Invalidate outdated cache file (#17100)

sosukesuzuki · web-flow · commit 61c0129ce574 · 2025-02-12T16:32:51.000+09:00
diff --git a/changelog_unreleased/cli/17100.md b/changelog_unreleased/cli/17100.md
@@ -0,0 +1,3 @@
+#### Fix CLI crash when cache for old version exists (#17100 by @sosukesuzuki)
+
+Prettier 3.5 uses a different cache format than previous versions, Prettier stable crashes when reading existing cache file, Prettier main fixed the problem.
diff --git a/src/cli/format-results-cache.js b/src/cli/format-results-cache.js
@@ -1,6 +1,7 @@
 // Inspired by LintResultsCache from ESLint
 // https://github.com/eslint/eslint/blob/c2d0a830754b6099a3325e6d3348c3ba983a677a/lib/cli-engine/lint-result-cache.js
 
+import fs from "node:fs";
 import stringify from "fast-json-stable-stringify";
 import fileEntryCache from "file-entry-cache";
 import { version as prettierVersion } from "../index.js";
@@ -44,10 +45,24 @@ class FormatResultsCache {
   constructor(cacheFileLocation, cacheStrategy) {
     const useChecksum = cacheStrategy === "content";
 
-    this.#fileEntryCache = fileEntryCache.createFromFile(
-      /* filePath */ cacheFileLocation,
-      useChecksum,
-    );
+    try {
+      this.#fileEntryCache = fileEntryCache.createFromFile(
+        /* filePath */ cacheFileLocation,
+        useChecksum,
+      );
+    } catch {
+      // https://github.com/prettier/prettier/issues/17092
+      // If `createFromFile()` fails, it's probably because the format
+      // of cache file changed,it happened when we release v3.5.0
+      if (fs.existsSync(cacheFileLocation)) {
+        fs.unlinkSync(cacheFileLocation);
+        // retry
+        this.#fileEntryCache = fileEntryCache.createFromFile(
+          /* filePath */ cacheFileLocation,
+          useChecksum,
+        );
+      }
+    }
   }
 
   /**

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,3 @@`
	`1`	`+#### Fix CLI crash when cache for old version exists (#17100 by @sosukesuzuki)`
	`2`	`+`
	`3`	`+Prettier 3.5 uses a different cache format than previous versions, Prettier stable crashes when reading existing cache file, Prettier main fixed the problem.`