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const chalk = require('chalk');
const cosmiconfig = require('cosmiconfig');
const resolvePath = require('resolve').sync;
const webpackLog = require('webpack-log');
const LoadConfigError = require('./LoadConfigError');
const RequireModuleError = require('./RequireModuleError');
const cwd = process.cwd();
const { loadJs } = cosmiconfig;
const prefix = 'webpack';
const cosmicOptions = {
loaders: {
'.es6': loadJs,
'.flow': loadJs,
'.mjs': loadJs,
'.ts': loadJs,
},
searchPlaces: [
`${prefix}.config.js`,
`${prefix}.config.es6`,
`${prefix}.config.flow`,
`${prefix}.config.mjs`,
`${prefix}.config.ts`,
`.${prefix}rc`,
'package.json',
`.${prefix}rc.json`,
`.${prefix}rc.yaml`,
`.${prefix}rc.yml`,
],
};
module.exports = (options = {}) => {
const log = webpackLog({ name: 'config', id: 'webpack-config-loader' });
const requires = [].concat(options.require).filter((r) => !!r);
// eslint-disable-next-line no-param-reassign
options = Object.assign({ cwd: process.cwd() }, options);
for (const module of requires) {
try {
const modulePath = resolvePath(module, { basedir: cwd });
log.info(chalk`Requiring the {cyan ${module}} module`);
if (options.requireOptions) {
const { requireOptions } = options;
// eslint-disable-next-line import/no-dynamic-require, global-require
require(modulePath)(requireOptions);
} else {
// eslint-disable-next-line import/no-dynamic-require, global-require
require(modulePath);
}
} catch (e) {
log.error(chalk`An error occurred while requiring: {grey ${module}}`);
throw new RequireModuleError(e, module);
}
}
let config = {};
let { configPath } = options;
const explorer = cosmiconfig(prefix, cosmicOptions);
try {
let result;
if (configPath) {
result = explorer.loadSync(configPath) || {};
} else {
result = explorer.searchSync(options.cwd) || {};
}
({ config, filepath: configPath } = result);
log.debug(chalk`Found config at {grey ${configPath}}`);
} catch (e) {
/* istanbul ignore else */
if (configPath) {
log.error(chalk`An error occurred while trying to load {grey ${configPath}}
Did you forget to specify a --require?`);
} else {
log.error(chalk`An error occurred while trying to find a config file
Did you forget to specify a --require?`);
}
throw new LoadConfigError(e, configPath);
}
if (!configPath && !options.allowMissing) {
// prettier-ignore
log.error(chalk`Unable to load a config from: {grey ${options.cwd}}`);
const e = new Error(`Unable to load a config from: ${options.cwd}`);
throw new LoadConfigError(e, configPath);
} else {
config = config || {};
configPath = configPath || '';
}
return { config, configPath };
};
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