Function relativize

relativize(base: string, reference: string): string
Creates a relative reference from base to reference.
- Hierarchical identifiers: Computes the shortest path-relative reference that, when resolved against base, yields reference
- Authority-less hierarchical identifiers (app:/…, file:///…): Returns the root-relative path
- Opaque identifiers: Returns the scheme-specific part if schemes match
The returned reference always resolves back to reference under RFC 3986 § 5 and under any conforming URL parser: a first segment carrying a colon is prefixed with a ./ dot segment so it cannot read as a scheme, and where an empty first segment would read as an authority the absolute reference is returned instead. Callers may therefore resolve the result against base without further escaping.
Parameters
- base: string
  The absolute base identifier
- reference: string
  The reference to relativize
Returns string
A relative reference from base to reference, or the normalized absolute reference if not relativizable

Throws
RangeError If base is not a valid absolute identifier or reference is not a valid relative reference, for instance because it carries an isolated UTF-16 surrogate or opens with //
- Defined in standards/resource.ts:574