From ef2b8b0884a1ed2dc3c74c1bc34f6e0585bbab15 Mon Sep 17 00:00:00 2001
From: Alice Pote <alice.writes.wrongs@gmail.com>
Date: Mon, 25 Apr 2022 11:08:16 -0400
Subject: [PATCH] fix some typings on those `is${TypeName}` functions

---
 src/utils/helpers.ts | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/utils/helpers.ts b/src/utils/helpers.ts
index 031d272681c..a051897a1d1 100644
--- a/src/utils/helpers.ts
+++ b/src/utils/helpers.ts
@@ -81,13 +81,13 @@ export const pluck = (obj: { [key: string]: any }, keys: string[]) => {
 };
 
 export const isBoolean = (v: any): v is boolean => typeof v === 'boolean';
-export const isDefined = (v: any) => v !== null && v !== undefined;
+export const isDefined = (v: any): v is NonNullable<typeof v> => v !== null && v !== undefined;
 export const isUndefined = (v: any): v is null | undefined => v === null || v === undefined;
 export const isFunction = (v: any): v is Function => typeof v === 'function';
-export const isNumber = (v: any): v is boolean => typeof v === 'number';
+export const isNumber = (v: any): v is number => typeof v === 'number';
 export const isObject = (val: Object): val is Object =>
   val != null && typeof val === 'object' && Array.isArray(val) === false;
 export const isString = (v: any): v is string => typeof v === 'string';
-export const isIterable = (v: any): v is Iterable<any> => isDefined(v) && isFunction(v[Symbol.iterator]);
+export const isIterable = <T>(v: any): v is Iterable<T> => isDefined(v) && isFunction(v[Symbol.iterator]);
 export const isPromise = <T = any>(v: any): v is Promise<T> =>
   !!v && (typeof v === 'object' || typeof v === 'function') && typeof v.then === 'function';