diff --git a/homeassistant/components/daikin/__init__.py b/homeassistant/components/daikin/__init__.py
index 95189774a8173..dcdc924fb4a67 100644
--- a/homeassistant/components/daikin/__init__.py
+++ b/homeassistant/components/daikin/__init__.py
@@ -50,7 +50,7 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     return True
 
 
-async def async_unload_entry(hass, entry):
+async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     """Unload a config entry."""
     unload_ok = await hass.config_entries.async_unload_platforms(entry, PLATFORMS)
     if unload_ok:
diff --git a/homeassistant/components/danfoss_air/__init__.py b/homeassistant/components/danfoss_air/__init__.py
index e98545fe1b201..599edbb770304 100644
--- a/homeassistant/components/danfoss_air/__init__.py
+++ b/homeassistant/components/danfoss_air/__init__.py
@@ -7,8 +7,10 @@
 import voluptuous as vol
 
 from homeassistant.const import CONF_HOST, Platform
+from homeassistant.core import HomeAssistant
 from homeassistant.helpers import discovery
 import homeassistant.helpers.config_validation as cv
+from homeassistant.helpers.typing import ConfigType
 from homeassistant.util import Throttle
 
 _LOGGER = logging.getLogger(__name__)
@@ -23,7 +25,7 @@
 )
 
 
-def setup(hass, config):
+def setup(hass: HomeAssistant, config: ConfigType) -> bool:
     """Set up the Danfoss Air component."""
     conf = config[DOMAIN]
 
diff --git a/homeassistant/components/datadog/__init__.py b/homeassistant/components/datadog/__init__.py
index 5d3aae3de2034..47a2d34ec8e87 100644
--- a/homeassistant/components/datadog/__init__.py
+++ b/homeassistant/components/datadog/__init__.py
@@ -12,8 +12,10 @@
     EVENT_STATE_CHANGED,
     STATE_UNKNOWN,
 )
+from homeassistant.core import HomeAssistant
 from homeassistant.helpers import state as state_helper
 import homeassistant.helpers.config_validation as cv
+from homeassistant.helpers.typing import ConfigType
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -41,7 +43,7 @@
 )
 
 
-def setup(hass, config):
+def setup(hass: HomeAssistant, config: ConfigType) -> bool:
     """Set up the Datadog component."""
 
     conf = config[DOMAIN]
diff --git a/homeassistant/components/default_config/__init__.py b/homeassistant/components/default_config/__init__.py
index 506904a500af6..9e6ab26817204 100644
--- a/homeassistant/components/default_config/__init__.py
+++ b/homeassistant/components/default_config/__init__.py
@@ -1,15 +1,18 @@
 """Component providing default configuration for new users."""
+
 try:
     import av
 except ImportError:
     av = None
 
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.typing import ConfigType
 from homeassistant.setup import async_setup_component
 
 DOMAIN = "default_config"
 
 
-async def async_setup(hass, config):
+async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
     """Initialize default configuration."""
     if av is None:
         return True
diff --git a/homeassistant/components/demo/__init__.py b/homeassistant/components/demo/__init__.py
index 3a1fbff2f87f7..5ac1945c18573 100644
--- a/homeassistant/components/demo/__init__.py
+++ b/homeassistant/components/demo/__init__.py
@@ -8,12 +8,15 @@
     async_add_external_statistics,
     get_last_statistics,
 )
+from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import (
     ATTR_ENTITY_ID,
     EVENT_HOMEASSISTANT_START,
     SOUND_PRESSURE_DB,
 )
 import homeassistant.core as ha
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.typing import ConfigType
 import homeassistant.util.dt as dt_util
 
 DOMAIN = "demo"
@@ -51,7 +54,7 @@
 ]
 
 
-async def async_setup(hass, config):
+async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
     """Set up the demo environment."""
     if DOMAIN not in config:
         return True
@@ -249,7 +252,7 @@ async def _insert_statistics(hass):
     async_add_external_statistics(hass, metadata, statistics)
 
 
-async def async_setup_entry(hass, config_entry):
+async def async_setup_entry(hass: HomeAssistant, config_entry: ConfigEntry) -> bool:
     """Set the config entry up."""
     # Set up demo platforms with config entry
     for platform in COMPONENTS_WITH_CONFIG_ENTRY_DEMO_PLATFORM:
diff --git a/homeassistant/components/device_automation/__init__.py b/homeassistant/components/device_automation/__init__.py
index 67ef17dc3792c..3d16290d325da 100644
--- a/homeassistant/components/device_automation/__init__.py
+++ b/homeassistant/components/device_automation/__init__.py
@@ -21,6 +21,7 @@
     entity_registry as er,
 )
 from homeassistant.helpers.frame import report
+from homeassistant.helpers.typing import ConfigType
 from homeassistant.loader import IntegrationNotFound, bind_hass
 from homeassistant.requirements import async_get_integration_with_requirements
 
