@yoroi/common
Version:
The Common package of Yoroi SDK
50 lines • 1.67 kB
JavaScript
import BigNumber from 'bignumber.js';
import { isRecord } from '../../utils/parsers';
export let StorageReviverType = /*#__PURE__*/function (StorageReviverType) {
StorageReviverType["AsBigInt"] = "AsBigInt";
StorageReviverType["AsBigNumber"] = "AsBigNumber";
return StorageReviverType;
}({});
/**
* Creates a storage deserializer function based on the provided mapping.
* Since BigInt and BigNumber are not supported by JSON.parse, it stores as strings and revive as BigInt or BigNumber.
*
* @param mapping - The mapping of keys to reviver types.
* @returns JSON object revived according to the mapping, string -> BigInt or BigNumber.
*/
export const storageDeserializerMaker = mapping => {
const reviver = (key, value) => {
switch (mapping[key]) {
case StorageReviverType.AsBigInt:
return value == null ? value : BigInt(value);
case StorageReviverType.AsBigNumber:
default:
return value === null ? value : new BigNumber(value);
}
};
const convertProperties = obj => {
if (Array.isArray(obj)) return obj.map(item => convertProperties(item));
if (isRecord(obj)) {
Object.keys(obj).forEach(key => {
obj[key] = convertProperties(obj[key]);
});
return obj;
}
return obj;
};
return jsonString => {
if (jsonString == null) return null;
try {
const parsed = JSON.parse(jsonString, (key, value) => {
if (key && mapping[key]) {
return reviver(key, value);
}
return value;
});
return convertProperties(parsed);
} catch (e) {
return null;
}
};
};
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