drop ember-truth-helpers or dep. fixes #636

addon/components/base-layer.hbs

@@ -15,7 +15,7 @@
     {{#each this.componentsToYield as |c|}}
       {{ember-leaflet-assign-to
         components
-        key=(or c.as c.name)
+        key=(ember-leaflet-or c.as c.name)
         value=(component c.name parent=this node=Node)
         onChange=this.mergeComponents}}
     {{/each}}

addon/components/geojson-layer.hbs

@@ -9,7 +9,7 @@
     {{#each this.componentsToYield as |c|}}
       {{ember-leaflet-assign-to
         components
-        key=(or c.as c.name)
+        key=(ember-leaflet-or c.as c.name)
         value=(component c.name parent=this node=Node)
         onChange=this.mergeComponents}}
     {{/each}}

addon/components/leaflet-map.hbs

@@ -11,7 +11,7 @@
     {{#each this.componentsToYield as |c|}}
       {{ember-leaflet-assign-to
         components
-        key=(or c.as c.name)
+        key=(ember-leaflet-or c.as c.name)
         value=(component c.name parent=this node=Node)
         onChange=this.mergeComponents}}
     {{/each}}

addon/helpers/ember-leaflet-or.js

@@ -0,0 +1,7 @@
+import { helper } from '@ember/component/helper';
+
+export function emberLeafletOr(params) {
+  return params.reduce((previous, current) => previous || current, undefined);
+}
+
+export default helper(emberLeafletOr);

app/helpers/ember-leaflet-or.js

@@ -0,0 +1 @@
+export { default, emberLeafletOr } from 'ember-leaflet/helpers/ember-leaflet-or';

package.json

@@ -83,7 +83,6 @@
     "ember-get-config": "^0.3.0",
     "ember-in-element-polyfill": "^1.0.0",
     "ember-render-helpers": "^0.2.0",
-    "ember-truth-helpers": "^3.0.0",
     "fastboot-transform": "^0.1.3",
     "resolve": "^1.19.0"
   },