Jason Aden 12c317603a feat(router): add predicate function mode for runGuardsAndResolvers (#27682)
This option means guards and resolvers will ignore changes when a provided predicate function returns `false`. This supports use cases where an application needs to ignore some param updates but not others. For example, changing a sort param in the URL might need to be ignored, whereas changing the a `project` param might require re-run of guards and resolvers.

Related to #26861 #18253 #27464

PR Close #27682
2018-12-18 13:55:06 -08:00
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Angular Router

Managing state transitions is one of the hardest parts of building applications. This is especially true on the web, where you also need to ensure that the state is reflected in the URL. In addition, we often want to split applications into multiple bundles and load them on demand. Doing this transparently isnt trivial.

The Angular router is designed to solve these problems. Using the router, you can declaratively specify application state, manage state transitions while taking care of the URL, and load components on demand.

Overview

Read the overview of the Router here.

Guide

Read the dev guide here.

Local development

# keep @angular/router fresh
$ ./scripts/karma.sh

# keep @angular/core fresh
$ ../../../node_modules/.bin/tsc -p modules --emitDecoratorMetadata -w

# start karma
$ ./scripts/karma.sh