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matter.js

matter.js

Implementation of Matter protocol in typescript with no native dependencies (and very limited dependencies).

This is the JavaScript only Core of the Matter protocol. It is used by other projects to implement Matter Nodes and Clients and add the relevant specific implementations for Network and other elements.

The following features are abstracted away to allow to be implemented environment specific:

  • Network (UDP/MDNS)
  • Crypto (to be split out)
  • Storage
  • Date/Timer
  • Logger (Default uses "console")

Exported functionality

This library exports the Matter protocol functionality as well as some helper functions as named exports:

Export Description
@project-chip/matter.js Exports the API to implement a Device or a Controller.
@project-chip/matter.js/behavior Exports Behavior classes (New API) as framework to implement all relevant Logic for clusters and internal logic. Contains auto-generated class structures and also Cluster default implementations.
@project-chip/matter.js/certificate Exports Certificate (Root-/PAA/PAI/IAC/DA-Certificates) related functionality
@project-chip/matter.js/cluster Exports Matter Cluster definitions and Default Cluster-Handlers
@project-chip/matter.js/codec Exports Codecs for e.g. Matter-Messages
@project-chip/matter.js/common Exports certain common functionalities
@project-chip/matter.js/crypto Exports Crypto related abstract functionality that needs to be implemented platform specific!
@project-chip/matter.js/datatype Exports Matter Data types
@project-chip/matter.js/device Exports Matter Device relevant classes (Legacy API!)
@project-chip/matter.js/devices Exports Matter Device type classes (NEW API!)
@project-chip/matter.js/endpoint Exports Matter Endpoint structure classes (NEW API!)
@project-chip/matter-.js/environment Exports environment functionalities, which handes central functions like MDNS and configuration
@project-chip/matter.js/elements Exports every standard Matter element defined by the Matter Object Model
@project-chip/matter.js/fabric Exports Matter-Fabric functionality
@project-chip/matter.js/interaction Exports Matter Interaction protocol functionality
@project-chip/matter.js/log Exports Logging functionality (based on "console")
@project-chip/matter.js/math Exports Math functionality used by Matter
@project-chip/matter.js/mdns Exports Basic MDNS functionality (uses Network implementation)
@project-chip/matter.js/model Exports a JavaScript version of the Matter data model
@project-chip/matter.js/net Exports Basic Network abstract functionality that needs to be implemented platform specific!
@project-chip/matter.js/node Exports Matter Node functionality which is used as basis for a device or controller (NEW API!). It also contains Matter Interaction model abstractions for the new API.
@project-chip/matter.js/protocol Exports Basic Matter protocol functionality
@project-chip/matter.js/schema Exports Schema definitions and functionality
@project-chip/matter.js/securechannel Exports Secure Channel functionality
@project-chip/matter.js/session Exports Session and Secure-Session functionality
@project-chip/matter.js/spec Exports Matter Specification References
@project-chip/matter.js/storage Exports Basic Storage abstract functionality that needs to be implemented platform specific!
@project-chip/matter.js/time Exports Basic Time/Timer abstract functionality that needs to be implemented platform specific!
@project-chip/matter.js/tlv Exports Matter TLV type definitions
@project-chip/matter.js/util Exports Basic Utility functionality

Both exports and the typings are exported as CommonJS and ES6 modules.

For more details please refer to the API Documentation.

Included Cluster default implementations

Each cluster that has commands also needs to have them implemented based on the chosen feature set.

Matter.js provides a specification-compliant implementation of all Matter 1.3 clusters. For many clusters our implementations perform high-level business logic. For other clusters you provide the needed business logic by extending the matter.js implementation. In all cases matter.js takes care of details like the Matter protocol, input and output validation and persistence. The developer can then decide if own functionality needs to be implemented and can overwrite and extend these implementations or just use them.

For examples for nearly all clusters check the All Clusters Test App.

Matter.js allows the following clusters to be used directly with a default implementation for all relevant commands - or the clusters do not need any commands and so the standard feature set of Matter.js for attributes is sufficient. All clusters contained in this list are also verified using the CI YAML project-chip certification tests.

