diff --git a/.gitattributes b/.gitattributes
index 391f0a4..6313b56 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,2 +1 @@
-* text=auto
-*.js text eol=lf
+* text=auto eol=lf
diff --git a/package.json b/package.json
index 0739cbc..3dec915 100644
--- a/package.json
+++ b/package.json
@@ -65,6 +65,7 @@
 		"nyc": "^13.1.0",
 		"tslint": "^5.12.0",
 		"tslint-xo": "^0.16.0",
+		"type-fest": "^0.3.0",
 		"typedoc": "^0.14.2",
 		"typescript": "^3.3.1",
 		"vali-date": "^1.0.0",
diff --git a/source/predicates.ts b/source/predicates.ts
index f116de1..706b337 100644
--- a/source/predicates.ts
+++ b/source/predicates.ts
@@ -1,3 +1,4 @@
+import {TypedArray} from 'type-fest';
 import {StringPredicate} from './predicates/string';
 import {NumberPredicate} from './predicates/number';
 import {BooleanPredicate} from './predicates/boolean';
@@ -13,8 +14,6 @@ import {WeakSetPredicate} from './predicates/weak-set';
 import {BasePredicate} from './predicates/base-predicate';
 import {AnyPredicate} from './predicates/any';
 
-type TypedArray = Int8Array | Uint8Array | Uint8ClampedArray | Int16Array | Uint16Array | Int32Array | Uint32Array | Float32Array | Float64Array;
-
 export interface Predicates {
 	/**
 	 * Test the value to be a string.