feat: add yup number strip empty string method

src/helpers/extend-yup.ts

@@ -1,4 +1,4 @@
-import { string, addMethod } from 'yup';
+import { string, number, addMethod } from 'yup';
 
 /**
  * ExtendYupValidation
@@ -8,6 +8,9 @@ function ExtendYupValidation(): void {
   addMethod(string, 'stripEmptyString', function () {
     return this.transform((value: string) => (value === '' ? null : value));
   });
+  addMethod(number, 'stripEmptyString', function () {
+    return this.transform((__, value: string) => (value === '' ? null : value));
+  });
 }
 
 export default ExtendYupValidation;

typings/yup.d.ts

@@ -1,8 +1,12 @@
 /* eslint-disable @typescript-eslint/naming-convention */
-import type { StringSchema as BaseStringSchema } from 'yup';
+import type { StringSchema as BaseStringSchema, NumberSchema as BaseNumberSchema } from 'yup';
 
 declare module 'yup' {
   interface StringSchema {
     stripEmptyString(): BaseStringSchema;
   }
+
+  interface NumberSchema {
+    stripEmptyString(): BaseNumberSchema;
+  }
 }