feat(headers): added (non-standard) toJSON to the Headers class

README.md

@@ -167,6 +167,7 @@ These are features in `fetch-h2`, that don't exist in the Fetch API. Some things
  * The `Request` class (options to `fetch`) has an extra property `allowForbiddenHeaders`, which defaults to `false`.
  * The `Response` class also has an extra property `allowForbiddenHeaders`, which defaults to `false` (or to the value of the `Request` if it was constructed through a `fetch` call, which is the common case).
  * The response object has an extra property `httpVersion` which is either `1` or `2` (numbers), depending on what was negotiated with the server.
+ * The `Headers` class (e.g. retried by `{response}.headers`) has a `toJSON` function which converts the headers to a simple JavaScript object.
 
 
 ## Contexts

lib/headers.ts

@@ -237,6 +237,16 @@ export class Headers
 		for ( const value of this._data.values( ) )
 			yield value.join( "," );
 	}
+
+	// This is non-standard, but useful
+	public toJSON( )
+	{
+		return [ ...this.entries( ) ]
+			.reduce( ( prev, [ key, val ] ) =>
+				Object.assign( prev, { [ key ]: val } ),
+				{ }
+			);
+	}
 }
 
 export class GuardedHeaders extends Headers