import { Pipe, PipeTransform, ReflectiveInjector } from '@angular/core';
import { Filters } from '../service/filters';

@Pipe({
  name: 'substr'
})
export class SubstrPipe implements PipeTransform {
  filters
  constructor( filters:Filters){
    this.filters = filters;
  }
  /**
   * @ input 要过滤的输入
   */
  transform = (input,length,suffix): any => {
    return this.filters.substr(input,length,suffix);
  }
}