👍 Add isAny predicate function

Author: lambdalisue

is.ts

@@ -8,6 +8,14 @@ export type Predicate<T> = (x: unknown) => x is T;
  */
 export type PredicateType<P> = P extends Predicate<infer T> ? T : never;
 
+/**
+ * Always return `true` regardless of the type of `x`.
+ */
+// deno-lint-ignore no-explicit-any
+export function isAny(_x: unknown): _x is any {
+  return true;
+}
+
 /**
  * Return `true` if the type of `x` is `string`.
  */
@@ -404,6 +412,7 @@ export function isOptionalOf<T>(
 }
 
 export default {
+  Any: isAny,
   String: isString,
   Number: isNumber,
   BigInt: isBigInt,

is_test.ts

@@ -8,6 +8,7 @@ import type {
 } from "https://deno.land/[email protected]/testing/types.ts";
 import is, {
   isAllOf,
+  isAny,
   isArray,
   isArrayOf,
   isBigInt,
@@ -108,6 +109,25 @@ Deno.test("PredicateType", () => {
   >;
 });
 
+Deno.test("isAny", async (t) => {
+  await testWithExamples(t, isAny, {
+    validExamples: [
+      "string",
+      "number",
+      "bigint",
+      "boolean",
+      "array",
+      "record",
+      "function",
+      "null",
+      "undefined",
+      "symbol",
+      "date",
+      "promise",
+    ],
+  });
+});
+
 Deno.test("isString", async (t) => {
   await testWithExamples(t, isString, { validExamples: ["string"] });
 });