1,5 +1,4 @@
 import { ClientContext, Context, Filesystem, WatchHandle } from '@launchdarkly/js-sdk-common';
-import { createBasicPlatform } from '@launchdarkly/private-js-mocks';
 
 import { Flag } from '../../src/evaluation/data/Flag';
 import { Segment } from '../../src/evaluation/data/Segment';
@@ -9,6 +8,7 @@ import Configuration from '../../src/options/Configuration';
 import AsyncStoreFacade from '../../src/store/AsyncStoreFacade';
 import InMemoryFeatureStore from '../../src/store/InMemoryFeatureStore';
 import VersionedDataKinds from '../../src/store/VersionedDataKinds';
+import { createBasicPlatform } from '../createBasicPlatform';
 import TestLogger from '../Logger';
 
 const flag1Key = 'flag1';
diff --git a/packages/shared/sdk-server/__tests__/data_sources/PollingProcessor.test.ts b/packages/shared/sdk-server/__tests__/data_sources/PollingProcessor.test.ts
index 19e2ac8a0..05ae9ff28 100644
--- a/packages/shared/sdk-server/__tests__/data_sources/PollingProcessor.test.ts
+++ b/packages/shared/sdk-server/__tests__/data_sources/PollingProcessor.test.ts
@@ -1,5 +1,4 @@
 import { ClientContext } from '@launchdarkly/js-sdk-common';
-import { createBasicPlatform } from '@launchdarkly/private-js-mocks';
 
 import { LDFeatureStore } from '../../src';
 import PollingProcessor from '../../src/data_sources/PollingProcessor';
@@ -8,6 +7,7 @@ import Configuration from '../../src/options/Configuration';
 import AsyncStoreFacade from '../../src/store/AsyncStoreFacade';
 import InMemoryFeatureStore from '../../src/store/InMemoryFeatureStore';
 import VersionedDataKinds from '../../src/store/VersionedDataKinds';
+import { createBasicPlatform } from '../createBasicPlatform';
 import TestLogger, { LogLevel } from '../Logger';
 
 describe('given an event processor', () => {
diff --git a/packages/shared/sdk-server/src/diagnostics/createDiagnosticsInitConfig.test.ts b/packages/shared/sdk-server/__tests__/diagnostics/createDiagnosticsInitConfig.test.ts
similarity index 92%
rename from packages/shared/sdk-server/src/diagnostics/createDiagnosticsInitConfig.test.ts
rename to packages/shared/sdk-server/__tests__/diagnostics/createDiagnosticsInitConfig.test.ts
index 1605d277c..f0e3d21ad 100644
--- a/packages/shared/sdk-server/src/diagnostics/createDiagnosticsInitConfig.test.ts
+++ b/packages/shared/sdk-server/__tests__/diagnostics/createDiagnosticsInitConfig.test.ts
@@ -1,8 +1,7 @@
-import { createBasicPlatform } from '@launchdarkly/private-js-mocks';
-
-import { LDOptions } from '../api';
-import Configuration from '../options/Configuration';
-import createDiagnosticsInitConfig from './createDiagnosticsInitConfig';
+import { LDOptions } from '../../src/api';
+import createDiagnosticsInitConfig from '../../src/diagnostics/createDiagnosticsInitConfig';
+import Configuration from '../../src/options/Configuration';
+import { createBasicPlatform } from '../createBasicPlatform';
 
 let mockPlatform: ReturnType<typeof createBasicPlatform>;
 
diff --git a/packages/shared/sdk-server/__tests__/evaluation/Bucketer.test.ts b/packages/shared/sdk-server/__tests__/evaluation/Bucketer.test.ts
index a1c10754c..5da1868e5 100644
--- a/packages/shared/sdk-server/__tests__/evaluation/Bucketer.test.ts
+++ b/packages/shared/sdk-server/__tests__/evaluation/Bucketer.test.ts
@@ -9,9 +9,9 @@ import {
   Hasher,
   LDContext,
 } from '@launchdarkly/js-sdk-common';
-import { createBasicPlatform } from '@launchdarkly/private-js-mocks';
 
 import Bucketer from '../../src/evaluation/Bucketer';
+import { createBasicPlatform } from '../createBasicPlatform';
 
