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fix(Pipe): pure is an optional argument

This commit is contained in:
Victor Berchet 2015-10-27 12:42:35 -07:00
parent fc016b59dc
commit 7ba426c3e6
1 changed files with 6 additions and 4 deletions
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10
modules/angular2/src/core/metadata/directives.ts
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@ -948,12 +948,14 @@ export class ComponentMetadata extends DirectiveMetadata {
/** /**
* Declare reusable pipe function. * Declare reusable pipe function.
* *
* A "pure" pipe is only re-evaluated when any of its input or arguments changes.
*
* When not specified, pipes default to being pure.
*
* ### Example * ### Example
* *
* ``` * ```
* @Pipe({ * @Pipe({name: 'lowercase'})
* name: 'lowercase'
* })
* class Lowercase { * class Lowercase {
* transform(v, args) { return v.toLowerCase(); } * transform(v, args) { return v.toLowerCase(); }
* } * }
@ -965,7 +967,7 @@ export class PipeMetadata extends InjectableMetadata {
/** @internal */ /** @internal */
_pure: boolean; _pure: boolean;
constructor({name, pure}: {name: string, pure: boolean}) { constructor({name, pure}: {name: string, pure?: boolean}) {
super(); super();
this.name = name; this.name = name;
this._pure = pure; this._pure = pure;