PICS Cluster name Features Matter-Version Additional Information
ACL Access Control None 1.3 Fully implemented and compliant
CADMIN Administrator Commissioning All 1.3 Internal Root cluster implemented, no need to customize
APBSC Application Basic None 1.3 No command implementations needed
BC Ballast Configuration None 1.3 No command implementations needed, Cluster provisional
BINFO Basic Information None 1.3 Internal Root cluster implemented, no need to customize, all events are automatically emitted by matter.js
BOOL Boolean State None 1.3 No command implementations needed. If the StateChanged event is enabled it is emitted automatically on state change.
BRBINFO Bridged Device Basic Information None 1.3 reachabilityChanged event is automatically emitted by matter.js
CC Color Control All 1.3 Default implementation supports all features.
DESC Descriptor None 1.3 Internal Root cluster implemented, no need to customize, data are automatically managed by matter.js
DGETH Ethernet Network Diagnostics None 1.3 No command implementations needed when used without any features. The cluster data needs to be provided by the platform.
FLABEL Fixed Label None 1.3 No command implementations needed
FLW Flow Measurement None 1.3 No command implementations needed
CGEN General Commissioning None 1.3 Internal Root cluster implemented, provides convenience methods to register and clear Faults and to handle triggered Test Events.
DGGEN General Diagnostics None 1.3 No command implementations needed when used without test event triggers. All mandatory attributes and events supported. Optional attributes, events and Test event triggers needs to be implemented by developer if needed.
I Identify All 1.3 All mandatory commands implemented. Additionally, state isIdentifying and events start/stopIdentifying are available to easiely extend the server.
ILL Illuminance Measurement None 1.3 No command implementations needed
RH Leaf Wetness Measurement None 1.3 No command implementations needed
LVL Level Control All 1.3 Default implementation sets currentLevel and remainingTime attributes by respecting the feature requirements on best-effort basis. Use managedTransitionTimeHandling state to true to use transitions managed by matter.js.
LCFG Localization Configuration None 1.3 The active locale is determined via JavaScript Intl package, can be overridden
LOWPOWER Low Power None 1.3 The default implementation emits the internal event enterLowPowerMode that an implementation can listen too. Alternatively, you can override the sleep command by extending the cluster.
CNET Network Commissioning None 1.3 No command implementations needed when using with Ethernet network, needs custom implementation for Wi-Fi or Thread, see examples
MOD Mode Select OnOff 1.3 Default implementation sets the new mode when change command is used and automatically handles StartUpMode and OnMode.
OCC Occupancy Sensing None 1.3 No command implementations needed
OO OnOff All 1.3 LevelControl-For-Lighting feature is enabled automatically in default implementation. offWithEffect currently ignores requested effects and turns off. onWithRecallGlobalScene currently ignores the global scene and turns on. No special logic is implemented for DeadFrontBehavior feature because too use-case specific but can be used and logic adjusted as needed.
OPCREDS Operational Credentials None 1.3 Internal Root cluster implemented, no need to customize
PS Power Source None 1.3 No command implementations needed. Optional events needs to be emitted by the developer if needed
PSCFG Power Source Configuration None 1.3 No command implementations needed
PWRTL Power Topology None 1.3 No command implementations needed
PRS Pressure Measurement None 1.3 No command implementations needed
PXCFG Proxy Configuration None 1.3 No command implementations needed
PCC Pump Configuration and Control None 1.3 No command implementations needed, Relevant Events need to be enabled and emitted by the developer when needed, Cluster client dependencies are not yet possible with matter.js
RH Relative Humidity Measurement None 1.1 No command implementations needed
SWTCH Switch All 1.3 Matter.js provides a full implementation with all features in a configurable way including release, long- and multi-press detection. Just set currentPosition state and all events will be triggered automatically. Alternatively, an additional state rawPosition is available which will be debounced based on a defined debounce delay. Check the SwitchCluster documentation for the details and additional state values.
TMP Temperature Measurement None 1.3 No command implementations needed
TSUIC Thermostat User Interface None 1.3 No command implementations needed
LTIME Time Format Localization None 1.3 The hour format and calendar type are determined automatically using the JavaScript Intl package.
LUNIT Unit Localization None 1.3 No command implementations needed. If not provided we set Celsius as Temperature unit
ULABEL User Label None 1.3 No command implementations needed
WAKEONLAN WakeOnLan None 1.3 No command implementations needed
WNCV Window Covering All 1.3 All commands for all feature sets are implemented. Movements will by default be executed as fast as possible by just setting the new value, so own movement logic needs to be implemented.

More will come over time and can also be contributed by the community!

Typescript note

To have Typescript and your IDE know all the relevant exported functionality you need to use the following in your tsconfig.json:

{
    compilerOptions: {
        moduleResolution: "node16", // Required to support package.json exports
        module: "node16", // Required to make sure all imports are js
    },
}

Additionally, we recommend using "strictNullChecks": true or better for code quality "strict": true to make sure that all types are correctly determined.

matter.js usage

matter.js is used at the core of those two projects:

  • matternode: a light-weight node.js implementation of a Matter Node
  • matter-node.js: a Matter client / server running on node.js compatible with HA (Android / iOs support in progress)

Building

  • npm run build: Build all code and create CommonJS and ES6 variants in dist directory. This will built incrementally and only build the changed files.
  • npm run build-clean: Clean the dist directory and build all code from scratch

Tests

  • npm run test-node: Run tests in node.js
  • npm run test-web: Run tests in the browser
  • npm run test: Run all tests

test-web will create a /coverage directory containing the test code coverage