@signapps/lib

Pure domain logic for Home Assistant entities — light, sensor, weather, switch, actuator, curtain, motion, scene, and MQTT. No dependencies, no React; just the helpers that the UI cards and apps share.

• Workspace: packages/lib  ·  leaf package (no deps)
• Build: tsc -b --force → dist/

How it works

Each entity type lives in its own subdirectory (src/light/, src/sensor/, …) and exposes helpers for that domain. The light domain is the richest example:

Concern	Helpers
Color	hexToRgb, rgbToHex, clampByte, byteToHex, parseRgbAttribute
Brightness	brightnessToPercent, percentToBrightness, sliderBrightnessValue, BRIGHTNESS_MAX
Capabilities	getLightCapabilities, supportsRgbFromModes, supportsColorTempFromModes, supportsBrightnessFromModes
Service calls	lightRgbServiceData, lightToggleServiceData, lightBrightnessServiceData
Card bindings	resolveLightCardBindings (resolves primary + control entity; HA or MQTT)

Capability detection inspects an entity's supported_color_modes to decide whether it supports RGB, color temperature, and/or brightness — so a card can render only the controls a given light actually supports.

Exports

package.json exports:

Subpath	Contents
.	All domains + parseHaEntityDomain, isRelayActuator, isSwitchLikeDomain, MOCK_ENTITY_IDS, attribute types
./light	The light domain only

Consumed by

@signapps/ui (card components), plus the web admin and dashboard apps.