From 9a277dae3c41d04e6dd6d7b7ab6e0cd060586158 Mon Sep 17 00:00:00 2001
From: Dave Cohen <dcohen18@gmail.com>
Date: Sun, 16 Feb 2020 12:48:14 -0600
Subject: [PATCH] Inline Predicate[] types, simplify array conditional check

---
 source/index.ts | 18 +++++++-----------
 1 file changed, 7 insertions(+), 11 deletions(-)

diff --git a/source/index.ts b/source/index.ts
index 2c354e6..faabc65 100644
--- a/source/index.ts
+++ b/source/index.ts
@@ -373,7 +373,6 @@ is.emptyMap = (value: unknown): value is Map<never, never> => is.map(value) && v
 is.nonEmptyMap = <Key = unknown, Value = unknown>(value: unknown): value is Map<Key, Value> => is.map(value) && value.size > 0;
 
 export type Predicate = (value: unknown) => boolean;
-export type OverloadedPredicate = Predicate | Predicate[];
 
 type ArrayMethod = (fn: (value: unknown, index: number, array: unknown[]) => boolean, thisArg?: unknown) => boolean;
 
@@ -389,14 +388,11 @@ const predicateOnArray = (method: ArrayMethod, predicate: Predicate, values: unk
 	return method.call(values, predicate);
 };
 
-is.any = (predicate: OverloadedPredicate, ...values: unknown[]): boolean => {
-	if (is.array(predicate) === true) {
-		return (predicate as Predicate[]).some((singlePredicate: Predicate) =>
-			predicateOnArray(Array.prototype.some, singlePredicate, values)
-		);
-	}
-
-	return predicateOnArray(Array.prototype.some, predicate as Predicate, values);
+is.any = (predicate: Predicate | Predicate[], ...values: unknown[]): boolean => {
+	const predicates = is.array(predicate) ? predicate : [predicate];
+	return predicates.some(singlePredicate =>
+		predicateOnArray(Array.prototype.some, singlePredicate, values)
+	);
 };
 
 is.all = (predicate: Predicate, ...values: unknown[]): boolean => predicateOnArray(Array.prototype.every, predicate, values);
@@ -536,7 +532,7 @@ interface Assert {
 	inRange: (value: number, range: number | number[]) => asserts value is number;
 
 	// Variadic functions.
-	any: (predicate: OverloadedPredicate, ...values: unknown[]) => void | never;
+	any: (predicate: Predicate | Predicate[], ...values: unknown[]) => void | never;
 	all: (predicate: Predicate, ...values: unknown[]) => void | never;
 }
 
@@ -626,7 +622,7 @@ export const assert: Assert = {
 	inRange: (value: number, range: number | number[]): asserts value is number => assertType(is.inRange(value, range), AssertionTypeDescription.inRange, value),
 
 	// Variadic functions.
-	any: (predicate: OverloadedPredicate, ...values: unknown[]): void | never => assertType(is.any(predicate, ...values), AssertionTypeDescription.any, values),
+	any: (predicate: Predicate | Predicate[], ...values: unknown[]): void | never => assertType(is.any(predicate, ...values), AssertionTypeDescription.any, values),
 	all: (predicate: Predicate, ...values: unknown[]): void | never => assertType(is.all(predicate, ...values), AssertionTypeDescription.all, values)
 };