feat: Add support for linea_estimateGas

[wantedsystem]

Linea, a layer 2 blockchain, supports the Ethereum EIP-1559 gas price model, known for making transaction fees more predictable. Unlike the base Ethereum layer, Linea aims to offer a more stable and cost-effective approach to handling transaction fees. For detailed information, you can visit Linea's Gas Fees Documentation.

To further enhance the efficiency of transaction fee calculations, Linea has introduced a new RPC method designed to provide the best gas price estimates. This new method is documented in detail here.

The introduction of this new RPC method necessitates changes in how web3 libraries calculate gas prices. Traditionally, these libraries used the eth_gasPrice method. Linea's update shifts this approach to utilize the newly introduced linea_estimateGas method.

Detailed summary

• Added linea_estimateGas RPC method to calculate accurate gas price on Linea network
• Updated linea and lineaTestnet definitions to override fee calculation using linea_estimateGas
• Added lineaEstimateGas and lineaEstimateFeesPerGas actions to calculate gas and fees
• Updated types and imports related to fee calculation on Linea network

---

PR-Codex overview

This PR focuses on adding modules for estimating gas fees and fees per gas on the Linea chain.

Detailed summary

• Added modules for lineaEstimateGas and lineaEstimateFeesPerGas
• Defined types for gas estimation and fee calculation
• Updated linea and lineaSepolia chain definitions with fee calculation overrides

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[jxom]

Attempting to test this end-to-end, but I am running into issues on Linea Sepolia that the method linea_estimateGas is not available:

$ curl -X POST https://rpc.sepolia.linea.build \
     -H "Content-Type: application/json" \
     -d '{"id": 1, "jsonrpc": "2.0", "method": "linea_estimateGas", "params": [{"to": "0x70997970c51812dc3a010c7d01b50e0d17dc79c8", "value": "0xde0b6b3a7640000"}]}'
     
> {"jsonrpc":"2.0","id":1,"error":{"code":-32601,"message":"the method linea_estimateGas does not exist/is not available"}}

What RPC URL can I use to test this end-to-end?

[wantedsystem]

Attempting to test this end-to-end, but I am running into issues on Linea Sepolia that the method linea_estimateGas is not available:

$ curl -X POST https://rpc.sepolia.linea.build \
     -H "Content-Type: application/json" \
     -d '{"id": 1, "jsonrpc": "2.0", "method": "linea_estimateGas", "params": [{"to": "0x70997970c51812dc3a010c7d01b50e0d17dc79c8", "value": "0xde0b6b3a7640000"}]}'
     
> {"jsonrpc":"2.0","id":1,"error":{"code":-32601,"message":"the method linea_estimateGas does not exist/is not available"}}

What RPC URL can I use to test this end-to-end?

Hey @jxom It will be available soon -i'll keep you posted

[tmm]

Since there are a few outstanding comments, going to convert this to a draft.

[wantedsystem]

Attempting to test this end-to-end, but I am running into issues on Linea Sepolia that the method linea_estimateGas is not available:

$ curl -X POST https://rpc.sepolia.linea.build \
     -H "Content-Type: application/json" \
     -d '{"id": 1, "jsonrpc": "2.0", "method": "linea_estimateGas", "params": [{"to": "0x70997970c51812dc3a010c7d01b50e0d17dc79c8", "value": "0xde0b6b3a7640000"}]}'
     
> {"jsonrpc":"2.0","id":1,"error":{"code":-32601,"message":"the method linea_estimateGas does not exist/is not available"}}

What RPC URL can I use to test this end-to-end?

You can test now for Linea Mainnet

curl https://rpc.linea.build \
       -X POST \
       -H "Content-Type: application/json" \
       -d '{"jsonrpc": "2.0","method": "linea_estimateGas","params": [{"from": "0x91ba6c8DE41deC8E4d4E1C858f00FaE1819990Ca","gas":"0x21000"}],"id": 53}'

And for Linea Sepolia :

curl https://rpc.sepolia.linea.build \
       -X POST \
       -H "Content-Type: application/json" \
       -d '{"jsonrpc": "2.0","method": "linea_estimateGas","params": [{"from": "0x91ba6c8DE41deC8E4d4E1C858f00FaE1819990Ca","gas":"0x21000"}],"id": 53}'

[wantedsystem]

Attempting to test this end-to-end, but I am running into issues on Linea Sepolia that the method linea_estimateGas is not available:

$ curl -X POST https://rpc.sepolia.linea.build \
     -H "Content-Type: application/json" \
     -d '{"id": 1, "jsonrpc": "2.0", "method": "linea_estimateGas", "params": [{"to": "0x70997970c51812dc3a010c7d01b50e0d17dc79c8", "value": "0xde0b6b3a7640000"}]}'
     
> {"jsonrpc":"2.0","id":1,"error":{"code":-32601,"message":"the method linea_estimateGas does not exist/is not available"}}

What RPC URL can I use to test this end-to-end?

You can test now for Linea Mainnet

curl https://rpc.linea.build \
       -X POST \
       -H "Content-Type: application/json" \
       -d '{"jsonrpc": "2.0","method": "linea_estimateGas","params": [{"from": "0x91ba6c8DE41deC8E4d4E1C858f00FaE1819990Ca","gas":"0x21000"}],"id": 53}'

And for Linea Sepolia :

curl https://rpc.sepolia.linea.build \
       -X POST \
       -H "Content-Type: application/json" \
       -d '{"jsonrpc": "2.0","method": "linea_estimateGas","params": [{"from": "0x91ba6c8DE41deC8E4d4E1C858f00FaE1819990Ca","gas":"0x21000"}],"id": 53}'

Hey @jxom you had the opportunity to test ?

[jxom]

Superseded by https://github.com/wevm/viem/pull/2665