1 | /**
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2 | * @license
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3 | * Copyright Google LLC All Rights Reserved.
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4 | *
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5 | * Use of this source code is governed by an MIT-style license that can be
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6 | * found in the LICENSE file at https://angular.io/license
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7 | */
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8 | import { concat, defer, from, of } from 'rxjs';
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9 | import { concatMap, first, map, mergeMap } from 'rxjs/operators';
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10 | import { ActivationStart, ChildActivationStart } from '../events';
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11 | import { wrapIntoObservable } from '../utils/collection';
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12 | import { getCanActivateChild, getToken } from '../utils/preactivation';
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13 | import { isBoolean, isCanActivate, isCanActivateChild, isCanDeactivate, isFunction } from '../utils/type_guards';
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14 | import { prioritizedGuardValue } from './prioritized_guard_value';
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15 | export function checkGuards(moduleInjector, forwardEvent) {
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16 | return mergeMap(t => {
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17 | const { targetSnapshot, currentSnapshot, guards: { canActivateChecks, canDeactivateChecks } } = t;
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18 | if (canDeactivateChecks.length === 0 && canActivateChecks.length === 0) {
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19 | return of(Object.assign(Object.assign({}, t), { guardsResult: true }));
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20 | }
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21 | return runCanDeactivateChecks(canDeactivateChecks, targetSnapshot, currentSnapshot, moduleInjector)
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22 | .pipe(mergeMap(canDeactivate => {
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23 | return canDeactivate && isBoolean(canDeactivate) ?
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24 | runCanActivateChecks(targetSnapshot, canActivateChecks, moduleInjector, forwardEvent) :
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25 | of(canDeactivate);
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26 | }), map(guardsResult => (Object.assign(Object.assign({}, t), { guardsResult }))));
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27 | });
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28 | }
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29 | function runCanDeactivateChecks(checks, futureRSS, currRSS, moduleInjector) {
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30 | return from(checks).pipe(mergeMap(check => runCanDeactivate(check.component, check.route, currRSS, futureRSS, moduleInjector)), first(result => {
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31 | return result !== true;
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32 | }, true));
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33 | }
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34 | function runCanActivateChecks(futureSnapshot, checks, moduleInjector, forwardEvent) {
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35 | return from(checks).pipe(concatMap((check) => {
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36 | return concat(fireChildActivationStart(check.route.parent, forwardEvent), fireActivationStart(check.route, forwardEvent), runCanActivateChild(futureSnapshot, check.path, moduleInjector), runCanActivate(futureSnapshot, check.route, moduleInjector));
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37 | }), first(result => {
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38 | return result !== true;
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39 | }, true));
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40 | }
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41 | /**
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42 | * This should fire off `ActivationStart` events for each route being activated at this
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43 | * level.
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44 | * In other words, if you're activating `a` and `b` below, `path` will contain the
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45 | * `ActivatedRouteSnapshot`s for both and we will fire `ActivationStart` for both. Always
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46 | * return
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47 | * `true` so checks continue to run.
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48 | */
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49 | function fireActivationStart(snapshot, forwardEvent) {
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50 | if (snapshot !== null && forwardEvent) {
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51 | forwardEvent(new ActivationStart(snapshot));
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52 | }
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53 | return of(true);
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54 | }
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55 | /**
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56 | * This should fire off `ChildActivationStart` events for each route being activated at this
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57 | * level.
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58 | * In other words, if you're activating `a` and `b` below, `path` will contain the
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59 | * `ActivatedRouteSnapshot`s for both and we will fire `ChildActivationStart` for both. Always
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60 | * return
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61 | * `true` so checks continue to run.
