ton3-core/dist/utils/numbers.js

TON low-level API tools

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.bitsToBigInt = exports.bitsToBigUint = exports.bitsToIntUint = void 0;
const bitsToBigUint = (bits) => {
    if (!bits.length)
        return { value: 0n, isSafe: true };
    const value = bits
        .slice()
        .reverse()
        .reduce((acc, bit, i) => (BigInt(bit) * (2n ** BigInt(i)) + acc), 0n);
    const isSafe = value <= Number.MAX_SAFE_INTEGER;
    return {
        value,
        isSafe
    };
};
exports.bitsToBigUint = bitsToBigUint;
const bitsToBigInt = (bits) => {
    if (!bits.length)
        return { value: 0n, isSafe: true };
    const { value: uint } = bitsToBigUint(bits);
    const size = BigInt(bits.length);
    const int = 1n << (size - 1n);
    const value = uint >= int ? (uint - (int * 2n)) : uint;
    const isSafe = value >= Number.MIN_SAFE_INTEGER && value <= Number.MAX_SAFE_INTEGER;
    return {
        value,
        isSafe
    };
};
exports.bitsToBigInt = bitsToBigInt;
const bitsToIntUint = (bits, options) => {
    const { type = 'uint' } = options;
    const { value, isSafe } = type === 'uint'
        ? bitsToBigUint(bits)
        : bitsToBigInt(bits);
    if (!isSafe) {
        throw new Error('loaded value does not fit max/min safe integer value, use alternative BigInt methods');
    }
    return Number(value);
};
exports.bitsToIntUint = bitsToIntUint;
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