Updating redis to use typescript and adding the option of a writethrough cache which can be used, by passing a DB and a value to be written + a delay for writes.

packages/backend-core/package.json

@@ -63,6 +63,7 @@
     "@types/koa": "2.0.52",
     "@types/node": "14.18.20",
     "@types/node-fetch": "2.6.1",
+    "@types/pouchdb": "^6.4.0",
     "@types/redlock": "4.0.3",
     "@types/semver": "7.3.7",
     "@types/tar-fs": "2.0.1",

packages/backend-core/redis.js

@@ -1,5 +1,5 @@
 module.exports = {
   Client: require("./src/redis"),
   utils: require("./src/redis/utils"),
-  clients: require("./src/redis/authRedis"),
+  clients: require("./src/redis/init"),
 }

packages/backend-core/src/cache/appMetadata.js

@@ -1,4 +1,4 @@
-const redis = require("../redis/authRedis")
+const redis = require("../redis/init")
 const { doWithDB } = require("../db")
 const { DocumentTypes } = require("../db/constants")
 

packages/backend-core/src/cache/base/index.ts

@@ -0,0 +1,92 @@
+import { getTenantId } from "../../context"
+import redis from "../../redis/init"
+import RedisWrapper from "../../redis"
+
+function generateTenantKey(key: string) {
+  const tenantId = getTenantId()
+  return `${key}:${tenantId}`
+}
+
+export = class BaseCache {
+  client: RedisWrapper | undefined
+
+  constructor(client: RedisWrapper | undefined = undefined) {
+    this.client = client
+  }
+
+  async getClient() {
+    return !this.client ? await redis.getCacheClient() : this.client
+  }
+
+  async keys(pattern: string) {
+    const client = await this.getClient()
+    return client.keys(pattern)
+  }
+
+  /**
+   * Read only from the cache.
+   */
+  async get(key: string, opts = { useTenancy: true }) {
+    key = opts.useTenancy ? generateTenantKey(key) : key
+    const client = await this.getClient()
+    return client.get(key)
+  }
+
+  /**
+   * Write to the cache.
+   */
+  async store(
+    key: string,
+    value: any,
+    ttl: number | null = null,
+    opts = { useTenancy: true }
+  ) {
+    key = opts.useTenancy ? generateTenantKey(key) : key
+    const client = await this.getClient()
+    await client.store(key, value, ttl)
+  }
+
+  /**
+   * Remove from cache.
+   */
+  async delete(key: string, opts = { useTenancy: true }) {
+    key = opts.useTenancy ? generateTenantKey(key) : key
+    const client = await this.getClient()
+    return client.delete(key)
+  }
+
+  /**
+   * Read from the cache. Write to the cache if not exists.
+   */
+  async withCache(
+    key: string,
+    ttl: number,
+    fetchFn: any,
+    opts = { useTenancy: true }
+  ) {
+    const cachedValue = await this.get(key, opts)
+    if (cachedValue) {
+      return cachedValue
+    }
+
+    try {
+      const fetchedValue = await fetchFn()
+
+      await this.store(key, fetchedValue, ttl, opts)
+      return fetchedValue
+    } catch (err) {
+      console.error("Error fetching before cache - ", err)
+      throw err
+    }
+  }
+
+  async bustCache(key: string, opts = { client: null }) {
+    const client = await this.getClient()
+    try {
+      await client.delete(generateTenantKey(key))
+    } catch (err) {
+      console.error("Error busting cache - ", err)
+      throw err
+    }
+  }
+}

packages/backend-core/src/cache/generic.js

@@ -1,5 +1,6 @@
-const redis = require("../redis/authRedis")
+const BaseCache = require("./base")
-const { getTenantId } = require("../context")
+
+const GENERIC = new BaseCache()
 
 exports.CacheKeys = {
   CHECKLIST: "checklist",
@@ -16,67 +17,9 @@ exports.TTL = {
   ONE_DAY: 86400,
 }
 
