diff --git a/.changelog/5978-fix-shipped-typings.md b/.changelog/5978-fix-shipped-typings.md
new file mode 100644
index 0000000000..52584b3d3e
--- /dev/null
+++ b/.changelog/5978-fix-shipped-typings.md
@@ -0,0 +1,3 @@
+### Fixed
+
+- Fixed type errors in the published typings when `skipLibCheck` is turned off, in PR [#5978](https://github.com/microsoft/BotFramework-WebChat/pull/5978), by [@OEvgeny](https://github.com/OEvgeny)
diff --git a/packages/api/src/decorator/private/templateDecorator.tsx b/packages/api/src/decorator/private/templateDecorator.tsx
index cb80e1f6c6..f3ec6d2138 100644
--- a/packages/api/src/decorator/private/templateDecorator.tsx
+++ b/packages/api/src/decorator/private/templateDecorator.tsx
@@ -108,6 +108,11 @@ export default function templateDecorator<
   };
 }
 
-export type InferMiddleware<T extends ReturnType<typeof templateDecorator>> = T['~types']['middleware'];
-export type InferProps<T extends ReturnType<typeof templateDecorator>> = T['~types']['props'];
-export type InferRequest<T extends ReturnType<typeof templateDecorator>> = T['~types']['request'];
+// Only constrain on `~types`: under `strictFunctionTypes`, a template with specific props is not assignable to `ReturnType<typeof templateDecorator>`.
+type TemplateDecoratorTypes = {
+  readonly '~types': { readonly middleware: unknown; readonly props: unknown; readonly request: unknown };
+};
+
+export type InferMiddleware<T extends TemplateDecoratorTypes> = T['~types']['middleware'];
+export type InferProps<T extends TemplateDecoratorTypes> = T['~types']['props'];
+export type InferRequest<T extends TemplateDecoratorTypes> = T['~types']['request'];
diff --git a/packages/api/src/types/WebSpeechPonyfill.ts b/packages/api/src/types/WebSpeechPonyfill.ts
index dee36f7948..272555a23a 100644
--- a/packages/api/src/types/WebSpeechPonyfill.ts
+++ b/packages/api/src/types/WebSpeechPonyfill.ts
@@ -1,4 +1,9 @@
-/* globals SpeechGrammarList, SpeechRecognition, SpeechSynthesis */
+/* globals SpeechSynthesis */
+
+import { type TypeOfGlobal } from '@msinternal/botframework-webchat-base/utils';
+
+// `SpeechGrammarList` and `SpeechRecognition` are not in TypeScript's DOM library, they come from `@types/dom-speech-recognition`.
+// Use `typeof SpeechGrammarList`/`typeof SpeechRecognition` again when TypeScript's DOM library includes them.
 
 type WebSpeechPonyfill = {
   /**
@@ -9,10 +14,10 @@ type WebSpeechPonyfill = {
   resumeAudioContext?: () => Promise<void>;
 
   /** Polyfill for Web Speech API `SpeechGrammarList` class. */
-  SpeechGrammarList?: typeof SpeechGrammarList;
+  SpeechGrammarList?: TypeOfGlobal<'SpeechGrammarList', new () => object>;
 
   /** Polyfill for Web Speech API `SpeechRecognition` class. */
-  SpeechRecognition?: typeof SpeechRecognition;
+  SpeechRecognition?: TypeOfGlobal<'SpeechRecognition', new () => object>;
 
