@solidstate/hardhat-license-identifier/dist/hooks/config.js

Prepend local Solidity source files with an SPDX License Identifier

const DEFAULT_CONFIG = {
    overwrite: false,
    runOnCompile: false,
    only: [],
    except: [],
};
export default async () => ({
    resolveUserConfig: async (userConfig, resolveConfigurationVariable, next) => {
        return {
            ...(await next(userConfig, resolveConfigurationVariable)),
            licenseIdentifier: {
                ...DEFAULT_CONFIG,
                ...userConfig.licenseIdentifier,
            },
        };
    },
});