-function generateTenantKey(key) {
+exports.keys = GENERIC.keys
-  const tenantId = getTenantId()
+exports.get = GENERIC.get
-  return `${key}:${tenantId}`
+exports.store = GENERIC.store
-}
+exports.delete = GENERIC.delete
-
+exports.withCache = GENERIC.withCache
-exports.keys = async pattern => {
+exports.bustCache = GENERIC.bustCache
-  const client = await redis.getCacheClient()
-  return client.keys(pattern)
-}
-
-/**
- * Read only from the cache.
- */
-exports.get = async (key, opts = { useTenancy: true }) => {
-  key = opts.useTenancy ? generateTenantKey(key) : key
-  const client = await redis.getCacheClient()
-  const value = await client.get(key)
-  return value
-}
-
-/**
- * Write to the cache.
- */
-exports.store = async (key, value, ttl, opts = { useTenancy: true }) => {
-  key = opts.useTenancy ? generateTenantKey(key) : key
-  const client = await redis.getCacheClient()
-  await client.store(key, value, ttl)
-}
-
-exports.delete = async (key, opts = { useTenancy: true }) => {
-  key = opts.useTenancy ? generateTenantKey(key) : key
-  const client = await redis.getCacheClient()
-  return client.delete(key)
-}
-
-/**
- * Read from the cache. Write to the cache if not exists.
- */
-exports.withCache = async (key, ttl, fetchFn, opts = { useTenancy: true }) => {
-  const cachedValue = await exports.get(key, opts)
-  if (cachedValue) {
-    return cachedValue
-  }
-
-  try {
-    const fetchedValue = await fetchFn()
-
-    await exports.store(key, fetchedValue, ttl, opts)
-    return fetchedValue
-  } catch (err) {
-    console.error("Error fetching before cache - ", err)
-    throw err
-  }
-}
-
-exports.bustCache = async key => {
-  const client = await redis.getCacheClient()
-  try {
-    await client.delete(generateTenantKey(key))
-  } catch (err) {
-    console.error("Error busting cache - ", err)
-    throw err
-  }
-}

packages/backend-core/src/cache/tests/writethrough.spec.js

@@ -0,0 +1,47 @@
+require("../../../tests/utilities/TestConfiguration")
+const { get, put } = require("../writethrough")
+const { dangerousGetDB } = require("../../db")
+const tk = require("timekeeper")
+
+const START_DATE = Date.now()
+tk.freeze(START_DATE)
+
+const DELAY = 5000
+
+const db = dangerousGetDB("test")
+
+describe("writethrough", () => {
+
+  describe("put", () => {
+    let first
+    it("should be able to store, will go to DB", async () => {
+      const response = await put(db,{ _id: "test", value: 1 }, DELAY)
+      const output = await db.get(response._id)
+      first = output
+      expect(output.value).toBe(1)
+    })
+
+    it("second put shouldn't update DB", async () => {
+      const response = await put(db, { ...first, value: 2 }, DELAY)
+      const output = await db.get(response._id)
+      expect(first._rev).toBe(output._rev)
+      expect(output.value).toBe(1)
+    })
+
+    it("should put it again after delay period", async () => {
+      tk.freeze(START_DATE + DELAY + 1)
+      const response = await put(db, { ...first, value: 3 }, DELAY)
+      const output = await db.get(response._id)
+      expect(response._rev).not.toBe(first._rev)
+      expect(output.value).toBe(3)
+    })
+  })
+
+  describe("get", () => {
+    it("should be able to retrieve", async () => {
+      const response = await get(db, "test")
+      expect(response.value).toBe(3)
+    })
+  })
+})
+

packages/backend-core/src/cache/user.js

@@ -1,4 +1,4 @@
-const redis = require("../redis/authRedis")
+const redis = require("../redis/init")
 const { getTenantId, lookupTenantId, doWithGlobalDB } = require("../tenancy")
 const env = require("../environment")
 const accounts = require("../cloud/accounts")

packages/backend-core/src/cache/writethrough.ts

@@ -0,0 +1,58 @@
+import BaseCache from "./base"
+import { getWritethroughClient } from "../redis/init"
+
+const DEFAULT_WRITE_RATE_MS = 10000
+let CACHE: BaseCache | null = null
+
+interface CacheItem {
+  value: any
+  lastWrite: number
+}
+
+async function getCache() {
+  if (!CACHE) {
+    const client = await getWritethroughClient()
+    CACHE = new BaseCache(client)
+  }
+  return CACHE
+}
+
+function makeCacheItem(value: any, lastWrite: number | null = null): CacheItem {
+  return { value, lastWrite: lastWrite || Date.now() }
+}
+
+exports.put = async (
+  db: PouchDB.Database,
+  value: any,
+  writeRateMs: number = DEFAULT_WRITE_RATE_MS
+) => {
+  const cache = await getCache()
+  const key = value._id
+  let cacheItem: CacheItem | undefined = await cache.get(key)
+  const updateDb = !cacheItem || cacheItem.lastWrite < Date.now() - writeRateMs
+  let output = value
+  if (updateDb) {
+    // value should contain the _id and _rev
+    const response = await db.put(value)
+    output = {
+      ...value,
+      _id: response.id,
+      _rev: response.rev,
+    }
+  }
+  // if we are updating the DB then need to set the lastWrite to now
+  cacheItem = makeCacheItem(value, updateDb ? null : cacheItem?.lastWrite)
+  await cache.store(key, cacheItem)
+  return output
+}
+
+exports.get = async (db: PouchDB.Database, id: string): Promise<any> => {
+  const cache = await getCache()
+  let cacheItem: CacheItem = await cache.get(id)
+  if (!cacheItem) {
+    const value = await db.get(id)
+    cacheItem = makeCacheItem(value)
+    await cache.store(id, cacheItem)
+  }
+  return cacheItem.value
+}

