Workers Assets metafiles in asset-worker (#8279)

* Tidy up response status codes

* Update tsconfig for workers-shared

* Move rules engine to workers-shared

* Run asset-worker tests in workerd

* Refactor asset-worker in preparation of metafiles

* Headers support in asset-worker

* Redirects support in asset-worker

* Add changeset for headers and redirects in asset-worker

* PR feedback

Author: GregBrimble

.changeset/wild-mails-end.md

@@ -0,0 +1,5 @@
+---
+"@cloudflare/workers-shared": minor
+---
+
+Add support for custom headers and redirects in asset-worker

fixtures/asset-config/html-handling.test.ts

@@ -17,6 +17,7 @@ const existsMock = (fileList: Set<string>) => {
 			if (fileList.has(pathname)) {
 				return pathname;
 			}
+			return null;
 		}
 	);
 };

fixtures/asset-config/redirects.test.ts

@@ -15,6 +15,7 @@ const existsMock = (fileList: Set<string>) => {
 			if (fileList.has(pathname)) {
 				return pathname;
 			}
+			return null;
 		}
 	);
 };

fixtures/asset-config/tsconfig.json

@@ -1,15 +1,11 @@
 {
+	"extends": "@cloudflare/workers-tsconfig/tsconfig.json",
 	"compilerOptions": {
-		"target": "ES2020",
-		"module": "ES2020",
-		"lib": ["ES2020"],
 		"types": [
 			"@cloudflare/workers-types/experimental",
 			"@cloudflare/vitest-pool-workers"
 		],
-		"moduleResolution": "bundler",
-		"noEmit": true,
-		"skipLibCheck": true
+		"moduleResolution": "bundler"
 	},
 	"include": ["**/*.ts"]
 }

fixtures/asset-config/url-normalization.test.ts

@@ -15,6 +15,7 @@ const existsMock = (fileList: Set<string>) => {
 			if (fileList.has(pathname)) {
 				return pathname;
 			}
+			return null;
 		}
 	);
 };

packages/pages-shared/asset-server/handler.ts

@@ -1,3 +1,7 @@
+import {
+	generateRulesMatcher,
+	replacer,
+} from "@cloudflare/workers-shared/asset-worker/src/utils/rules-engine";
 import {
 	FoundResponse,
 	InternalServerErrorResponse,
@@ -11,7 +15,6 @@ import {
 	SeeOtherResponse,
 	TemporaryRedirectResponse,
 } from "./responses";
-import { generateRulesMatcher, replacer } from "./rulesEngine";
 import type {
 	Metadata,
 	MetadataHeadersEntries,

packages/pages-shared/package.json

@@ -19,6 +19,7 @@
 		"test:ci": "vitest run"
 	},
 	"dependencies": {
+		"@cloudflare/workers-shared": "workspace:*",
 		"miniflare": "workspace:*"
 	},
 	"devDependencies": {

packages/workers-shared/asset-worker/src/configuration.ts

@@ -8,6 +8,15 @@ export const applyConfigurationDefaults = (
 		compatibility_flags: configuration?.compatibility_flags ?? [],
 		html_handling: configuration?.html_handling ?? "auto-trailing-slash",
 		not_found_handling: configuration?.not_found_handling ?? "none",
+		redirects: configuration?.redirects ?? {
+			version: 1,
+			staticRules: {},
+			rules: {},
+		},
+		headers: configuration?.headers ?? {
+			version: 2,
+			rules: {},
+		},
 		account_id: configuration?.account_id ?? -1,
 		script_id: configuration?.script_id ?? -1,
 	};