I'm writing a web cryptocurrency web service and trying to encode smart contract parameters with the Etherium js library. I have created a js file and trying to import ethers library that I have installed. When I'm trying to call the created js function I get an error Uncaught SyntaxError: Cannot use import statement outside a module (at encoder.js:4:1) Here is the code

import { ethers } from "ethers";

const AbiCoder = ethers.utils.AbiCoder;
const ADDRESS_PREFIX_REGEX = /^(41)/;
const ADDRESS_PREFIX = "41";

async function encodeParams(inputs) {
    let typesValues = inputs;
    let parameters = "";

    if (typesValues.length == 0) return parameters;
    const abiCoder = new AbiCoder();
    let types = [];
    const values = [];

    for (let i = 0; i < typesValues.length; i  ) {
        let { type, value } = typesValues[i];
        if (type == "address")
            value = value.replace(ADDRESS_PREFIX_REGEX, "0x");
        else if (type == "address[]")
            value = value.map((v) =>
                toHex(v).replace(ADDRESS_PREFIX_REGEX, "0x")
            );
        types.push(type);
        values.push(value);
    }

    console.log(types, values);
    try {
        parameters = abiCoder.encode(types, values).replace(/^(0x)/, "");
    } catch (ex) {
        console.log(ex);
    }
    return parameters;
}

async function main() {
    let inputs = [
        {
            type: "address",
            value: "412ed5dd8a98aea00ae32517742ea5289761b2710e",
        },
        { type: "uint256", value: 50000000000 },
    ];
    let parameters = await encodeParams(inputs);
    console.log(parameters);

    main();
}

Please can someone help me to understand the issue? I'm using Laravel framework. If any additional info is needed I will be happy to provide it.

CodePudding user response：

The problem is in YOU. Have a nice day.