packages/backend-core/src/environment.ts

@@ -16,7 +16,7 @@ if (!LOADED && isDev() && !isTest()) {
   LOADED = true
 }
 
-const env: any = {
+const env = {
   isTest,
   isDev,
   JWT_SECRET: process.env.JWT_SECRET,
@@ -66,6 +66,7 @@ const env: any = {
 for (let [key, value] of Object.entries(env)) {
   // handle the edge case of "0" to disable an environment variable
   if (value === "0") {
+    // @ts-ignore
     env[key] = 0
   }
 }

packages/backend-core/src/pkg/redis.ts

@@ -2,7 +2,7 @@
 // The outer exports can't be used as they now reference dist directly
 import Client from "../redis"
 import utils from "../redis/utils"
-import clients from "../redis/authRedis"
+import clients from "../redis/init"
 
 export = {
   Client,

packages/backend-core/src/redis/index.ts

@@ -1,3 +1,4 @@
+import RedisWrapper from "../redis"
 const env = require("../environment")
 // ioredis mock is all in memory
 const Redis = env.isTest() ? require("ioredis-mock") : require("ioredis")
@@ -6,24 +7,34 @@ const {
   removeDbPrefix,
   getRedisOptions,
   SEPARATOR,
+  SelectableDatabases,
 } = require("./utils")
 
 const RETRY_PERIOD_MS = 2000
 const STARTUP_TIMEOUT_MS = 5000
 const CLUSTERED = false
+const DEFAULT_SELECT_DB = SelectableDatabases.DEFAULT
 
 // for testing just generate the client once
 let CLOSED = false
-let CLIENT = env.isTest() ? new Redis(getRedisOptions()) : null
+let CLIENTS: { [key: number]: any } = {}
 // if in test always connected
-let CONNECTED = !!env.isTest()
+let CONNECTED = env.isTest()
 
-function connectionError(timeout, err) {
+function pickClient(selectDb: number): any {
+  return CLIENTS[selectDb]
+}
+
+function connectionError(
+  selectDb: number,
+  timeout: NodeJS.Timeout,
+  err: Error | string
+) {
   // manually shut down, ignore errors
   if (CLOSED) {
     return
   }
-  CLIENT.disconnect()
+  pickClient(selectDb).disconnect()
   CLOSED = true
   // always clear this on error
   clearTimeout(timeout)
@@ -38,59 +49,69 @@ function connectionError(timeout, err) {
  * Inits the system, will error if unable to connect to redis cluster (may take up to 10 seconds) otherwise
  * will return the ioredis client which will be ready to use.
  */
-function init() {
+function init(selectDb = DEFAULT_SELECT_DB) {
-  let timeout
+  let timeout: NodeJS.Timeout
   CLOSED = false
-  // testing uses a single in memory client
+  let client = pickClient(selectDb)
-  if (env.isTest() || (CLIENT && CONNECTED)) {
+  // already connected, ignore
+  if (client && CONNECTED) {
     return
   }
+  // testing uses a single in memory client
+  if (env.isTest()) {
+    CLIENTS[selectDb] = new Redis(getRedisOptions())
+  }
   // start the timer - only allowed 5 seconds to connect
   timeout = setTimeout(() => {
     if (!CONNECTED) {
-      connectionError(timeout, "Did not successfully connect in timeout")
+      connectionError(
+        selectDb,
+        timeout,
+        "Did not successfully connect in timeout"
+      )
     }
   }, STARTUP_TIMEOUT_MS)
 
   // disconnect any lingering client
-  if (CLIENT) {
+  if (client) {
-    CLIENT.disconnect()
+    client.disconnect()
   }
   const { redisProtocolUrl, opts, host, port } = getRedisOptions(CLUSTERED)
 
   if (CLUSTERED) {
-    CLIENT = new Redis.Cluster([{ host, port }], opts)
+    client = new Redis.Cluster([{ host, port }], opts)
   } else if (redisProtocolUrl) {
-    CLIENT = new Redis(redisProtocolUrl)
+    client = new Redis(redisProtocolUrl)
   } else {
-    CLIENT = new Redis(opts)
+    client = new Redis(opts)
   }
   // attach handlers
-  CLIENT.on("end", err => {
+  client.on("end", (err: Error) => {
-    connectionError(timeout, err)
+    connectionError(selectDb, timeout, err)
   })
-  CLIENT.on("error", err => {
+  client.on("error", (err: Error) => {
-    connectionError(timeout, err)
+    connectionError(selectDb, timeout, err)
   })
-  CLIENT.on("connect", () => {
+  client.on("connect", () => {
     clearTimeout(timeout)
     CONNECTED = true
   })
+  CLIENTS[selectDb] = client
 }
 
