update

ts/core_base/response.ts

@@ -0,0 +1,40 @@
+import * as types from './types.js';
+
+/**
+ * Abstract Core Response class that provides a fetch-like API
+ */
+export abstract class CoreResponse<T = any> implements types.IAbstractResponse<T> {
+  protected consumed = false;
+
+  // Public properties
+  public abstract readonly ok: boolean;
+  public abstract readonly status: number;
+  public abstract readonly statusText: string;
+  public abstract readonly headers: types.AbstractHeaders;
+  public abstract readonly url: string;
+
+  /**
+   * Ensures the body can only be consumed once
+   */
+  protected ensureNotConsumed(): void {
+    if (this.consumed) {
+      throw new Error('Body has already been consumed');
+    }
+    this.consumed = true;
+  }
+
+  /**
+   * Parse response as JSON
+   */
+  abstract json(): Promise<T>;
+
+  /**
+   * Get response as text
+   */
+  abstract text(): Promise<string>;
+
+  /**
+   * Get response as ArrayBuffer
+   */
+  abstract arrayBuffer(): Promise<ArrayBuffer>;
+}