diff --git a/packages/client/src/components/Button.tsx b/packages/client/src/components/Button.tsx
index 4f8c821..f65b291 100644
--- a/packages/client/src/components/Button.tsx
+++ b/packages/client/src/components/Button.tsx
@@ -1,10 +1,10 @@
 import React from 'react'
 
-export interface IButtonProps {
-  type: string
+export interface ButtonProps {
+  // type: string
 }
 
-export class Button extends React.PureComponent {
+export class Button extends React.PureComponent<ButtonProps> {
   render() {
     return (
       <button>{this.props.children}</button>
diff --git a/packages/client/src/components/Component.tsx b/packages/client/src/components/Component.tsx
index 1971609..01fc872 100644
--- a/packages/client/src/components/Component.tsx
+++ b/packages/client/src/components/Component.tsx
@@ -1,17 +1,17 @@
 import React from 'react'
 import {connect} from 'react-redux'
 
-interface IComponentProps {
+interface ComponentProps {
   value: string
 }
 
-interface IStateProps {
+interface StateProps {
   value: string
 }
 
 export class Component
-extends React.PureComponent<IComponentProps, IStateProps> {
-  constructor(props: IComponentProps) {
+extends React.PureComponent<ComponentProps, StateProps> {
+  constructor(props: ComponentProps) {
     super(props)
     this.state = {
       value: props.value,
@@ -37,7 +37,7 @@ extends React.PureComponent<IComponentProps, IStateProps> {
   }
 }
 
-function mapStateToProps(state: any) {
+function mapStateToProps(state: {value: string}) {
   return {
     value: state.value,
   }
diff --git a/packages/client/src/components/Modal.tsx b/packages/client/src/components/Modal.tsx
index 2ce3f60..37c8b80 100644
--- a/packages/client/src/components/Modal.tsx
+++ b/packages/client/src/components/Modal.tsx
@@ -1,11 +1,11 @@
 import {Modal as M, ModalBackground, ModalContent, ModalClose} from 'bloomer'
 import React from 'react'
 
-export interface IModalProps {
+export interface ModalProps {
   isActive?: boolean
 }
 
-export class Modal extends React.PureComponent<IModalProps> {
+export class Modal extends React.PureComponent<ModalProps> {
   render() {
     return (
       <M isActive={this.props.isActive}>
diff --git a/packages/common/src/IAPIDef.ts b/packages/common/src/APIDef.ts
similarity index 54%
rename from packages/common/src/IAPIDef.ts
rename to packages/common/src/APIDef.ts
index 69fb63b..6919bb4 100644
--- a/packages/common/src/IAPIDef.ts
+++ b/packages/common/src/APIDef.ts
@@ -1,17 +1,17 @@
-import { IUser, INewUser } from './user'
-import { ICredentials } from './auth'
+import { UserProfile, NewUser } from './user'
+import { Credentials } from './auth'
 
