apps/Alex2Node
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

discovery: generate capability JSON from the registry

Browse source 
A capability is a descriptor plus what the endpoint declares (device/Capability.ts), and its discovery object is
generated from the two. The new API is bridge.addDevice({ endpointId, name, categories, ... }) and
device.add(PowerController, options): both throw a DeclarationError that names the endpoint, the interface and
the instance (device/validate.ts), and leave the bridge and the device as they were. AlexaInterface is the same
Capability with the 1.x methods on it; it, ActionMapping and the enums moved to src/compat/, Device to src/device/.

What a 1.x caller can observe:
- every endpoint ends with { type: "AlexaInterface", interface: "Alexa", version: "3" } (alexa-interface.html);
  new Alex2MQTT(..., { alexaInterface: false }) leaves it out
- the fields of a capability object come in the order of Amazon's examples; their content is unchanged
- addCapability() with a name that is not an interface throws (1.5.2 announced it with the version "UNKNOWN")
- ActionMapping takes the payload as an object; a JSON string is parsed (1.5.2 sent the string), any other throws
- what Alexa would reject in a 1.x declaration is not refused: device.check() lists it and the bridge logs each
  line once, as "warning: ..." through the log hook, when it answers a discovery
- a device whose JSON cannot be built is left out of the answer and reported as an error event
- PowerController and EndpointHealth are the descriptors and keep ON/OFF and OK/UNREACHABLE; PowerState is new

Tests: six zoo devices declared the 1.x way give the JSON that Alexa accepted from 1.5.2 on 2026-09-28, plus the
Alexa capability. npm test: 85 pass (was 57) in 10-12 s, also on Node 18.20.8 and 20.20.2.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
This commit is contained in:
David 2026-09-28 15:35:46 +00:00
parent aa0ffd64ea
commit c492ef74d1
90 changed files with 5539 additions and 1760 deletions
Download patch file Download diff file Expand all files Collapse all files

24
dist/types/index.d.ts vendored
View file

@ -1,13 +1,19 @@
export { default as Alex2MQTT, DEFAULT_HOST } from "./Alex2Node.js";
export type { Alex2MQTTOptions } from "./Alex2Node.js";
export { default as Device } from "./Device.js";
export { AlexaInterface, AlexaInterfaceType } from "./AlexaInterface.js";
export type { SupportedMode } from "./AlexaInterface.js";
export { ActionMapping, AlexaActions } from "./ActionMapping.js";
export { DisplayCategory } from "./DisplayCategory.js";
export { AlexaStatusMessage, PowerController, EndpointHealth, TemperatureSensorScale, ThermostatMode } from "./AlexaStatusMessage.js";
export { default as Device } from "./device/Device.js";
export type { EndpointDefinition, EndpointJson } from "./device/Device.js";
export { Capability } from "./device/Capability.js";
export type { CapabilityJson, CommonOptions, Declaration } from "./device/Capability.js";
export { registry, DeclarationError, SchemaError } from "./registry/index.js";
export { Alexa, BrightnessController, TemperatureSensor } from "./registry/index.js";
export { PowerController, EndpointHealth } from "./compat/enums.js";
export { asset, text } from "./registry/resources.js";
export { ASSETS as Assets, UNITS_OF_MEASURE as Units, ACTIONS as Actions, STATES as States, DISPLAY_CATEGORIES as DisplayCategories, } from "./registry/index.js";
export type { ActionId, AssetId, DisplayCategoryName, StateId, UnitOfMeasure, ActionsToDirective, AnyDescriptor, CapabilityExtras, Declared, DirectiveDescriptor, EndpointView, EventDescriptor, InterfaceDescriptor, Label, PropertyDescriptor, Semantics, StatesToRange, StatesToValue, Infer, Schema, Temperature, TimeInterval, } from "./registry/index.js";
export { AlexaInterface } from "./compat/AlexaInterface.js";
export type { SupportedMode } from "./compat/AlexaInterface.js";
export { ActionMapping } from "./compat/ActionMapping.js";
export { AlexaActions, AlexaInterfaceType, DisplayCategory, PowerState } from "./compat/enums.js";
export { AlexaStatusMessage, TemperatureSensorScale, ThermostatMode } from "./AlexaStatusMessage.js";
export type { ChangeCause } from "./AlexaStatusMessage.js";
export { AlexaErrorType, AlexaErrorResponse } from "./AlexaErrorResponse.js";
export { registry, DeclarationError, SchemaError } from "./registry/index.js";
export { ASSETS as Assets, UNITS_OF_MEASURE as Units, ACTIONS as Actions, STATES as States, DISPLAY_CATEGORIES as DisplayCategories, } from "./registry/index.js";
export type { ActionId, AssetId, DisplayCategoryName, StateId, UnitOfMeasure, AnyDescriptor, CapabilityExtras, Declared, DirectiveDescriptor, EndpointView, EventDescriptor, InterfaceDescriptor, Label, PropertyDescriptor, Infer, Schema, Temperature, TimeInterval, } from "./registry/index.js";