all files / Services/ validation-helper.service.ts

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import { Injectable } from '@angular/core';
 
import { StringHelper } from './string-helper.service';
 
@Injectable()
export class ValidationHelper {
 
    constructor(
        private stringHelper: StringHelper) {
    }
 
    stringIsNotNullOrEmpty(input: string, err: string): void {
 
        if (this.stringHelper.isNullOrEmpty(input)) {
 
            throw err;
        }
    }
}