Website Structure

Frontend-Learner/node_modules/@nuxt/nitro-server/dist/runtime/utils/cache-driver.js

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+// @ts-check
+
+import crypto from 'node:crypto'
+import { defineDriver } from 'unstorage'
+import fsDriver from 'unstorage/drivers/fs-lite'
+import lruCache from 'unstorage/drivers/lru-cache'
+
+/**
+ * @param {string} item
+ */
+function normalizeFsKey (item) {
+  const safe = item.replace(/[^\w.-]/g, '_')
+  const prefix = safe.slice(0, 20)
+  const hash = crypto.createHash('sha256').update(item).digest('hex')
+  return `${prefix}-${hash}`
+}
+
+export default defineDriver(
+  /**
+   * @param {{ base?: string }} opts
+   */
+  (opts) => {
+    const fs = fsDriver({ base: opts.base })
+    const lru = lruCache({ max: 1000 })
+
+    return {
+      ...fs, // fall back to file system - only the bottom three methods are used in renderer
+      async setItem (key, value, opts) {
+        await Promise.all([
+          fs.setItem?.(normalizeFsKey(key), value, opts),
+          lru.setItem?.(key, value, opts),
+        ])
+      },
+      async hasItem (key, opts) {
+        return await lru.hasItem(key, opts) || await fs.hasItem(normalizeFsKey(key), opts)
+      },
+      async getItem (key, opts) {
+        return await lru.getItem(key, opts) || await fs.getItem(normalizeFsKey(key), opts)
+      },
+    }
+  },
+)