Merged in feat/common-package (pull request #2333)

feat: Add common package

* Add isEdge, safeTry and dataCache to new common package

* Add eslint and move prettier config

* Fix yarn lock

* Clean up tests

* Add lint-staged config to common

* Add missing dependencies


Approved-by: Joakim Jäderberg

packages/common/dataCache/MemoryCache/InMemoryCache/cacheMap.ts

@@ -0,0 +1,9 @@
+export const cacheMap = new Map<
+  string,
+  {
+    /** Absolute expiration timestamp (`Date.now()`) */
+    expiresAt: number
+    /** The cached data */
+    data: unknown
+  }
+>()

packages/common/dataCache/MemoryCache/InMemoryCache/cacheOrGet.ts

@@ -0,0 +1,48 @@
+import {
+  type CacheOrGetOptions,
+  shouldGetFromCache,
+} from "../../cacheOrGetOptions"
+import { cacheLogger } from "../../logger"
+import { get } from "./get"
+import { set } from "./set"
+
+import type { CacheTime, DataCache } from "../../Cache"
+
+export const cacheOrGet: DataCache["cacheOrGet"] = async <T>(
+  key: string | string[],
+  callback: (overrideTTL?: (cacheTime: CacheTime) => void) => Promise<T>,
+  ttl: CacheTime,
+  opts?: CacheOrGetOptions
+): Promise<T> => {
+  if (Array.isArray(key)) {
+    key = key.join("-")
+  }
+
+  let realTTL = ttl
+  const overrideTTL = function (cacheTime: CacheTime) {
+    realTTL = cacheTime
+  }
+
+  let cached: Awaited<T> | undefined = undefined
+  if (shouldGetFromCache(opts)) {
+    cached = await get(key)
+    if (cached) {
+      return cached
+    }
+
+    cacheLogger.debug(`Miss for key '${key}'`)
+  }
+
+  try {
+    const data = await callback(overrideTTL)
+    await set(key, data, realTTL)
+
+    return data
+  } catch (e) {
+    cacheLogger.error(
+      `Error while fetching data for key '${key}', avoid caching`,
+      e
+    )
+    throw e
+  }
+}

packages/common/dataCache/MemoryCache/InMemoryCache/deleteKey.ts

@@ -0,0 +1,16 @@
+import { cacheLogger } from "../../logger"
+import { cacheMap } from "./cacheMap"
+
+export async function deleteKey(key: string, opts?: { fuzzy?: boolean }) {
+  cacheLogger.debug("Deleting key", key)
+  if (opts?.fuzzy) {
+    cacheMap.forEach((_, k) => {
+      if (k.includes(key)) {
+        cacheMap.delete(k)
+      }
+    })
+    return
+  }
+
+  cacheMap.delete(key)
+}

packages/common/dataCache/MemoryCache/InMemoryCache/get.ts

@@ -0,0 +1,22 @@
+import { cacheLogger } from "../../logger"
+import { cacheMap } from "./cacheMap"
+
+export async function get<T>(key: string): Promise<T | undefined> {
+  const cached = cacheMap.get(key)
+  if (!cached) {
+    return undefined
+  }
+
+  if (cached.expiresAt < Date.now()) {
+    cacheLogger.debug(`Expired for key '${key}'`)
+    cacheMap.delete(key)
+    return undefined
+  }
+  if (cached.data === undefined) {
+    cacheLogger.debug(`Data is undefined for key '${key}'`)
+    cacheMap.delete(key)
+    return undefined
+  }
+
+  return cached.data as T
+}

packages/common/dataCache/MemoryCache/InMemoryCache/index.ts

@@ -0,0 +1,10 @@
+import { cacheOrGet } from "./cacheOrGet"
+import { deleteKey } from "./deleteKey"
+import { get } from "./get"
+import { set } from "./set"
+
+import type { DataCache } from "../../Cache"
+
+export async function createInMemoryCache(): Promise<DataCache> {
+  return { type: "in-memory", cacheOrGet, deleteKey, get, set }
+}

packages/common/dataCache/MemoryCache/InMemoryCache/set.ts

@@ -0,0 +1,13 @@
+import { type CacheTime, getCacheTimeInSeconds } from "../../Cache"
+import { cacheMap } from "./cacheMap"
+
+export async function set<T>(
+  key: string,
+  data: T,
+  ttl: CacheTime
+): Promise<void> {
+  cacheMap.set(key, {
+    data: data,
+    expiresAt: Date.now() + getCacheTimeInSeconds(ttl) * 1000,
+  })
+}