import { type Chain } from '@tevm/blockchain';
import { type Common } from '@tevm/common';
import { type EvmType } from '@tevm/evm';
import { type StateManager } from '@tevm/state';
/**
 * Options for instantiating a {@link VM}.
 */
export interface VmOpts {
    /**
     * Use a {@link Common} instance
     * if you want to change the chain setup.
     *
     * ### Possible Values
     *
     * - `chain`: all chains supported by `Common` or a custom chain
     * - `hardfork`: `mainnet` hardforks up to the `Paris` hardfork
     * - `eips`: `1559` (usage e.g. `eips: [ 1559, ]`)
     *
     * Note: check the associated `@ethereumjs/evm` instance options
     * documentation for supported EIPs.
     */
    common: Common;
    /**
     * A {@link StateManager} instance to use as the state store
     */
    stateManager: StateManager;
    /**
     * A {@link Blockchain} object for storing/retrieving blocks
     */
    blockchain: Chain;
    evm: EvmType;
    /**
     * If true, create entries in the state tree for the precompiled contracts, saving some gas the
     * first time each of them is called.
     *
     * If this parameter is false, each call to each of them has to pay an extra 25000 gas
     * for creating the account. If the account is still empty after this call, it will be deleted,
     * such that this extra cost has to be paid again.
     *
     * Setting this to true has the effect of precompiled contracts' gas costs matching mainnet's from
     * the very first call, which is intended for testing networks.
     *
     * Default: `false`
     */
    activatePrecompiles?: boolean;
}
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