-function waitForConnection() {
+function waitForConnection(selectDb: number = DEFAULT_SELECT_DB) {
   return new Promise(resolve => {
-    if (CLIENT == null) {
+    if (pickClient(selectDb) == null) {
       init()
     } else if (CONNECTED) {
-      resolve()
+      resolve("")
       return
     }
     // check if the connection is ready
     const interval = setInterval(() => {
       if (CONNECTED) {
         clearInterval(interval)
-        resolve()
+        resolve("")
       }
     }, 500)
   })
@@ -100,25 +121,26 @@ function waitForConnection() {
  * Utility function, takes a redis stream and converts it to a promisified response -
  * this can only be done with redis streams because they will have an end.
  * @param stream A redis stream, specifically as this type of stream will have an end.
+ * @param client The client to use for further lookups.
  * @return {Promise<object>} The final output of the stream
  */
-function promisifyStream(stream) {
+function promisifyStream(stream: any, client: RedisWrapper) {
   return new Promise((resolve, reject) => {
     const outputKeys = new Set()
-    stream.on("data", keys => {
+    stream.on("data", (keys: string[]) => {
       keys.forEach(key => {
         outputKeys.add(key)
       })
     })
-    stream.on("error", err => {
+    stream.on("error", (err: Error) => {
       reject(err)
     })
     stream.on("end", async () => {
-      const keysArray = Array.from(outputKeys)
+      const keysArray: string[] = Array.from(outputKeys) as string[]
       try {
         let getPromises = []
         for (let key of keysArray) {
-          getPromises.push(CLIENT.get(key))
+          getPromises.push(client.get(key))
         }
         const jsonArray = await Promise.all(getPromises)
         resolve(
@@ -134,48 +156,52 @@ function promisifyStream(stream) {
   })
 }
 
-class RedisWrapper {
+export = class RedisWrapper {
-  constructor(db) {
+  _db: string
+  _select: number
+
+  constructor(db: string, selectDb: number | null = null) {
     this._db = db
+    this._select = selectDb || DEFAULT_SELECT_DB
   }
 
   getClient() {
-    return CLIENT
+    return pickClient(this._select)
   }
 
   async init() {
     CLOSED = false
-    init()
+    init(this._select)
-    await waitForConnection()
+    await waitForConnection(this._select)
     return this
   }
 
   async finish() {
     CLOSED = true
-    CLIENT.disconnect()
+    this.getClient().disconnect()
   }
 
-  async scan(key = "") {
+  async scan(key = ""): Promise<any> {
     const db = this._db
     key = `${db}${SEPARATOR}${key}`
     let stream
     if (CLUSTERED) {
-      let node = CLIENT.nodes("master")
+      let node = this.getClient().nodes("master")
       stream = node[0].scanStream({ match: key + "*", count: 100 })
     } else {
-      stream = CLIENT.scanStream({ match: key + "*", count: 100 })
+      stream = this.getClient().scanStream({ match: key + "*", count: 100 })
     }
-    return promisifyStream(stream)
+    return promisifyStream(stream, this.getClient())
   }
 
-  async keys(pattern) {
+  async keys(pattern: string) {
     const db = this._db
-    return CLIENT.keys(addDbPrefix(db, pattern))
+    return this.getClient().keys(addDbPrefix(db, pattern))
   }
 
-  async get(key) {
+  async get(key: string) {
     const db = this._db
-    let response = await CLIENT.get(addDbPrefix(db, key))
+    let response = await this.getClient().get(addDbPrefix(db, key))
     // overwrite the prefixed key
     if (response != null && response.key) {
       response.key = key
@@ -188,39 +214,37 @@ class RedisWrapper {
     }
   }
 
-  async store(key, value, expirySeconds = null) {
+  async store(key: string, value: any, expirySeconds: number | null = null) {
     const db = this._db
     if (typeof value === "object") {
       value = JSON.stringify(value)
     }
     const prefixedKey = addDbPrefix(db, key)
-    await CLIENT.set(prefixedKey, value)
+    await this.getClient().set(prefixedKey, value)
     if (expirySeconds) {
-      await CLIENT.expire(prefixedKey, expirySeconds)
+      await this.getClient().expire(prefixedKey, expirySeconds)
     }
   }
 
-  async getTTL(key) {
+  async getTTL(key: string) {
     const db = this._db
     const prefixedKey = addDbPrefix(db, key)
-    return CLIENT.ttl(prefixedKey)
+    return this.getClient().ttl(prefixedKey)
   }
 
-  async setExpiry(key, expirySeconds) {
+  async setExpiry(key: string, expirySeconds: number | null) {
     const db = this._db
     const prefixedKey = addDbPrefix(db, key)
-    await CLIENT.expire(prefixedKey, expirySeconds)
+    await this.getClient().expire(prefixedKey, expirySeconds)
   }
 
