Example how to use Eid in Angular 1.x apps (featuring also business filters!)

eid-in-ang.js

(function() {
'use strict';
var EidPreconditions = Eid.preconditions;
var checkNotNullable = EidPreconditions.checkNotNullable;
var checkArgument = EidPreconditions.checkArgument;
var tryToExecute =  EidPreconditions.tryToExecute;
var app = angular.module('eid-in-ang', []);

var eidifyServiceCall = function(eid, target, operation) {
  checkNotNullable(operation, "20160115:124506", 'Operation should not be nullable');
  checkNotNullable(target, "20160115:131209", 'Target should not be nullable');
  function isIn(operation, target) {
    var keys = Object.keys(target);
    for (var i = 0; i < keys.length; i++) {
      var op = target[keys[i]];
      if (op === operation) {
        return true;
      }
    }
    return false;
  }
  checkArgument(isIn(operation, target), "20160115:124636", 'Operation should be a part of target object');
  return {
    execute: function() {
      return tryToExecute(function() { 
        return operation.apply(target, arguments);
      }, eid);
    }
  }
};

app.service('TickerService', function() {
  this.getCurrentQuotes = function() {
    return [
      { abbr: "GC.F", name: "Gold Future", value: 1081.10, change: 0.27 },
      { abbr: "CL.F", name: "Crude Oil Future", value: 29.60, change: -5.19 },
      { abbr: "USDPLN", name: "U.S. Dollar / Polish Zloty", value: 4.03608, change: -0.001923 },
      { abbr: "SI.F", name: "Silver Future", value: 1379.50, change: -0.22 },
      { abbr: "EURPLN", name: "Euro / Polish Zloty", value: 4.40668, change: 0.01190 },
      { abbr: "BTCUSD", name: "Bitcoin / U.S. Dollar", value: 407.747, change: -22.416 }
    ];
  };
});
app.filter('cssify', function() {
  return function(quote) {
    checkNotNullable(quote, '20160115:132101');
    checkNotNullable(quote.change, '20160115:132121');
    checkArgument(typeof(quote.change) == 'number', '20160115:132140');
    var rounded = Math.round(quote.change * 100) / 100;
    if (rounded > 0.0) {
      return 'raise';
    }
    if (rounded == 0.0) {
      return 'flat';
    }
    if (rounded < 0.0) {
      return 'fall';
    }
  }
});
app.filter('roundize', function() {
  return function(value) {
    checkNotNullable(value, '20160115:133944');
    checkArgument(typeof(value) == 'number', '20160115:134001');
    return Math.round(value * 100) / 100;
  }
});
app.controller('TickerCtrl', [ 'TickerService', function(tickerService) {
  // If there is a suitable proxy:
  // this.quotes = eidify(tickerService, '20160115:122833').getCurrentQuotes();
  var quotesGetter = eidifyServiceCall('20160115:122833', tickerService, tickerService.getCurrentQuotes);
  this.quotes = quotesGetter.execute();
}]);

})();

index.html

<h1>ExceptionID.js used in Angular</h1>

<div ng-app="eid-in-ang">
  <div ng-controller="TickerCtrl as ctrl">
    <table>
      <tr>
        <th>Symbol</th>
        <th>Name</th>
        <th>Value</th>
        <th>Change</th>
      </tr>
      <tr ng-repeat="quote in ctrl.quotes" class="{{ quote | cssify }}">
        <td>{{ quote.abbr }}</td>
        <td>{{ quote.name }}</td>
        <td>{{ quote.value }}</td>
        <td>{{ quote.change | roundize }}</td>
      </tr>
    </table>
  </div>
</div>

<link rel="stylesheet" href="style.css" />
<script src="//cdnjs.cloudflare.com/ajax/libs/angular.js/1.3.14/angular.min.js"></script>
<script src="//rawgit.com/wavesoftware/javascript-eid-exceptions/v1.0.1/dist/browser/toplevel/eid.min.js"></script>
<script src="eid-in-ang.js"></script>

style.css

tr td {
  padding: 0.3em;
  border: 1px solid gray;
}
tr.raise {
  color: green;
}
tr.flat {
  color: blue;
}
tr.fall {
  color: red;
}