Angular 4 <template> warning

[infinitysky]

Hi all,
I just upgraded my project from Angular 2 to Angular 4. After I start my project, I received a warning message about the .

Template parse warnings:
The <template> element is deprecated. Use <ng-template> instead ("!option.isLabel && setSelected($event, option)" [class.dropdown-header]="option.isLabel">
          [ERROR ->]<template [ngIf]="option.isLabel">
            {{ option.name }}
          </template>
"): MultiselectDropdown@36:10

I checked the source code. Just edit the line No. 126 and change the <

<template [ngIf]="option.isLabel">
            {{ option.name }}
 </template>>

to

 <ng-templat [ngIf]="option.isLabel">
            {{ option.name }}
  </ng-templat >

Then, the warning will disappear.

[softsimon]

I am aware of this. But Angular 2 is the latest stable release which the majority is using, and changing to <ng-template will lead to build fail for 2.x users. Not until 4.0 is released stable and people have upgraded this fix can be made.

See #84

[jiayihu]

Actually @softsimon it has been introduced in latest AOT commit at this line and now I'm receiving errors because I'm using Angular 2.X

[softsimon]

I am not sure how to handle this issue correctly. Support 2.x with deprecated warning for 4.x users or require 4.x? It would be unnecessary hassle with two branches.

[jiayihu]

I think since Angular 4 is just release as stable this lib should continue to support 2.x for a while and 4.x users will see a warning. ng-bootstrap is doing the same.

The problem with requiring 4.x is that then 2.x users won't be able to use the lib because the application will throw instead of just logging a warning.