-  async delete(key) {
+  async delete(key: string) {
     const db = this._db
-    await CLIENT.del(addDbPrefix(db, key))
+    await this.getClient().del(addDbPrefix(db, key))
   }
 
   async clear() {
     let items = await this.scan()
-    await Promise.all(items.map(obj => this.delete(obj.key)))
+    await Promise.all(items.map((obj: any) => this.delete(obj.key)))
   }
 }
-
-module.exports = RedisWrapper

packages/backend-core/src/redis/init.js

@@ -2,7 +2,7 @@ const Client = require("./index")
 const utils = require("./utils")
 const { getRedlock } = require("./redlock")
 
-let userClient, sessionClient, appClient, cacheClient
+let userClient, sessionClient, appClient, cacheClient, writethroughClient
 let migrationsRedlock
 
 // turn retry off so that only one instance can ever hold the lock
@@ -13,6 +13,10 @@ async function init() {
   sessionClient = await new Client(utils.Databases.SESSIONS).init()
   appClient = await new Client(utils.Databases.APP_METADATA).init()
   cacheClient = await new Client(utils.Databases.GENERIC_CACHE).init()
+  writethroughClient = await new Client(
+    utils.Databases.WRITE_THROUGH,
+    utils.SelectableDatabases.WRITE_THROUGH
+  ).init()
   // pass the underlying ioredis client to redlock
   migrationsRedlock = getRedlock(
     cacheClient.getClient(),
@@ -25,6 +29,7 @@ process.on("exit", async () => {
   if (sessionClient) await sessionClient.finish()
   if (appClient) await appClient.finish()
   if (cacheClient) await cacheClient.finish()
+  if (writethroughClient) await writethroughClient.finish()
 })
 
 module.exports = {
@@ -52,6 +57,12 @@ module.exports = {
     }
     return cacheClient
   },
+  getWritethroughClient: async () => {
+    if (!writethroughClient) {
+      await init()
+    }
+    return writethroughClient
+  },
   getMigrationsRedlock: async () => {
     if (!migrationsRedlock) {
       await init()

packages/backend-core/src/redis/utils.js

@@ -19,6 +19,26 @@ exports.Databases = {
   QUERY_VARS: "queryVars",
   LICENSES: "license",
   GENERIC_CACHE: "data_cache",
+  WRITE_THROUGH: "writeThrough",
+}
+
+exports.SelectableDatabases = {
+  DEFAULT: 0,
+  WRITE_THROUGH: 1,
+  UNUSED_1: 2,
+  UNUSED_2: 3,
+  UNUSED_3: 4,
+  UNUSED_4: 5,
+  UNUSED_5: 6,
+  UNUSED_6: 7,
+  UNUSED_7: 8,
+  UNUSED_8: 9,
+  UNUSED_9: 10,
+  UNUSED_10: 11,
+  UNUSED_11: 12,
+  UNUSED_12: 13,
+  UNUSED_13: 14,
+  UNUSED_14: 15,
 }
 
 exports.SEPARATOR = SEPARATOR

packages/backend-core/src/security/sessions.js

@@ -1,4 +1,4 @@
-const redis = require("../redis/authRedis")
+const redis = require("../redis/init")
 const { v4: uuidv4 } = require("uuid")
 
 // a week in seconds

packages/backend-core/src/utils.js

@@ -197,3 +197,7 @@ exports.platformLogout = async ({ ctx, userId, keepActiveSession }) => {
   await events.auth.logout()
   await userCache.invalidateUser(userId)
 }
+
+exports.timeout = timeMs => {
+  return new Promise(resolve => setTimeout(resolve, timeMs))
+}

packages/backend-core/yarn.lock

@@ -291,6 +291,11 @@
   resolved "https://registry.yarnpkg.com/@bcoe/v8-coverage/-/v8-coverage-0.2.3.tgz#75a2e8b51cb758a7553d6804a5932d7aace75c39"
   integrity sha512-0hYQ8SB4Db5zvZB4axdMHGwEaQjkZzFjQiN9LVYvIFB2nSUHW9tYpxWriPrWDASIxiaXax83REcLxuSdnGPZtw==
 
+"@budibase/types@^1.0.209":
+  version "1.0.210"
+  resolved "https://registry.yarnpkg.com/@budibase/types/-/types-1.0.210.tgz#b28f9d7b37d2cbc6b75ae8de201958ccc540cf06"
+  integrity sha512-16foNHGAlJxvh4IpPEPw9eZyIvA2n9nssrNu54Ag73E85A+mIiZ6NGHrw+mojrdC1yaSrj/xeQ461iYXdxT6/g==
+
 "@istanbuljs/load-nyc-config@^1.0.0":
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/@istanbuljs/load-nyc-config/-/load-nyc-config-1.1.0.tgz#fd3db1d59ecf7cf121e80650bb86712f9b55eced"
@@ -656,6 +661,13 @@
     "@types/keygrip" "*"
     "@types/node" "*"
 
