chore(gatsby): Convert cache.js to TypeScript

jest-transformer.js

@@ -1,2 +1,11 @@
 const babelPreset = require(`babel-preset-gatsby-package`)()
-module.exports = require(`babel-jest`).createTransformer(babelPreset)
+module.exports = require(`babel-jest`).createTransformer({
+  ...babelPreset,
+  overrides: [
+    ...(babelPreset.overrides || []),
+    {
+      test: `**/*.ts`,
+      plugins: [[`@babel/plugin-transform-typescript`, { isTSX: true }]],
+    },
+  ],
+})

jest.config.js

@@ -34,8 +34,7 @@ module.exports = {
     `__tests__/fixtures`,
   ],
   transform: {
-    "^.+\\.js$": `<rootDir>/jest-transformer.js`,
-    "^.+\\.tsx?$": `<rootDir>/node_modules/ts-jest/preprocessor.js`,
+    "^.+\\.[jt]sx?$": `<rootDir>/jest-transformer.js`,
   },
   moduleNameMapper: {
     "^highlight.js$": `<rootDir>/node_modules/highlight.js/lib/index.js`,

package.json

@@ -5,7 +5,9 @@
     "@babel/plugin-transform-typescript": "^7.7.4",
     "@babel/runtime": "^7.7.7",
     "@lerna/prompt": "3.18.5",
+    "@types/cache-manager": "^2.10.1",
     "@types/express": "^4.17.2",
+    "@types/fs-extra": "^8.0.1",
     "@types/got": "^9.6.9",
     "@types/jest": "^24.0.23",
     "@types/node": "^12.12.11",

packages/gatsby/src/utils/__tests__/cache.js

@@ -21,7 +21,7 @@ jest.mock(`fs-extra`, () => {
     ensureDirSync: jest.fn(),
   }
 })
-const Cache = require(`../cache`)
+const Cache = require(`../cache`).default
 const fs = require(`fs-extra`)
 const manager = require(`cache-manager`)
 

packages/gatsby/src/utils/cache.ts

@@ -0,0 +1,75 @@
+import manager, { Store, StoreConfig, CachingConfig } from "cache-manager"
+import fs from "fs-extra"
+import fsStore from "cache-manager-fs-hash"
+import path from "path"
+
+const MAX_CACHE_SIZE = 250
+const TTL = Number.MAX_SAFE_INTEGER
+
+interface ICacheProperties {
+  name?: string
+  store?: Store
+}
+
+export default class Cache {
+  public name: string
+  public store: Store
+  public cache?: manager.Cache
+
+  constructor({ name = `db`, store = fsStore }: ICacheProperties = {}) {
+    this.name = name
+    this.store = store
+  }
+
+  get directory(): string {
+    return path.join(process.cwd(), `.cache/caches/${this.name}`)
+  }
+
+  init(): Cache {
+    fs.ensureDirSync(this.directory)
+
+    const configs: StoreConfig[] = [
+      {
+        store: `memory`,
+        max: MAX_CACHE_SIZE,
+        ttl: TTL,
+      },
+      {
+        store: this.store,
+        ttl: TTL,
+        options: {
+          path: this.directory,
+          ttl: TTL,
+        },
+      },
+    ]
+
+    const caches = configs.map(cache => manager.caching(cache))
+
+    this.cache = manager.multiCaching(caches)
+
+    return this
+  }
+
+  get<T = unknown>(key): Promise<T | undefined> {
+    return new Promise(resolve => {
+      // eslint-disable-next-line no-unused-expressions
+      this.cache?.get<T>(key, (err, res) => {
+        resolve(err ? undefined : res)
+      })
+    })
+  }
+
+  set<T>(
+    key: string,
+    value: T,
+    args: CachingConfig = { ttl: TTL }
+  ): Promise<T | undefined> {
+    return new Promise(resolve => {
+      // eslint-disable-next-line no-unused-expressions
+      this.cache?.set(key, value, args, err => {
+        resolve(err ? undefined : value)
+      })
+    })
+  }
+}

packages/gatsby/src/utils/get-cache.js

@@ -1,6 +1,6 @@
-const Cache = require(`./cache`)
+const Cache = require(`./cache`).default
 
-let caches = new Map()
+const caches = new Map()
 
 module.exports = function getCache(name) {
   let cache = caches.get(name)

tsconfig.json

@@ -1,5 +1,8 @@
 {
   "compilerOptions": {
+    "target": "ESNext",
+    "lib": ["ES2015"],
+    "moduleResolution": "node",
     "noUnusedLocals": true,
     "noUnusedParameters": true,
     "noImplicitReturns": true,

yarn.lock

@@ -3789,6 +3789,11 @@
     "@types/connect" "*"
     "@types/node" "*"
 
+"@types/cache-manager@^2.10.1":
+  version "2.10.1"
+  resolved "https://registry.yarnpkg.com/@types/cache-manager/-/cache-manager-2.10.1.tgz#c7bc354be7988659e139e10fc7bde4b221f7f128"
+  integrity sha512-oJhVIOeC8dX9RZ7OtEZvZ/6cHF5aQWoRcuJ7KwK3Xb69hIIdElpWzfJ35fOXvYOgoyRXA34jFrD8lqEjDWz37w==
+
 "@types/color-name@^1.1.1":
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/@types/color-name/-/color-name-1.1.1.tgz#1c1261bbeaa10a8055bbc5d8ab84b7b2afc846a0"
@@ -3839,6 +3844,13 @@
     "@types/express-serve-static-core" "*"
     "@types/serve-static" "*"
 
+"@types/fs-extra@^8.0.1":
+  version "8.0.1"
+  resolved "https://registry.yarnpkg.com/@types/fs-extra/-/fs-extra-8.0.1.tgz#a2378d6e7e8afea1564e44aafa2e207dadf77686"
+  integrity sha512-J00cVDALmi/hJOYsunyT52Hva5TnJeKP5yd1r+mH/ZU0mbYZflR0Z5kw5kITtKTRYMhm1JMClOFYdHnQszEvqw==
+  dependencies:
+    "@types/node" "*"
+
 "@types/get-port@^0.0.4":
   version "0.0.4"
   resolved "https://registry.yarnpkg.com/@types/get-port/-/get-port-0.0.4.tgz#eb6bb7423d9f888b632660dc7d2fd3e69a35643e"