   /** Polyfill for Web Speech API `speechSynthesis` instance. */
   speechSynthesis?: SpeechSynthesis;
diff --git a/packages/base/src/utils/TypeOfGlobal.ts b/packages/base/src/utils/TypeOfGlobal.ts
new file mode 100644
index 0000000000..a6f4ef5ff8
--- /dev/null
+++ b/packages/base/src/utils/TypeOfGlobal.ts
@@ -0,0 +1,10 @@
+/**
+ * Type of a global, or `Fallback` if the consumer's global types do not declare it.
+ *
+ * Use this instead of `typeof X` in published typings when `X` is not in TypeScript's DOM library, e.g. `setImmediate`
+ * (Node.js types) or `SpeechRecognition` (`@types/dom-speech-recognition`), so consumers without these types do not get
+ * "Cannot find name".
+ */
+type TypeOfGlobal<Name extends string, Fallback> = typeof globalThis extends Record<Name, infer T> ? T : Fallback;
+
+export { type TypeOfGlobal };
diff --git a/packages/base/src/utils/index.ts b/packages/base/src/utils/index.ts
index ab2260fd7d..5d0a2be96e 100644
--- a/packages/base/src/utils/index.ts
+++ b/packages/base/src/utils/index.ts
@@ -6,5 +6,6 @@ export { default as iterateEquals } from './iterateEquals';
 export { type OneOrMany } from './OneOrMany';
 export { default as singleToArray } from './singleToArray';
 export { default as toSpliced } from './toSpliced';
+export { type TypeOfGlobal } from './TypeOfGlobal';
 export { default as warnOnce } from './warnOnce';
 export { default as withResolvers, type PromiseWithResolvers } from './withResolvers';
diff --git a/packages/bundle/src/boot/actual/component/minimal.ts b/packages/bundle/src/boot/actual/component/minimal.ts
index ceadf00b3b..81a4bd4a7d 100644
--- a/packages/bundle/src/boot/actual/component/minimal.ts
+++ b/packages/bundle/src/boot/actual/component/minimal.ts
@@ -31,8 +31,5 @@ export {
   UploadButton,
   VideoContent,
   VimeoContent,
-  YouTubeContent,
-  type BasicWebChatProps,
-  type ComposerProps,
-  type ReactWebChatProps
+  YouTubeContent
 } from 'botframework-webchat-component/component.js';
diff --git a/packages/bundle/src/boot/actual/decorator.ts b/packages/bundle/src/boot/actual/decorator.ts
index 7052e86704..d42530ac34 100644
--- a/packages/bundle/src/boot/actual/decorator.ts
+++ b/packages/bundle/src/boot/actual/decorator.ts
@@ -5,9 +5,6 @@ export {
   createActivityBorderMiddleware,
   createActivityGroupingMiddleware,
   DecoratorComposer,
-  useDecoratorRequest,
-  type ActivityBorderDecoratorProps,
-  type DecoratorMiddleware,
-  type InferDecoratorRequest
+  useDecoratorRequest
 } from 'botframework-webchat-api/decorator.js';
 export { BorderFlair, BorderLoader, WebChatDecorator } from 'botframework-webchat-component/decorator.js';
diff --git a/packages/bundle/src/boot/actual/hook/minimal.ts b/packages/bundle/src/boot/actual/hook/minimal.ts
index 4f45c9575f..45425eb16f 100644
--- a/packages/bundle/src/boot/actual/hook/minimal.ts
+++ b/packages/bundle/src/boot/actual/hook/minimal.ts
@@ -100,7 +100,5 @@ export {
   useVoiceRecordingMuted,
   useVoiceSelector,
   useVoiceState,
-  useWebSpeechPonyfill,
-  type DropZoneState,
-  type SendBoxFocusOptions
+  useWebSpeechPonyfill
 } from 'botframework-webchat-component/hook.js';
diff --git a/packages/bundle/src/boot/actual/internal.ts b/packages/bundle/src/boot/actual/internal.ts
index 394a48c44e..fc8c411144 100644
--- a/packages/bundle/src/boot/actual/internal.ts
+++ b/packages/bundle/src/boot/actual/internal.ts
@@ -1,9 +1,4 @@
 // We should review exports in this file to make sure 1P = 3P.
-export {
-  type ActivityMiddleware,
-  type ActivityStatusMiddleware,
-  type TypingIndicatorMiddleware
-} from 'botframework-webchat-api';
 export { usePostVoiceActivity, useShouldShowMicrophoneButton } from 'botframework-webchat-api/internal.js';
 export {
   CodeHighlighterComposer,
@@ -16,14 +11,11 @@ export {
   serializeDocumentFragmentIntoString,
   useActivityStyleOptions,
   useCodeHighlighter,
-  useLiveRegion,
-  type HighlightCodeFn
+  useLiveRegion
 } from 'botframework-webchat-component/internal.js';
 export {
   getOrgSchemaMessage,
   getVoiceActivityRole,
   getVoiceActivityText,
-  isVoiceTranscriptActivity,
-  type DirectLineCardAction,
-  type WebChatActivity
+  isVoiceTranscriptActivity
 } from 'botframework-webchat-core';
diff --git a/packages/bundle/src/boot/actual/minimal.ts b/packages/bundle/src/boot/actual/minimal.ts
index b6f82d3ef0..78a3a85a66 100644
--- a/packages/bundle/src/boot/actual/minimal.ts
+++ b/packages/bundle/src/boot/actual/minimal.ts
@@ -7,9 +7,10 @@ const { object: buildInfoObject, version } = buildInfo;
 // #endregion
 