-export interface IAPIDef {
+export interface APIDef {
   '/auth/register': {
     'post': {
-      body: INewUser
-      response: IUser
+      body: NewUser
+      response: UserProfile
     }
   }
   '/auth/login': {
     'post': {
-      body: ICredentials
-      response: IUser
+      body: Credentials
+      response: UserProfile
     }
   }
   '/auth/logout': {
diff --git a/packages/common/src/IContext.ts b/packages/common/src/Context.ts
similarity index 53%
rename from packages/common/src/IContext.ts
rename to packages/common/src/Context.ts
index dd841c5..5b4361e 100644
--- a/packages/common/src/IContext.ts
+++ b/packages/common/src/Context.ts
@@ -1,4 +1,4 @@
-export interface IContext {
+export interface Context {
   user?: {
     id: number
   }
diff --git a/packages/common/src/ILogger.ts b/packages/common/src/ILogger.ts
deleted file mode 100644
index 132b1a6..0000000
--- a/packages/common/src/ILogger.ts
+++ /dev/null
@@ -1,9 +0,0 @@
-type ILogFunction = (message: string, ...meta: any[]) => void
-
-export interface ILogger {
-  error: ILogFunction
-  warn: ILogFunction
-  info: ILogFunction
-  debug: ILogFunction
-  verbose: ILogFunction
-}
diff --git a/packages/common/src/IRole.ts b/packages/common/src/IRole.ts
deleted file mode 100644
index 320eb65..0000000
--- a/packages/common/src/IRole.ts
+++ /dev/null
@@ -1,4 +0,0 @@
-export interface IRole {
-  readonly id: number
-  readonly name: string
-}
diff --git a/packages/common/src/auth/ICredentials.ts b/packages/common/src/auth/Credentials.ts
similarity index 64%
rename from packages/common/src/auth/ICredentials.ts
rename to packages/common/src/auth/Credentials.ts
index bfeb4be..910655a 100644
--- a/packages/common/src/auth/ICredentials.ts
+++ b/packages/common/src/auth/Credentials.ts
@@ -1,4 +1,4 @@
-export interface ICredentials {
+export interface Credentials {
   readonly username: string
   readonly password: string
 }
diff --git a/packages/common/src/auth/index.ts b/packages/common/src/auth/index.ts
index e2e597a..7021d94 100644
--- a/packages/common/src/auth/index.ts
+++ b/packages/common/src/auth/index.ts
@@ -1 +1 @@
-export * from './ICredentials'
+export * from './Credentials'
diff --git a/packages/common/src/filterProps.test.ts b/packages/common/src/filterProps.test.ts
index ac696e5..0efa874 100644
--- a/packages/common/src/filterProps.test.ts
+++ b/packages/common/src/filterProps.test.ts
@@ -1,25 +1,25 @@
 import {createFilterProps} from './filterProps'
 
-interface IEntity {
+interface Entity {
   readonly id: number
 }
 
-interface IPerson {
+interface Person {
   readonly firstName: string
   readonly lastName: string
 }
 
-interface IPersonEntity extends IEntity, IPerson {}
+interface PersonEntity extends Entity, Person {}
 
 describe('filterProps', () => {
 
-  const p: IPersonEntity = {
+  const p: PersonEntity = {
     id: 1,
     firstName: 'John',
     lastName: 'Smith',
   }
 
-  const filterProps = createFilterProps<IPerson>({
+  const filterProps = createFilterProps<Person>({
     firstName: true,
     lastName: true,
   })
diff --git a/packages/common/src/index.ts b/packages/common/src/index.ts
index d7a101b..3352e2b 100644
--- a/packages/common/src/index.ts
+++ b/packages/common/src/index.ts
@@ -1,18 +1,15 @@
-export * from './entities'
-export * from './IContext'
-export * from './IAPIDef'
+export * from './APIDef'
 export * from './auth'
-export * from './ILogger'
-export * from './IRole'
-export * from './StringUtils'
+export * from './Context'
+export * from './entities'
 export * from './filterProps'
 export * from './guard'
 export * from './indexBy'
+export * from './StringUtils'
+export * from './team'
 export * from './types'
+export * from './user'
 export * from './without'
 
-export * from './team'
-export * from './user'
-
 import * as entities from './entities'
-export {entities}
+export { entities }
diff --git a/packages/common/src/rpc.ts b/packages/common/src/rpc.ts
index 1d3947a..120038c 100644
--- a/packages/common/src/rpc.ts
+++ b/packages/common/src/rpc.ts
@@ -1,8 +1,7 @@
-import {IContext} from './IContext'
-import {ITeamService} from './team'
-import {IUserService} from './user'
+import {TeamService} from './team'
+import {UserService} from './user'
 
