Web IDL specifies that DOM operations must return a reject promise and never throw an exception, however V8 throws a TypeError if the receiver object is not of type of the interface.

https://heycam.github.io/webidl/#dfn-create-operation-function
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3.6.7. Operations
To create an operation function
...
And then, if an exception was thrown:
  1. If the operation has a return type that is a promise type, then:
    1. Let reject be the initial value of %Promise%.reject.
    2. Return the result of calling reject with %Promise% as the this object and the exception as the single argument value.
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If Blink specified v8::Signature when defining v8::FunctionTemplate for a DOM operation, V8 checks the signature when the function has got called, and then V8 throws a TypeError because of mismatch of the type of |this| object.  However, we'd like to return a reject promise created from a TypeError instead.

Should V8 provide a new API to support this situation?