 export { concatMiddleware, createStyleSet, testIds, withEmoji } from 'botframework-webchat-component';
+export { type ReactWebChatProps } from 'botframework-webchat-component/component.js';
 export { Constants, createStore, createStoreWithDevTools, createStoreWithOptions } from 'botframework-webchat-core';
 export { default as createBrowserWebSpeechPonyfillFactory } from '../../createBrowserWebSpeechPonyfillFactory';
-export { ReactWebChat, type ReactWebChatProps } from './component/minimal';
+export { ReactWebChat } from './component/minimal';
 export { default as createDirectLine } from './private/createDirectLine';
 export { default as createDirectLineAppServiceExtension } from './private/createDirectLineAppServiceExtension';
 export { renderWebChat } from './renderWebChat/minimal';
diff --git a/packages/bundle/src/boot/exports/component.ts b/packages/bundle/src/boot/exports/component.ts
index e82ed79727..c99d73d1cf 100644
--- a/packages/bundle/src/boot/exports/component.ts
+++ b/packages/bundle/src/boot/exports/component.ts
@@ -1 +1,8 @@
 export * from '../actual/component/full';
+
+// Types are exported here instead of `../actual/component/minimal`, see the namespaces in `./minimal.ts`.
+export {
+  type BasicWebChatProps,
+  type ComposerProps,
+  type ReactWebChatProps
+} from 'botframework-webchat-component/component.js';
diff --git a/packages/bundle/src/boot/exports/decorator.ts b/packages/bundle/src/boot/exports/decorator.ts
index 0c659581dd..52aea59e44 100644
--- a/packages/bundle/src/boot/exports/decorator.ts
+++ b/packages/bundle/src/boot/exports/decorator.ts
@@ -1 +1,8 @@
 export * from '../actual/decorator';
+
+// Types are exported here instead of `../actual/decorator`, see the namespaces in `./minimal.ts`.
+export {
+  type ActivityBorderDecoratorProps,
+  type DecoratorMiddleware,
+  type InferDecoratorRequest
+} from 'botframework-webchat-api/decorator.js';
diff --git a/packages/bundle/src/boot/exports/hook.ts b/packages/bundle/src/boot/exports/hook.ts
index e2b1e978be..98b84b85a7 100644
--- a/packages/bundle/src/boot/exports/hook.ts
+++ b/packages/bundle/src/boot/exports/hook.ts
@@ -1 +1,4 @@
 export * from '../actual/hook/full';
+
+// Types are exported here instead of `../actual/hook/minimal`, see the namespaces in `./minimal.ts`.
+export { type DropZoneState, type SendBoxFocusOptions } from 'botframework-webchat-component/hook.js';
diff --git a/packages/bundle/src/boot/exports/internal.ts b/packages/bundle/src/boot/exports/internal.ts
index af61492c07..0bd96909da 100644
--- a/packages/bundle/src/boot/exports/internal.ts
+++ b/packages/bundle/src/boot/exports/internal.ts
@@ -1 +1,10 @@
 export * from '../actual/internal';
+
+// Types are exported here instead of `../actual/internal`, see the namespaces in `./minimal.ts`.
+export {
+  type ActivityMiddleware,
+  type ActivityStatusMiddleware,
+  type TypingIndicatorMiddleware
+} from 'botframework-webchat-api';
+export { type HighlightCodeFn } from 'botframework-webchat-component/internal.js';
+export { type DirectLineCardAction, type WebChatActivity } from 'botframework-webchat-core';
diff --git a/packages/bundle/src/boot/exports/minimal.ts b/packages/bundle/src/boot/exports/minimal.ts
index c0f67e7f6c..3b02e91c6f 100644
--- a/packages/bundle/src/boot/exports/minimal.ts
+++ b/packages/bundle/src/boot/exports/minimal.ts
@@ -3,6 +3,8 @@ export { ReactWebChat as default } from '../actual/minimal'; // export * does no
 
