refactor(project): Fix cache update mechanism

Author: RandomByte

packages/project/lib/build/cache/BuildTaskCache.js

@@ -532,7 +532,7 @@ export default class BuildTaskCache {
 					resourceIndex: resourceIndex.toCacheObject(),
 				});
 			} else {
-				const rootResourceIndex = this.#resourceRequests.getMetadata(parentId);
+				const {resourceIndex: rootResourceIndex} = this.#resourceRequests.getMetadata(parentId);
 				if (!rootResourceIndex) {
 					throw new Error(`Missing root resource index for parent ID ${parentId}`);
 				}

packages/project/lib/build/cache/ProjectBuildCache.js

@@ -182,6 +182,9 @@ export default class ProjectBuildCache {
 				const deltaStageCache = await this.#findStageCache(stageName, [deltaInfo.originalSignature]);
 				if (deltaStageCache) {
 					log.verbose(`Using delta cached stage for task ${taskName} in project ${this.#project.getName()}`);
+
+					// Store current project reader for later use in recordTaskResult
+					this.#currentProjectReader = this.#project.getReader();
 					return {
 						previousStageCache: deltaStageCache,
 						newSignature: deltaInfo.newSignature,
@@ -190,10 +193,12 @@ export default class ProjectBuildCache {
 					};
 				}
 			}
+		} else {
+			// Store current project reader for later use in recordTaskResult
+			this.#currentProjectReader = this.#project.getReader();
+
+			return false; // Task needs to be executed
 		}
-		// No cached stage found, store current project reader for later use in recordTaskResult
-		this.#currentProjectReader = this.#project.getReader();
-		return false; // Task needs to be executed
 	}
 
 	/**

packages/project/lib/build/cache/index/ResourceIndex.js

@@ -205,6 +205,15 @@ export default class ResourceIndex {
 		return await this.#tree.upsertResources(resources);
 	}
 
+	/**
+	 * Removes resources from the index.
+	 *
+	 * @param {Array<string>} resourcePaths - Paths of resources to remove
+	 */
+	async removeResources(resourcePaths) {
+		return await this.#tree.removeResources(resourcePaths);
+	}
+
 	/**
 	 * Computes the signature hash for this resource index.
 	 *