feat: enable the decorators compiler option.

This quenches a warning during compilation.

Author: mprobst

tools/broccoli/broccoli-typescript.ts

@@ -41,6 +41,7 @@ class DiffingTSCompiler implements DiffingBroccoliPlugin {
  this.tsOpts = Object.create(options);
  this.tsOpts.outDir = this.cachePath;
  this.tsOpts.target = (<any>ts).ScriptTarget[options.target];
+ this.tsOpts.experimentalDecorators = true;
  this.rootFilePaths = options.rootFilePaths ? options.rootFilePaths.splice(0) : [];
  this.tsServiceHost = new CustomLanguageServiceHost(this.tsOpts, this.rootFilePaths,
  this.fileRegistry, this.inputPath);