fix(flow): add flow typing to user permission types

lib/common/user/UserPermissions.js

@@ -2,9 +2,25 @@
 
 import type {Subscription} from './UserSubscriptions'
 
+/**
+ * The permission types that can be defined in the user profile object
+ * and which determine a user's role and permissions within the application's
+ * modules.
+ */
+export type PermissionType =
+  // Items related to GTFS editing (NOTE: these end in -gtfs not -feed).
+  'edit-gtfs' | 'approve-gtfs' |
+  // Items related to feed source management.
+  'manage-feed' | 'view-feed' |
+  // MTC alerts module items
+  'approve-alert' | 'edit-alert' |
+  // Privileges related to administration of applications, organizations,
+  // and projects.
+  'administer-application' | 'administer-organization' | 'administer-project'
+
 export type Permission = {
   feeds?: Array<string>,
-  type: string
+  type: PermissionType
 }
 
 type Project = {
@@ -103,7 +119,7 @@ export default class UserPermissions {
       this.getOrganizationPermission(orgId, 'administer-organization') != null
   }
 
-  getOrganizationPermission (organizationId: string, permissionType: string) {
+  getOrganizationPermission (organizationId: string, permissionType: PermissionType) {
     if (!this.hasOrganization(organizationId)) return null
     for (const permission of this.getOrganizationPermissions(organizationId)) {
       if (permission.type === permissionType) return permission
@@ -138,13 +154,13 @@ export default class UserPermissions {
     return this.projectLookup[projectId].defaultFeeds || []
   }
 
-  hasProjectPermission (organizationId: ?string, projectId: string, permissionType: string) {
+  hasProjectPermission (organizationId: ?string, projectId: string, permissionType: PermissionType) {
     if (this.isProjectAdmin(projectId, organizationId)) return true
     const p = this.getProjectPermission(projectId, permissionType)
     return (p !== null)
   }
 
-  getProjectPermission (projectId: string, permissionType: string): ?Permission {
+  getProjectPermission (projectId: string, permissionType: PermissionType): ?Permission {
     if (!this.hasProject(projectId)) return null
     var projectPermissions = this.getProjectPermissions(projectId)
     for (const permission of projectPermissions) {
@@ -159,7 +175,7 @@ export default class UserPermissions {
     return null
   }
 
-  hasFeedPermission (organizationId: ?string, projectId: string, feedId: string, permissionType: string) {
+  hasFeedPermission (organizationId: ?string, projectId: string, feedId: string, permissionType: PermissionType) {
     if (this.isProjectAdmin(projectId, organizationId)) return true
     const permission = this.getProjectPermission(projectId, permissionType)
     if (permission) {

lib/common/util/permissions.js

@@ -2,13 +2,14 @@
 
 import {isModuleEnabled} from './config'
 
+import type {PermissionType} from '../user/UserPermissions'
 import type {AlertEntity, Feed, Project} from '../../types'
 import type {ManagerUserState} from '../../types/reducers'
 
 export function getFeedsForPermission (
   project: ?Project,
   user: ManagerUserState,
-  permission: string
+  permission: PermissionType
 ): Array<Feed> {
   if (project && project.feedSources) {
     const {id, organizationId} = project

lib/types/reducers.js

@@ -23,6 +23,7 @@ import type {
   Trip,
   UserProfile
 } from './'
+import type {PermissionType} from '../common/user/UserPermissions'
 
 type FetchStatusSubState = {
   fetchStatus: FetchStatus
@@ -284,7 +285,7 @@ export type FilterState = {
   loadedFeeds: Array<any>,
   map: MapFilter,
   patternFilter: ?string,
-  permissionFilter: string,
+  permissionFilter: PermissionType,
   project: ?string,
   routeFilter: ?string,
   routeLimit: number,