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Fixes BigInt parsing losing precision in IntegerInput (#135)
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Pabl0cks authored Jul 22, 2024
1 parent d6025b0 commit 7d80207
Showing 1 changed file with 18 additions and 3 deletions.
21 changes: 18 additions & 3 deletions packages/nextjs/components/scaffold-eth/Contract/utilsContract.tsx
Original file line number Diff line number Diff line change
Expand Up @@ -18,16 +18,31 @@ const isJsonString = (str: string) => {
}
};

const isBigInt = (str: string) => {
if (str.trim().length === 0 || str.startsWith("0")) return false;
try {
BigInt(str);
return true;
} catch (e) {
return false;
}
};

// Recursive function to deeply parse JSON strings, correctly handling nested arrays and encoded JSON strings
const deepParseValues = (value: any): any => {
if (typeof value === "string") {
// first try with bigInt because we losse precision with JSON.parse
if (isBigInt(value)) {
return BigInt(value);
}

if (isJsonString(value)) {
const parsed = JSON.parse(value);
return deepParseValues(parsed);
} else {
// It's a string but not a JSON string, return as is
return value;
}

// It's a string but not a JSON string, return as is
return value;
} else if (Array.isArray(value)) {
// If it's an array, recursively parse each element
return value.map(element => deepParseValues(element));
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