Errors

I'm just posting the errors I encounter somewhere online for my personal reference. Hopefully google picks it up, if not, use the search bar in the top right. Although there's no reason for you to be here if google didn't send you straight to post with the error.

// currently addicted to Node.js

Mongoose connection events and reconnecting to MongoDB

I’ve seen many methods to have mongoose reconnect to mongo after an error. This is a huge problem, especially if the network drops for even a second. In our app, mongoose didn’t even know the connection had dropped, and our application would not be able to reach the database. To fix this, we had to force mongoose to reconnect on it’s own.

CSS setting the height of a DIV based on a ratio of the width

I had a situation where I needed to set the height of a multiple divs to be the same, but proportionate to its width. The application had gallery like page, which each item’s width based on a percentage of the window width. Each item had an image, with a set aspect ratio and a width set to 100%. In order to get the height to scale with the window width, here’s the CSS trickery I ended up using. Of course there are Javascript methods and other CSS hacks, this was the simplest in my opinion.

Upgrading Angular 1 to Angular 2 – typescript errors

The Error

/node_modules/angular2/src/core/application_ref.d.ts(38,88): error TS2304: Cannot find name 'Promise'.
/node_modules/angular2/src/core/application_ref.d.ts(92,42): error TS2304: Cannot find name 'Promise'.
/node_modules/angular2/src/core/application_ref.d.ts(151,33): error TS2304: Cannot find name 'Promise'.
/node_modules/angular2/src/core/change_detection/differs/default_keyvalue_differ.d.ts(23,15): error TS2304: Cannot find name 'Map'.
/node_modules/angular2/src/core/change_detection/differs/default_keyvalue_differ.d.ts(25,16): error TS2304: Cannot find name 'Map'.
/node_modules/angular2/src/core/di/reflective_provider.d.ts(103,123): error TS2304: Cannot find name 'Map'.
/node_modules/angular2/src/core/di/reflective_provider.d.ts(103,165): error TS2304: Cannot find name 'Map'.
/node_modules/angular2/src/core/linker/component_resolver.d.ts(8,53): error TS2304: Cannot find name 'Promise'.
/node_modules/angular2/src/core/linker/component_resolver.d.ts(12,44): error TS2304: Cannot find name 'Promise'.
/node_modules/angular2/src/core/linker/dynamic_component_loader.d.ts(59,148): error TS2304: Cannot find name 'Promise'.
/node_modules/angular2/src/core/linker/dynamic_component_loader.d.ts(100,144): error TS2304: Cannot find name 'Promise'.
/node_modules/angular2/src/core/linker/dynamic_component_loader.d.ts(105,139): error TS2304: Cannot find name 'Promise'.
/node_modules/angular2/src/core/linker/dynamic_component_loader.d.ts(106,135): error TS2304: Cannot find name 'Promise'.
/node_modules/angular2/src/facade/async.d.ts(27,33): error TS2304: Cannot find name 'Promise'.
/node_modules/angular2/src/facade/async.d.ts(28,45): error TS2304: Cannot find name 'Promise'.
/node_modules/angular2/src/facade/collection.d.ts(1,25): error TS2304: Cannot find name 'MapConstructor'.
/node_modules/angular2/src/facade/collection.d.ts(2,25): error TS2304: Cannot find name 'SetConstructor'.
/node_modules/angular2/src/facade/collection.d.ts(4,27): error TS2304: Cannot find name 'Map'.
/node_modules/angular2/src/facade/collection.d.ts(4,39): error TS2304: Cannot find name 'Map'.
/node_modules/angular2/src/facade/collection.d.ts(7,9): error TS2304: Cannot find name 'Map'.
/node_modules/angular2/src/facade/collection.d.ts(8,30): error TS2304: Cannot find name 'Map'.
/node_modules/angular2/src/facade/collection.d.ts(11,43): error TS2304: Cannot find name 'Map'.
/node_modules/angular2/src/facade/collection.d.ts(12,27): error TS2304: Cannot find name 'Map'.
/node_modules/angular2/src/facade/collection.d.ts(14,23): error TS2304: Cannot find name 'Map'.
/node_modules/angular2/src/facade/collection.d.ts(15,25): error TS2304: Cannot find name 'Map'.
/node_modules/angular2/src/facade/collection.d.ts(100,41): error TS2304: Cannot find name 'Set'.
/node_modules/angular2/src/facade/collection.d.ts(101,22): error TS2304: Cannot find name 'Set'.
/node_modules/angular2/src/facade/collection.d.ts(102,25): error TS2304: Cannot find name 'Set'.
/node_modules/angular2/src/facade/lang.d.ts(4,17): error TS2304: Cannot find name 'Map'.
/node_modules/angular2/src/facade/lang.d.ts(5,17): error TS2304: Cannot find name 'Set'.
/node_modules/angular2/src/facade/lang.d.ts(71,59): error TS2304: Cannot find name 'Map'.
/node_modules/angular2/src/facade/promise.d.ts(2,14): error TS2304: Cannot find name 'Promise'.
/node_modules/angular2/src/facade/promise.d.ts(8,32): error TS2304: Cannot find name 'Promise'.
/node_modules/angular2/src/facade/promise.d.ts(9,38): error TS2304: Cannot find name 'Promise'.
/node_modules/angular2/src/facade/promise.d.ts(10,35): error TS2304: Cannot find name 'Promise'.
/node_modules/angular2/src/facade/promise.d.ts(10,93): error TS2304: Cannot find name 'Promise'.
/node_modules/angular2/src/facade/promise.d.ts(11,34): error TS2304: Cannot find name 'Promise'.
/node_modules/angular2/src/facade/promise.d.ts(11,50): error TS2304: Cannot find name 'Promise'.
/node_modules/angular2/src/facade/promise.d.ts(12,32): error TS2304: Cannot find name 'Promise'.
/node_modules/angular2/src/facade/promise.d.ts(12,149): error TS2304: Cannot find name 'Promise'.
/node_modules/angular2/src/facade/promise.d.ts(13,43): error TS2304: Cannot find name 'Promise'.
/node_modules/rxjs/Observable.d.ts(10,66): error TS2304: Cannot find name 'Promise'.
/node_modules/rxjs/Observable.d.ts(66,60): error TS2304: Cannot find name 'Promise'.
/node_modules/rxjs/Observable.d.ts(66,70): error TS2304: Cannot find name 'Promise'.