webpack-diagnostics.ts

/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
import * as webpack from 'webpack';

const WebpackError = require('webpack/lib/WebpackError');
const isWebpackFiveOrHigher = (() => {
  if (typeof webpack.version === 'string') {
    const versionParts = webpack.version.split('.');
    if (versionParts[0] && Number(versionParts[0]) >= 5) {
      return true;
    }
  }

  return false;
})();

export function addWarning(compilation: webpack.compilation.Compilation, message: string): void {
  if (isWebpackFiveOrHigher) {
    compilation.warnings.push(new WebpackError(message));
  } else {
    // Allows building with either Webpack 4 or 5+ types
    // tslint:disable-next-line: no-any
    compilation.warnings.push(message as any);
  }
}

export function addError(compilation: webpack.compilation.Compilation, message: string): void {
  if (isWebpackFiveOrHigher) {
    compilation.errors.push(new WebpackError(message));
  } else {
    // Allows building with either Webpack 4 or 5+ types
    // tslint:disable-next-line: no-any
    compilation.errors.push(new Error(message) as any);
  }
}