refactor: switch to local custom LRUCache

package.json

@@ -162,7 +162,6 @@
     "gray-matter": "^4.0.3",
     "lint-staged": "^15.2.0",
     "lodash.template": "^4.5.0",
-    "lru-cache": "^10.1.0",
     "markdown-it": "^14.0.0",
     "markdown-it-anchor": "^8.6.7",
     "markdown-it-attrs": "^4.1.6",

pnpm-lock.yaml

@@ -1,9 +1,5 @@
 lockfileVersion: '6.0'
 
-settings:
-  autoInstallPeers: false
-  excludeLinksFromLockfile: false
-
 overrides:
   ora>string-width: ^5
 
@@ -186,9 +182,6 @@ importers:
       lodash.template:
         specifier: ^4.5.0
         version: 4.5.0
-      lru-cache:
-        specifier: ^10.1.0
-        version: 10.1.0
       markdown-it:
         specifier: ^14.0.0
         version: 14.0.0
@@ -4758,3 +4751,7 @@ packages:
     resolution: {integrity: sha512-9bnSc/HEW2uRy67wc+T8UwauLuPJVn28jb+GtJY16iiKWyvmYJRXVT4UamsAEGQfPohgr2q4Tq0sQbQlxTfi1g==}
     engines: {node: '>=12.20'}
     dev: true
+
+settings:
+  autoInstallPeers: false
+  excludeLinksFromLockfile: false

src/client/theme-default/components/VPLocalSearchBox.vue

@@ -29,7 +29,7 @@ import {
 import type { ModalTranslations } from '../../../../types/local-search'
 import { pathToFile } from '../../app/utils'
 import { useData } from '../composables/data'
-import { LRUCache } from '../support/lru'
+import { LRUCache } from '../../shared'
 import { createSearchTranslate } from '../support/translation'
 
 const emit = defineEmits<{

src/client/theme-default/support/lru.ts

@@ -1,37 +0,0 @@
-// adapted from https://stackoverflow.com/a/46432113/11613622
-
-export class LRUCache<K, V> {
-  private max: number
-  private cache: Map<K, V>
-
-  constructor(max: number = 10) {
-    this.max = max
-    this.cache = new Map<K, V>()
-  }
-
-  get(key: K): V | undefined {
-    let item = this.cache.get(key)
-    if (item !== undefined) {
-      // refresh key
-      this.cache.delete(key)
-      this.cache.set(key, item)
-    }
-    return item
-  }
-
-  set(key: K, val: V): void {
-    // refresh key
-    if (this.cache.has(key)) this.cache.delete(key)
-    // evict oldest
-    else if (this.cache.size === this.max) this.cache.delete(this.first()!)
-    this.cache.set(key, val)
-  }
-
-  first(): K | undefined {
-    return this.cache.keys().next().value
-  }
-
-  clear(): void {
-    this.cache.clear()
-  }
-}

src/node/markdownToVue.ts

@@ -1,7 +1,6 @@
 import { resolveTitleFromToken } from '@mdit-vue/shared'
 import _debug from 'debug'
 import fs from 'fs-extra'
-import { LRUCache } from 'lru-cache'
 import path from 'path'
 import type { SiteConfig } from './config'
 import {
@@ -12,6 +11,7 @@ import {
 import {
   EXTERNAL_URL_RE,
   slash,
+  LRUCache,
   type HeadConfig,
   type MarkdownEnv,
   type PageData
@@ -20,7 +20,7 @@ import { getGitTimestamp } from './utils/getGitTimestamp'
 import { processIncludes } from './utils/processIncludes'
 
 const debug = _debug('vitepress:md')
-const cache = new LRUCache<string, MarkdownCompileResult>({ max: 1024 })
+const cache = new LRUCache<string, MarkdownCompileResult>(1024)
 
 export interface MarkdownCompileResult {
   vueSrc: string

src/shared/shared.ts

@@ -174,3 +174,58 @@ export function sanitizeFileName(name: string): string {
 export function slash(p: string): string {
   return p.replace(/\\/g, '/')
 }
+
+// adapted from https://stackoverflow.com/a/46432113/11613622
+
+export class LRUCache<K, V> {
+  private max: number
+  private cache: Map<K, V>
+
+  constructor(max: number = 10) {
+    this.max = max
+    this.cache = new Map<K, V>()
+  }
+
+  get(key: K): V | undefined {
+    let item = this.cache.get(key)
+    if (item !== undefined) {
+      // refresh key
+      this.cache.delete(key)
+      this.cache.set(key, item)
+    }
+    return item
+  }
+
+  set(key: K, val: V): void {
+    // refresh key
+    if (this.cache.has(key)) this.cache.delete(key)
+    // evict oldest
+    else if (this.cache.size === this.max) this.cache.delete(this.first()!)
+    this.cache.set(key, val)
+  }
+
+  first(): K | undefined {
+    return this.cache.keys().next().value
+  }
+
+  find(fn: (v: V, k: K, self: LRUCache<K, V>) => boolean): V | undefined {
+    for (const [key, value] of this.cache.entries()) {
+      if (fn(value, key, this)) {
+        return value
+      }
+    }
+    return undefined
+  }
+
+  delete(key: K): boolean {
+    if (this.cache.has(key)) {
+      const deleted = this.cache.delete(key)
+      return deleted
+    }
+    return false
+  }
+
+  clear(): void {
+    this.cache.clear()
+  }
+}