First pass

index.js

@@ -0,0 +1,62 @@
+const AbstractLevelDOWN = require('abstract-leveldown').AbstractLevelDOWN
+const hyperdb = require('hyperdb')
+const inherits = require('inherits')
+
+const Status = {
+  NEW: 'new',
+  OPENING: 'opening',
+  OPEN: 'open',
+  CLOSING: 'closing',
+  CLOSED: 'closed'
+}
+
+module.exports = HyperDown
+
+function HyperDown (storage, key, opts) {
+  if (!(this instanceof HyperDown)) return new HyperDown(storage, key, opts)
+
+  opts.reduce = opts.reduce || defaultReduce
+  this._db = hyperdb(storage, key, opts)
+  this.status = Status.NEW
+
+  AbstractLevelDOWN.call(this, location)
+}
+inherits(HyperDown, AbstractLevelDOWN)
+
+HyperDown.prototype._open = function (opts, cb) {
+  this.status = Status.OPENING
+  this._db.ready(err => {
+    if (err) return cb(err)
+    this.status = Status.OPEN
+    return cb()
+  })
+}
+
+HyperDown.prototype._get = function (key, opts, cb) {
+  return this._db.get(key, opts, cb)     
+}
+
+HyperDown.prototype._put = function (key, value, opts, cb) {
+  return this._db.put(key, value, cb)
+}
+
+HyperDown.prototype._del = function (key, opts, cb) {
+  return this._db.del(key, cb)
+}
+
+HyperDown.prototype._batch = function (array, opts, cb) {
+  return this._db.batch(array, cb)
+}
+
+HyperDown.prototype._iterator = function (opts) {
+  return this._db.iterator(opts)
+}
+
+HyperDown.prototype.status = function () {
+  return this.status
+}
+
+function defaultReduce (nodes) {
+  if (!nodes || !nodes.length) return null  
+  return nodes[0]
+}

package.json

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+{
+  "name": "hyperdbdown",
+  "version": "1.0.0",
+  "description": "A levelDOWN-compliant backend based on HyperDB",
+  "main": "index.js",
+  "scripts": {
+    "test": "node test/all.js"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/andrewosh/hyperdbDOWN.git"
+  },
+  "keywords": [
+    "leveldown",
+    "hyperdb"
+  ],
+  "author": "Andrew Osheroff <[email protected]>",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/andrewosh/hyperdbDOWN/issues"
+  },
+  "homepage": "https://github.com/andrewosh/hyperdbDOWN#readme",
+  "devDependencies": {
+    "hyperdb": "^2.1.0",
+    "ram": "0.0.3",
+    "standard": "^10.0.3",
+    "tape": "^4.8.0"
+  },
+  "dependencies": {
+    "abstract-leveldown": "^4.0.2",
+    "inherits": "^2.0.3"
+  }
+}

test/all.js

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+const test = require('tape')
+const leveldown = require('..')
+const abstract = require('abstract-leveldown/abstract/get-test')
+
+abstract.all(leveldown, test)