diff --git a/README.md b/README.md
index 65910ae..eb2ec65 100644
--- a/README.md
+++ b/README.md
@@ -159,7 +159,7 @@ You can define any custom Guard with [`TValidate`](/docs/modules.md#tvalidate).
 Defining a guard that validates if a number is bigger than 10:
 
 ```ts
-const TNumberBiggerThan10 = TValidate(
+const TNumberBiggerThan10 = TValidate<number>(
   "number(bigger than 10)",
   (value) => typeof value === "number" && value > 10
 );
diff --git a/docs/README.md b/docs/README.md
index daa6528..c8f95b1 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -161,7 +161,7 @@ You can define any custom Guard with [`TValidate`](/docs/modules.md#tvalidate).
 Defining a guard that validates if a number is bigger than 10:
 
 ```ts
-const TNumberBiggerThan10 = TValidate(
+const TNumberBiggerThan10 = TValidate<number>(
   "number(bigger than 10)",
   (value) => typeof value === "number" && value > 10
 );
diff --git a/docs/classes/Guard.md b/docs/classes/Guard.md
index c143453..293abbb 100644
--- a/docs/classes/Guard.md
+++ b/docs/classes/Guard.md
@@ -47,7 +47,7 @@ An abstract class, which is the parent class of all Guards. (Names starting with
 
 #### Defined in
 
-[src/Guard.ts:11](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/Guard.ts#L11)
+[src/Guard.ts:11](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/Guard.ts#L11)
 
 ## Methods
 
@@ -67,7 +67,7 @@ An abstract class, which is the parent class of all Guards. (Names starting with
 
 #### Defined in
 
-[src/Guard.ts:13](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/Guard.ts#L13)
+[src/Guard.ts:13](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/Guard.ts#L13)
 
 ___
 
@@ -87,4 +87,4 @@ value is T
 
 #### Defined in
 
-[src/Guard.ts:12](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/Guard.ts#L12)
+[src/Guard.ts:12](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/Guard.ts#L12)
diff --git a/docs/classes/ValidationError.md b/docs/classes/ValidationError.md
index 8823660..fada9f0 100644
--- a/docs/classes/ValidationError.md
+++ b/docs/classes/ValidationError.md
@@ -48,7 +48,7 @@ Error.constructor
 
 #### Defined in
 
-[src/errors.ts:5](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/errors.ts#L5)
+[src/errors.ts:5](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/errors.ts#L5)
 
 ## Properties
 
@@ -58,7 +58,7 @@ Error.constructor
 
 #### Defined in
 
-[src/errors.ts:3](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/errors.ts#L3)
+[src/errors.ts:3](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/errors.ts#L3)
 
 ___
 
@@ -96,7 +96,7 @@ ___
 
 #### Defined in
 
-[src/errors.ts:2](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/errors.ts#L2)
+[src/errors.ts:2](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/errors.ts#L2)
 
 ___
 
diff --git a/docs/modules.md b/docs/modules.md
index 4eb4317..739181e 100644
--- a/docs/modules.md
+++ b/docs/modules.md
@@ -68,7 +68,7 @@ Infers the type, that the given `Guard` guards.
 
 #### Defined in
 
-[src/Guard.ts:22](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/Guard.ts#L22)
+[src/Guard.ts:22](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/Guard.ts#L22)
 
 ___
 
@@ -82,7 +82,7 @@ ___
 
 #### Defined in
 
-[src/guards/TObject/types.ts:16](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TObject/types.ts#L16)
+[src/guards/TObject/types.ts:16](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TObject/types.ts#L16)
 
 ## Variables
 
@@ -96,7 +96,7 @@ Guard that accepts any value.
 
 #### Defined in
 
-[src/guards/TAny/index.ts:8](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TAny/index.ts#L8)
+[src/guards/TAny/index.ts:8](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TAny/index.ts#L8)
 
 ___
 
@@ -111,7 +111,7 @@ Does not accept null.
 
 #### Defined in
 
-[src/guards/TAnyObject/index.ts:9](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TAnyObject/index.ts#L9)
+[src/guards/TAnyObject/index.ts:9](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TAnyObject/index.ts#L9)
 
 ___
 
@@ -125,7 +125,7 @@ Primitive guard that only accepts `bigint` values.
 
 #### Defined in
 
-[src/guards/TBigInt/index.ts:8](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TBigInt/index.ts#L8)
+[src/guards/TBigInt/index.ts:8](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TBigInt/index.ts#L8)
 
 ___
 
@@ -139,7 +139,7 @@ Primitive guard that only accepts `boolean` values.
 
