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basicResolver.js
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basicResolver.js
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const path = require('path');
const { core, groups } = require('../utils/cli-flags');
const packageExists = require('../utils/package-exists');
const promptInstallation = require('../utils/prompt-installation');
const { yellow } = require('colorette');
const { error, success } = require('../utils/logger');
const WEBPACK_OPTION_FLAGS = core
.filter((coreFlag) => {
return coreFlag.group === groups.BASIC_GROUP;
})
.reduce((result, flagObject) => {
result.push(flagObject.name);
if (flagObject.alias) {
result.push(flagObject.alias);
}
return result;
}, []);
const PRODUCTION = 'production';
const DEVELOPMENT = 'development';
/*
Mode priority:
- Mode flag
- Mode from config
- Mode form NODE_ENV
*/
/**
*
* @param {string} mode - mode flag value
* @param {Object} configObject - contains relevant loaded config
*/
const assignMode = (mode, configObject) => {
const {
env: { NODE_ENV },
} = process;
const { mode: configMode } = configObject;
let finalMode;
if (mode) {
finalMode = mode;
} else if (configMode) {
finalMode = configMode;
} else if (NODE_ENV && (NODE_ENV === PRODUCTION || NODE_ENV === DEVELOPMENT)) {
finalMode = NODE_ENV;
} else {
finalMode = PRODUCTION;
}
return finalMode;
};
const resolveArgs = async (args, configOptions = {}) => {
const { outputPath, stats, json, mode, target, prefetch, hot, analyze } = args;
const finalOptions = {
options: {},
outputOptions: {},
};
Object.keys(args).forEach((arg) => {
if (WEBPACK_OPTION_FLAGS.includes(arg)) {
finalOptions.outputOptions[arg] = args[arg];
}
if (arg === 'devtool') {
finalOptions.options.devtool = args[arg];
}
if (arg === 'name') {
finalOptions.options.name = args[arg];
}
if (arg === 'watch') {
finalOptions.options.watch = true;
}
if (arg === 'entry') {
finalOptions.options[arg] = args[arg];
}
});
if (outputPath) {
finalOptions.options.output = { path: path.resolve(outputPath) };
}
if (stats !== undefined) {
finalOptions.options.stats = stats;
}
if (json) {
finalOptions.outputOptions.json = json;
}
if (hot) {
const { HotModuleReplacementPlugin } = require('webpack');
const hotModuleVal = new HotModuleReplacementPlugin();
if (finalOptions.options && finalOptions.options.plugins) {
finalOptions.options.plugins.unshift(hotModuleVal);
} else {
finalOptions.options.plugins = [hotModuleVal];
}
}
if (prefetch) {
const { PrefetchPlugin } = require('webpack');
const prefetchVal = new PrefetchPlugin(null, args.prefetch);
if (finalOptions.options && finalOptions.options.plugins) {
finalOptions.options.plugins.unshift(prefetchVal);
} else {
finalOptions.options.plugins = [prefetchVal];
}
}
if (analyze) {
if (packageExists('webpack-bundle-analyzer')) {
// eslint-disable-next-line node/no-extraneous-require
const { BundleAnalyzerPlugin } = require('webpack-bundle-analyzer');
const bundleAnalyzerVal = new BundleAnalyzerPlugin();
if (finalOptions.options && finalOptions.options.plugins) {
finalOptions.options.plugins.unshift(bundleAnalyzerVal);
} else {
finalOptions.options.plugins = [bundleAnalyzerVal];
}
} else {
await promptInstallation('webpack-bundle-analyzer', () => {
error(`It looks like ${yellow('webpack-bundle-analyzer')} is not installed.`);
})
.then(() => success(`${yellow('webpack-bundle-analyzer')} was installed sucessfully.`))
.catch(() => {
error(`Action Interrupted, Please try once again or install ${yellow('webpack-bundle-analyzer')} manually.`);
process.exit(2);
});
}
}
if (target) {
finalOptions.options.target = args.target;
}
if (Array.isArray(configOptions)) {
// Todo - handle multi config for all flags
finalOptions.options = configOptions.map(() => ({ ...finalOptions.options }));
configOptions.forEach((configObject, index) => {
finalOptions.options[index].mode = assignMode(mode, configObject);
});
} else {
finalOptions.options.mode = assignMode(mode, configOptions);
}
return finalOptions;
};
module.exports = resolveArgs;