+"@types/debug@*":
+  version "4.1.7"
+  resolved "https://registry.yarnpkg.com/@types/debug/-/debug-4.1.7.tgz#7cc0ea761509124709b8b2d1090d8f6c17aadb82"
+  integrity sha512-9AonUzyTjXXhEOa0DnqpzZi6VHlqKMswga9EXjpXnnqxwLtdvPPtlO8evrI5D9S6asFRCQ6v+wpiUKbw+vKqyg==
+  dependencies:
+    "@types/ms" "*"
+
 "@types/express-serve-static-core@^4.17.18":
   version "4.17.28"
   resolved "https://registry.yarnpkg.com/@types/express-serve-static-core/-/express-serve-static-core-4.17.28.tgz#c47def9f34ec81dc6328d0b1b5303d1ec98d86b8"
@@ -762,6 +774,11 @@
   resolved "https://registry.yarnpkg.com/@types/mime/-/mime-1.3.2.tgz#93e25bf9ee75fe0fd80b594bc4feb0e862111b5a"
   integrity sha512-YATxVxgRqNH6nHEIsvg6k2Boc1JHI9ZbH5iWFFv/MTkchz3b1ieGDa5T0a9RznNdI0KhVbdbWSN+KWWrQZRxTw==
 
+"@types/ms@*":
+  version "0.7.31"
+  resolved "https://registry.yarnpkg.com/@types/ms/-/ms-0.7.31.tgz#31b7ca6407128a3d2bbc27fe2d21b345397f6197"
+  integrity sha512-iiUgKzV9AuaEkZqkOLDIvlQiL6ltuZd9tGcW3gwpnX8JbuiuhFlEGmmFXEXkN50Cvq7Os88IY2v0dkDqXYWVgA==
+
 "@types/node-fetch@2.6.1":
   version "2.6.1"
   resolved "https://registry.yarnpkg.com/@types/node-fetch/-/node-fetch-2.6.1.tgz#8f127c50481db65886800ef496f20bbf15518975"
@@ -780,6 +797,152 @@
   resolved "https://registry.yarnpkg.com/@types/node/-/node-14.18.20.tgz#268f028b36eaf51181c3300252f605488c4f0650"
   integrity sha512-Q8KKwm9YqEmUBRsqJ2GWJDtXltBDxTdC4m5vTdXBolu2PeQh8LX+f6BTwU+OuXPu37fLxoN6gidqBmnky36FXA==
 