 #### Defined in
 
-[src/guards/TBoolean/index.ts:8](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TBoolean/index.ts#L8)
+[src/guards/TBoolean/index.ts:8](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TBoolean/index.ts#L8)
 
 ___
 
@@ -153,7 +153,7 @@ Primitive guard that only accepts `function` values.
 
 #### Defined in
 
-[src/guards/TFunction/index.ts:8](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TFunction/index.ts#L8)
+[src/guards/TFunction/index.ts:8](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TFunction/index.ts#L8)
 
 ___
 
@@ -174,7 +174,7 @@ TInteger.isValid(15); // true
 
 #### Defined in
 
-[src/guards/TInteger/index.ts:15](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TInteger/index.ts#L15)
+[src/guards/TInteger/index.ts:15](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TInteger/index.ts#L15)
 
 ___
 
@@ -195,7 +195,7 @@ TIntegerAsString.isValid("15"); // true
 
 #### Defined in
 
-[src/guards/TIntegerAsString/index.ts:16](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TIntegerAsString/index.ts#L16)
+[src/guards/TIntegerAsString/index.ts:16](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TIntegerAsString/index.ts#L16)
 
 ___
 
@@ -209,7 +209,7 @@ Guard that only accepts `null`.
 
 #### Defined in
 
-[src/guards/TNull/index.ts:8](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TNull/index.ts#L8)
+[src/guards/TNull/index.ts:8](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TNull/index.ts#L8)
 
 ___
 
@@ -224,7 +224,7 @@ Not accepts `NaN`.
 
 #### Defined in
 
-[src/guards/TNumber/index.ts:9](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TNumber/index.ts#L9)
+[src/guards/TNumber/index.ts:9](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TNumber/index.ts#L9)
 
 ___
 
@@ -245,7 +245,7 @@ TNumberAsString.isValid("15.223"); // true
 
 #### Defined in
 
-[src/guards/TNumberAsString/index.ts:15](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TNumberAsString/index.ts#L15)
+[src/guards/TNumberAsString/index.ts:15](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TNumberAsString/index.ts#L15)
 
 ___
 
@@ -259,7 +259,7 @@ Primitive guard that only accepts `string` values.
 
 #### Defined in
 
-[src/guards/TString/index.ts:8](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TString/index.ts#L8)
+[src/guards/TString/index.ts:8](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TString/index.ts#L8)
 
 ___
 
@@ -280,7 +280,7 @@ TStringEmail.name === "string(email)"; // true
 
 #### Defined in
 
-[src/guards/TStringEmail/index.ts:16](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TStringEmail/index.ts#L16)
+[src/guards/TStringEmail/index.ts:16](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TStringEmail/index.ts#L16)
 
 ___
 
@@ -301,7 +301,7 @@ TStringISODate.name === "string(date)"; // true
 
 #### Defined in
 
-[src/guards/TStringISODate/index.ts:16](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TStringISODate/index.ts#L16)
+[src/guards/TStringISODate/index.ts:16](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TStringISODate/index.ts#L16)
 
 ___
 
@@ -322,7 +322,7 @@ TStringJSON.name === "string(JSON)"; // true
 
 #### Defined in
 
-[src/guards/TStringJSON/index.ts:16](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TStringJSON/index.ts#L16)
+[src/guards/TStringJSON/index.ts:16](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TStringJSON/index.ts#L16)
 
 ___
 
@@ -343,7 +343,7 @@ TStringJWT.name === "string(JSON)"; // true
 
 #### Defined in
 
-[src/guards/TStringJWT/index.ts:16](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TStringJWT/index.ts#L16)
+[src/guards/TStringJWT/index.ts:16](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TStringJWT/index.ts#L16)
 
 ___
 
@@ -364,7 +364,7 @@ TStringMIMEType.name === "string(MIME type)"; // true
 
 #### Defined in
 
-[src/guards/TStringMIMEType/index.ts:16](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TStringMIMEType/index.ts#L16)
+[src/guards/TStringMIMEType/index.ts:16](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TStringMIMEType/index.ts#L16)
 
 ___
 
@@ -386,7 +386,7 @@ TStringPhoneNumber.name === "string(phone number)"; // true
 
 #### Defined in
 
-[src/guards/TStringPhoneNumber/index.ts:17](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TStringPhoneNumber/index.ts#L17)
+[src/guards/TStringPhoneNumber/index.ts:17](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TStringPhoneNumber/index.ts#L17)
 
 ___
 
@@ -407,7 +407,7 @@ TStringSemVer.name === "string(SemVer)"; // true
 
 #### Defined in
 
-[src/guards/TStringSemVer/index.ts:16](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TStringSemVer/index.ts#L16)
+[src/guards/TStringSemVer/index.ts:16](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TStringSemVer/index.ts#L16)
 
