hunk.code_window: function _createAotPlugin(wco: WebpackConfigOptions, options: any) {
     const { appConfig, projectRoot, buildOptions } = wco;
     // Read the environment, and set it in the compiler host.
     let hostOverrideFileSystem: any = {};
     // process environment file replacement
     if (appConfig.environments) {
       if (!appConfig.environmentSource) {
         let migrationMessage = '';
         if ('source' in appConfig.environments) {
  
hunk.labels: keep keep keep keep keep replace keep keep keep keep keep
hunk.after_edit:   let hostReplacementPaths: any = {};
  
hunk.file_path: packages/@angular/cli/models/webpack-configs/typescript.ts
hunk.type: replace
file: schema.d.ts