Revert "Guard heif bitdepth property for prebuilt binaries"

This reverts commit aa1bbcb.

Author: kleisauke

lib/output.mjs

@@ -1206,7 +1206,6 @@ function tiff (options) {
  * Use these AVIF options for output image.
  *
  * AVIF image sequences are not supported.
- * Prebuilt binaries support a bitdepth of 8 only.
  *
  * When using Windows ARM64, this feature requires a CPU with ARM64v8.4 or later.
  *
@@ -1297,9 +1296,6 @@ function heif (options) {
     }
     if (is.defined(options.bitdepth)) {
       if (is.integer(options.bitdepth) && is.inArray(options.bitdepth, [8, 10, 12])) {
-        if (options.bitdepth !== 8 && this.constructor.versions.heif) {
-          throw is.invalidParameterError('bitdepth when using prebuilt binaries', 8, options.bitdepth);
-        }
         this.options.heifBitdepth = options.bitdepth;
       } else {
         throw is.invalidParameterError('bitdepth', '8, 10 or 12', options.bitdepth);

test/unit/heif.js

@@ -93,17 +93,10 @@ suite('HEIF', () => {
     });
   });
   test('valid bitdepth value does not throw an error', (t) => {
-    t.plan(2);
-    const { heif } = sharp.versions;
-    delete sharp.versions.heif;
+    t.plan(1);
     t.assert.doesNotThrow(() => {
       sharp().heif({ compression: 'av1', bitdepth: 12 });
     });
-    sharp.versions.heif = '1.2.3';
-    t.assert.throws(() => {
-      sharp().heif({ compression: 'av1', bitdepth: 10 });
-    }, /Error: Expected 8 for bitdepth when using prebuilt binaries but received 10 of type number/);
-    sharp.versions.heif = heif;
   });
   test('invalid bitdepth value should throw an error', (t) => {
     t.plan(1);