sort-subjects-alpha.pipe.ts
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	import { Pipe, PipeTransform } from '@angular/core';
	import { DataMapping } from './models';

	@Pipe({
	name: 'sortSubjectsAlpha'
	})
	export class SortSubjectsAlphaPipe implements PipeTransform {

	transform(dataMappings: DataMapping[]): DataMapping[] {
	if (dataMappings.length > 0){
	dataMappings.sort((a, b) =>{
	return (a.subject < b.subject) ? -1 : 1;
	});
	}
	return dataMappings;
	}

	}