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import { BigNumber } from '@0x/utils';
import * as _ from 'lodash';
import { maybeBigNumberUtil } from './maybe_big_number';
const coerceBigNumberOrString = (value: any): BigNumber => {
const bn = maybeBigNumberUtil.toMaybeBigNumber(value);
return !!bn ? bn : value;
};
// function implies that the signed order already has been validated
export const orderCoercionUtil = {
// coerces order big number values to the BigNumber version utilized by 0x
coerceFieldsToBigNumbers(obj: any, fields: string[]): any {
const result = _.assign({}, obj);
_.each(fields, field => {
_.update(result, field, (value: string) => {
if (_.isUndefined(value)) {
throw new Error(`Could not find field '${field}' while converting fields to BigNumber.`);
}
return coerceBigNumberOrString(value);
});
});
return result;
},
coerceOrderFieldsToBigNumber: (order: any): any => {
return orderCoercionUtil.coerceFieldsToBigNumbers(order, [
'makerFee',
'takerFee',
'makerAssetAmount',
'takerAssetAmount',
'salt',
'expirationTimeSeconds',
]);
},
coerceOrderArrayFieldsToBigNumber: (orders: any[]): any[] => {
return _.map(orders, (value: any) => {
return orderCoercionUtil.coerceOrderFieldsToBigNumber(value);
});
},
};
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