 let mockPlatform: ReturnType<typeof createBasicPlatform>;
 
diff --git a/packages/shared/sdk-server/__tests__/evaluation/Evaluator.bucketing.test.ts b/packages/shared/sdk-server/__tests__/evaluation/Evaluator.bucketing.test.ts
index 35ddcd431..568292887 100644
--- a/packages/shared/sdk-server/__tests__/evaluation/Evaluator.bucketing.test.ts
+++ b/packages/shared/sdk-server/__tests__/evaluation/Evaluator.bucketing.test.ts
@@ -1,9 +1,9 @@
 import { Context } from '@launchdarkly/js-sdk-common';
-import { createBasicPlatform } from '@launchdarkly/private-js-mocks';
 
 import { Flag } from '../../src/evaluation/data/Flag';
 import { Rollout } from '../../src/evaluation/data/Rollout';
 import Evaluator from '../../src/evaluation/Evaluator';
+import { createBasicPlatform } from '../createBasicPlatform';
 import noQueries from './mocks/noQueries';
 
 describe('given a flag with a rollout', () => {
diff --git a/packages/shared/sdk-server/__tests__/evaluation/Evaluator.clause.test.ts b/packages/shared/sdk-server/__tests__/evaluation/Evaluator.clause.test.ts
index 8c32c816b..df260d17d 100644
--- a/packages/shared/sdk-server/__tests__/evaluation/Evaluator.clause.test.ts
+++ b/packages/shared/sdk-server/__tests__/evaluation/Evaluator.clause.test.ts
@@ -1,10 +1,10 @@
 import { AttributeReference, Context, LDContext } from '@launchdarkly/js-sdk-common';
-import { createBasicPlatform } from '@launchdarkly/private-js-mocks';
 
 import { Clause } from '../../src/evaluation/data/Clause';
 import { Flag } from '../../src/evaluation/data/Flag';
 import { FlagRule } from '../../src/evaluation/data/FlagRule';
 import Evaluator from '../../src/evaluation/Evaluator';
+import { createBasicPlatform } from '../createBasicPlatform';
 import {
   makeBooleanFlagWithOneClause,
   makeBooleanFlagWithRules,
diff --git a/packages/shared/sdk-server/__tests__/evaluation/Evaluator.rules.test.ts b/packages/shared/sdk-server/__tests__/evaluation/Evaluator.rules.test.ts
index 7ee33eaba..3be3e2819 100644
--- a/packages/shared/sdk-server/__tests__/evaluation/Evaluator.rules.test.ts
+++ b/packages/shared/sdk-server/__tests__/evaluation/Evaluator.rules.test.ts
@@ -1,12 +1,12 @@
 // Tests of flag evaluation at the rule level. Clause-level behavior is covered
 // in detail in Evaluator.clause.tests and (TODO: File for segments).
 import { AttributeReference, Context, LDContext } from '@launchdarkly/js-sdk-common';
-import { createBasicPlatform } from '@launchdarkly/private-js-mocks';
 
 import { Clause } from '../../src/evaluation/data/Clause';
 import { Flag } from '../../src/evaluation/data/Flag';
 import { FlagRule } from '../../src/evaluation/data/FlagRule';
 import Evaluator from '../../src/evaluation/Evaluator';
+import { createBasicPlatform } from '../createBasicPlatform';
 import {
   makeClauseThatDoesNotMatchUser,
   makeClauseThatMatchesUser,
diff --git a/packages/shared/sdk-server/__tests__/evaluation/Evaluator.segments.test.ts b/packages/shared/sdk-server/__tests__/evaluation/Evaluator.segments.test.ts
index d0f1f4eeb..d27ac07dd 100644
--- a/packages/shared/sdk-server/__tests__/evaluation/Evaluator.segments.test.ts
+++ b/packages/shared/sdk-server/__tests__/evaluation/Evaluator.segments.test.ts
@@ -7,13 +7,13 @@ import {
   Hmac,
   LDContext,
 } from '@launchdarkly/js-sdk-common';
-import { createBasicPlatform } from '@launchdarkly/private-js-mocks';
 
