Fixes #3569

Author: zachleat

src/TemplateConfig.js

@@ -96,6 +96,9 @@ class TemplateConfig {
 		this.userConfig.events.on("eleventy#templateModified", (inputPath, metadata = {}) => {
 			// Might support multiple at some point
 			this.setPreviousBuildModifiedFile(inputPath, metadata);
+
+			// Issue #3569, set that this file exists in the cache
+			this.#existsCache.set(inputPath, true);
 		});
 	}
 

src/Util/ExistsCache.js

@@ -1,4 +1,5 @@
 import fs from "node:fs";
+import { TemplatePath } from "@11ty/eleventy-utils";
 
 // Checks both files and directories
 class ExistsCache {
@@ -17,6 +18,13 @@ class ExistsCache {
 		return this.#exists.has(path);
 	}
 
+	set(path, isExist) {
+		this.#exists.set(TemplatePath.addLeadingDotSlash(path), Boolean(isExist));
+	}
+
+	// Not yet needed
+	// setDirectory(path, isExist) {}
+
 	// Relative paths (to root directory) expected (but not enforced due to perf costs)
 	exists(path) {
 		if (!this.#exists.has(path)) {