What is the test for an anti-SLAPP motion de novo?

We independently review the trial court's order granting the anti-SLAPP motion de novo. (Flatley v. Mauro (2006) 39 Cal.4th 299, 325-326.) "'We consider "the pleadings, and supporting and opposing affidavits... upon which the liability or defense is based." [Citation.] However, we neither "weigh credibility [nor] compare the weight of the evidence. Rather, [we] accept as true the evidence favorable to the plaintiff [citation] and evaluate the defendant's evidence only to determine if it has defeated that submitted by the plaintiff as a matter of law." [Citation.]' [Citation.]" (Id. at p. 326.)