Initial system import

node_modules/classic-level/chained-batch.js

@@ -0,0 +1,36 @@
+'use strict'
+
+const { AbstractChainedBatch } = require('abstract-level')
+const binding = require('./binding')
+
+const kContext = Symbol('context')
+
+class ChainedBatch extends AbstractChainedBatch {
+  constructor (db, context) {
+    super(db)
+    this[kContext] = binding.batch_init(context)
+  }
+
+  _put (key, value) {
+    binding.batch_put(this[kContext], key, value)
+  }
+
+  _del (key) {
+    binding.batch_del(this[kContext], key)
+  }
+
+  _clear () {
+    binding.batch_clear(this[kContext])
+  }
+
+  _write (options, callback) {
+    binding.batch_write(this[kContext], options, callback)
+  }
+
+  _close (callback) {
+    // TODO: close native batch (currently done on GC)
+    process.nextTick(callback)
+  }
+}
+
+exports.ChainedBatch = ChainedBatch