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62 | */
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63 | function fireChildActivationStart(snapshot, forwardEvent) {
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64 | if (snapshot !== null && forwardEvent) {
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65 | forwardEvent(new ChildActivationStart(snapshot));
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66 | }
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67 | return of(true);
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68 | }
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69 | function runCanActivate(futureRSS, futureARS, moduleInjector) {
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70 | const canActivate = futureARS.routeConfig ? futureARS.routeConfig.canActivate : null;
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71 | if (!canActivate || canActivate.length === 0)
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72 | return of(true);
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73 | const canActivateObservables = canActivate.map((c) => {
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74 | return defer(() => {
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75 | const guard = getToken(c, futureARS, moduleInjector);
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76 | let observable;
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77 | if (isCanActivate(guard)) {
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78 | observable = wrapIntoObservable(guard.canActivate(futureARS, futureRSS));
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79 | }
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80 | else if (isFunction(guard)) {
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81 | observable = wrapIntoObservable(guard(futureARS, futureRSS));
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82 | }
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83 | else {
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84 | throw new Error('Invalid CanActivate guard');
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85 | }
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86 | return observable.pipe(first());
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87 | });
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88 | });
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89 | return of(canActivateObservables).pipe(prioritizedGuardValue());
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90 | }
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91 | function runCanActivateChild(futureRSS, path, moduleInjector) {
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92 | const futureARS = path[path.length - 1];
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93 | const canActivateChildGuards = path.slice(0, path.length - 1)
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94 | .reverse()
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95 | .map(p => getCanActivateChild(p))
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96 | .filter(_ => _ !== null);
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97 | const canActivateChildGuardsMapped = canActivateChildGuards.map((d) => {
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98 | return defer(() => {
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99 | const guardsMapped = d.guards.map((c) => {
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100 | const guard = getToken(c, d.node, moduleInjector);
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101 | let observable;
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102 | if (isCanActivateChild(guard)) {
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103 | observable = wrapIntoObservable(guard.canActivateChild(futureARS, futureRSS));
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104 | }
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105 | else if (isFunction(guard)) {
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106 | observable = wrapIntoObservable(guard(futureARS, futureRSS));
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107 | }
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108 | else {
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109 | throw new Error('Invalid CanActivateChild guard');
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110 | }
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111 | return observable.pipe(first());
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112 | });
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113 | return of(guardsMapped).pipe(prioritizedGuardValue());
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114 | });
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115 | });
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116 | return of(canActivateChildGuardsMapped).pipe(prioritizedGuardValue());
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117 | }
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118 | function runCanDeactivate(component, currARS, currRSS, futureRSS, moduleInjector) {
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119 | const canDeactivate = currARS && currARS.routeConfig ? currARS.routeConfig.canDeactivate : null;
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120 | if (!canDeactivate || canDeactivate.length === 0)
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121 | return of(true);
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122 | const canDeactivateObservables = canDeactivate.map((c) => {
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123 | const guard = getToken(c, currARS, moduleInjector);
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124 | let observable;
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125 | if (isCanDeactivate(guard)) {
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126 | observable = wrapIntoObservable(guard.canDeactivate(component, currARS, currRSS, futureRSS));
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127 | }
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128 | else if (isFunction(guard)) {
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129 | observable = wrapIntoObservable(guard(component, currARS, currRSS, futureRSS));
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130 | }
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131 | else {
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132 | throw new Error('Invalid CanDeactivate guard');
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133 | }
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134 | return observable.pipe(first());
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135 | });
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136 | return of(canDeactivateObservables).pipe(prioritizedGuardValue());
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137 | }
