@equinor/fusion-framework-cli/dist/esm/lib/load-dev-server-config.js

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import { importConfig } from '@equinor/fusion-imports';
import { mergeDevServerConfig } from './merge-dev-server-config.js';
/**
 * Helper to define a dev server config function with proper typing.
 * @param fn - The configuration function to be used as the dev server config.
 * @returns The same function, typed as DevServerConfigFn.
 */
export const defineDevServerConfig = (fn) => fn;
/**
 * Loads the dev server configuration from a file or function.
 *
 * @param env - The runtime environment configuration.
 * @param base - The base DevServerOptions to use as defaults.
 * @param options - Optional settings for file name and extensions.
 * @returns A promise resolving to the imported config result.
 *
 * This function uses importConfig to dynamically load the configuration file.
 * If the config export is a function, it is invoked with the environment and a cloned base config.
 * If the config export is an object, it is merged with the base config.
 *
 * Inline comments are provided for maintainability and clarity.
 */
export const loadDevServerConfig = async (env, base, options) => {
    // Use importConfig to load the config file, defaulting to 'dev-server.config' if not specified
    return importConfig(options?.file ?? 'dev-server.config', {
        baseDir: env.root, // Set the base directory for config resolution
        extensions: options?.extensions, // Allow custom file extensions
        script: {
            // Custom resolver for the config module
            resolve: async (module) => {
                // If the default export is a function, call it with env and a cloned base config
                let overrides;
                if (typeof module.default === 'function') {
                    const baseClone = { ...base }; // Clone base to avoid mutation
                    overrides = await module.default(env, { base: baseClone });
                    // TODO: Add zod validation of the config for type safety
                }
                else {
                    overrides = module.default;
                }
                // If the default export is an object, return it or fallback to base
                return mergeDevServerConfig(base, overrides ?? {});
            },
        },
    });
};
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