vue-blocklink
Version:
Vue support for the Blockchain Link browser extension
47 lines (46 loc) • 1.74 kB
JavaScript
import { B } from '../utils';
import * as _ from 'lodash';
export const utils = {
convertHexToNumber(value) {
const valueBigNumber = new B.BigNumber(value);
const valueNumber = valueBigNumber.toNumber();
return valueNumber;
},
convertHexToNumberOrNull(hex) {
if (hex === null) {
return null;
}
const decimal = utils.convertHexToNumber(hex);
return decimal;
},
convertAmountToBigNumber(value) {
const num = value || 0;
const isBigNumber = B.BigNumber.isBigNumber(num);
if (isBigNumber) {
return num;
}
if (_.isString(num) && (num.indexOf('0x') === 0 || num.indexOf('-0x') === 0)) {
return new B.BigNumber(num.replace('0x', ''), 16);
}
const baseTen = 10;
return new B.BigNumber(num.toString(baseTen), baseTen);
},
encodeAmountAsHexString(value) {
const valueBigNumber = utils.convertAmountToBigNumber(value);
const hexBase = 16;
const valueHex = valueBigNumber.toString(hexBase);
return valueBigNumber.isLessThan(0) ? `-0x${valueHex.substr(1)}` : `0x${valueHex}`;
},
numberToHex(value) {
if (!isFinite(value) && !utils.isHexStrict(value)) {
throw new Error(`Given input ${value} is not a number.`);
}
const valueBigNumber = new B.BigNumber(value);
const hexBase = 16;
const result = valueBigNumber.toString(hexBase);
return valueBigNumber.lt(0) ? `-0x${result.substr(1)}` : `0x${result}`;
},
isHexStrict(hex) {
return ((_.isString(hex) || _.isNumber(hex)) && /^(-)?0x[0-9a-f]*$/i.test(_.isNumber(hex) ? hex.toString() : hex));
},
};