@0x/subproviders/lib/src/utils/subprovider_utils.js

A few useful web3 subproviders including a LedgerSubprovider useful for adding Ledger Nano S support.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.prependSubprovider = void 0;
/**
 * Prepends a subprovider to a provider
 * @param provider    Given provider
 * @param subprovider Subprovider to prepend
 */
function prependSubprovider(provider, subprovider) {
    subprovider.setEngine(provider);
    // HACK: We use implementation details of provider engine here
    // https://github.com/MetaMask/provider-engine/blob/master/index.js#L68
    provider._providers = [subprovider, ...provider._providers];
}
exports.prependSubprovider = prependSubprovider;
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