feat: near intents NEP-245 support (#11043)

Author: gomesalexandre

packages/swapper/src/swappers/NearIntentsSwapper/types.ts

@@ -11,14 +11,13 @@ export const nearIntentsSupportedChainIds = [
   KnownChainIds.ArbitrumMainnet,
   KnownChainIds.BaseMainnet,
   KnownChainIds.GnosisMainnet,
+  KnownChainIds.BnbSmartChainMainnet,
+  KnownChainIds.PolygonMainnet,
+  KnownChainIds.AvalancheMainnet,
+  KnownChainIds.OptimismMainnet,
   KnownChainIds.BitcoinMainnet,
   KnownChainIds.DogecoinMainnet,
   KnownChainIds.SolanaMainnet,
-  // TODO(gomes): NEP-245 support - https://github.com/shapeshift/web/issues/11020
-  // KnownChainIds.BnbSmartChainMainnet,
-  // KnownChainIds.PolygonMainnet,
-  // KnownChainIds.AvalancheMainnet,
-  // KnownChainIds.OptimismMainnet,
 ] as const
 
 export type NearIntentsSupportedChainId = (typeof nearIntentsSupportedChainIds)[number]
@@ -28,6 +27,10 @@ export const chainIdToNearIntentsChain: Record<NearIntentsSupportedChainId, stri
   [KnownChainIds.ArbitrumMainnet]: 'arb',
   [KnownChainIds.BaseMainnet]: 'base',
   [KnownChainIds.GnosisMainnet]: 'gnosis',
+  [KnownChainIds.BnbSmartChainMainnet]: 'bsc',
+  [KnownChainIds.PolygonMainnet]: 'pol',
+  [KnownChainIds.AvalancheMainnet]: 'avax',
+  [KnownChainIds.OptimismMainnet]: 'op',
   [KnownChainIds.BitcoinMainnet]: 'btc',
   [KnownChainIds.DogecoinMainnet]: 'doge',
   [KnownChainIds.SolanaMainnet]: 'sol',

packages/swapper/src/swappers/NearIntentsSwapper/utils/helpers/helpers.ts

@@ -6,7 +6,7 @@ import { bnOrZero, isToken } from '@shapeshiftoss/utils'
 import type { TransactionInstruction } from '@solana/web3.js'
 import { zeroAddress } from 'viem'
 
-import type { GetExecutionStatusResponse } from '../../types'
+import type { GetExecutionStatusResponse, TokenResponse } from '../../types'
 import { chainIdToNearIntentsChain } from '../../types'
 import { OneClickService } from '../oneClickService'
 
@@ -39,6 +39,8 @@ export const getNearIntentsAsset = ({
   return `nep141:${nearNetwork}-${contractAddress.toLowerCase()}.omft.near`
 }
 
+const NEP245_CHAINS = ['bsc', 'pol', 'avax', 'op'] as const
+
 export const assetToNearIntentsAsset = async (asset: Asset): Promise<string> => {
   const nearNetwork =
     chainIdToNearIntentsChain[asset.chainId as keyof typeof chainIdToNearIntentsChain]
@@ -47,22 +49,34 @@ export const assetToNearIntentsAsset = async (asset: Asset): Promise<string> =>
     throw new Error(`Unsupported chain for NEAR Intents: ${asset.chainId}`)
   }
 
-  // Solana tokens need lookup from /v0/tokens
-  // Unlike other chains, Solana token IDs can't be generated from contract addresses
-  // because NEAR Intents uses their own internal token registry for Solana SPL tokens
-  if (asset.chainId === solanaChainId && isToken(asset.assetId)) {
+  // NEP-245 chains (BSC, Polygon, Avalanche, Optimism) and Solana require token lookup
+  // Asset IDs use hashed format that can't be generated from contract addresses
+  const requiresLookup =
+    NEP245_CHAINS.includes(nearNetwork as any) || asset.chainId === solanaChainId
+
+  if (requiresLookup) {
     const tokens = await OneClickService.getTokens()
-    const solanaAddress = fromAssetId(asset.assetId).assetReference
-    const match = tokens.find(t => t.blockchain === 'sol' && t.contractAddress === solanaAddress)
+    const contractAddress = isToken(asset.assetId)
+      ? fromAssetId(asset.assetId).assetReference.toLowerCase()
+      : null
+
+    const match = tokens.find((t: TokenResponse) => {
+      if (t.blockchain !== nearNetwork) return false
+      return contractAddress
+        ? t.contractAddress?.toLowerCase() === contractAddress
+        : !t.contractAddress
+    })
 
     if (!match) {
-      throw new Error(`Solana token not found in NEAR Intents: ${solanaAddress}`)
+      throw new Error(
+        `Token not found in NEAR Intents: ${asset.chainId} ${contractAddress || 'native'}`,
+      )
     }
 
     return match.assetId
   }
 
-  // For all other chains: use predictable NEP-141 format
+  // NEP-141 chains (ETH, ARB, BASE, GNOSIS, BTC, DOGE): use predictable format
   const contractAddress = isToken(asset.assetId)
     ? fromAssetId(asset.assetId).assetReference
     : zeroAddress

packages/unchained-client/openapitools.json

@@ -149,7 +149,7 @@
         }
       },
       "arbitrum": {
-        "inputSpec": "https://raw.githubusercontent.com/shapeshift/unchained/develop/node/coinstacks/arbitrum/api/src/swagger.json",
+        "inputSpec": "https://raw.githubusercontent.com/shapeshift/unchained/2551305/node/coinstacks/arbitrum/api/src/swagger.json",
         "generatorName": "typescript-fetch",
         "output": "#{cwd}/src/generated/arbitrum",
         "enablePostProcessFile": true,