Can webpack report which file triggered a compilation in watch mode?

Question

I would like for Webpack to log which file triggered my watch mode build.

I have configured a plugin that listens to the watch-run compiler event hook l

Answer 1

The plugin I used for this in Webpack 4:

class WatchRunPlugin {
  apply(compiler) {
    compiler.hooks.watchRun.tap('WatchRun', (comp) => {
      const changedTimes = comp.watchFileSystem.watcher.mtimes;
      const changedFiles = Object.keys(changedTimes)
        .map(file => `\n  ${file}`)
        .join('');
      if (changedFiles.length) {
        console.log("====================================")
        console.log('NEW BUILD FILES CHANGED:', changedFiles);
        console.log("====================================")
      }
    });
  }
}