class AssertionError extends ErrorDeprecatedDeprecated(will be removed after 1.0.0) Import from https://deno.land/std/assert/assertion_error.ts instead. import { AssertionError } from "https://deno.land/std@0.223.0/testing/asserts.ts"; Error thrown when an assertion fails. ExamplesExample 1 import { AssertionError } from "https://deno.land/std@0.223.0/testing/asserts.ts"; throw new AssertionError("Assertion failed"); ConstructorsnewAssertionError(message: string)Constructs a new instance.