diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3aa4c8e..7e2cb00 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # deverything
 
+## 0.27.1
+
+### Patch Changes
+
+- guard bool
+
 ## 0.27.0
 
 ### Minor Changes
diff --git a/package.json b/package.json
index 960003d..2d2b770 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "deverything",
-  "version": "0.27.0",
+  "version": "0.27.1",
   "description": "Everything you need for Dev",
   "main": "./dist/index.js",
   "module": "./dist/index.mjs",
diff --git a/src/helpers/dir.ts b/src/helpers/dir.ts
new file mode 100644
index 0000000..1c6476a
--- /dev/null
+++ b/src/helpers/dir.ts
@@ -0,0 +1,6 @@
+/**
+ * Print or log helper that does not break on circular references, and expands nested objects.
+ */
+export const dir = (arg: any, depth = 5): void => {
+  console.dir(arg, { depth });
+};
diff --git a/src/helpers/index.ts b/src/helpers/index.ts
index e78d974..ed1acc2 100644
--- a/src/helpers/index.ts
+++ b/src/helpers/index.ts
@@ -4,6 +4,7 @@ export * from "./arrayIntersection";
 export * from "./capitalize";
 export * from "./clamp";
 export * from "./cleanSpaces";
+export * from "./dir";
 export * from "./first";
 export * from "./firstKey";
 export * from "./firstValue";
diff --git a/src/helpers/pretty.ts b/src/helpers/pretty.ts
index 3217eb4..ad7bf19 100644
--- a/src/helpers/pretty.ts
+++ b/src/helpers/pretty.ts
@@ -1,5 +1,6 @@
 import { objectSerializer } from "../_internals/objectSerializer";
 
+// TODO: deprecate and rename to stringify
 export const pretty = (arg?: any) => {
   return JSON.stringify(arg, objectSerializer(), 2);
 };
diff --git a/src/validators/isBoolean.ts b/src/validators/isBoolean.ts
index 839a8bf..76a0d48 100644
--- a/src/validators/isBoolean.ts
+++ b/src/validators/isBoolean.ts
@@ -1,2 +1,2 @@
-export const isBoolean = (arg: any) =>
+export const isBoolean = (arg: any): arg is boolean =>
   Object.prototype.toString.call(arg) === "[object Boolean]";
diff --git a/src/validators/isLastIndex.ts b/src/validators/isLastIndex.ts
index 56b083f..6dc2802 100644
--- a/src/validators/isLastIndex.ts
+++ b/src/validators/isLastIndex.ts
@@ -1,3 +1,3 @@
-export const isLastIndex = (index: number, array: any[]) => {
+export const isLastIndex = (index: number, array: any[]): boolean => {
   return index === array.length - 1;
 };
diff --git a/src/validators/isValue.ts b/src/validators/isValue.ts
index 5fcddcb..ca011e3 100644
--- a/src/validators/isValue.ts
+++ b/src/validators/isValue.ts
@@ -1,5 +1,5 @@
 import { Maybe } from "../types";
 
-export const isValue = (arg?: Maybe<any>) => {
+export const isValue = (arg?: Maybe<any>): boolean => {
   return arg !== undefined && arg !== null && !Number.isNaN(arg);
 };