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138 | //# 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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {Injector} from '@angular/core';\nimport {concat, defer, from, MonoTypeOperatorFunction, Observable, of} from 'rxjs';\nimport {concatMap, first, map, mergeMap} from 'rxjs/operators';\n\nimport {ActivationStart, ChildActivationStart, Event} from '../events';\nimport {CanActivateChildFn, CanActivateFn, CanDeactivateFn} from '../interfaces';\nimport {NavigationTransition} from '../router';\nimport {ActivatedRouteSnapshot, RouterStateSnapshot} from '../router_state';\nimport {UrlTree} from '../url_tree';\nimport {wrapIntoObservable} from '../utils/collection';\nimport {CanActivate, CanDeactivate, getCanActivateChild, getToken} from '../utils/preactivation';\nimport {isBoolean, isCanActivate, isCanActivateChild, isCanDeactivate, isFunction} from '../utils/type_guards';\n\nimport {prioritizedGuardValue} from './prioritized_guard_value';\n\nexport function checkGuards(moduleInjector: Injector, forwardEvent?: (evt: Event) => void):\n    MonoTypeOperatorFunction<NavigationTransition> {\n  return mergeMap(t => {\n    const {targetSnapshot, currentSnapshot, guards: {canActivateChecks, canDeactivateChecks}} = t;\n    if (canDeactivateChecks.length === 0 && canActivateChecks.length === 0) {\n      return of({...t, guardsResult: true});\n    }\n\n    return runCanDeactivateChecks(\n               canDeactivateChecks, targetSnapshot!, currentSnapshot, moduleInjector)\n        .pipe(\n            mergeMap(canDeactivate => {\n              return canDeactivate && isBoolean(canDeactivate) ?\n                  runCanActivateChecks(\n                      targetSnapshot!, canActivateChecks, moduleInjector, forwardEvent) :\n                  of(canDeactivate);\n            }),\n            map(guardsResult => ({...t, guardsResult})));\n  });\n}\n\nfunction runCanDeactivateChecks(\n    checks: CanDeactivate[], futureRSS: RouterStateSnapshot, currRSS: RouterStateSnapshot,\n    moduleInjector: Injector) {\n  return from(checks).pipe(\n      mergeMap(\n          check =>\n              runCanDeactivate(check.component, check.route, currRSS, futureRSS, moduleInjector)),\n      first(result => {\n        return result !== true;\n      }, true as boolean | UrlTree));\n}\n\nfunction runCanActivateChecks(\n    futureSnapshot: RouterStateSnapshot, checks: CanActivate[], moduleInjector: Injector,\n    forwardEvent?: (evt: Event) => void) {\n  return from(checks).pipe(\n      concatMap((check: CanActivate) => {\n        return concat(\n            fireChildActivationStart(check.route.parent, forwardEvent),\n            fireActivationStart(check.route, forwardEvent),\n            runCanActivateChild(futureSnapshot, check.path, moduleInjector),\n            runCanActivate(futureSnapshot, check.route, moduleInjector));\n      }),\n      first(result => {\n        return result !== true;\n      }, true as boolean | UrlTree));\n}\n\n/**\n * This should fire off `ActivationStart` events for each route being activated at this\n * level.\n * In other words, if you're activating `a` and `b` below, `path` will contain the\n * `ActivatedRouteSnapshot`s for both and we will fire `ActivationStart` for both. Always\n * return\n * `true` so checks continue to run.\n */\nfunction fireActivationStart(\n    snapshot: ActivatedRouteSnapshot|null,\n    forwardEvent?: (evt: Event) => void): Observable<boolean> {\n  if (snapshot !== null && forwardEvent) {\n    forwardEvent(new ActivationStart(snapshot));\n  }\n  return of(true);\n}\n\n/**\n * This should fire off `ChildActivationStart` events for each route being activated at this\n * level.\n * In other words, if you're activating `a` and `b` below, `path` will contain the\n * `ActivatedRouteSnapshot`s for both and we will fire `ChildActivationStart` for both. Always\n * return\n * `true` so checks continue to run.\n */\nfunction fireChildActivationStart(\n    snapshot: ActivatedRouteSnapshot|null,\n    forwardEvent?: (evt: Event) => void): Observable<boolean> {\n  if (snapshot !== null && forwardEvent) {\n    forwardEvent(new ChildActivationStart(snapshot));\n  }\n  return of(true);\n}\n\nfunction runCanActivate(\n    futureRSS: RouterStateSnapshot, futureARS: ActivatedRouteSnapshot,\n    moduleInjector: Injector): Observable<boolean|UrlTree> {\n  const canActivate = futureARS.routeConfig ? futureARS.routeConfig.canActivate : null;\n  if (!canActivate || canActivate.length === 0) return of(true);\n\n  const canActivateObservables = canActivate.map((c: any) => {\n    return defer(() => {\n      const guard = getToken(c, futureARS, moduleInjector);\n      let observable;\n      if (isCanActivate(guard)) {\n        observable = wrapIntoObservable(guard.canActivate(futureARS, futureRSS));\n      } else if (isFunction<CanActivateFn>(guard)) {\n        observable = wrapIntoObservable(guard(futureARS, futureRSS));\n      } else {\n        throw new Error('Invalid CanActivate guard');\n      }\n      return observable.pipe(first());\n    });\n  });\n  return of(canActivateObservables).pipe(prioritizedGuardValue());\n}\n\nfunction runCanActivateChild(\n    futureRSS: RouterStateSnapshot, path: ActivatedRouteSnapshot[],\n    moduleInjector: Injector): Observable<boolean|UrlTree> {\n  const futureARS = path[path.length - 1];\n\n  const canActivateChildGuards = path.slice(0, path.length - 1)\n                                     .reverse()\n                                     .map(p => getCanActivateChild(p))\n                                     .filter(_ => _ !== null);\n\n  const canActivateChildGuardsMapped = canActivateChildGuards.map((d: any) => {\n    return defer(() => {\n      const guardsMapped = d.guards.map((c: any) => {\n        const guard = getToken(c, d.node, moduleInjector);\n        let observable;\n        if (isCanActivateChild(guard)) {\n          observable = wrapIntoObservable(guard.canActivateChild(futureARS, futureRSS));\n        } else if (isFunction<CanActivateChildFn>(guard)) {\n          observable = wrapIntoObservable(guard(futureARS, futureRSS));\n        } else {\n          throw new Error('Invalid CanActivateChild guard');\n        }\n        return observable.pipe(first());\n      });\n      return of(guardsMapped).pipe(prioritizedGuardValue());\n    });\n  });\n  return of(canActivateChildGuardsMapped).pipe(prioritizedGuardValue());\n}\n\nfunction runCanDeactivate(\n    component: Object|null, currARS: ActivatedRouteSnapshot, currRSS: RouterStateSnapshot,\n    futureRSS: RouterStateSnapshot, moduleInjector: Injector): Observable<boolean|UrlTree> {\n  const canDeactivate = currARS && currARS.routeConfig ? currARS.routeConfig.canDeactivate : null;\n  if (!canDeactivate || canDeactivate.length === 0) return of(true);\n  const canDeactivateObservables = canDeactivate.map((c: any) => {\n    const guard = getToken(c, currARS, moduleInjector);\n    let observable;\n    if (isCanDeactivate(guard)) {\n      observable = wrapIntoObservable(guard.canDeactivate(component!, currARS, currRSS, futureRSS));\n    } else if (isFunction<CanDeactivateFn<any>>(guard)) {\n      observable = wrapIntoObservable(guard(component, currARS, currRSS, futureRSS));\n    } else {\n      throw new Error('Invalid CanDeactivate guard');\n    }\n    return observable.pipe(first());\n  });\n  return of(canDeactivateObservables).pipe(prioritizedGuardValue());\n}\n"]} |
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