fix(router): remove type bludgeoning of context and outlet when running CanDeactivate (#26496)

jasonaden · kara · commit 496372dd30cc · 2018-11-01T16:04:01.000-07:00
Fixes #18253 PR Close #26496
diff --git a/packages/router/src/utils/preactivation.ts b/packages/router/src/utils/preactivation.ts
@@ -121,8 +121,8 @@ function getRouteGuards(
     }
 
     if (shouldRun) {
-      const outlet = context !.outlet !;
-      checks.canDeactivateChecks.push(new CanDeactivate(outlet.component, curr));
+      const component = context && context.outlet && context.outlet.component || null;
+      checks.canDeactivateChecks.push(new CanDeactivate(component, curr));
     }
   } else {
     if (curr) {

Original file line number	Diff line number	Diff line change
`@@ -121,8 +121,8 @@ function getRouteGuards(`
`121`	`121`	`}`
`122`	`122`
`123`	`123`	`if (shouldRun) {`
`124`		`- const outlet = context !.outlet !;`
`125`		`- checks.canDeactivateChecks.push(new CanDeactivate(outlet.component, curr));`
	`124`	`+ const component = context && context.outlet && context.outlet.component \|\| null;`
	`125`	`+ checks.canDeactivateChecks.push(new CanDeactivate(component, curr));`
`126`	`126`	`}`
`127`	`127`	`} else {`
`128`	`128`	`if (curr) {`