 // #region Backward compatibility
 // Web devs should move to named exports instead.
+// Keep types out of these namespaces until rollup-plugin-dts (used by tsup) emits types imported from another package as types:
+// it emits them as `declare const X: typeof X`, which fails type checking (TS2693). Entry points export them instead, e.g. `./decorator.ts`.
 export * as Components from '../actual/component/minimal';
 export * as decorator from '../actual/decorator';
 export * as hooks from '../actual/hook/minimal';
diff --git a/packages/bundle/src/markdown/createStreamingRenderer.spec.ts b/packages/bundle/src/markdown/createMarkdownStreamingRenderer.spec.ts
similarity index 98%
rename from packages/bundle/src/markdown/createStreamingRenderer.spec.ts
rename to packages/bundle/src/markdown/createMarkdownStreamingRenderer.spec.ts
index 02f557d3e7..9f08a30a23 100644
--- a/packages/bundle/src/markdown/createStreamingRenderer.spec.ts
+++ b/packages/bundle/src/markdown/createMarkdownStreamingRenderer.spec.ts
@@ -1,13 +1,13 @@
 /** @jest-environment @happy-dom/jest-environment */
 /// <reference types="jest" />
 
-import createStreamingRenderer, { STREAMING_ERROR } from './createStreamingRenderer';
+import createMarkdownStreamingRenderer, { STREAMING_ERROR } from './createMarkdownStreamingRenderer';
 
-const OPTIONS: Parameters<typeof createStreamingRenderer>[0] = {
+const OPTIONS: Parameters<typeof createMarkdownStreamingRenderer>[0] = {
   markdownRespectCRLF: false
 };
 
-const INIT: Parameters<typeof createStreamingRenderer>[1] = {
+const INIT: Parameters<typeof createMarkdownStreamingRenderer>[1] = {
   externalLinkAlt: 'Opens in a new window'
 };
 
@@ -18,7 +18,7 @@ function setup() {
 
   document.body.appendChild(container);
 
-  const renderer = createStreamingRenderer(OPTIONS, INIT);
+  const renderer = createMarkdownStreamingRenderer(OPTIONS, INIT);
 
   currentContainer = container;
 
@@ -80,7 +80,7 @@ function splitBySentinel(container: HTMLElement): [string, string] | null {
   return [committedDiv.innerHTML.trim(), activeDiv.innerHTML.trim()];
 }
 
-describe('createStreamingRenderer', () => {
+describe('createMarkdownStreamingRenderer', () => {
   afterEach(() => {
     if (!currentContainer) {
       return;
diff --git a/packages/bundle/src/markdown/createStreamingRenderer.ts b/packages/bundle/src/markdown/createMarkdownStreamingRenderer.ts
similarity index 99%
rename from packages/bundle/src/markdown/createStreamingRenderer.ts
rename to packages/bundle/src/markdown/createMarkdownStreamingRenderer.ts
index 68a535dc6a..576aaf4e1d 100644
--- a/packages/bundle/src/markdown/createStreamingRenderer.ts
+++ b/packages/bundle/src/markdown/createMarkdownStreamingRenderer.ts
@@ -87,7 +87,7 @@ function findTopLevelBlocks(events: ReadonlyArray<Event>): readonly BlockBoundar
   return blocks;
 }
 
