feat(evm-oracle): add Solidity contract that we can use to expose the Nibiru Oracle in the ChainLink interface

CHANGELOG.md

@@ -63,6 +63,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - [#2144](https://github.com/NibiruChain/nibiru/pull/2144) - feat(token-registry): Implement strongly typed Nibiru Token Registry and generation command
 - [#2145](https://github.com/NibiruChain/nibiru/pull/2145) - chore(token-registry): add xNIBI Astrovault LST to registry
 - [#2147](https://github.com/NibiruChain/nibiru/pull/2147) - fix(simapp): manually add x/vesting Cosmos-SDK module types to the codec in simulation tests since they are expected by default
+- [#2149](https://github.com/NibiruChain/nibiru/pull/2149) - feat(evm-oracle):
+add Solidity contract that we can use to expose the Nibiru Oracle in the
+ChainLink interface. Publish all precompiled contracts and ABIs on npm under
+the `@nibiruchain/solidity` package.
 - [#2151](https://github.com/NibiruChain/nibiru/pull/2151) - feat(evm): randao support for evm
 - [#2152](https://github.com/NibiruChain/nibiru/pull/2152) - fix(precompile): consume gas for precompile calls regardless of error
 

evm-e2e/package.json

@@ -27,6 +27,7 @@
     "typechain": "^8.3.2",
     "@nomicfoundation/hardhat-toolbox": "^5.0.0",
     "@openzeppelin/contracts": "^5.1.0",
+    "@nibiruchain/solidity": "^0.0.2",
     "hardhat": "^2.22.15"
   },
   "scripts": {

justfile

@@ -39,6 +39,9 @@ gen-embeds:
   npx hardhat compile
   log_success "Compiled Solidity in $embeds_dir"
 
+  go run "gen-abi/main.go"
+  log_success "Saved ABI JSON files to $embeds_dir/abi for npm publishing"
+
 alias gen-proto := proto-gen
 
 # Generate the Nibiru Token Registry files

x/evm/embeds/README.md

@@ -1,8 +1,21 @@
-# Nibiru Contract Embeds
+# @nibiruchain/solidity
+
+Nibiru EVM solidity contracts and ABIs for Nibiru-specific precompiles and core protocol functionality.
+
+## Install
+
+```bash
+yarn add @nibiruchain/solidity
+
+# OR npm install OR bun install
+```
+
+Solidity code is in "@nibiruchain/solidity/contracts/*", and 
+ABI JSON files are in "@nibiruchain/solidity/abi/*".
 
 ## Hacking
 
-```shell
+```bash
 npm install
 npx hardhat compile
 ```

x/evm/embeds/abi/ChainLinkAggregatorV3Interface.json

@@ -0,0 +1,113 @@
+[
+  {
+    "inputs": [],
+    "name": "decimals",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "description",
+    "outputs": [
+      {
+        "internalType": "string",
+        "name": "",
+        "type": "string"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint80",
+        "name": "_roundId",
+        "type": "uint80"
+      }
+    ],
+    "name": "getRoundData",
+    "outputs": [
+      {
+        "internalType": "uint80",
+        "name": "roundId",
+        "type": "uint80"
+      },
+      {
+        "internalType": "int256",
+        "name": "answer",
+        "type": "int256"
+      },
+      {
+        "internalType": "uint256",
+        "name": "startedAt",
+        "type": "uint256"
+      },
+      {
+        "internalType": "uint256",
+        "name": "updatedAt",
+        "type": "uint256"
+      },
+      {
+        "internalType": "uint80",
+        "name": "answeredInRound",
+        "type": "uint80"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "latestRoundData",
+    "outputs": [
+      {
+        "internalType": "uint80",
+        "name": "roundId",
+        "type": "uint80"
+      },
+      {
+        "internalType": "int256",
+        "name": "answer",
+        "type": "int256"
+      },
+      {
+        "internalType": "uint256",
+        "name": "startedAt",
+        "type": "uint256"
+      },
+      {
+        "internalType": "uint256",
+        "name": "updatedAt",
+        "type": "uint256"
+      },
+      {
+        "internalType": "uint80",
+        "name": "answeredInRound",
+        "type": "uint80"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "version",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  }
+]