Use restify

src/utils.js

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+var low = require('low') 
+var _ = require('underscore')
+_.mixin(require('underscore.inflections'))
+
+
+// Turns string to native.
+// Example:
+//   'true' -> true
+//   '1' -> 1
+function toNative(value) {
+  if (value === 'true' || value === 'false') {
+    return value === 'true'
+  } else if (!isNaN(+value)) {
+    return +value
+  } else {
+    return value
+  }
+}
+
+// Creates incremental id.
+function createId(coll) {
+  if (_.isEmpty(coll)) {
+    return 1
+  } else {
+    return _.max(coll, function(doc) {
+      return doc.id
+    }).id + 1
+  }
+}
+
+// Removes empty relations
+function clean() {
+  var toBeRemoved = []
+
+  _(low.db).each(function(coll, collName) {
+    _(coll).each(function(doc) {
+      _(doc).each(function(value, key) {
+        if (/Id$/.test(key)) {
+          var reference = _.pluralize(key.slice(0, - 2))
+          if (!_.isUndefined(low(reference).get(doc[key]).value())) {
+            toBeRemoved.push({
+              collName: collName,
+              id: doc.id
+            })
+          }
+        }
+      })
+    })
+  })
+
+  _(toBeRemoved).each(function(item) {
+    low(item.collName).remove(item.id);
+  })
+}
+
+module.exports = {
+  toNative: toNative,
+  createId: createId,
+  clean: clean
+}