add max log header and default mode

Author: pemrouz

dist/index.js

@@ -50,8 +50,8 @@ function data(ripple) {
     parse: function parse(res) {
       var existing = ripple.resources[res.name] || {};
 
-      res.body = (0, _set2.default)()(res.body || [], existing.body && existing.body.log);
       (0, _extend2.default)(res.headers)(existing.headers);
+      res.body = (0, _set2.default)()(res.body || [], existing.body && existing.body.log, _is2.default.num(res.headers.log) ? res.headers.log : -1);
       (0, _overwrite2.default)(res.body.on)(listeners(existing));
       res.body.on('change.bubble', function (change) {
         return ripple.emit('change', [res.name, change], (0, _not2.default)(_is2.default.in(['data'])));

src/index.js

@@ -10,8 +10,12 @@ export default function data(ripple){
   , parse(res){ 
       const existing = ripple.resources[res.name] || {}
 
-      res.body = set()(res.body || [], existing.body && existing.body.log)
       extend(res.headers)(existing.headers)
+      res.body = set()(
+        res.body || []
+      , existing.body && existing.body.log
+      , is.num(res.headers.log) ? res.headers.log : -1
+      )
       overwrite(res.body.on)(listeners(existing))
       res.body.on('change.bubble', change => ripple.emit('change', [res.name, change], not(is.in(['data']))))
 

test.js

@@ -132,22 +132,17 @@ describe('Data Type', function() {
     ripple('foo', ['foo'])
     update(0, 'bar')(ripple('foo'))
 
-    ripple('foo', set()(['baz']))
+    ripple('foo', ['baz'])
     update(0, 'boo')(ripple('foo'))
 
-    expect(ripple('foo').log)
-      .to.eql(changes)
-      .to.eql([ 
-        { time: 0, type: 'update', value: ['foo'] }
-      , { time: 1, type: 'update', value:  'bar', key: '0' }
-      , { time: 2, type: 'update', value: ['baz'] }
-      , { time: 3, type: 'update', value:  'boo', key: '0' } 
-      ])
-
-    ripple('bar', ripple('foo'))
-    expect(ripple('foo')).to.not.equal(ripple('bar'))
-    expect(ripple('foo').log).to.have.lengthOf(4)
-    expect(ripple('bar').log).to.have.lengthOf(5)
+    expect(changes).to.eql([ 
+      { time: 0, type: 'update', value: ['foo'] }
+    , { time: 1, type: 'update', value:  'bar', key: '0' }
+    , { time: 2, type: 'update', value: ['baz'] }
+    , { time: 3, type: 'update', value:  'boo', key: '0' } 
+    ])
+
+    expect(ripple('foo').log).to.eql([null, null, null, null])
   })
 
   it('should not lose existing headers', function(){