diff --git a/packages/babel-core/src/config/index.ts b/packages/babel-core/src/config/index.ts
index d231a8ec6d59..aff0cc5b7fd2 100644
--- a/packages/babel-core/src/config/index.ts
+++ b/packages/babel-core/src/config/index.ts
@@ -18,7 +18,10 @@ type PluginAPI = basePluginAPI & typeof import("..");
 type PresetAPI = basePresetAPI & typeof import("..");
 export type { PluginAPI, PresetAPI };
 // todo: may need to refine PresetObject to be a subset of ValidatedOptions
-export type { ValidatedOptions as PresetObject } from "./validation/options";
+export type {
+  CallerMetadata,
+  ValidatedOptions as PresetObject,
+} from "./validation/options";
 
 import loadFullConfig from "./full";
 import { loadPartialConfig as loadPartialConfigRunner } from "./partial";
diff --git a/packages/babel-core/src/index.ts b/packages/babel-core/src/index.ts
index cdbc2e6998bb..fdebb2cd1a4c 100644
--- a/packages/babel-core/src/index.ts
+++ b/packages/babel-core/src/index.ts
@@ -30,6 +30,8 @@ export {
 } from "./config";
 
 export type {
+  CallerMetadata,
+  InputOptions,
   PluginAPI,
   PluginObject,
   PresetAPI,
diff --git a/packages/babel-plugin-transform-runtime/src/get-runtime-path/browser.ts b/packages/babel-plugin-transform-runtime/src/get-runtime-path/browser.ts
index 94af79f4ce4d..53cc0f75469c 100644
--- a/packages/babel-plugin-transform-runtime/src/get-runtime-path/browser.ts
+++ b/packages/babel-plugin-transform-runtime/src/get-runtime-path/browser.ts
@@ -1,4 +1,8 @@
-export default function (moduleName, dirname, absoluteRuntime) {
+export default function (
+  moduleName: string,
+  dirname: string,
+  absoluteRuntime: string | boolean,
+) {
   if (absoluteRuntime === false) return moduleName;
 
   resolveFSPath();
diff --git a/packages/babel-plugin-transform-runtime/src/get-runtime-path/index.ts b/packages/babel-plugin-transform-runtime/src/get-runtime-path/index.ts
index 37fdc83a6827..ac92873a8e05 100644
--- a/packages/babel-plugin-transform-runtime/src/get-runtime-path/index.ts
+++ b/packages/babel-plugin-transform-runtime/src/get-runtime-path/index.ts
@@ -3,7 +3,11 @@ import path from "path";
 import { createRequire } from "module";
 const require = createRequire(import.meta.url);
 
-export default function (moduleName, dirname, absoluteRuntime) {
+export default function (
+  moduleName: string,
+  dirname: string,
+  absoluteRuntime: string | boolean,
+) {
   if (absoluteRuntime === false) return moduleName;
 
   return resolveAbsoluteRuntime(
@@ -33,6 +37,6 @@ function resolveAbsoluteRuntime(moduleName: string, dirname: string) {
   }
 }
 
-export function resolveFSPath(path) {
+export function resolveFSPath(path: string) {
   return require.resolve(path).replace(/\\/g, "/");
 }
diff --git a/packages/babel-plugin-transform-runtime/src/helpers.ts b/packages/babel-plugin-transform-runtime/src/helpers.ts
index ad77e524f9ae..bea33ed07af0 100644
--- a/packages/babel-plugin-transform-runtime/src/helpers.ts
+++ b/packages/babel-plugin-transform-runtime/src/helpers.ts
@@ -1,6 +1,9 @@
 import semver from "semver";
 
-export function hasMinVersion(minVersion, runtimeVersion) {
+export function hasMinVersion(
+  minVersion: string,
+  runtimeVersion: string | void,
+) {
   // If the range is unavailable, we're running the script during Babel's
   // build process, and we want to assume that all versions are satisfied so
   // that the built output will include all definitions.
diff --git a/packages/babel-plugin-transform-runtime/src/index.ts b/packages/babel-plugin-transform-runtime/src/index.ts
index b734e4b6e3fc..d16ea9acae92 100644
--- a/packages/babel-plugin-transform-runtime/src/index.ts
+++ b/packages/babel-plugin-transform-runtime/src/index.ts
@@ -4,6 +4,7 @@ import { types as t } from "@babel/core";
 
 import { hasMinVersion } from "./helpers";
 import getRuntimePath, { resolveFSPath } from "./get-runtime-path";
+import type { PluginAPI, PluginObject, CallerMetadata } from "@babel/core";
 
 import _pluginCorejs2 from "babel-plugin-polyfill-corejs2";
 import _pluginCorejs3 from "babel-plugin-polyfill-corejs3";
@@ -17,7 +18,8 @@ const pluginRegenerator = (_pluginRegenerator.default ||
 
 const pluginsCompat = "#__secret_key__@babel/runtime__compatibility";
 
