@lodestar/config/lib/chainConfig/index.js

Chain configuration required for lodestar

import { ACTIVE_PRESET } from "@lodestar/params";
import { defaultChainConfig } from "./default.js";
export * from "./default.js";
export { chainConfigFromJson, chainConfigToJson, deserializeBlobSchedule, specValuesToJson } from "./json.js";
export * from "./types.js";
/**
 * Create an `ChainConfig`, filling in missing values with preset defaults
 */
export function createChainConfig(input) {
    const config = {
        // Set the config first with default preset values
        ...defaultChainConfig,
        // Override with input
        ...input,
    };
    // Set SLOT_DURATION_MS if SECONDS_PER_SLOT is provided but SLOT_DURATION_MS is not.
    // This is to provide backward compatibility until Gloas is live
    if (input.SLOT_DURATION_MS === undefined) {
        config.SLOT_DURATION_MS = config.SECONDS_PER_SLOT * 1000;
    }
    // Assert that the preset matches the active preset
    if (config.PRESET_BASE !== ACTIVE_PRESET) {
        throw new Error(`Can only create a config for the active preset: ACTIVE_PRESET=${ACTIVE_PRESET} PRESET_BASE=${config.PRESET_BASE}`);
    }
    return config;
}
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