Outdated sublevel-pouchdb dependency should be superceded by subleveldown?

[danielweck]

This issue arised from a separate issue regarding PouchDB + LevelDown on MacOS (which forces developers to pin leveldown to version 5.0.2), see Level/leveldown#686 => as you can see, there are 3 references to the PouchDB issue tracker, as the problem is likely to be located in one of the PouchDB packages. The crash stacktrace includes a reference to sublevel-pouchdb:

Uncaught Exception:
Error: once called more than once
    at /project/node_modules/pouchdb-core/node_modules/pouchdb-utils/lib/index.js:88:13
    at /project/node_modules/argsarray/index.js:14:18
    at /project/node_modules/pouchdb-core/lib/index.js:769:14
    at /project/dist/node_modules/pouchdb-adapter-leveldb-core/lib/index.js:350:18
    at /project/dist/node_modules/argsarray/index.js:14:18
    at /project/dist/node_modules/pouchdb-adapter-leveldb-core/lib/index.js:429:16
    at /project/dist/node_modules/sublevel-pouchdb/lib/index.js:243:9
    at /project/dist/node_modules/sublevel-pouchdb/lib/index.js:74:13

...thus this new issue: the pouchdb-adapter-leveldb-core package currently depends on sublevel-pouchdb. Here is an interesting comment made by @vweevers in the LevelDown project:
Level/leveldown#686 (comment)

sublevel-pouchdb is outdated, as it was forked from level-sublevel which is no longer maintained and is known to have several compatibility issues with latest level* modules. The preferred solution is now subleveldown.

Are the PouchDB project maintainers aware of this?

PS: I must admit not finding direct references to sublevel-pouchdb in the PouchDB package.json:

https://github.com/pouchdb/pouchdb/blob/7.1.1/package.json

...yet my app's package-lock.json clearly references it:

    "pouchdb-adapter-leveldb-core": {
      "version": "7.1.1",
      "resolved": "https://registry.npmjs.org/pouchdb-adapter-leveldb-core/-/pouchdb-adapter-leveldb-core-7.1.1.tgz",
      "integrity": "sha512-+R0cHiqS1fF8QjjqZ02RMj70nbUetl2MvWq3rr1ml1IdGwmR3XfEgvs3zyojmn6WrwpW7Dka89s8FPfP5YG3SA==",
      "requires": {
        "argsarray": "0.0.1",
        "buffer-from": "1.1.0",
        "double-ended-queue": "2.1.0-0",
        "levelup": "4.0.2",
        "pouchdb-adapter-utils": "7.1.1",
        "pouchdb-binary-utils": "7.1.1",
        "pouchdb-collections": "7.1.1",
        "pouchdb-errors": "7.1.1",
        "pouchdb-json": "7.1.1",
        "pouchdb-md5": "7.1.1",
        "pouchdb-merge": "7.1.1",
        "pouchdb-utils": "7.1.1",
        "sublevel-pouchdb": "7.1.1",
        "through2": "3.0.1"
      },
      "dependencies": {
        "abstract-leveldown": {
          "version": "6.0.3",
          "resolved": "https://registry.npmjs.org/abstract-leveldown/-/abstract-leveldown-6.0.3.tgz",
          "integrity": "sha512-jzewKKpZbaYUa6HTThnrl+GrJhzjEAeuc7hTVpZdzg7kupXZFoqQDFwyOwLNbmJKJlmzw8yiipMPkDiuKkT06Q==",
          "requires": {
            "level-concat-iterator": "~2.0.0",
            "xtend": "~4.0.0"
          }
        },
        "deferred-leveldown": {
          "version": "5.0.1",
          "resolved": "https://registry.npmjs.org/deferred-leveldown/-/deferred-leveldown-5.0.1.tgz",
          "integrity": "sha512-BXohsvTedWOLkj2n/TY+yqVlrCWa2Zs8LSxh3uCAgFOru7/pjxKyZAexGa1j83BaKloER4PqUyQ9rGPJLt9bqA==",
          "requires": {
            "abstract-leveldown": "~6.0.0",
            "inherits": "^2.0.3"
          }
        },
        "levelup": {
          "version": "4.0.2",
          "resolved": "https://registry.npmjs.org/levelup/-/levelup-4.0.2.tgz",
          "integrity": "sha512-cx9PmLENwbGA3svWBEbeO2HazpOSOYSXH4VA+ahVpYyurvD+SDSfURl29VBY2qgyk+Vfy2dJd71SBRckj/EZVA==",
          "requires": {
            "deferred-leveldown": "~5.0.0",
            "level-errors": "~2.0.0",
            "level-iterator-stream": "~4.0.0",
            "xtend": "~4.0.0"
          }
        }
      }
    },

...and cat node_modules/sublevel-pouchdb/package.json:

{
  "_from": "sublevel-pouchdb@7.1.1",
  "_id": "sublevel-pouchdb@7.1.1",
  "_inBundle": false,
  "_integrity": "sha512-7egqKyyiTknLzTGcvijpqmLL9qx2unPVze02e/4pTnpSI0G0c0EblLv7jj1Nt7h0/P/5MNCvIr1+dMzgjgvc5Q==",
  "_location": "/sublevel-pouchdb",
  "_phantomChildren": {
    "core-util-is": "1.0.2",
    "isarray": "0.0.1"
  },
  "_requested": {
    "type": "version",
    "registry": true,
    "raw": "sublevel-pouchdb@7.1.1",
    "name": "sublevel-pouchdb",
    "escapedName": "sublevel-pouchdb",
    "rawSpec": "7.1.1",
    "saveSpec": null,
    "fetchSpec": "7.1.1"
  },
  "_requiredBy": [
    "/pouchdb-adapter-leveldb-core"
  ],
  "_resolved": "https://registry.npmjs.org/sublevel-pouchdb/-/sublevel-pouchdb-7.1.1.tgz",
  "_shasum": "46feb7efe0dc3697a7b1b35169699972d54c2328",
  "_spec": "sublevel-pouchdb@7.1.1",
  "_where": "/Volumes/500GB/Code/readium-desktop/node_modules/pouchdb-adapter-leveldb-core",
  "author": {
    "name": "Dale Harvey",
    "email": "dale@arandomurl.com"
  },
  "bugs": {
    "url": "https://github.com/pouchdb/pouchdb/issues"
  },
  "bundleDependencies": false,
  "contributors": [
    {
      "name": "Dominic Tarr",
      "email": "dominic.tarr@gmail.com"
    }
  ],
  "dependencies": {
    "inherits": "2.0.3",
    "level-codec": "9.0.1",
    "ltgt": "2.2.1",
    "readable-stream": "1.0.33"
  },
  "deprecated": false,
  "description": "Fork of level-sublevel with ony the subset of the API that PouchDB uses",
  "files": [
    "lib",
    "dist",
    "tonic-example.js"
  ],
  "homepage": "https://github.com/pouchdb/pouchdb#readme",
  "jsnext:main": "./lib/index.es.js",
  "keywords": [],
  "license": "Apache-2.0",
  "main": "./lib/index.js",
  "module": "./lib/index.es.js",
  "name": "sublevel-pouchdb",
  "repository": {
    "type": "git",
    "url": "git+https://github.com/pouchdb/pouchdb.git"
  },
  "version": "7.1.1"
}

[stale]

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