add clearDiskCache API

main/preload.ts

@@ -12,7 +12,7 @@ import { logError } from './utils/logging';
 import { ElectronFile } from './types';
 import { getEncryptionKey, setEncryptionKey } from './utils/safeStorage';
 import { clearElectronStore } from './utils/electronStore';
-import { openLocalCache } from './utils/cache';
+import { openDiskCache, clearDiskCache } from './utils/cache';
 
 // Patch the global WebSocket constructor to use the correct DevServer url
 const fixHotReloadNext12 = () => {
@@ -194,5 +194,6 @@ windowObject['ElectronAPIs'] = {
     getEncryptionKey,
     setEncryptionKey,
     clearElectronStore,
-    openLocalCache,
+    openDiskCache,
+    clearDiskCache,
 };

main/utils/cache.ts

@@ -1,6 +1,6 @@
 import { ipcRenderer } from 'electron/renderer';
 import path from 'path';
-import { readFile, writeFile, existsSync, mkdir } from 'promise-fs';
+import { readFile, writeFile, existsSync, mkdir, rmSync } from 'promise-fs';
 import crypto from 'crypto';
 import DiskLRUService from './diskLRU';
 
@@ -12,7 +12,7 @@ const getCacheDir = async () => {
     return path.join(systemCacheDir, CACHE_DIR);
 };
 
-export async function openLocalCache(cacheName: string) {
+export async function openDiskCache(cacheName: string) {
     const cacheDir = await getCacheDir();
     const cacheBucketDir = path.join(cacheDir, cacheName);
     if (!existsSync(cacheBucketDir)) {
@@ -21,6 +21,11 @@ export async function openLocalCache(cacheName: string) {
     return new DiskCache(cacheBucketDir);
 }
 
+export async function clearDiskCache() {
+    const cacheDir = await getCacheDir();
+    rmSync(cacheDir, { recursive: true, force: true });
+}
+
 class DiskCache {
     constructor(private cacheBucketDir: string) {}