ccxt
Version:
68 lines (64 loc) • 2.38 kB
JavaScript
;
var num = require('../num.js');
var shortString = require('../shortString.js');
// ----------------------------------------------------------------------------
const guard = {
isBN: (data, type, key) => {
if (!num.isBigInt(data[key]))
throw new Error(`Data and formatter mismatch on ${key}:${type[key]}, expected response data ${key}:${data[key]} to be BN instead it is ${typeof data[key]}`);
},
unknown: (data, type, key) => {
throw new Error(`Unhandled formatter type on ${key}:${type[key]} for data ${key}:${data[key]}`);
},
};
/**
* Formats the given data based on the provided type definition.
*
* @param {any} data - The data to be formatted.
* @param {any} type - The type definition for the data.
* @param {any} [sameType] - The same type definition to be used (optional).
* @returns - The formatted data.
*/
function formatter(data, type, sameType) {
// match data element with type element
return Object.entries(data).reduce((acc, [key, value]) => {
const elType = sameType ?? type[key];
if (!(key in type) && !sameType) {
// no type definition for element return original element
acc[key] = value;
return acc;
}
if (elType === 'string') {
if (Array.isArray(data[key])) {
// long string (felt*)
const arrayStr = formatter(data[key], data[key].map((_) => elType));
acc[key] = Object.values(arrayStr).join('');
return acc;
}
guard.isBN(data, type, key);
acc[key] = shortString.decodeShortString(value);
return acc;
}
if (elType === 'number') {
guard.isBN(data, type, key);
acc[key] = Number(value);
return acc;
}
if (typeof elType === 'function') {
acc[key] = elType(value);
return acc;
}
if (Array.isArray(elType)) {
const arrayObj = formatter(data[key], elType, elType[0]);
acc[key] = Object.values(arrayObj);
return acc;
}
if (typeof elType === 'object') {
acc[key] = formatter(data[key], elType);
return acc;
}
guard.unknown(data, type, key);
return acc;
}, {});
}
module.exports = formatter;