zerion-sdk/dist/esm/src/util.js

A Typed Interface for ZerionAPI

import { getAddress, parseUnits } from "viem";
// eslint-disable-next-line @typescript-eslint/no-explicit-any
export function buildQueryString(params) {
    const query = {};
    for (const [key, value] of Object.entries(params)) {
        if (value === undefined || value === null)
            continue; // Skip undefined or null values
        if (Array.isArray(value)) {
            query[key] = value.join(","); // Join arrays with commas
        }
        else {
            query[key] = value.toString();
        }
    }
    return new URLSearchParams(query).toString();
}
export function polygonNativeAssetImplementation() {
    // Skip Recognition of MRC20 Token Contract:
    // https://polygonscan.com/address/0x0000000000000000000000000000000000001010
    // This token has a payable transfer function and messes shit up.
    return [
        {
            chain_id: "polygon",
            address: null,
            decimals: 18,
        },
    ];
}
export function scientificToDecimal(num) {
    // If not in scientific notation, return as is
    if (!/^\d+\.?\d*e[+-]*\d+$/i.test(num.toString())) {
        return num.toString();
    }
    const parts = num.toString().toLowerCase().split("e");
    const mantissa = parts[0];
    const exponent = parseInt(parts[1], 10);
    // Remove decimal point from mantissa if exists
    const [whole = "", decimal = ""] = mantissa.split(".");
    const mantissaWithoutPoint = whole + decimal;
    if (exponent > 0) {
        const zerosToAdd = exponent - decimal.length;
        return mantissaWithoutPoint + "0".repeat(Math.max(0, zerosToAdd));
    }
    else {
        const absExponent = Math.abs(exponent);
        return `0.${"0".repeat(absExponent - 1)}${mantissaWithoutPoint}`;
    }
}
export function zerionToTokenBalance(userToken) {
    const { meta, balances } = userToken;
    const chainId = userToken.chain.chainId;
    return {
        ...(chainId ? { chainId } : {}),
        tokenAddress: meta.contractAddress || null,
        token: {
            name: meta.name,
            symbol: meta.symbol,
            decimals: meta.decimals,
            logoUri: meta.tokenIcon || "",
        },
        balance: parseUnits(scientificToDecimal(balances.balance), meta.decimals).toString(),
        fiatBalance: balances.usdBalance.toFixed(2),
        fiatConversion: (balances.price || 0).toFixed(2),
    };
}
// Helper function to convert array of UserTokens to TokenBalances
export function zerionToTokenBalances(userTokens) {
    return userTokens
        .filter((token) => !token.meta.isSpam) // Filter out spam tokens
        .map(zerionToTokenBalance);
}
// CoW (and many other Dex Protocols use this to represent native asset).
export const NATIVE_ASSET = getAddress("0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE");
export function isNativeAsset(token) {
    return token.toLowerCase() === NATIVE_ASSET.toLowerCase();
}