fix(isEmpty): suport empty array

Author: c18s

src/is-empty.ts

@@ -2,14 +2,12 @@
  * @param value - the value to check
  * @returns `true` if value is empty, else `false`
  */
-export const isEmpty = (value: string | number | Record<string, unknown>): boolean => {
-  if (value === null) {
+export const isEmpty = (value: string | number | unknown[] | Record<string, unknown>): boolean => {
+  if (value === null || value === undefined) {
     return true;
-  } else if (typeof value !== 'number' && value === '') {
+  } else if (typeof value === 'string' && !value.length) {
     return true;
-  } else if (value === 'undefined' || value === undefined) {
-    return true;
-  } else if (value !== null && typeof value === 'object' && !Object.keys(value).length) {
+  } else if (typeof value === 'object' && !Object.keys(value).length) {
     return true;
   } else {
     return false;

src/spec/is-empty.spec.ts

@@ -21,6 +21,11 @@ describe('isEmpty', () => {
     expect(result).toBeTruthy();
   });
 
+  test('empty array is empty', () => {
+    const result = isEmpty([]);
+    expect(result).toBeTruthy();
+  });
+
   test('`foo` is not empty', () => {
     const result = isEmpty('foo');
     expect(result).toBeFalsy();