Added reset to resolvable.ts

src/helpers/resolvable.ts

@@ -13,8 +13,13 @@ class FetchOnce<T, U extends Array<unknown>> {
 
 	constructor(protected fetchMethod?: (...args: U) => Promise<T>) {  }
 
+	public reset(): void {
+		this.data = undefined;
+		this.error = undefined;
+		this.state = ResolvableState.WAITING;
+	}
+
 	public resolve(...args: U): Promise<T> {
-		// eslint-disable-next-line promise/avoid-new
 		return new Promise((resolve, reject) => {
 			switch (this.state) {
 				case ResolvableState.WAITING:
@@ -76,4 +81,9 @@ export class WaitForSync<T> extends FetchOnce<T, never> {
 			this.parsePromise((async () => { throw error; })());
 		}
 	}
+
+	public reset(): void {
+		super.reset();
+		this.state = ResolvableState.PENDING;
+	}
 }