 ___
 
@@ -428,7 +428,7 @@ TStringURL.name === "string(URL)"; // true
 
 #### Defined in
 
-[src/guards/TStringURL/index.ts:16](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TStringURL/index.ts#L16)
+[src/guards/TStringURL/index.ts:16](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TStringURL/index.ts#L16)
 
 ___
 
@@ -452,7 +452,7 @@ TStringUUID.name === "string(UUID)"; // true
 
 #### Defined in
 
-[src/guards/TStringUUID/index.ts:19](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TStringUUID/index.ts#L19)
+[src/guards/TStringUUID/index.ts:19](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TStringUUID/index.ts#L19)
 
 ___
 
@@ -466,7 +466,7 @@ Primitive guard that only accepts `undefined` values.
 
 #### Defined in
 
-[src/guards/TUndefined/index.ts:8](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TUndefined/index.ts#L8)
+[src/guards/TUndefined/index.ts:8](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TUndefined/index.ts#L8)
 
 ## Functions
 
@@ -503,7 +503,7 @@ Accepts a value when it was accepted by all `guardA` and `guardB`, and others.
 
 #### Defined in
 
-[src/guards/TAnd/index.ts:14](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TAnd/index.ts#L14)
+[src/guards/TAnd/index.ts:14](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TAnd/index.ts#L14)
 
 ___
 
@@ -546,7 +546,7 @@ A `Guard` that checks if the given value is an array of the given type.
 
 #### Defined in
 
-[src/guards/TArray/index.ts:24](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TArray/index.ts#L24)
+[src/guards/TArray/index.ts:24](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TArray/index.ts#L24)
 
 ___
 
@@ -589,7 +589,7 @@ A `Guard` which checks if the given value is equals to the `constant` literal.
 
 #### Defined in
 
-[src/guards/TConstant/index.ts:26](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TConstant/index.ts#L26)
+[src/guards/TConstant/index.ts:26](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TConstant/index.ts#L26)
 
 ___
 
@@ -628,7 +628,7 @@ A `Guard` that accepts a value when it was **not** accepted by the given guard.
 
 #### Defined in
 
-[src/guards/TNot/index.ts:21](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TNot/index.ts#L21)
+[src/guards/TNot/index.ts:21](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TNot/index.ts#L21)
 
 ___
 
@@ -676,7 +676,7 @@ A `Guard`.
 
 #### Defined in
 
-[src/guards/TObject/index.ts:31](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TObject/index.ts#L31)
+[src/guards/TObject/index.ts:31](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TObject/index.ts#L31)
 
 ___
 
@@ -734,7 +734,7 @@ Similar in concept as TypeScript's `{[keys: string]: number}` type annotations.
 
 #### Defined in
 
-[src/guards/TObjectOfShape/index.ts:39](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TObjectOfShape/index.ts#L39)
+[src/guards/TObjectOfShape/index.ts:39](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TObjectOfShape/index.ts#L39)
 
 ___
 
@@ -780,7 +780,7 @@ Accepts a value when it was accepted by at least one of the `guards`.
 
 #### Defined in
 
-[src/guards/TOr/index.ts:22](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TOr/index.ts#L22)
+[src/guards/TOr/index.ts:22](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TOr/index.ts#L22)
 
 ___
 
@@ -814,7 +814,7 @@ A `Guard` that accepts only strings that are base64 encoded.
 
 #### Defined in
 
-[src/guards/TStringBase64/index.ts:21](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TStringBase64/index.ts#L21)
+[src/guards/TStringBase64/index.ts:21](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TStringBase64/index.ts#L21)
 
 ___
 
@@ -849,7 +849,7 @@ A `Guard` that accepts only strings that matches the given `regexp`.
 
 #### Defined in
 
-[src/guards/TStringMatch/index.ts:23](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TStringMatch/index.ts#L23)
+[src/guards/TStringMatch/index.ts:23](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TStringMatch/index.ts#L23)
 
 ___
 
@@ -884,7 +884,7 @@ A `Guard` that accepts only strings, that is in the given length range.
 
 #### Defined in
 
-[src/guards/TStringWithLength/index.ts:22](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TStringWithLength/index.ts#L22)
+[src/guards/TStringWithLength/index.ts:22](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TStringWithLength/index.ts#L22)
 
 ___
 
@@ -922,4 +922,4 @@ const TBiggerThan10 = TValidate<number>(
 
 #### Defined in
 
-[src/guards/TValidate/index.ts:22](https://github.com/davidkarolyi/tguard/blob/d84cda9/src/guards/TValidate/index.ts#L22)
+[src/guards/TValidate/index.ts:22](https://github.com/davidkarolyi/tguard/blob/f2e7a9f/src/guards/TValidate/index.ts#L22)