-function supportsStaticESM(caller) {
+function supportsStaticESM(caller: CallerMetadata | void) {
+  // @ts-ignore TS does not narrow down optional chaining
   return !!caller?.supportsStaticESM;
 }
 
@@ -30,6 +32,35 @@ export interface Options {
   version?: string;
 }
 
+interface CoreJS2PluginOptions {
+  absoluteImports: string | false;
+  method: "usage-pure";
+  [pluginsCompat]: {
+    runtimeVersion: string;
+    useBabelRuntime: string | false;
+    ext: string;
+  };
+}
+
+interface RegeneratorPluginOptions {
+  absoluteImports: string | false;
+  method: "usage-pure";
+  [pluginsCompat]: {
+    useBabelRuntime: string | false;
+  };
+}
+
+interface CoreJS3PluginOptions {
+  absoluteImports: string | false;
+  method: "usage-pure";
+  proposals: boolean;
+  version: number;
+  [pluginsCompat]: {
+    useBabelRuntime: string | false;
+    ext: string;
+  };
+}
+
 export default declare((api, options: Options, dirname) => {
   api.assertVersion(7);
 
@@ -106,11 +137,12 @@ export default declare((api, options: Options, dirname) => {
     var supportsCJSDefault = hasMinVersion(DUAL_MODE_RUNTIME, runtimeVersion);
   }
 
-  function has(obj, key) {
+  function has(obj: {}, key: string) {
     return Object.prototype.hasOwnProperty.call(obj, key);
   }
 
   if (has(options, "useBuiltIns")) {
+    // @ts-expect-error deprecated options
     if (options["useBuiltIns"]) {
       throw new Error(
         "The 'useBuiltIns' option has been removed. The @babel/runtime " +
@@ -125,6 +157,7 @@ export default declare((api, options: Options, dirname) => {
   }
 
   if (has(options, "polyfill")) {
+    // @ts-expect-error deprecated options
     if (options["polyfill"] === false) {
       throw new Error(
         "The 'polyfill' option has been removed. The @babel/runtime " +
@@ -163,8 +196,20 @@ export default declare((api, options: Options, dirname) => {
 
   const modulePath = getRuntimePath(moduleName, dirname, absoluteRuntime);
 
-  function createCorejsPlgin(plugin, options, regeneratorPlugin) {
-    return (api, _, filename) => {
+  function createCorejsPlgin<Options extends {}>(
+    plugin: (
+      api: PluginAPI,
+      options: Options,
+      filename: string,
+    ) => PluginObject,
+    options: Options,
+    regeneratorPlugin: (
+      api: PluginAPI,
+      options: RegeneratorPluginOptions,
+      filename: string,
+    ) => PluginObject,
+  ): (api: PluginAPI, options: {}, filename: string) => PluginObject {
+    return (api: PluginAPI, _: {}, filename: string) => {
       return {
         ...plugin(api, options, filename),
         inherits: regeneratorPlugin,
@@ -173,7 +218,13 @@ export default declare((api, options: Options, dirname) => {
   }
 
   // TODO: Remove this in Babel 8
-  function createRegeneratorPlugin(options) {
+  function createRegeneratorPlugin(
+    options: RegeneratorPluginOptions,
+  ): (
+    api: PluginAPI,
+    options: RegeneratorPluginOptions,
+    filename: string,
+  ) => PluginObject {
     if (!useRuntimeRegenerator) return undefined;
     return (api, _, filename) => {
       return pluginRegenerator(api, options, filename);
@@ -184,7 +235,7 @@ export default declare((api, options: Options, dirname) => {
     name: "transform-runtime",
 
     inherits: injectCoreJS2
-      ? createCorejsPlgin(
+      ? createCorejsPlgin<CoreJS2PluginOptions>(
           pluginCorejs2,
           {
             method: "usage-pure",
@@ -202,7 +253,7 @@ export default declare((api, options: Options, dirname) => {
           }),
         )
       : injectCoreJS3
-      ? createCorejsPlgin(
+      ? createCorejsPlgin<CoreJS3PluginOptions>(
           pluginCorejs3,
           {
             method: "usage-pure",
@@ -226,7 +277,7 @@ export default declare((api, options: Options, dirname) => {
     pre(file) {
       if (!useRuntimeHelpers) return;
 
-      file.set("helperGenerator", name => {
+      file.set("helperGenerator", (name: string) => {
         // If the helper didn't exist yet at the version given, we bail
         // out and let Babel either insert it directly, or throw an error
         // so that plugins can handle that case properly.
@@ -271,9 +322,9 @@ export default declare((api, options: Options, dirname) => {
       const cache = new Map();
 
       function addDefaultImport(
-        source,
-        nameHint,
-        blockHoist,
+        source: string,
+        nameHint: string,
+        blockHoist: number,
         isHelper = false,
       ) {
         // If something on the page adds a helper when the file is an ES6