feat(Promise): added defaultResult parameter to tryCatch

Author: alisahinozcelik

src/promise/proto/try-catch.ts

@@ -24,11 +24,12 @@ declare global {
      *
      * ```
      * * * *
+     * @param defaultResult Setting this will put the value into the result field when the promise throws error
      */
-    tryCatch<E = any>(): Promise<[E, T]>;
+    tryCatch<E = any>(defaultResult?: T): Promise<[E, T]>;
   }
 }
 
-Promise.prototype.tryCatch = function<T, E>(this: Promise<T>): Promise<[E, T]> {
-  return tryCatch<T, E>(this);
+Promise.prototype.tryCatch = function<T, E>(this: Promise<T>, defaultResult: T = null): Promise<[E, T]> {
+  return tryCatch<T, E>(this, defaultResult);
 };

src/promise/try-catch.ts

@@ -38,13 +38,14 @@
  * ```
  * * * *
  * @param promise Promise to try
+ * @param defaultResult Setting this will put the value into the result field when the promise throws error
  * @returns Error and result array
  */
-export async function tryCatch<T, E = any>(promise: Promise<T>): Promise<[E, T]> {
+export async function tryCatch<T, E = any>(promise: Promise<T>, defaultResult: T = null): Promise<[E, T]> {
   try {
     const result = await promise;
     return [null, result];
   } catch (error) {
-    return [error, null];
+    return [error, defaultResult];
   }
 }