ox
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JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.InvalidDecimalNumberError = exports.exponents = void 0;
exports.format = format;
exports.formatEther = formatEther;
exports.formatGwei = formatGwei;
exports.from = from;
exports.fromEther = fromEther;
exports.fromGwei = fromGwei;
const Errors = require("./Errors.js");
exports.exponents = {
wei: 0,
gwei: 9,
szabo: 12,
finney: 15,
ether: 18,
};
function format(value, decimals = 0) {
let display = value.toString();
const negative = display.startsWith('-');
if (negative)
display = display.slice(1);
display = display.padStart(decimals, '0');
let [integer, fraction] = [
display.slice(0, display.length - decimals),
display.slice(display.length - decimals),
];
fraction = fraction.replace(/(0+)$/, '');
return `${negative ? '-' : ''}${integer || '0'}${fraction ? `.${fraction}` : ''}`;
}
function formatEther(wei, unit = 'wei') {
return format(wei, exports.exponents.ether - exports.exponents[unit]);
}
function formatGwei(wei, unit = 'wei') {
return format(wei, exports.exponents.gwei - exports.exponents[unit]);
}
function from(value, decimals = 0) {
if (!/^(-?)([0-9]*)\.?([0-9]*)$/.test(value))
throw new InvalidDecimalNumberError({ value });
let [integer = '', fraction = '0'] = value.split('.');
const negative = integer.startsWith('-');
if (negative)
integer = integer.slice(1);
fraction = fraction.replace(/(0+)$/, '');
if (decimals === 0) {
if (Math.round(Number(`.${fraction}`)) === 1)
integer = `${BigInt(integer) + 1n}`;
fraction = '';
}
else if (fraction.length > decimals) {
const [left, unit, right] = [
fraction.slice(0, decimals - 1),
fraction.slice(decimals - 1, decimals),
fraction.slice(decimals),
];
const rounded = Math.round(Number(`${unit}.${right}`));
if (rounded > 9)
fraction = `${BigInt(left) + BigInt(1)}0`.padStart(left.length + 1, '0');
else
fraction = `${left}${rounded}`;
if (fraction.length > decimals) {
fraction = fraction.slice(1);
integer = `${BigInt(integer) + 1n}`;
}
fraction = fraction.slice(0, decimals);
}
else {
fraction = fraction.padEnd(decimals, '0');
}
return BigInt(`${negative ? '-' : ''}${integer}${fraction}`);
}
function fromEther(ether, unit = 'wei') {
return from(ether, exports.exponents.ether - exports.exponents[unit]);
}
function fromGwei(gwei, unit = 'wei') {
return from(gwei, exports.exponents.gwei - exports.exponents[unit]);
}
class InvalidDecimalNumberError extends Errors.BaseError {
constructor({ value }) {
super(`Value \`${value}\` is not a valid decimal number.`);
Object.defineProperty(this, "name", {
enumerable: true,
configurable: true,
writable: true,
value: 'Value.InvalidDecimalNumberError'
});
}
}
exports.InvalidDecimalNumberError = InvalidDecimalNumberError;
//# sourceMappingURL=Value.js.map