fix unsharpMask strength fromJson (#493)

Author: strausr

__TESTS__/unit/fromJson/adjust.fromJson.test.ts

@@ -4,7 +4,7 @@ describe('adjust.fromJson', () => {
   it('should generate a url with adjust actions from array of models', function () {
     const transformation = fromJson([
       { actionType: 'improve', mode: 'outdoor', blend: 30},
-      { actionType: 'unsharpMask', level: 50},
+      { actionType: 'unsharpMask', strength: 50},
       { actionType: 'saturation', level: 40}
     ]);
 

src/actions/effect/EffectActions/SimpleEffectAction.ts

@@ -33,12 +33,13 @@ class SimpleEffectAction extends Action {
   }
 
   static fromJson(actionModel: IActionModel): SimpleEffectAction {
-    const {actionType, level} = (actionModel as IEffectActionWithLevelModel);
+    const {actionType, level, strength} = (actionModel as IEffectActionWithLevelModel);
     const effectType = ACTION_TYPE_TO_EFFECT_MODE_MAP[actionType] || actionType;
 
     // We are using this() to allow inheriting classes to use super.fromJson.apply(this, [actionModel])
     // This allows the inheriting classes to determine the class to be created
-    const result = new this(effectType, level);
+    // @ts-ignore
+    const result = new this(effectType, level ? level : strength);
 
     return result;
   }