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Detect chains that dont support PUSH0
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| async function detectPush0Support(rpcs) { | |
| return (await Promise.all(rpcs.map(async rpc => { | |
| try { | |
| const res = await fetch(rpc, { | |
| method: "POST", | |
| headers: { | |
| "Content-Type": "application/json" | |
| }, | |
| body: JSON.stringify({ | |
| "method": "eth_call", | |
| "params": [ | |
| { | |
| "from": null, | |
| "data": "0x604260005260205FF3" | |
| }, | |
| "latest" | |
| ], | |
| "id": 1, | |
| "jsonrpc": "2.0" | |
| }) | |
| }).then(r => r.json()) | |
| if (res.result !== "0x0000000000000000000000000000000000000000000000000000000000000042") { | |
| return rpc | |
| } | |
| } catch (e) { | |
| console.log("error", rpc, String(e)) | |
| } | |
| }))).filter(Boolean) | |
| } | |
| detectPush0Support([ | |
| "https://arb1.arbitrum.io/rpc", | |
| "https://rpc.ankr.com/optimism", | |
| "https://rpc.ankr.com/polygon", | |
| "https://rpc.ankr.com/avalanche", | |
| "https://rpc.ankr.com/fantom", | |
| "https://rpc.mantle.xyz", | |
| ]).then(failedRpcs => console.log("Chains with no PUSH0 support: ", failedRpcs)) |
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