Docs: prebuilt binaries support tile-based output (#4305)

Except when targeting WebAssembly.

docs/api-output.md

@@ -762,10 +762,6 @@ Use a `.zip` or `.szi` file extension with `toFile` to write to a compressed arc
 
 The container will be set to `zip` when the output is a Buffer or Stream, otherwise it will default to `fs`.
 
-Requires libvips compiled with support for libgsf.
-The prebuilt binaries do not include this - see
-[installing a custom libvips](https://sharp.pixelplumbing.com/install#custom-libvips).
-
 
 **Throws**:
 

docs/install.md

@@ -135,6 +135,8 @@ Use in web browsers is unsupported.
 
 Native text rendering is unsupported.
 
+[Tile-based output](/api-output#tile) is unsupported.
+
 ```sh
 npm install --cpu=wasm32 sharp
 ```

lib/index.d.ts

@@ -799,8 +799,6 @@ declare namespace sharp {
          * Use tile-based deep zoom (image pyramid) output.
          * Set the format and options for tile images via the toFormat, jpeg, png or webp functions.
          * Use a .zip or .szi file extension with toFile to write to a compressed archive file format.
-         *
-         * Warning: multiple sharp instances concurrently producing tile output can expose a possible race condition in some versions of libgsf.
          * @param tile tile options
          * @throws {Error} Invalid options
          * @returns A sharp instance that can be used to chain operations

lib/output.js

@@ -1232,10 +1232,6 @@ function raw (options) {
  *
  * The container will be set to `zip` when the output is a Buffer or Stream, otherwise it will default to `fs`.
  *
- * Requires libvips compiled with support for libgsf.
- * The prebuilt binaries do not include this - see
- * {@link https://sharp.pixelplumbing.com/install#custom-libvips installing a custom libvips}.
- *
  * @example
  *  sharp('input.tiff')
  *   .png()