 import { BigSegmentStoreMembership } from '../../src/api/interfaces';
 import { Flag } from '../../src/evaluation/data/Flag';
 import { Segment } from '../../src/evaluation/data/Segment';
 import Evaluator from '../../src/evaluation/Evaluator';
 import { Queries } from '../../src/evaluation/Queries';
+import { createBasicPlatform } from '../createBasicPlatform';
 import {
   makeClauseThatDoesNotMatchUser,
   makeClauseThatMatchesUser,
diff --git a/packages/shared/sdk-server/__tests__/evaluation/Evaluator.test.ts b/packages/shared/sdk-server/__tests__/evaluation/Evaluator.test.ts
index 99325b8ef..64640b0c4 100644
--- a/packages/shared/sdk-server/__tests__/evaluation/Evaluator.test.ts
+++ b/packages/shared/sdk-server/__tests__/evaluation/Evaluator.test.ts
@@ -1,10 +1,10 @@
 import { Context, LDContext } from '@launchdarkly/js-sdk-common';
-import { createBasicPlatform } from '@launchdarkly/private-js-mocks';
 
 import { Flag } from '../../src/evaluation/data/Flag';
 import EvalResult from '../../src/evaluation/EvalResult';
 import Evaluator from '../../src/evaluation/Evaluator';
 import Reasons from '../../src/evaluation/Reasons';
+import { createBasicPlatform } from '../createBasicPlatform';
 import noQueries from './mocks/noQueries';
 
 const offBaseFlag = {
diff --git a/packages/shared/sdk-server/__tests__/events/EventProcessor.test.ts b/packages/shared/sdk-server/__tests__/events/EventProcessor.test.ts
index 6ea238ac9..98d747890 100644
--- a/packages/shared/sdk-server/__tests__/events/EventProcessor.test.ts
+++ b/packages/shared/sdk-server/__tests__/events/EventProcessor.test.ts
@@ -14,11 +14,11 @@ import {
   Response,
   SdkData,
 } from '@launchdarkly/js-sdk-common';
-import { createBasicPlatform } from '@launchdarkly/private-js-mocks';
 
 import ContextDeduplicator from '../../src/events/ContextDeduplicator';
 import Configuration from '../../src/options/Configuration';
 import InMemoryFeatureStore from '../../src/store/InMemoryFeatureStore';
+import { createBasicPlatform } from '../createBasicPlatform';
 
 let mockPlatform: ReturnType<typeof createBasicPlatform>;
 
diff --git a/packages/shared/sdk-server/__tests__/integrations/test_data/TestData.test.ts b/packages/shared/sdk-server/__tests__/integrations/test_data/TestData.test.ts
index 06c97f0fe..facb21258 100644
--- a/packages/shared/sdk-server/__tests__/integrations/test_data/TestData.test.ts
+++ b/packages/shared/sdk-server/__tests__/integrations/test_data/TestData.test.ts
@@ -1,5 +1,4 @@
 import { AttributeReference, ClientContext } from '@launchdarkly/js-sdk-common';
-import { createBasicPlatform } from '@launchdarkly/private-js-mocks';
 
 import { Flag } from '../../../src/evaluation/data/Flag';
 import { FlagRule } from '../../../src/evaluation/data/FlagRule';
@@ -8,6 +7,7 @@ import Configuration from '../../../src/options/Configuration';
 import AsyncStoreFacade from '../../../src/store/AsyncStoreFacade';
 import InMemoryFeatureStore from '../../../src/store/InMemoryFeatureStore';
 import VersionedDataKinds from '../../../src/store/VersionedDataKinds';
+import { createBasicPlatform } from '../../createBasicPlatform';
 
