Add Workers cf.originRangeRequests types

src/workerd/api/tests/cf-cache-control-test.js

@@ -139,6 +139,7 @@ export const additionalCacheSettings = {
           stripLastModified: false,
           cacheDeceptionArmor: true,
           cacheReserveMinimumFileSize: 1024,
+          originRangeRequests: 'off',
           vary: {
             default: { action: 'bypass' },
             headers: {
@@ -158,6 +159,7 @@ export const additionalCacheSettings = {
       assert.strictEqual(req.cf.stripLastModified, false);
       assert.strictEqual(req.cf.cacheDeceptionArmor, true);
       assert.strictEqual(req.cf.cacheReserveMinimumFileSize, 1024);
+      assert.strictEqual(req.cf.originRangeRequests, 'off');
       assert.deepStrictEqual(req.cf.vary, {
         default: { action: 'bypass' },
         headers: {

types/defines/cf.d.ts

@@ -36,6 +36,14 @@ interface RequestInitCfProperties extends Record<string, unknown> {
    * (e.g. { '200-299': 86400, '404': 1, '500-599': 0 })
    */
   cacheTtlByStatus?: Record<string, number>;
+  /**
+   * Controls whether Cloudflare uses range requests when fetching the response
+   * from the origin.
+   *
+   * - `"on"`: enable origin range requests for this request.
+   * - `"off"`: disable origin range requests for this request.
+   */
+  originRangeRequests?: "on" | "off";
   /** Controls how responses with a `Vary` header are cached for this request. */
   vary?: RequestInitCfPropertiesVary;
   /**

types/test/types/cf.ts

@@ -22,6 +22,21 @@ export const handler: ExportedHandler<{ SERVICE: Fetcher }> = {
       cf: { cacheEverything: true },
     });
 
+    await fetch("https://example.com", {
+      cf: { originRangeRequests: "on" },
+    });
+
+    await fetch("https://example.com", {
+      cf: { originRangeRequests: "off" },
+    });
+
+    await fetch("https://example.com", {
+      cf: {
+        // @ts-expect-error: default is a Cache Rules value, not a Workers value
+        originRangeRequests: "default",
+      },
+    });
+
     await fetch("https://example.com", {
       cf: {
         vary: {