+"@types/pouchdb-adapter-cordova-sqlite@*":
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/@types/pouchdb-adapter-cordova-sqlite/-/pouchdb-adapter-cordova-sqlite-1.0.1.tgz#49e5ee6df7cc0c23196fcb340f43a560e74eb1d6"
+  integrity sha512-nqlXpW1ho3KBg1mUQvZgH2755y3z/rw4UA7ZJCPMRTHofxGMY8izRVw5rHBL4/7P615or0J2udpRYxgkT3D02g==
+  dependencies:
+    "@types/pouchdb-core" "*"
+
+"@types/pouchdb-adapter-fruitdown@*":
+  version "6.1.3"
+  resolved "https://registry.yarnpkg.com/@types/pouchdb-adapter-fruitdown/-/pouchdb-adapter-fruitdown-6.1.3.tgz#9b140ad9645cc56068728acf08ec19ac0046658e"
+  integrity sha512-Wz1Z1JLOW1hgmFQjqnSkmyyfH7by/iWb4abKn684WMvQfmxx6BxKJpJ4+eulkVPQzzgMMSgU1MpnQOm9FgRkbw==
+  dependencies:
+    "@types/pouchdb-core" "*"
+
+"@types/pouchdb-adapter-http@*":
+  version "6.1.3"
+  resolved "https://registry.yarnpkg.com/@types/pouchdb-adapter-http/-/pouchdb-adapter-http-6.1.3.tgz#6e592d5f48deb6274a21ddac1498dd308096bcf3"
+  integrity sha512-9Z4TLbF/KJWy/D2sWRPBA+RNU0odQimfdvlDX+EY7rGcd3aVoH8qjD/X0Xcd/0dfBH5pKrNIMFFQgW/TylRCmA==
+  dependencies:
+    "@types/pouchdb-core" "*"
+
+"@types/pouchdb-adapter-idb@*":
+  version "6.1.4"
+  resolved "https://registry.yarnpkg.com/@types/pouchdb-adapter-idb/-/pouchdb-adapter-idb-6.1.4.tgz#cb9a18864585d600820cd325f007614c5c3989cd"
+  integrity sha512-KIAXbkF4uYUz0ZwfNEFLtEkK44mEWopAsD76UhucH92XnJloBysav+TjI4FFfYQyTjoW3S1s6V+Z14CUJZ0F6w==
+  dependencies:
+    "@types/pouchdb-core" "*"
+
+"@types/pouchdb-adapter-leveldb@*":
+  version "6.1.3"
+  resolved "https://registry.yarnpkg.com/@types/pouchdb-adapter-leveldb/-/pouchdb-adapter-leveldb-6.1.3.tgz#17c7e75d75b992050bca15991e97fba575c61bb3"
+  integrity sha512-ex8NFqQGFwEpFi7AaZ5YofmuemfZNsL3nTFZBUCAKYMBkazQij1pe2ILLStSvJr0XS0qxgXjCEW19T5Wqiiskg==
+  dependencies:
+    "@types/pouchdb-core" "*"
+
+"@types/pouchdb-adapter-localstorage@*":
+  version "6.1.3"
+  resolved "https://registry.yarnpkg.com/@types/pouchdb-adapter-localstorage/-/pouchdb-adapter-localstorage-6.1.3.tgz#0dde02ba6b9d6073a295a20196563942ba9a54bd"
+  integrity sha512-oor040tye1KKiGLWYtIy7rRT7C2yoyX3Tf6elEJRpjOA7Ja/H8lKc4LaSh9ATbptIcES6MRqZDxtp7ly9hsW3Q==
+  dependencies:
+    "@types/pouchdb-core" "*"
+
+"@types/pouchdb-adapter-memory@*":
+  version "6.1.3"
+  resolved "https://registry.yarnpkg.com/@types/pouchdb-adapter-memory/-/pouchdb-adapter-memory-6.1.3.tgz#9eabdbc890fcf58960ee8b68b8685f837e75c844"
+  integrity sha512-gVbsIMzDzgZYThFVT4eVNsmuZwVm/4jDxP1sjlgc3qtDIxbtBhGgyNfcskwwz9Zu5Lv1avkDsIWvcxQhnvRlHg==
+  dependencies:
+    "@types/pouchdb-core" "*"
+
+"@types/pouchdb-adapter-node-websql@*":
+  version "6.1.3"
+  resolved "https://registry.yarnpkg.com/@types/pouchdb-adapter-node-websql/-/pouchdb-adapter-node-websql-6.1.3.tgz#aa18bc68af8cf509acd12c400010dcd5fab2243d"
+  integrity sha512-F/P+os6Jsa7CgHtH64+Z0HfwIcj0hIRB5z8gNhF7L7dxPWoAfkopK5H2gydrP3sQrlGyN4WInF+UJW/Zu1+FKg==
+  dependencies:
+    "@types/pouchdb-adapter-websql" "*"
+    "@types/pouchdb-core" "*"
+
+"@types/pouchdb-adapter-websql@*":
+  version "6.1.4"
+  resolved "https://registry.yarnpkg.com/@types/pouchdb-adapter-websql/-/pouchdb-adapter-websql-6.1.4.tgz#359fbe42ccac0ac90b492ddb8c32fafd0aa96d79"
+  integrity sha512-zMJQCtXC40hBsIDRn0GhmpeGMK0f9l/OGWfLguvczROzxxcOD7REI+e6SEmX7gJKw5JuMvlfuHzkQwjmvSJbtg==
+  dependencies:
+    "@types/pouchdb-core" "*"
+
+"@types/pouchdb-browser@*":
+  version "6.1.3"
+  resolved "https://registry.yarnpkg.com/@types/pouchdb-browser/-/pouchdb-browser-6.1.3.tgz#8f33d6ef58d6817d1f6d36979148a1c7f63244d8"
+  integrity sha512-EdYowrWxW9SWBMX/rux2eq7dbHi5Zeyzz+FF/IAsgQKnUxgeCO5VO2j4zTzos0SDyJvAQU+EYRc11r7xGn5tvA==
