@nomicfoundation/hardhat-keystore/dist/src/internal/hook-handlers/configuration-variables.js

A module for managing keystore files that store a map from IDs to encrypted string values.

import { isCi } from "@nomicfoundation/hardhat-utils/ci";
import { deriveMasterKeyFromKeystore } from "../keystores/encryption.js";
import { askPassword } from "../keystores/password.js";
import { setupKeystoreLoaderFrom } from "../utils/setup-keystore-loader-from.js";
export default async () => {
    // Use a cache with hooks since they may be called multiple times consecutively.
    let keystoreLoader;
    // Caching the masterKey prevents repeated password prompts when retrieving multiple configuration variables.
    let masterKey;
    const handlers = {
        fetchValue: async (context, variable, next) => {
            // If we are in CI, the keystore should not be used
            // or even initialized
            if (isCi()) {
                return next(context, variable);
            }
            if (keystoreLoader === undefined) {
                keystoreLoader = setupKeystoreLoaderFrom(context);
            }
            if (!(await keystoreLoader.isKeystoreInitialized())) {
                return next(context, variable);
            }
            const keystore = await keystoreLoader.loadKeystore();
            if (masterKey === undefined) {
                const password = await askPassword(context.interruptions.requestSecretInput.bind(context.interruptions));
                masterKey = deriveMasterKeyFromKeystore({
                    encryptedKeystore: keystore.toJSON(),
                    password,
                });
            }
            if (!(await keystore.hasKey(variable.name, masterKey))) {
                return next(context, variable);
            }
            return keystore.readValue(variable.name, masterKey);
        },
    };
    return handlers;
};
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