xo/dist/lib/resolve-config.js

JavaScript/TypeScript linter (ESLint wrapper) with great defaults

import path from 'node:path';
import process from 'node:process';
import { cosmiconfig, defaultLoaders } from 'cosmiconfig';
import arrify from 'arrify';
import { moduleName } from './constants.js';
/**
Finds the XO config file.
*/
export async function resolveXoConfig(options) {
    try {
        options.cwd ||= process.cwd();
        if (!path.isAbsolute(options.cwd)) {
            options.cwd = path.resolve(process.cwd(), options.cwd);
        }
        const stopDirectory = path.dirname(options.cwd);
        const flatConfigExplorer = cosmiconfig(moduleName, {
            searchPlaces: [
                'package.json',
                `${moduleName}.config.js`,
                `${moduleName}.config.mjs`,
                `${moduleName}.config.ts`,
                `${moduleName}.config.mts`,
            ],
            loaders: {
                '.mts': defaultLoaders['.ts'], // eslint-disable-line @typescript-eslint/naming-convention
            },
            stopDir: stopDirectory,
            cache: true,
        });
        options.filePath &&= path.resolve(options.cwd, options.filePath);
        const searchPath = options.filePath ?? options.cwd;
        let { config: flatOptions = [], filepath: flatConfigPath = '', // eslint-disable-line @typescript-eslint/no-useless-default-assignment
         } = await (options.configPath
            // eslint-disable-next-line @typescript-eslint/no-unsafe-type-assertion
            ? flatConfigExplorer.load(path.resolve(options.cwd, options.configPath))
            // eslint-disable-next-line @typescript-eslint/no-unsafe-type-assertion
            : flatConfigExplorer.search(searchPath)) ?? {};
        flatOptions = arrify(flatOptions);
        return {
            flatOptions,
            flatConfigPath,
        };
    }
    catch (error) {
        // eslint-disable-next-line preserve-caught-error
        throw new AggregateError([error], 'Error resolving XO config, there is likely an issue with your config file. Please check the file for mistakes.');
    }
}
export default resolveXoConfig;
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