+  dependencies:
+    "@types/pouchdb-adapter-http" "*"
+    "@types/pouchdb-adapter-idb" "*"
+    "@types/pouchdb-adapter-websql" "*"
+    "@types/pouchdb-core" "*"
+    "@types/pouchdb-mapreduce" "*"
+    "@types/pouchdb-replication" "*"
+
+"@types/pouchdb-core@*":
+  version "7.0.10"
+  resolved "https://registry.yarnpkg.com/@types/pouchdb-core/-/pouchdb-core-7.0.10.tgz#d1ea1549e7fad6cb579f71459b1bc27252e06a5a"
+  integrity sha512-mKhjLlWWXyV3PTTjDhzDV1kc2dolO7VYFa75IoKM/hr8Er9eo8RIbS7mJLfC8r/C3p6ihZu9yZs1PWC1LQ0SOA==
+  dependencies:
+    "@types/debug" "*"
+    "@types/pouchdb-find" "*"
+
+"@types/pouchdb-find@*":
+  version "6.3.7"
+  resolved "https://registry.yarnpkg.com/@types/pouchdb-find/-/pouchdb-find-6.3.7.tgz#f713534a53c1a7f3fd8fbbfb74131a1b04711ddc"
+  integrity sha512-b2dr9xoZRK5Mwl8UiRA9l5j9mmCxNfqXuu63H1KZHwJLILjoIIz7BntCvM0hnlnl7Q8P8wORq0IskuaMq5Nnnw==
+  dependencies:
+    "@types/pouchdb-core" "*"
+
+"@types/pouchdb-http@*":
+  version "6.1.3"
+  resolved "https://registry.yarnpkg.com/@types/pouchdb-http/-/pouchdb-http-6.1.3.tgz#09576c0d409da1f8dee34ec5b768415e2472ea52"
+  integrity sha512-0e9E5SqNOyPl/3FnEIbENssB4FlJsNYuOy131nxrZk36S+y1R/6qO7ZVRypWpGTqBWSuVd7gCsq2UDwO/285+w==
+  dependencies:
+    "@types/pouchdb-adapter-http" "*"
+    "@types/pouchdb-core" "*"
+
+"@types/pouchdb-mapreduce@*":
+  version "6.1.7"
+  resolved "https://registry.yarnpkg.com/@types/pouchdb-mapreduce/-/pouchdb-mapreduce-6.1.7.tgz#9ab32d1e0f234f1bf6d1e4c5d7e216e9e23ac0a3"
+  integrity sha512-WzBwm7tmO9QhfRzVaWT4v6JQSS/fG2OoUDrWrhX87rPe2Pn6laPvdK5li6myNRxCoI/l5e8Jd+oYBAFnaiFucA==
+  dependencies:
+    "@types/pouchdb-core" "*"
+
+"@types/pouchdb-node@*":
+  version "6.1.4"
+  resolved "https://registry.yarnpkg.com/@types/pouchdb-node/-/pouchdb-node-6.1.4.tgz#5214c0169fcfd2237d373380bbd65a934feb5dfb"
+  integrity sha512-wnTCH8X1JOPpNOfVhz8HW0AvmdHh6pt40MuRj0jQnK7QEHsHS79WujsKTKSOF8QXtPwpvCNSsI7ut7H7tfxxJQ==
+  dependencies:
+    "@types/pouchdb-adapter-http" "*"
+    "@types/pouchdb-adapter-leveldb" "*"
+    "@types/pouchdb-core" "*"
+    "@types/pouchdb-mapreduce" "*"
+    "@types/pouchdb-replication" "*"
+
+"@types/pouchdb-replication@*":
+  version "6.4.4"
+  resolved "https://registry.yarnpkg.com/@types/pouchdb-replication/-/pouchdb-replication-6.4.4.tgz#743406c90f13a988fa3e346ea74ce40acd170d00"
+  integrity sha512-BsE5LKpjJK4iAf6Fx5kyrMw+33V+Ip7uWldUnU2BYrrvtR+MLD22dcImm7DZN1st2wPPb91i0XEnQzvP0w1C/Q==
+  dependencies:
+    "@types/pouchdb-core" "*"
+    "@types/pouchdb-find" "*"
+
+"@types/pouchdb@^6.4.0":
+  version "6.4.0"
+  resolved "https://registry.yarnpkg.com/@types/pouchdb/-/pouchdb-6.4.0.tgz#f9c41ca64b23029f9bf2eb4bf6956e6431cb79f8"
+  integrity sha512-eGCpX+NXhd5VLJuJMzwe3L79fa9+IDTrAG3CPaf4s/31PD56hOrhDJTSmRELSXuiqXr6+OHzzP0PldSaWsFt7w==
+  dependencies:
+    "@types/pouchdb-adapter-cordova-sqlite" "*"
+    "@types/pouchdb-adapter-fruitdown" "*"
+    "@types/pouchdb-adapter-http" "*"
+    "@types/pouchdb-adapter-idb" "*"
+    "@types/pouchdb-adapter-leveldb" "*"
+    "@types/pouchdb-adapter-localstorage" "*"
+    "@types/pouchdb-adapter-memory" "*"
+    "@types/pouchdb-adapter-node-websql" "*"
+    "@types/pouchdb-adapter-websql" "*"
+    "@types/pouchdb-browser" "*"
+    "@types/pouchdb-core" "*"
+    "@types/pouchdb-http" "*"
+    "@types/pouchdb-mapreduce" "*"
+    "@types/pouchdb-node" "*"
+    "@types/pouchdb-replication" "*"
+
 "@types/prettier@^2.1.5":
   version "2.6.3"
   resolved "https://registry.yarnpkg.com/@types/prettier/-/prettier-2.6.3.tgz#68ada76827b0010d0db071f739314fa429943d0a"