cosmos library

Subpath library: package:era_connect/cosmos.dart — the cosmos chain module plus the shared request/scan plumbing, without the rest of the SDK.

Classes

AnimatedUr

Frame source for rendering a UR as an animated QR.

AnimatedUrOptions

Options for AnimatedUr.

ChainContext

Resolved SDK configuration handed to every chain module.

CosmosChain

Cosmos-SDK zones (and their Ethermint cousins) over the ERA wire.

CosmosDataType

cosmos-sign-request dataType (CBOR key 3).

CosmosSignatureResult

A parsed cosmos-signature/evm-signature reply.

CosmosSignRequestProps

Props for CosmosChain.generateSignRequest.

EraConnectConfig

SDK configuration. Everything is optional; the SDK performs NO network I/O ever.

EthermintSignRequestProps

Ethermint-family chains (Injective, Evmos, Dymension, …) sign with keccak-256 over Ethereum-style keys (m/44'/60'/...) and travel as an evm-sign-request instead.

ExpectedReply

Optional expectations when parsing a reply standalone (outside SignRequest.scanner).

ScanComplete

The scan is complete; ur is the assembled UR.

ScanDuplicate

A frame already seen this session (camera framerate re-reads).

ScanFeedResult

One outcome of feeding a frame to UrScanner.receivePart.

ScanProgress

The frame was consumed; the scan is not complete yet.

ScanRejected

The frame was turned away; see rejection.

ScanRejection

Why a scanned frame was turned away.

SignRequest<TResult>

A built sign request: the UR to display plus everything needed to consume the reply. The request id is minted at CONSTRUCTION so the same object that renders the QR also validates the echo — a reply carrying a different id (from an earlier, cancelled flow re-presented to the camera) is refused instead of accepted.

TypedUrScanner<TResult>

A scanner whose completed UR parses into a typed result (a chain signature).

Ur

An immutable Uniform Resource: a registry type string plus its CBOR payload.

UrScanner

Accumulates camera frames into a UR. Synchronous and non-throwing on the feed path (safe to call from camera callbacks); malformed frames come back as typed rejections, never exceptions.

UrScannerOptions

Options for UrScanner.

Constants

defaultFragmentLength → const int

Default payload bytes per animated-QR fragment.

Functions

resolveContext([EraConnectConfig? config]) → ChainContext

Resolve a (possibly absent) config into the context chain modules consume.

Exceptions / Errors

EraSdkError

Every error thrown by this SDK.