fix(modal): height calc error #161

src/utils/is.ts

@@ -4,17 +4,33 @@ export function is(val: unknown, type: string) {
   return toString.call(val) === `[object ${type}]`;
 }
 
-export const isDef = <T = unknown>(val?: T): val is T => {
+export function isDef<T = unknown>(val?: T): val is T {
   return typeof val !== 'undefined';
-};
+}
 
-export const isUnDef = <T = unknown>(val?: T): val is T => {
+export function isUnDef<T = unknown>(val?: T): val is T {
   return !isDef(val);
-};
+}
 
-export const isObject = (val: any): val is Record<any, any> => {
+export function isObject(val: any): val is Record<any, any> {
   return val !== null && is(val, 'Object');
-};
+}
+
+export function isEmpty<T = unknown>(val: T): val is T {
+  if (isArray(val) || isString(val)) {
+    return val.length === 0;
+  }
+
+  if (val instanceof Map || val instanceof Set) {
+    return val.size === 0;
+  }
+
+  if (isObject(val)) {
+    return Object.keys(val).length === 0;
+  }
+
+  return false;
+}
 
 export function isDate(val: unknown): val is Date {
   return is(val, 'Date');
@@ -40,7 +56,9 @@ export function isString(val: unknown): val is string {
   return is(val, 'String');
 }
 
-export const isFunction = (val: unknown): val is Function => typeof val === 'function';
+export function isFunction(val: unknown): val is Function {
+  return typeof val === 'function';
+}
 
 export function isBoolean(val: unknown): val is boolean {
   return is(val, 'Boolean');
@@ -54,13 +72,13 @@ export function isArray(val: any): val is Array<any> {
   return val && Array.isArray(val);
 }
 
-export const isWindow = (val: any): val is Window => {
+export function isWindow(val: any): val is Window {
   return typeof window !== 'undefined' && is(val, 'Window');
-};
+}
 
-export const isElement = (val: unknown): val is Element => {
+export function isElement(val: unknown): val is Element {
   return isObject(val) && !!val.tagName;
-};
+}
 
 export const isServer = typeof window === 'undefined';
 
@@ -70,17 +88,17 @@ export function isImageDom(o: Element) {
   return o && ['IMAGE', 'IMG'].includes(o.tagName);
 }
 
-export const isTextarea = (element: Element | null): element is HTMLTextAreaElement => {
+export function isTextarea(element: Element | null): element is HTMLTextAreaElement {
   return element !== null && element.tagName.toLowerCase() === 'textarea';
-};
+}
 
-export const isMobile = (): boolean => {
+export function isMobile(): boolean {
   return !!navigator.userAgent.match(
     /(phone|pad|pod|iPhone|iPod|ios|iPad|Android|Mobile|BlackBerry|IEMobile|MQQBrowser|JUC|Fennec|wOSBrowser|BrowserNG|WebOS|Symbian|Windows Phone)/i
   );
-};
+}
 
-export const isUrl = (path: string): boolean => {
+export function isUrl(path: string): boolean {
   const reg = /(((^https?:(?:\/\/)?)(?:[-;:&=\+\$,\w]+@)?[A-Za-z0-9.-]+(?::\d+)?|(?:www.|[-;:&=\+\$,\w]+@)[A-Za-z0-9.-]+)((?:\/[\+~%\/.\w-_]*)?\??(?:[-\+=&;%@.\w_]*)#?(?:[\w]*))?)$/;
   return reg.test(path);
-};
+}