Fix compilation errors in Bar.ts
Fix compilation errors in Bar.ts
dmadeka/bqplot,ChakriCherukuri/bqplot,bloomberg/bqplot,bloomberg/bqplot,SylvainCorlay/bqplot,SylvainCorlay/bqplot,SylvainCorlay/bqplot,ChakriCherukuri/bqplot,dmadeka/bqplot,ChakriCherukuri/bqplot,bloomberg/bqplot