@mayaprotocol/zcash-js/dist/src/writer.js

Zcash JavaScript library for Maya Protocol - Build and sign Zcash transparent transactions with memo support

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.writeCompactInt = writeCompactInt;
exports.pushData = pushData;
function writeCompactInt(value) {
    if (value < 0xfd) {
        return Buffer.from([value]);
    }
    else if (value <= 0xffff) {
        // 0xFD followed by 16-bit integer
        const buffer = Buffer.alloc(3);
        buffer[0] = 0xfd;
        buffer.writeUInt16LE(value, 1);
        return buffer;
    }
    else if (value <= 0xffffffff) {
        // 0xFE followed by 32-bit integer
        const buffer = Buffer.alloc(5);
        buffer[0] = 0xfe;
        buffer.writeUInt32LE(value, 1);
        return buffer;
    }
    else {
        // 0xFF followed by 64-bit integer
        const buffer = Buffer.alloc(9);
        buffer[0] = 0xff;
        const bigValue = BigInt(value);
        buffer.writeBigUInt64LE(bigValue, 1);
        return buffer;
    }
}
function pushData(length) {
    const buf = Buffer.alloc(2);
    let offset = 0;
    if (length < 0x4c) {
        buf[0] = length;
        offset += 1;
    }
    else {
        buf[0] = 0x4c;
        buf[1] = length;
        offset += 2;
    }
    return buf.subarray(0, offset);
}