unicorn-components/src/pipes/fill-map.pipe.ts

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import { Pipe, PipeTransform } from '@angular/core';

@Pipe({
    name: 'fillMap'
})
export class UniFillMapPipe implements PipeTransform {

    transform(input: string[], source: { [key: string]: Object } | string = '+'): any {
        return input.map(item => source[item]);
    }
}