diff --git a/testing/web-platform/meta/MANIFEST.json b/testing/web-platform/meta/MANIFEST.json
index 64331ca8acd2..a1286cd925e9 100644
--- a/testing/web-platform/meta/MANIFEST.json
+++ b/testing/web-platform/meta/MANIFEST.json
@@ -1878408,6 +1878408,28 @@ html
 "
 IndexedDB
 /
+bigint_value
+.
+htm
+"
+:
+[
+[
+"
+/
+IndexedDB
+/
+bigint_value
+.
+htm
+"
+{
+}
+]
+]
+"
+IndexedDB
+/
 bindings
 -
 inject
@@ -2641173,6 +2641195,22 @@ testharness
 "
 IndexedDB
 /
+bigint_value
+.
+htm
+"
+:
+[
+"
+dcfface11b3fbbf7ba21262d687c2a0f4ed99300
+"
+"
+testharness
+"
+]
+"
+IndexedDB
+/
 bindings
 -
 inject
diff --git a/testing/web-platform/tests/IndexedDB/bigint_value.htm b/testing/web-platform/tests/IndexedDB/bigint_value.htm
new file mode 100644
index 000000000000..cb2fe64faf40
--- /dev/null
+++ b/testing/web-platform/tests/IndexedDB/bigint_value.htm
@@ -0,0 +1,567 @@
+<
+!
+DOCTYPE
+html
+>
+<
+meta
+charset
+=
+"
+utf
+-
+8
+"
+>
+<
+title
+>
+IndexedDB
+:
+BigInt
+keys
+and
+values
+<
+/
+title
+>
+<
+script
+src
+=
+"
+/
+resources
+/
+testharness
+.
+js
+"
+>
+<
+/
+script
+>
+<
+script
+src
+=
+"
+/
+resources
+/
+testharnessreport
+.
+js
+"
+>
+<
+/
+script
+>
+<
+script
+src
+=
+"
+support
+.
+js
+"
+>
+<
+/
+script
+>
+<
+script
+>
+/
+/
+BigInt
+and
+BigInt
+objects
+are
+supported
+in
+serialization
+per
+/
+/
+https
+:
+/
+/
+github
+.
+com
+/
+whatwg
+/
+html
+/
+pull
+/
+3480
+/
+/
+This
+support
+allows
+them
+to
+be
+used
+as
+IndexedDB
+values
+.
+function
+value_test
+(
+value
+predicate
+name
+)
+{
+async_test
+(
+t
+=
+>
+{
+t
+.
+step
+(
+function
+(
+)
+{
+assert_true
+(
+predicate
+(
+value
+)
+"
+Predicate
+should
+return
+true
+for
+the
+initial
+value
+.
+"
+)
+;
+}
+)
+;
+createdb
+(
+t
+)
+.
+onupgradeneeded
+=
+t
+.
+step_func
+(
+e
+=
+>
+{
+e
+.
+target
+.
+result
+.
+createObjectStore
+(
+"
+store
+"
+)
+.
+add
+(
+value
+1
+)
+;
+e
+.
+target
+.
+onsuccess
+=
+t
+.
+step_func
+(
+e
+=
+>
+{
+e
+.
+target
+.
+result
+.
+transaction
+(
+"
+store
+"
+)
+.
+objectStore
+(
+"
+store
+"
+)
+.
+get
+(
+1
+)
+.
+onsuccess
+=
+t
+.
+step_func
+(
+e
+=
+>
+{
+assert_true
+(
+predicate
+(
+e
+.
+target
+.
+result
+)
+"
+Predicate
+should
+return
+true
+for
+the
+deserialized
+result
+.
+"
+)
+;
+t
+.
+done
+(
+)
+;
+}
+)
+;
+}
+)
+;
+}
+)
+;
+}
+"
+BigInts
+as
+values
+in
+IndexedDB
+-
+"
++
+name
+)
+;
+}
+value_test
+(
+1n
+x
+=
+>
+x
+=
+=
+=
+1n
+"
+primitive
+BigInt
+"
+)
+;
+value_test
+(
+Object
+(
+1n
+)
+x
+=
+>
+typeof
+x
+=
+=
+=
+'
+object
+'
+&
+&
+x
+instanceof
+BigInt
+&
+&
+x
+.
+valueOf
+(
+)
+=
+=
+=
+1n
+"
+BigInt
+object
+"
+)
+;
+value_test
+(
+{
+val
+:
+1n
+}
+x
+=
+>
+x
+.
+val
+=
+=
+=
+1n
+"
+primitive
+BigInt
+inside
+object
+"
+)
+;
+value_test
+(
+{
+val
+:
+Object
+(
+1n
+)
+}
+x
+=
+>
+x
+.
+val
+.
+valueOf
+(
+)
+=
+=
+=
+1n
+&
+&
+x
+.
+val
+instanceof
+BigInt
+&
+&
+x
+.
+val
+.
+valueOf
+(
+)
+=
+=
+=
+1n
+"
+BigInt
+object
+inside
+object
+"
+)
+;
+/
+/
+However
+BigInt
+is
+not
+supported
+as
+an
+IndexedDB
+key
+;
+support
+/
+/
+has
+been
+proposed
+in
+the
+following
+PR
+but
+that
+change
+has
+not
+/
+/
+landed
+at
+the
+time
+this
+patch
+was
+written
+/
+/
+https
+:
+/
+/
+github
+.
+com
+/
+w3c
+/
+IndexedDB
+/
+pull
+/
+231
+function
+invalidKey
+(
+key
+name
+)
+{
+test
+(
+t
+=
+>
+{
+assert_throws
+(
+"
+DataError
+"
+(
+)
+=
+>
+indexedDB
+.
+cmp
+(
+0
+key
+)
+)
+;
+}
+"
+BigInts
+as
+keys
+in
+IndexedDB
+-
+"
++
+name
+)
+;
+}
+invalidKey
+(
+1n
+"
+primitive
+BigInt
+"
+)
+;
+/
+/
+Still
+an
+error
+even
+if
+the
+IndexedDB
+patch
+lands
+invalidKey
+(
+Object
+(
+1n
+)
+"
+BigInt
+object
+"
+)
+;
+<
+/
+script
+>