@tokenlon/contracts-lib/uniswap/index.js

Common utility functions (e.g., signing order, encoding data) to interact with [Tokenlon contracts](https://github.com/consenlabs/tokenlon-contracts).

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.encodeUniswapV3Path = exports.UniswapV3Fee = void 0;
const FEE_SIZE = 3;
var UniswapV3Fee;
(function (UniswapV3Fee) {
    UniswapV3Fee[UniswapV3Fee["LOWEST"] = 100] = "LOWEST";
    UniswapV3Fee[UniswapV3Fee["LOW"] = 500] = "LOW";
    UniswapV3Fee[UniswapV3Fee["MEDIUM"] = 3000] = "MEDIUM";
    UniswapV3Fee[UniswapV3Fee["HIGH"] = 10000] = "HIGH";
})(UniswapV3Fee = exports.UniswapV3Fee || (exports.UniswapV3Fee = {}));
function encodeUniswapV3Path(path, fees) {
    if (path.length != fees.length + 1) {
        throw new Error("path/fee lengths do not match");
    }
    let encoded = "0x";
    for (let i = 0; i < fees.length; i++) {
        // 20 byte encoding of the address
        encoded += path[i].slice(2);
        // 3 byte encoding of the fee
        encoded += fees[i].toString(16).padStart(2 * FEE_SIZE, "0");
    }
    // encode the final token
    encoded += path[path.length - 1].slice(2);
    return encoded.toLowerCase();
}
exports.encodeUniswapV3Path = encodeUniswapV3Path;
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