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WebpackCLIPlugin.js
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Sun, Jul 6, 08:01

WebpackCLIPlugin.js
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const { packageExists } = require('../utils/package-exists');
const webpack = packageExists('webpack') ? require('webpack') : undefined;
const logger = require('../utils/logger');
const PluginName = 'webpack-cli';
class WebpackCLIPlugin {
constructor(options) {
this.options = options;
}
async apply(compiler) {
const compilers = compiler.compilers || [compiler];
for (const compiler of compilers) {
if (this.options.progress) {
const { ProgressPlugin } = compiler.webpack || webpack;
let progressPluginExists;
if (compiler.options.plugins) {
progressPluginExists = Boolean(compiler.options.plugins.find((plugin) => plugin instanceof ProgressPlugin));
}
if (!progressPluginExists) {
if (typeof this.options.progress === 'string' && this.options.progress !== 'profile') {
logger.error(
`'${this.options.progress}' is an invalid value for the --progress option. Only 'profile' is allowed.`,
);
process.exit(2);
}
const isProfile = this.options.progress === 'profile';
new ProgressPlugin({ profile: isProfile }).apply(compiler);
}
}
}
const compilationName = (compilation) => (compilation.name ? ` ${compilation.name}` : '');
compiler.hooks.watchRun.tap(PluginName, (compilation) => {
const { bail, watch } = compilation.options;
if (bail && watch) {
logger.warn('You are using "bail" with "watch". "bail" will still exit webpack when the first error is found.');
}
logger.success(`Compilation${compilationName(compilation)} starting...`);
});
compiler.hooks.done.tap(PluginName, (compilation) => {
logger.success(`Compilation${compilationName(compilation)} finished`);
process.nextTick(() => {
if (compiler.watchMode) {
logger.success('watching files for updates...');
}
});
});
}
}
module.exports = WebpackCLIPlugin;

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