-export interface IRPCServices {
-  userService: IUserService
-  teamService: ITeamService
+export interface RPCServices {
+  userService: UserService
+  teamService: TeamService
 }
diff --git a/packages/common/src/team/ITeamCreateParams.ts b/packages/common/src/team/ITeamCreateParams.ts
deleted file mode 100644
index 742287f..0000000
--- a/packages/common/src/team/ITeamCreateParams.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-export interface ITeamCreateParams {
-  name: string
-}
diff --git a/packages/common/src/team/ITeamRemoveParams.ts b/packages/common/src/team/ITeamRemoveParams.ts
deleted file mode 100644
index c5ff2a4..0000000
--- a/packages/common/src/team/ITeamRemoveParams.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-export interface ITeamRemoveParams {
-  id: number
-}
diff --git a/packages/common/src/team/ITeamService.ts b/packages/common/src/team/ITeamService.ts
deleted file mode 100644
index 95bc332..0000000
--- a/packages/common/src/team/ITeamService.ts
+++ /dev/null
@@ -1,30 +0,0 @@
-import { RPCActions } from '@rondo.dev/jsonrpc'
-import { keys } from 'ts-transformer-keys'
-import { Team } from '../entities'
-import { ITeamAddUserParams } from './ITeamAddUserParams'
-import { ITeamCreateParams } from './ITeamCreateParams'
-import { ITeamRemoveParams } from './ITeamRemoveParams'
-import { ITeamUpdateParams } from './ITeamUpdateParams'
-import { ITeamUsers } from './ITeamUsers'
-import { IUserInTeam } from './IUserInTeam'
-
-export interface ITeamService {
-  create(params: ITeamCreateParams): Promise<Team>
-
-  remove(params: ITeamRemoveParams): Promise<{id: number}>
-
-  update(params: ITeamUpdateParams): Promise<Team>
-
-  addUser(params: ITeamAddUserParams): Promise<IUserInTeam>
-
-  removeUser(params: ITeamAddUserParams): Promise<ITeamAddUserParams>
-
-  findOne(id: number): Promise<Team | undefined>
-
-  find(): Promise<Team[]>
-
-  findUsers(teamId: number): Promise<ITeamUsers>
-}
-
-export const TeamServiceMethods = keys<ITeamService>()
-export type TeamActions = RPCActions<ITeamService, 'teamService'>
diff --git a/packages/common/src/team/ITeamUpdateParams.ts b/packages/common/src/team/ITeamUpdateParams.ts
deleted file mode 100644
index a114b60..0000000
--- a/packages/common/src/team/ITeamUpdateParams.ts
+++ /dev/null
@@ -1,4 +0,0 @@
-export interface ITeamUpdateParams {
-  id: number
-  name: string
-}
diff --git a/packages/common/src/team/ITeamUsers.ts b/packages/common/src/team/ITeamUsers.ts
deleted file mode 100644
index 79a451b..0000000
--- a/packages/common/src/team/ITeamUsers.ts
+++ /dev/null
@@ -1,6 +0,0 @@
-import { IUserInTeam } from './IUserInTeam'
-
-export interface ITeamUsers {
-  teamId: number
-  usersInTeam: IUserInTeam[]
-}
diff --git a/packages/common/src/team/ITeamAddUserParams.ts b/packages/common/src/team/TeamAddUserParams.ts
similarity index 58%
rename from packages/common/src/team/ITeamAddUserParams.ts
rename to packages/common/src/team/TeamAddUserParams.ts
index bdee3ad..f2054a6 100644
--- a/packages/common/src/team/ITeamAddUserParams.ts
+++ b/packages/common/src/team/TeamAddUserParams.ts
@@ -1,4 +1,4 @@
-export interface ITeamAddUserParams {
+export interface TeamAddUserParams {
   teamId: number
   userId: number
   roleId: number
diff --git a/packages/common/src/team/TeamCreateParams.ts b/packages/common/src/team/TeamCreateParams.ts
new file mode 100644
index 0000000..2764641
--- /dev/null
+++ b/packages/common/src/team/TeamCreateParams.ts
@@ -0,0 +1,3 @@
+export interface TeamCreateParams {
+  name: string
+}
diff --git a/packages/common/src/team/TeamRemoveParams.ts b/packages/common/src/team/TeamRemoveParams.ts
