ImmutableURIinterface

{
	readonly hash: URIHash | ``;
	readonly host: string;
	readonly hostname: string;
	readonly href: URIString;
	readonly origin: URIString | `null`;
	readonly password: string;
	readonly pathname: string;
	readonly port: string;
	readonly protocol: URIScheme;
	readonly search: URISearch | ``;
	readonly username: string;
}

Property	Type
`.hash`	`URIHash` ``	Hash component of the URI, including the leading `#` (empty string if absent). required readonly
`.host`	`string`	Host component of the URI (hostname and port), or empty string for non-hierarchical URIs. required readonly
`.hostname`	`string`	Hostname component of the URI, or empty string for non-hierarchical URIs. required readonly
`.href`	`URIString`	Full URI string. required readonly
`.origin`	`URIString` `null`	Origin of the URI, or the string `"null"` for origins that cannot be serialised. required readonly
`.password`	`string`	Password component of the URI (empty string if absent). required readonly
`.pathname`	`string`	Pathname component of the URI. required readonly
`.port`	`string`	Port component of the URI (empty string if absent). required readonly
`.protocol`	`URIScheme`	Protocol scheme of the URI, including the trailing `:` required readonly
`.search`	`URISearch` ``	Search component of the URI, including the leading `?` (empty string if absent). required readonly
`.username`	`string`	Username component of the URI (empty string if absent). required readonly

Object that describes a valid URI, e.g. urn:isbn:0451450523 or http://example.com/path/to/resource

Improves the builtin Javascript URL class to more accurately type its properties.

URI and URL differences:

According to RFC 3986, URLs are a subset of URIs that have a hierarchical path component, e.g. http://example.com/path.
The // at the start of a URL indicates that it has a hierarchical path component, so this makes it a URL.
The absence of // indicates a non-hierarchical URI.
URLs can be considered as "hierarchical URIs".
All URLs are also URIs, but not all URIs are URLs.