sign and fetch functions don't *exactly* match TypeScripts' types.

[adworacz]

aws4fetch/dist/main.d.ts

Lines 20 to 35 in 03f9802

	sign(input: RequestInfo, init?: (RequestInit & {
	aws?: {
	accessKeyId?: string | undefined;
	secretAccessKey?: string | undefined;
	sessionToken?: string | undefined;
	service?: string | undefined;
	region?: string | undefined;
	cache?: Map<string, ArrayBuffer> | undefined;
	datetime?: string | undefined;
	signQuery?: boolean | undefined;
	appendSessionToken?: boolean | undefined;
	allHeaders?: boolean | undefined;
	singleEncode?: boolean | undefined;
	} | undefined;
	}) | null | undefined): Promise<Request>;
	fetch(input: RequestInfo, init?: (RequestInit & {

See TypeScripts signature here: https://github.com/microsoft/TypeScript/blob/main/lib/lib.dom.d.ts#L16971

Note the inclusion of the | URL in the input parameter types.

This is causing errors when using code/types that include things like:

type FetchParameters = Parameters<typeof fetch>
...
const [url, init]: FetchParams = ...
const signed = aws.sign(url, { ...init, ...}) // Type error about incompatible types with `URL`