new file mode 100644
index 0000000..f312a2a
--- /dev/null
+++ b/packages/common/src/team/TeamRemoveParams.ts
@@ -0,0 +1,3 @@
+export interface TeamRemoveParams {
+  id: number
+}
diff --git a/packages/common/src/team/TeamService.ts b/packages/common/src/team/TeamService.ts
new file mode 100644
index 0000000..40b7c36
--- /dev/null
+++ b/packages/common/src/team/TeamService.ts
@@ -0,0 +1,30 @@
+import { RPCActions } from '@rondo.dev/jsonrpc'
+import { keys } from 'ts-transformer-keys'
+import { Team } from '../entities'
+import { TeamAddUserParams } from './TeamAddUserParams'
+import { TeamCreateParams } from './TeamCreateParams'
+import { TeamRemoveParams } from './TeamRemoveParams'
+import { TeamUpdateParams } from './TeamUpdateParams'
+import { TeamUsers } from './TeamUsers'
+import { UserInTeam } from './UserInTeam'
+
+export interface TeamService {
+  create(params: TeamCreateParams): Promise<Team>
+
+  remove(params: TeamRemoveParams): Promise<{id: number}>
+
+  update(params: TeamUpdateParams): Promise<Team>
+
+  addUser(params: TeamAddUserParams): Promise<UserInTeam>
+
+  removeUser(params: TeamAddUserParams): Promise<TeamAddUserParams>
+
+  findOne(id: number): Promise<Team | undefined>
+
+  find(): Promise<Team[]>
+
+  findUsers(teamId: number): Promise<TeamUsers>
+}
+
+export const TeamServiceMethods = keys<TeamService>()
+export type TeamActions = RPCActions<TeamService, 'teamService'>
diff --git a/packages/common/src/team/TeamUpdateParams.ts b/packages/common/src/team/TeamUpdateParams.ts
new file mode 100644
index 0000000..e929989
--- /dev/null
+++ b/packages/common/src/team/TeamUpdateParams.ts
@@ -0,0 +1,4 @@
+export interface TeamUpdateParams {
+  id: number
+  name: string
+}
diff --git a/packages/common/src/team/TeamUsers.ts b/packages/common/src/team/TeamUsers.ts
new file mode 100644
index 0000000..2136682
--- /dev/null
+++ b/packages/common/src/team/TeamUsers.ts
@@ -0,0 +1,6 @@
+import { UserInTeam } from './UserInTeam'
+
+export interface TeamUsers {
+  teamId: number
+  usersInTeam: UserInTeam[]
+}
diff --git a/packages/common/src/team/IUserInTeam.ts b/packages/common/src/team/UserInTeam.ts
similarity index 75%
rename from packages/common/src/team/IUserInTeam.ts
rename to packages/common/src/team/UserInTeam.ts
index 6391158..986cf05 100644
--- a/packages/common/src/team/IUserInTeam.ts
+++ b/packages/common/src/team/UserInTeam.ts
@@ -1,4 +1,4 @@
-export interface IUserInTeam {
+export interface UserInTeam {
   teamId: number
   userId: number
   displayName: string
diff --git a/packages/common/src/team/index.ts b/packages/common/src/team/index.ts
index f29a050..425d5a6 100644
--- a/packages/common/src/team/index.ts
+++ b/packages/common/src/team/index.ts
@@ -1,7 +1,7 @@
-export * from './ITeamAddUserParams'
-export * from './ITeamCreateParams'
-export * from './ITeamRemoveParams'
-export * from './ITeamService'
-export * from './ITeamUpdateParams'
-export * from './ITeamUsers'
-export * from './IUserInTeam'
+export * from './TeamAddUserParams'
+export * from './TeamCreateParams'
+export * from './TeamRemoveParams'
+export * from './TeamService'
+export * from './TeamUpdateParams'
+export * from './TeamUsers'
+export * from './UserInTeam'
diff --git a/packages/common/src/types.ts b/packages/common/src/types.ts
index ca1b41a..7ae110e 100644
--- a/packages/common/src/types.ts
+++ b/packages/common/src/types.ts
@@ -1,25 +1,25 @@
 /**
  * transform unknown into undefined
  */
-export type TOptional<T> = T extends {} ? T : undefined
+export type Optional<T> = T extends {} ? T : undefined
 