@@ -93,7 +94,7 @@ async def async_get_device_automations(
     return await _async_get_device_automations(hass, automation_type, device_ids)
 
 
-async def async_setup(hass, config):
+async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
     """Set up device automation."""
     hass.components.websocket_api.async_register_command(
         websocket_device_automation_list_actions
diff --git a/homeassistant/components/device_sun_light_trigger/__init__.py b/homeassistant/components/device_sun_light_trigger/__init__.py
index cb3c10dae7544..a78b34320160a 100644
--- a/homeassistant/components/device_sun_light_trigger/__init__.py
+++ b/homeassistant/components/device_sun_light_trigger/__init__.py
@@ -19,13 +19,14 @@
     SUN_EVENT_SUNRISE,
     SUN_EVENT_SUNSET,
 )
-from homeassistant.core import callback
+from homeassistant.core import HomeAssistant, callback
 import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.event import (
     async_track_point_in_utc_time,
     async_track_state_change,
 )
 from homeassistant.helpers.sun import get_astral_event_next, is_up
+from homeassistant.helpers.typing import ConfigType
 import homeassistant.util.dt as dt_util
 
 DOMAIN = "device_sun_light_trigger"
@@ -58,7 +59,7 @@
 )
 
 
-async def async_setup(hass, config):
+async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
     """Set up the triggers to control lights based on device presence."""
     conf = config[DOMAIN]
     disable_turn_off = conf[CONF_DISABLE_TURN_OFF]
diff --git a/homeassistant/components/dialogflow/__init__.py b/homeassistant/components/dialogflow/__init__.py
index 9473fd537addf..62d84282511e4 100644
--- a/homeassistant/components/dialogflow/__init__.py
+++ b/homeassistant/components/dialogflow/__init__.py
@@ -4,7 +4,9 @@
 from aiohttp import web
 import voluptuous as vol
 
+from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import CONF_WEBHOOK_ID
+from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import HomeAssistantError
 from homeassistant.helpers import config_entry_flow, intent, template
 
@@ -61,7 +63,7 @@ async def handle_webhook(hass, webhook_id, request):
         )
 
 
-async def async_setup_entry(hass, entry):
+async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     """Configure based on config entry."""
     hass.components.webhook.async_register(
         DOMAIN, "DialogFlow", entry.data[CONF_WEBHOOK_ID], handle_webhook
@@ -69,7 +71,7 @@ async def async_setup_entry(hass, entry):
     return True
 
 
-async def async_unload_entry(hass, entry):
+async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     """Unload a config entry."""
     hass.components.webhook.async_unregister(entry.data[CONF_WEBHOOK_ID])
     return True
diff --git a/homeassistant/components/digital_ocean/__init__.py b/homeassistant/components/digital_ocean/__init__.py
index 194841da66229..ed951fa2aa4ea 100644
--- a/homeassistant/components/digital_ocean/__init__.py
+++ b/homeassistant/components/digital_ocean/__init__.py
@@ -6,7 +6,9 @@
 import voluptuous as vol
 
 from homeassistant.const import CONF_ACCESS_TOKEN, Platform
+from homeassistant.core import HomeAssistant
 import homeassistant.helpers.config_validation as cv
+from homeassistant.helpers.typing import ConfigType
 from homeassistant.util import Throttle
 
 _LOGGER = logging.getLogger(__name__)
@@ -37,7 +39,7 @@
 )
 
 
-def setup(hass, config):
+def setup(hass: HomeAssistant, config: ConfigType) -> bool:
     """Set up the Digital Ocean component."""
 
     conf = config[DOMAIN]
diff --git a/homeassistant/components/discovery/__init__.py b/homeassistant/components/discovery/__init__.py
index 595771cd67394..fb7ac2b270dc6 100644
--- a/homeassistant/components/discovery/__init__.py
+++ b/homeassistant/components/discovery/__init__.py
@@ -12,10 +12,11 @@
 from homeassistant import config_entries
 from homeassistant.components import zeroconf
 from homeassistant.const import EVENT_HOMEASSISTANT_STARTED
-from homeassistant.core import callback
+from homeassistant.core import HomeAssistant, callback
 import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.discovery import async_discover, async_load_platform
 from homeassistant.helpers.event import async_track_point_in_utc_time
+from homeassistant.helpers.typing import ConfigType
 from homeassistant.loader import async_get_zeroconf
 import homeassistant.util.dt as dt_util
 
@@ -124,7 +125,7 @@ class ServiceDetails(NamedTuple):
 )
 
 
-async def async_setup(hass, config):
+async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
     """Start a discovery service."""
 
