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-rw-r--r--src/util/instanceOf.ts7
1 files changed, 5 insertions, 2 deletions
diff --git a/src/util/instanceOf.ts b/src/util/instanceOf.ts

index eb2894cd..869f56d4 100644 --- a/src/util/instanceOf.ts +++ b/src/util/instanceOf.ts
@@ -148,8 +148,11 @@ export function instanceOf( }) ); } - if (value instanceof type) return true; - throw new FieldError("BASE_TYPE_CLASS", req.t("common:field.BASE_TYPE_CLASS", { type })); + try { + if (value instanceof type) return true; + } catch (error) { + throw new FieldError("BASE_TYPE_CLASS", req.t("common:field.BASE_TYPE_CLASS", { type })); + } } if (typeof value !== "object") throw new FieldError("BASE_TYPE_OBJECT", req.t("common:field.BASE_TYPE_OBJECT"));