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feat(binding): throw on binding to a blank alias

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fixes #2068
This commit is contained in:
Victor Berchet
2015-05-26 10:55:12 +02:00
parent 05d66bba3f
commit ec2d8cc2c8
2 changed files with 52 additions and 43 deletions
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9
modules/angular2/src/di/binding.ts
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@ -1,4 +1,4 @@
import {Type, isBlank, isPresent, CONST} from 'angular2/src/facade/lang';
import {Type, isBlank, isPresent, CONST, BaseException, stringify} from 'angular2/src/facade/lang';
import {List, MapWrapper, ListWrapper} from 'angular2/src/facade/collection';
import {reflector} from 'angular2/src/reflection/reflection';
import {Key} from './key';
@ -383,7 +383,12 @@ export class BindingBuilder {
* expect(injectorClass.get(Vehicle) instanceof Car).toBe(true);
* ```
*/
toAlias(aliasToken): Binding { return new Binding(this.token, {toAlias: aliasToken}); }
toAlias(aliasToken): Binding {
if (isBlank(aliasToken)) {
throw new BaseException(`Can not alias ${stringify(this.token)} to a blank value!`);
}
return new Binding(this.token, {toAlias: aliasToken});
}
/**
* Binds a key to a function which computes the value.