Split the `browser-ponyfill` into regular and extended like the main build.

I originally wanted to use just the extended version, since that will provide a full ponyfill. But the extended build is smaller (≈30% unminifed, ≈10% minified).

README.md

@@ -96,7 +96,10 @@ In addition, we handle the following info (that is not technically part of exten
 
 - [`transports`](https://w3c.github.io/webauthn/#dom-authenticatorattestationresponse-transports-slot) (on a public key credential)
 
-If you need to convert additional input or output extensions, use `createExtended()` and `getExtended()` from `@github/webauthn-json/extended`.
+If you need to convert additional input or output extensions, use either of the following:
+
+- `createExtended()` and `getExtended()` from `@github/webauthn-json/extended`.
+- `parseExtendedCreationOptionsFromJSON()` and `parseExtendedRequestOptionsFromJSON()` from `@github/webauthn-json/browser-ponyfill/extended`.
 
 ## Contributions
 

browser-ponyfill/extended/package.json

@@ -0,0 +1,4 @@
+{
+  "main": "../../dist/esm/webauthn-json.browser-ponyfill.extended.js",
+  "types": "../../dist/types/browser-ponyfill.extended.d.ts"
+}

package.json

@@ -24,6 +24,11 @@
       "require": "./dist/cjs/webauthn-json.browser-ponyfill.cjs",
       "import": "./dist/esm/webauthn-json.browser-ponyfill.js",
       "types": "./dist/types/browser-ponyfill.d.ts"
+    },
+    "./browser-ponyfill/extended": {
+      "require": "./dist/cjs/webauthn-json.browser-ponyfill.extended.cjs",
+      "import": "./dist/esm/webauthn-json.browser-ponyfill.extended.js",
+      "types": "./dist/types/browser-ponyfill.extended.d.ts"
     }
   },
   "devDependencies": {

script/build-js.js

@@ -66,6 +66,15 @@ build({
   outfile: "dist/esm/webauthn-json.browser-ponyfill.js",
 });
 
+build({
+  entryPoints: ["src/webauthn-json/browser-ponyfill.extended.ts"],
+  format: "esm",
+  target: "es2019",
+  bundle: true,
+  sourcemap: true,
+  outfile: "dist/esm/webauthn-json.browser-ponyfill.extended.js",
+});
+
 const { version } = JSON.parse(
   readFileSync(new URL("../package.json", import.meta.url)),
 );

src/webauthn-json/browser-ponyfill.extended.ts

@@ -0,0 +1,51 @@
+import {
+  createExtendedRequestFromJSON as parseExtendedCreationOptionsFromJSON,
+  createExtendedResponseToJSON,
+  CredentialCreationOptionsExtendedJSON,
+  CredentialRequestOptionsExtendedJSON,
+  getExtendedRequestFromJSON as parseExtendedRequestOptionsFromJSON,
+  getExtendedResponseToJSON,
+  PublicKeyCredentialWithAssertionExtendedResultsJSON as AuthenticationResponseExtendedJSON,
+  PublicKeyCredentialWithAttestationExtendedResultsJSON as RegistrationResponseExtendedJSON,
+  supported,
+} from "./extended";
+
+export {
+  parseExtendedCreationOptionsFromJSON,
+  parseExtendedRequestOptionsFromJSON,
+  supported,
+};
+export type {
+  CredentialCreationOptionsExtendedJSON,
+  CredentialRequestOptionsExtendedJSON,
+  AuthenticationResponseExtendedJSON,
+  RegistrationResponseExtendedJSON,
+};
+
+export interface RegistrationPublicKeyCredential extends PublicKeyCredential {
+  toJSON(): RegistrationResponseExtendedJSON;
+}
+
+export async function createExtended(
+  options: CredentialCreationOptions,
+): Promise<RegistrationPublicKeyCredential> {
+  const response = (await navigator.credentials.create(
+    options,
+  )) as RegistrationPublicKeyCredential;
+  response.toJSON = () => createExtendedResponseToJSON(response);
+  return response;
+}
+
+export interface AuthenticationPublicKeyCredential extends PublicKeyCredential {
+  toJSON(): AuthenticationResponseExtendedJSON;
+}
+
+export async function getExtended(
+  options: CredentialRequestOptions,
+): Promise<AuthenticationPublicKeyCredential> {
+  const response = (await navigator.credentials.get(
+    options,
+  )) as AuthenticationPublicKeyCredential;
+  response.toJSON = () => getExtendedResponseToJSON(response);
+  return response;
+}

src/webauthn-json/browser-ponyfill.ts

@@ -1,25 +1,28 @@
 import {
-  createExtendedRequestFromJSON as parseCreationOptionsFromJSON,
-  createExtendedResponseToJSON,
-  CredentialCreationOptionsExtendedJSON,
-  CredentialRequestOptionsExtendedJSON,
-  getExtendedRequestFromJSON as parseRequestOptionsFromJSON,
-  getExtendedResponseToJSON,
-  PublicKeyCredentialWithAssertionExtendedResultsJSON as AuthenticationResponseExtendedJSON,
-  PublicKeyCredentialWithAttestationExtendedResultsJSON as RegistrationResponseExtendedJSON,
-  supported,
-} from "./extended";
+  createRequestFromJSON as parseCreationOptionsFromJSON,
+  createResponseToJSON,
+  getRequestFromJSON as parseRequestOptionsFromJSON,
+  getResponseToJSON,
+} from "./basic/api";
+import { supported } from "./basic/supported";
+
+import {
+  CredentialCreationOptionsJSON,
+  CredentialRequestOptionsJSON,
+  PublicKeyCredentialWithAssertionJSON as AuthenticationResponseJSON,
+  PublicKeyCredentialWithAttestationJSON as RegistrationResponseJSON,
+} from "./basic/json";
 
 export { parseCreationOptionsFromJSON, parseRequestOptionsFromJSON, supported };
 export type {
-  CredentialCreationOptionsExtendedJSON,
-  CredentialRequestOptionsExtendedJSON,
-  AuthenticationResponseExtendedJSON,
-  RegistrationResponseExtendedJSON,
+  CredentialCreationOptionsJSON,
+  CredentialRequestOptionsJSON,
+  AuthenticationResponseJSON,
+  RegistrationResponseJSON,
 };
 
 export interface RegistrationPublicKeyCredential extends PublicKeyCredential {
-  toJSON(): RegistrationResponseExtendedJSON;
+  toJSON(): RegistrationResponseJSON;
 }
 
 export async function create(
@@ -28,12 +31,12 @@ export async function create(
   const response = (await navigator.credentials.create(
     options,
   )) as RegistrationPublicKeyCredential;
-  response.toJSON = () => createExtendedResponseToJSON(response);
+  response.toJSON = () => createResponseToJSON(response);
   return response;
 }
 
 export interface AuthenticationPublicKeyCredential extends PublicKeyCredential {
-  toJSON(): AuthenticationResponseExtendedJSON;
+  toJSON(): AuthenticationResponseJSON;
 }
 
 export async function get(
@@ -42,6 +45,6 @@ export async function get(
   const response = (await navigator.credentials.get(
     options,
   )) as AuthenticationPublicKeyCredential;
-  response.toJSON = () => getExtendedResponseToJSON(response);
+  response.toJSON = () => getResponseToJSON(response);
   return response;
 }