     logger = logging.getLogger(__name__)
diff --git a/homeassistant/components/dominos/__init__.py b/homeassistant/components/dominos/__init__.py
index d39773842552e..b194e8dc908ac 100644
--- a/homeassistant/components/dominos/__init__.py
+++ b/homeassistant/components/dominos/__init__.py
@@ -7,10 +7,11 @@
 import voluptuous as vol
 
 from homeassistant.components import http
-from homeassistant.core import callback
+from homeassistant.core import HomeAssistant, callback
 import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.entity import Entity
 from homeassistant.helpers.entity_component import EntityComponent
+from homeassistant.helpers.typing import ConfigType
 from homeassistant.util import Throttle
 
 _LOGGER = logging.getLogger(__name__)
@@ -62,7 +63,7 @@
 )
 
 
-def setup(hass, config):
+def setup(hass: HomeAssistant, config: ConfigType) -> bool:
     """Set up is called when Home Assistant is loading our component."""
     dominos = Dominos(hass, config)
 
diff --git a/homeassistant/components/dovado/__init__.py b/homeassistant/components/dovado/__init__.py
index 8e4c712e8b4b1..40069a769a112 100644
--- a/homeassistant/components/dovado/__init__.py
+++ b/homeassistant/components/dovado/__init__.py
@@ -12,7 +12,9 @@
     CONF_USERNAME,
     DEVICE_DEFAULT_NAME,
 )
+from homeassistant.core import HomeAssistant
 import homeassistant.helpers.config_validation as cv
+from homeassistant.helpers.typing import ConfigType
 from homeassistant.util import Throttle
 
 _LOGGER = logging.getLogger(__name__)
@@ -36,7 +38,7 @@
 MIN_TIME_BETWEEN_UPDATES = timedelta(seconds=30)
 
 
-def setup(hass, config):
+def setup(hass: HomeAssistant, config: ConfigType) -> bool:
     """Set up the Dovado component."""
 
     hass.data[DOMAIN] = DovadoData(
diff --git a/homeassistant/components/downloader/__init__.py b/homeassistant/components/downloader/__init__.py
index 0adfeaeb94517..9aca80b04da35 100644
--- a/homeassistant/components/downloader/__init__.py
+++ b/homeassistant/components/downloader/__init__.py
@@ -8,8 +8,9 @@
 import requests
 import voluptuous as vol
 
-from homeassistant.core import ServiceCall
+from homeassistant.core import HomeAssistant, ServiceCall
 import homeassistant.helpers.config_validation as cv
+from homeassistant.helpers.typing import ConfigType
 from homeassistant.util import raise_if_invalid_filename, raise_if_invalid_path
 
 _LOGGER = logging.getLogger(__name__)
@@ -42,7 +43,7 @@
 )
 
 
-def setup(hass, config):
+def setup(hass: HomeAssistant, config: ConfigType) -> bool:
     """Listen for download events to download files."""
     download_path = config[DOMAIN][CONF_DOWNLOAD_DIR]
 
diff --git a/homeassistant/components/duckdns/__init__.py b/homeassistant/components/duckdns/__init__.py
index 42f36c5435f25..88b7a676accd9 100644
--- a/homeassistant/components/duckdns/__init__.py
+++ b/homeassistant/components/duckdns/__init__.py
@@ -5,10 +5,11 @@
 import voluptuous as vol
 
 from homeassistant.const import CONF_ACCESS_TOKEN, CONF_DOMAIN
-from homeassistant.core import CALLBACK_TYPE, ServiceCall, callback
+from homeassistant.core import CALLBACK_TYPE, HomeAssistant, ServiceCall, callback
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
 import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.event import async_call_later
+from homeassistant.helpers.typing import ConfigType
 from homeassistant.loader import bind_hass
 from homeassistant.util import dt as dt_util
 
@@ -39,7 +40,7 @@
 SERVICE_TXT_SCHEMA = vol.Schema({vol.Required(ATTR_TXT): vol.Any(None, cv.string)})
 
 
-async def async_setup(hass, config):
+async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
     """Initialize the DuckDNS component."""
     domain = config[DOMAIN][CONF_DOMAIN]
     token = config[DOMAIN][CONF_ACCESS_TOKEN]
diff --git a/homeassistant/components/dweet/__init__.py b/homeassistant/components/dweet/__init__.py
index c076fc81628bb..eb809ff47dfb9 100644
--- a/homeassistant/components/dweet/__init__.py
+++ b/homeassistant/components/dweet/__init__.py
@@ -12,8 +12,10 @@
     EVENT_STATE_CHANGED,
     STATE_UNKNOWN,
 )
+from homeassistant.core import HomeAssistant
 from homeassistant.helpers import state as state_helper
 import homeassistant.helpers.config_validation as cv
+from homeassistant.helpers.typing import ConfigType
 from homeassistant.util import Throttle
 
 _LOGGER = logging.getLogger(__name__)
@@ -37,7 +39,7 @@
 )
 
 
-def setup(hass, config):
+def setup(hass: HomeAssistant, config: ConfigType) -> bool:
     """Set up the Dweet.io component."""
     conf = config[DOMAIN]
     name = conf.get(CONF_NAME)