feat: add WASM-based DOT transaction parsing and explanation#8074
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feat: add WASM-based DOT transaction parsing and explanation#8074
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Add @bitgo/wasm-dot integration for parsing, explaining, and building DOT transactions using Rust/WASM instead of @polkadot/api. - wasmParser.ts: adapter that maps wasm-dot's explainTransaction() output to BitGoJS TransactionExplanation format (type mapping, output/input extraction, fee handling) - wasmBuilderByteComparison.ts: tests verifying WASM-built transactions produce byte-identical signing payloads to legacy txwrapper-polkadot - Covers: transfers, staking (bond/unbond/withdraw/chill), proxy (add/remove), and batch transactions BTC-0 TICKET: BTC-0
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Summary
Add
@bitgo/wasm-dotintegration tosdk-coin-dotfor parsing, explaining, and building DOT transactions using Rust/WASM instead of@polkadot/api/@substrate/txwrapper-polkadot.What's included
wasmParser.ts— Thin adapter (explainDotTransaction) that callswasm-dot'sexplainTransaction()and maps the output to BitGoJS'sTransactionExplanationformat. Analogous toexplainSolTransactionfor Solana.dot.tswiring —Dot.explainTransaction()delegates to WASM for testnet (tdot), falls back to legacyTransactionBuilderfor mainnet (dot). Same pattern as Solana'ssol.ts.wasmBuilderByteComparison.ts— Tests verifying WASM-built transactions produce byte-identical signing payloads to legacytxwrapper-polkadot.Test plan