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index.mjs
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index.mjs
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import path from 'node:path';
import util from 'node:util';
import ora from 'ora';
import fs from 'fs-extra';
import { Command } from 'commander';
import {
renderPackageInfo,
renderSizeTable,
renderTimeTable,
} from './reporter.mjs';
import { bundle, getExternals } from './webpack.mjs';
import {
createEmptyModule,
createIndex,
installDependencies,
} from './createModule.mjs';
import {
createBundleResult,
createDownloadsResult,
createPackageInfo,
} from './createResult.mjs';
const dir = path.resolve('./');
let packageJson = null;
try {
packageJson = JSON.parse(fs.readFileSync(`${dir}/package.json`, 'utf8'));
} catch (_) {
packageJson = {
version: '0.0.1',
};
}
const program = new Command();
program.name(packageJson.name);
program.description('JavaScript package size cost');
program.version(packageJson.version);
program.argument('<packages>');
program
.option('--registry', 'npm registry URL')
.option('--external', 'external dependencies to webpack config')
.option('--explain', 'log webpack stats')
.option('--json', 'log only json format')
.option('--pretty', 'log only pretty print object')
.option(
'--bundle',
'bundle all dependencies with external dependencies and tree shaking'
);
program.parse(process.argv);
(async (args, options) => {
const packages = args[0].split(',');
let spinner = !options.json && ora('Create project').start();
const { TMP } = await createEmptyModule();
await createIndex({ TMP, packages, options });
!options.json && spinner.succeed();
try {
spinner = !options.json && ora('Install dependencies').start();
await installDependencies({ options, TMP, packages });
!options.json && spinner.succeed();
spinner = !options.json && ora('Build bundle').start();
const externals = await getExternals({ options, packages, TMP });
const stats = await bundle({ options, externals, TMP });
!options.json && spinner.succeed();
if (options.explain) {
console.log(
stats.toString({
colors: true,
})
);
}
let result = await createBundleResult({ TMP });
await fs.remove(TMP);
result = await createDownloadsResult({ result, packages });
result = await createPackageInfo({ result, packages, options });
await (!options.json &&
!options.pretty &&
renderSizeTable({ result, packages }));
await (!options.json && !options.pretty && renderTimeTable({ result }));
await (!options.json &&
!options.pretty &&
renderPackageInfo({ result, packages }));
if (options.json) {
console.log(JSON.stringify(result));
}
if (options.pretty) {
console.log(
util.inspect(result, { showHidden: false, depth: null, colors: true })
);
}
} catch (error) {
console.error(error);
await fs.remove(TMP);
}
})(program.args, program.opts());