-export type TNonUndefinedPropertyNames<T> = {
+export type NonUndefinedPropertyNames<T> = {
   [K in keyof T]: T[K] extends undefined ? never: K
 }[keyof T]
 
-export type TOnlyRequired<T> = Pick<T, TNonUndefinedPropertyNames<T>>
+export type OnlyRequired<T> = Pick<T, NonUndefinedPropertyNames<T>>
 
-export type TNonUnknownPropertyNames<T> = {
+export type NonUnknownPropertyNames<T> = {
   [K in keyof T]: T[K] extends {} ? K : never
 }[keyof T]
 
-export type TOnlyDefined<T> = Pick<T, TNonUnknownPropertyNames<T>>
+export type OnlyDefined<T> = Pick<T, NonUnknownPropertyNames<T>>
 
 /**
  * Remove types from T that are not assignable to U
  * https://www.typescriptlang.org/docs/handbook/advanced-types.html
  */
-export type TFilter<T, U> = T extends U ? T : never
+export type Filter<T, U> = T extends U ? T : never
 
-export type TReadonlyRecord<K extends string | number | symbol, V> =
+export type ReadonlyRecord<K extends string | number | symbol, V> =
   Readonly<Record<K, V>>
diff --git a/packages/common/src/user/INewUser.ts b/packages/common/src/user/INewUser.ts
deleted file mode 100644
index 94c15cb..0000000
--- a/packages/common/src/user/INewUser.ts
+++ /dev/null
@@ -1,6 +0,0 @@
-import {ICredentials} from '../auth/ICredentials'
-
-export interface INewUser extends ICredentials {
-  firstName: string
-  lastName: string
-}
diff --git a/packages/common/src/user/IUserService.ts b/packages/common/src/user/IUserService.ts
deleted file mode 100644
index c7dc31d..0000000
--- a/packages/common/src/user/IUserService.ts
+++ /dev/null
@@ -1,12 +0,0 @@
-import { RPCActions } from '@rondo.dev/jsonrpc'
-import { keys } from 'ts-transformer-keys'
-import { IUser } from './IUser'
-
-export interface IUserService {
-  getProfile(): Promise<IUser>
-  // TODO exposing search by email might be a security concern
-  findUserByEmail(email: string): Promise<IUser | undefined>
-}
-
-export const UserServiceMethods = keys<IUserService>()
-export type UserActions = RPCActions<IUserService, 'userService'>
diff --git a/packages/common/src/user/NewUser.ts b/packages/common/src/user/NewUser.ts
new file mode 100644
index 0000000..9f967fc
--- /dev/null
+++ b/packages/common/src/user/NewUser.ts
@@ -0,0 +1,6 @@
+import {Credentials} from '../auth'
+
+export interface NewUser extends Credentials {
+  firstName: string
+  lastName: string
+}
diff --git a/packages/common/src/user/IUser.ts b/packages/common/src/user/UserProfile.ts
similarity index 70%
rename from packages/common/src/user/IUser.ts
rename to packages/common/src/user/UserProfile.ts
index 273ab85..145dec1 100644
--- a/packages/common/src/user/IUser.ts
+++ b/packages/common/src/user/UserProfile.ts
@@ -1,4 +1,4 @@
-export interface IUser {
+export interface UserProfile {
   id: number
   username: string
   firstName: string
diff --git a/packages/common/src/user/UserService.ts b/packages/common/src/user/UserService.ts
new file mode 100644
index 0000000..ccff59c
--- /dev/null
+++ b/packages/common/src/user/UserService.ts
@@ -0,0 +1,12 @@
+import { RPCActions } from '@rondo.dev/jsonrpc'
+import { keys } from 'ts-transformer-keys'
+import { UserProfile } from './UserProfile'
+
+export interface UserService {
+  getProfile(): Promise<UserProfile>
+  // TODO exposing search by email might be a security concern
+  findUserByEmail(email: string): Promise<UserProfile | undefined>
+}
+
+export const UserServiceMethods = keys<UserService>()
+export type UserActions = RPCActions<UserService, 'userService'>
diff --git a/packages/common/src/user/index.ts b/packages/common/src/user/index.ts
index 5e9ea66..7b36193 100644
--- a/packages/common/src/user/index.ts
+++ b/packages/common/src/user/index.ts
@@ -1,3 +1,3 @@
-export * from './INewUser'
-export * from './IUserService'
-export * from './IUser'
+export * from './NewUser'
+export * from './UserService'
+export * from './UserProfile'
diff --git a/packages/common/src/without.ts b/packages/common/src/without.ts
index da76768..9c9a4a4 100644
--- a/packages/common/src/without.ts
+++ b/packages/common/src/without.ts
@@ -7,7 +7,7 @@ export function without<T, R extends Record<string, T>, K extends keyof R>(
     if (key == k) {
       return obj
     }
-    (obj as any)[k] = items[k]
+    (obj as any)[k] = items[k] // eslint-disable-line
     return obj
   }, {} as Pick<R, Exclude<keyof R, K>>)
 }