23 lines
402 B
TypeScript
23 lines
402 B
TypeScript
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import {
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Pipe,
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PipeTransform,
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} from '@angular/core';
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interface User {
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name?: string;
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email: string;
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}
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@Pipe({
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name: 'userName',
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})
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export class UserNamePipe implements PipeTransform {
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transform(user?: User): string {
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if (user == null) {
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return null;
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}
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return user.name == null || user.name.trim() === '' ? user.email : user.name;
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}
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}
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