Use Custom Error Classes for Validation

source/errors.ts

@@ -20,3 +20,43 @@ export class ExponentialBackoffStoppedRetriesError extends Error {
         this.name = 'ExponentialBackoffStoppedRetriesError';
     }
 }
+
+/**
+ * Error thrown when an exponential backoff option is too small
+ */
+export class ExponentialBackoffNumberTooSmallError extends Error {
+    constructor(option: string, value: number, min: number) {
+        super(`Exponential backoff option "${option}" is too small. Must be at least ${min}`);
+        this.name = 'ExponentialBackoffNumberTooSmallError';
+    }
+}
+
+/**
+ * Error thrown when an exponential backoff option is out of bounds
+ */
+export class ExponentialBackoffNumberOutOfBoundsError extends Error {
+    constructor(option: string, value: number, min: number, max: number) {
+        super(`Exponential backoff option "${option}" is out of bounds. Must be between ${min} and ${max}`);
+        this.name = 'ExponentialBackoffNumberOutOfBoundsError';
+    }
+}
+
+/**
+ * Error thrown when an exponential backoff option is an invalid infinite integer
+ */
+export class ExponentialBackoffInvalidInfiniteIntegerError extends Error {
+    constructor(option: string) {
+        super(`Exponential backoff option "${option}" is invalid. Must be a finite number`);
+        this.name = 'ExponentialBackoffInvalidInfiniteIntegerError';
+    }
+}
+
+/**
+ * Error thrown when an exponential backoff option is not an integer
+ */
+export class ExponentialBackoffNonIntegerError extends Error {
+    constructor(option: string) {
+        super(`Exponential backoff option "${option}" is invalid. Must be an integer`);
+        this.name = 'ExponentialBackoffNonIntegerError';
+    }
+}