20 lines
659 B
TypeScript
20 lines
659 B
TypeScript
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import { HttpException, Injectable, type PipeTransform, UnprocessableEntityException } from '@nestjs/common';
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@Injectable()
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export class NonEmptyStringPipe implements PipeTransform<string, string> {
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public constructor(
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private readonly name?: string,
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private readonly code: 422 | 423 = 422
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) {}
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public transform(value: unknown): string {
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if (typeof value !== 'string' || value.trim().length === 0) {
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const message = `${this.name ?? '参数'}不能为空`;
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if (this.code === 422) {
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throw new UnprocessableEntityException(message);
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}
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throw new HttpException(message, 423);
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}
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return value.trim();
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}
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}
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