fix: Allow DOMException.

Author: cartant

source/rules/rxjsThrowErrorRule.ts

@@ -83,7 +83,7 @@ export class Walker extends Lint.ProgramAwareRuleWalker {
     const typeChecker = this.getTypeChecker();
     const type = typeChecker.getTypeAtLocation(node.expression);
 
-    if (!isAny(type) && !couldBeType(type, "Error")) {
+    if (!isAny(type) && !couldBeType(type, /^(Error|DOMException)$/)) {
       this.addFailureAtNode(node.expression, Rule.FAILURE_STRING);
     }
 

test/v6/fixtures/throw-error/notified/fixture.ts.lint

@@ -3,6 +3,7 @@ import { throwError } from "rxjs";
 const ob1 = throwError("Boom!");
                        ~~~~~~~              [throw-error]
 const ob2 = throwError(new Error("Boom!"));
+const ob3 = throwError(new DOMException("Boom!"));
 
 // There will be no signature for callback and
 // that should not effect and internal error.

test/v6/fixtures/throw-error/thrown/fixture.ts.lint

@@ -1,5 +1,6 @@
 const a = () => { throw "error"; };
                         ~~~~~~~                 [throw-error]
 const b = () => { throw new Error("error"); };
+const c = () => { throw new DOMException("error"); };
 
 [throw-error]: Passing non-Error values is forbidden