-export default function createStreamingRenderer(
+export default function createMarkdownStreamingRenderer(
   { markdownRenderHTML, markdownRespectCRLF }: StreamingRenderOptions,
   { externalLinkAlt }: StreamingRenderInit
 ): StreamingRenderer {
diff --git a/packages/bundle/src/markdown/renderMarkdown.ts b/packages/bundle/src/markdown/renderMarkdown.ts
index d3a7896597..10e43ce6a3 100644
--- a/packages/bundle/src/markdown/renderMarkdown.ts
+++ b/packages/bundle/src/markdown/renderMarkdown.ts
@@ -8,12 +8,12 @@ import katex from 'katex';
 import { micromark } from 'micromark';
 import { gfm, gfmHtml } from 'micromark-extension-gfm';
 
-import createStreamingRenderer, {
+import createMarkdownStreamingRenderer, {
   type StreamingNextOptions,
   type StreamingNextResult,
   type StreamingRenderer,
   type StreamingRenderOptions
-} from './createStreamingRenderer';
+} from './createMarkdownStreamingRenderer';
 import { math, mathHtml } from './mathExtension';
 import { createDecorate } from './private/createDecorate';
 import iterateLinkDefinitions from './private/iterateLinkDefinitions';
@@ -67,6 +67,7 @@ export default function render(
   return serializeDocumentFragmentIntoString(documentFragmentAfterMarkdown).trim();
 }
 
-render.createStreamingRenderer = createStreamingRenderer;
+// The function is named differently than the property: in our typings, `typeof createStreamingRenderer` would refer to the property itself.
+render.createStreamingRenderer = createMarkdownStreamingRenderer;
 
 export { type StreamingNextOptions, type StreamingNextResult, type StreamingRenderer, type StreamingRenderOptions };
diff --git a/packages/component/src/types/ContextOf.ts b/packages/component/src/types/ContextOf.ts
index 2546f15502..b2d6a84bdd 100644
--- a/packages/component/src/types/ContextOf.ts
+++ b/packages/component/src/types/ContextOf.ts
@@ -1,5 +1,5 @@
 import { type Context } from 'react';
 
-type ContextOf<T extends Context<unknown>> = T extends Context<infer C> ? C : never;
+type ContextOf<T> = T extends Context<infer C> ? C : never;
 
 export type { ContextOf };
diff --git a/packages/core/src/types/internal/GlobalScopeClock.ts b/packages/core/src/types/internal/GlobalScopeClock.ts
index 23b2a1733b..aea8e09db2 100644
--- a/packages/core/src/types/internal/GlobalScopeClock.ts
+++ b/packages/core/src/types/internal/GlobalScopeClock.ts
@@ -1,10 +1,13 @@
+import { type TypeOfGlobal } from '@msinternal/botframework-webchat-base/utils';
+
 export type GlobalScopeClock = {
   // eslint-disable-next-line no-restricted-globals
   cancelAnimationFrame?: typeof cancelAnimationFrame | undefined;
   // eslint-disable-next-line no-restricted-globals
   cancelIdleCallback?: typeof cancelIdleCallback | undefined;
-  // eslint-disable-next-line no-restricted-globals
-  clearImmediate?: typeof clearImmediate | undefined;
+  // `setImmediate` and `clearImmediate` are Node.js globals, not in TypeScript's DOM library.
+  // Fallbacks are the same types as in `env.d.ts`.
+  clearImmediate?: TypeOfGlobal<'clearImmediate', (timeout: number) => void> | undefined;
   // eslint-disable-next-line no-restricted-globals
   clearInterval?: typeof clearInterval | undefined;
   // eslint-disable-next-line no-restricted-globals
@@ -15,8 +18,7 @@ export type GlobalScopeClock = {
   requestAnimationFrame?: typeof requestAnimationFrame | undefined;
   // eslint-disable-next-line no-restricted-globals
   requestIdleCallback?: typeof requestIdleCallback | undefined;
-  // eslint-disable-next-line no-restricted-globals
-  setImmediate?: typeof setImmediate | undefined;
+  setImmediate?: TypeOfGlobal<'setImmediate', (fn: () => void) => number> | undefined;
   // eslint-disable-next-line no-restricted-globals
   setInterval?: typeof setInterval | undefined;
   // eslint-disable-next-line no-restricted-globals