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Published
20 hours ago •
dart-lang
dart-lang
[js-interop] Help users using JS maps
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I have a file (an ABI file) with a list of Map
I load the file in a List<Map>? abi;
I would like to convert toJS all elements in the List<Map> to put in JSArray<JSAny>param of WriteContractParameters JSObject but i don't know how to...
@JS()
extension type WriteContractParameters._(JSObject _) implements JSObject {
external WriteContractParameters({
required JSArray abi,
});
external JSArray abi;
}
The file :
[
{
"inputs": [
{
"internalType": "string",
"name": "name_",
"type": "string"
},
{
"internalType": "string",
"name": "symbol_",
"type": "string"
}
],
"stateMutability": "nonpayable",
"type": "constructor"
},
{
"anonymous": false,
"inputs": [
{
"indexed": true,
"internalType": "address",
"name": "owner",
"type": "address"
},
{
"indexed": true,
"internalType": "address",
"name": "spender",
"type": "address"
},
{
"indexed": false,
"internalType": "uint256",
"name": "value",
"type": "uint256"
}
],
"name": "Approval",
"type": "event"
},
{
"anonymous": false,
"inputs": [
{
"indexed": true,
"internalType": "address",
"name": "from",
"type": "address"
},
{
"indexed": true,
"internalType": "address",
"name": "to",
"type": "address"
},
{
"indexed": false,
"internalType": "uint256",
"name": "value",
"type": "uint256"
}
],
"name": "Transfer",
"type": "event"
},
{
"inputs": [
{
"internalType": "address",
"name": "owner",
"type": "address"
},
{
"internalType": "address",
"name": "spender",
"type": "address"
}
],
"name": "allowance",
"outputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "spender",
"type": "address"
},
{
"internalType": "uint256",
"name": "amount",
"type": "uint256"
}
],
"name": "approve",
"outputs": [
{
"internalType": "bool",
"name": "",
"type": "bool"
}
],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "account",
"type": "address"
}
],
"name": "balanceOf",
"outputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "decimals",
"outputs": [
{
"internalType": "uint8",
"name": "",
"type": "uint8"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "spender",
"type": "address"
},
{
"internalType": "uint256",
"name": "subtractedValue",
"type": "uint256"
}
],
"name": "decreaseAllowance",
"outputs": [
{
"internalType": "bool",
"name": "",
"type": "bool"
}
],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "spender",
"type": "address"
},
{
"internalType": "uint256",
"name": "addedValue",
"type": "uint256"
}
],
"name": "increaseAllowance",
"outputs": [
{
"internalType": "bool",
"name": "",
"type": "bool"
}
],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [],
"name": "name",
"outputs": [
{
"internalType": "string",
"name": "",
"type": "string"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "symbol",
"outputs": [
{
"internalType": "string",
"name": "",
"type": "string"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "totalSupply",
"outputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "to",
"type": "address"
},
{
"internalType": "uint256",
"name": "amount",
"type": "uint256"
}
],
"name": "transfer",
"outputs": [
{
"internalType": "bool",
"name": "",
"type": "bool"
}
],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "from",
"type": "address"
},
{
"internalType": "address",
"name": "to",
"type": "address"
},
{
"internalType": "uint256",
"name": "amount",
"type": "uint256"
}
],
"name": "transferFrom",
"outputs": [
{
"internalType": "bool",
"name": "",
"type": "bool"
}
],
"stateMutability": "nonpayable",
"type": "function"
}
]
Summary: The user wants to convert a List<Map> to a JSArray<JSAny> for use with the WriteContractParameters class, but they are unsure how to do this conversion. The user is working with a file containing a list of Map objects, each representing a function signature for a smart contract.
It works when i hardcode...
final writeContractParameters = WriteContractParameters(
abi: [
{
"inputs".toJS: [
{
"internalType".toJS: "address".toJS,
"name".toJS: "spender".toJS,
"type".toJS: "address".toJS
},
{
"internalType".toJS: "uint256".toJS,
"name".toJS: "amount".toJS,
"type".toJS: "uint256".toJS
}
],
"name".toJS: "approve".toJS,
"outputs".toJS: [
{
"internalType".toJS: "bool".toJS,
"name".toJS: "".toJS,
"type".toJS: "bool".toJS
}
],
"stateMutability".toJS: "nonpayable".toJS,
"type".toJS: "function".toJS
}.jsify(),
].toJS);
If it's a List<Map>, you can just call jsify() on that object and cast the result to JSArray<JSObject>. jsify will do a recursive conversion on the strings, Maps, and Lists.