 const basicBooleanFlag: Flag = {
   fallthrough: {
diff --git a/packages/shared/sdk-server/__tests__/setupCrypto.ts b/packages/shared/sdk-server/__tests__/setupCrypto.ts
new file mode 100644
index 000000000..fc8d0b460
--- /dev/null
+++ b/packages/shared/sdk-server/__tests__/setupCrypto.ts
@@ -0,0 +1,20 @@
+import { Hasher } from '@launchdarkly/js-sdk-common';
+
+export const setupCrypto = () => {
+  let counter = 0;
+  const hasher = {
+    update: jest.fn((): Hasher => hasher),
+    digest: jest.fn(() => '1234567890123456'),
+  };
+
+  return {
+    createHash: jest.fn(() => hasher),
+    createHmac: jest.fn(),
+    randomUUID: jest.fn(() => {
+      counter += 1;
+      // Will provide a unique value for tests.
+      // Very much not a UUID of course.
+      return `${counter}`;
+    }),
+  };
+};
diff --git a/packages/shared/mocks/src/streamingProcessor.ts b/packages/shared/sdk-server/__tests__/streamingProcessor.ts
similarity index 98%
rename from packages/shared/mocks/src/streamingProcessor.ts
rename to packages/shared/sdk-server/__tests__/streamingProcessor.ts
index cd038e7ef..2f6e2a802 100644
--- a/packages/shared/mocks/src/streamingProcessor.ts
+++ b/packages/shared/sdk-server/__tests__/streamingProcessor.ts
@@ -5,7 +5,7 @@ import type {
   LDHeaders,
   LDStreamingError,
   ProcessStreamResponse,
-} from '@common';
+} from '@launchdarkly/js-sdk-common';
 
 export const MockStreamingProcessor = jest.fn();
 
diff --git a/packages/shared/sdk-server/package.json b/packages/shared/sdk-server/package.json
index 2ea1d6ac9..77de3fcbb 100644
--- a/packages/shared/sdk-server/package.json
+++ b/packages/shared/sdk-server/package.json
@@ -31,7 +31,6 @@
     "semver": "7.5.4"
   },
   "devDependencies": {
-    "@launchdarkly/private-js-mocks": "0.0.1",
     "@trivago/prettier-plugin-sort-imports": "^4.1.1",
     "@types/jest": "^29.4.0",
     "@types/semver": "^7.3.13",
diff --git a/packages/shared/sdk-server/src/data_sources/createStreamListeners.test.ts b/packages/shared/sdk-server/src/data_sources/createStreamListeners.test.ts
index 661a084c4..02df75aad 100644
--- a/packages/shared/sdk-server/src/data_sources/createStreamListeners.test.ts
+++ b/packages/shared/sdk-server/src/data_sources/createStreamListeners.test.ts
@@ -1,4 +1,4 @@
-import { createLogger } from '@launchdarkly/private-js-mocks';
+import { LDLogger } from '@launchdarkly/js-sdk-common';
 
 import { LDDataSourceUpdates } from '../api/subsystems';
 import { deserializeAll, deserializeDelete, deserializePatch } from '../store/serialization';
@@ -7,10 +7,15 @@ import { createStreamListeners } from './createStreamListeners';
 
 jest.mock('../store/serialization');
 
-let logger: ReturnType<typeof createLogger>;
+let logger: LDLogger;
 
 beforeEach(() => {
-  logger = createLogger();
+  logger = {
+    error: jest.fn(),
+    warn: jest.fn(),
+    info: jest.fn(),
+    debug: jest.fn(),
+  };
 });
 
 const allData = {
diff --git a/packages/telemetry/node-server-sdk-otel/package.json b/packages/telemetry/node-server-sdk-otel/package.json
index c52bdba45..27f53c379 100644
--- a/packages/telemetry/node-server-sdk-otel/package.json
+++ b/packages/telemetry/node-server-sdk-otel/package.json
@@ -34,7 +34,6 @@
   },
   "devDependencies": {
     "@launchdarkly/node-server-sdk": "9.6.0",
-    "@launchdarkly/private-js-mocks": "0.0.1",
     "@opentelemetry/api": ">=1.3.0",
     "@opentelemetry/sdk-node": "0.49.1",
     "@opentelemetry/sdk-trace-node": "1.22.0",
diff --git a/tsconfig.json b/tsconfig.json
index 91b995e66..e7ffa9fe3 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -7,9 +7,6 @@
     {
       "path": "./packages/shared/common/tsconfig.ref.json"
     },
-    {
-      "path": "./packages/shared/mocks/tsconfig.ref.json"
-    },
     {
       "path": "./packages/shared/sdk-client/tsconfig.ref.json"
     },