crypto: allow unbound SubtleCrypto.supports

Static Web IDL operations do not require an interface receiver. Signed-off-by: Filip Skokan <panva.ip@gmail.com> Assisted-by: Codex
panva · Sep 22, 2026 · Sep 22, 2026 · Sep 22, 2026 · Sep 22, 2026 · Sep 22, 2026
commit 3d8975bd697b9464b358268de0e8ce09d7a1e0c2
diff --git a/lib/internal/crypto/webcrypto.js b/lib/internal/crypto/webcrypto.js
@@ -1759,7 +1759,6 @@ class SubtleCrypto {
   // Implements https://wicg.github.io/webcrypto-modern-algos/#SubtleCrypto-method-supports
   static supports(operation, algorithm, lengthOrAdditionalAlgorithm = null) {
     emitExperimentalWarning('The supports Web Crypto API method');
-    if (this !== SubtleCrypto) throw new ERR_INVALID_THIS('SubtleCrypto constructor');
     webidl ??= require('internal/crypto/webidl');
     const prefix = "Failed to execute 'supports' on 'SubtleCrypto'";
     webidl.requiredArguments(arguments.length, 2, { prefix });

diff --git a/test/parallel/test-webcrypto-constructors.js b/test/parallel/test-webcrypto-constructors.js
@@ -142,7 +142,7 @@ const notSubtle = Reflect.construct(function() {}, [], SubtleCrypto);
 // Test SubtleCrypto.supports
 {
   assert.throws(() => SubtleCrypto.supports.call(undefined), {
-    name: 'TypeError', code: 'ERR_INVALID_THIS',
+    name: 'TypeError', code: 'ERR_MISSING_ARGS',
   });
 }
 

diff --git a/test/parallel/test-webcrypto-supports-receiver.js b/test/parallel/test-webcrypto-supports-receiver.js
@@ -0,0 +1,14 @@
+'use strict';
+
+const common = require('../common');
+if (!common.hasCrypto)
+  common.skip('missing crypto');
+
+const assert = require('assert');
+const { supports } = SubtleCrypto;
+
+assert.strictEqual(supports('digest', 'SHA-256'), true);
+for (const receiver of [undefined, null, {}, globalThis.crypto.subtle]) {
+  assert.strictEqual(supports.call(receiver, 'digest', 'SHA-256'), true);
+  assert.strictEqual(supports.call(receiver, 'digest', 'unknown'), false);
+}