47 lines
1.5 KiB
TypeScript
47 lines
1.5 KiB
TypeScript
/** 表单校验错误（key 对应 vue-i18n 文案） */
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export class FormValidationError extends Error {
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readonly key: string;
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constructor(key: string) {
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super(key);
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this.name = 'FormValidationError';
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this.key = key;
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}
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}
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export function resolveFormError(e: unknown, t: (key: string) => string): string {
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if (e instanceof FormValidationError) return t(e.key);
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if (e instanceof Error && e.message.startsWith('err.')) return t(e.message);
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return t('msg.form_invalid');
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}
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/** Nest 默认 4xx 响应里 error 常为 "Bad Request" 等泛化文案，真实原因在 message */
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const GENERIC_HTTP_ERRORS = new Set([
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'Bad Request',
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'Unauthorized',
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'Forbidden',
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'Not Found',
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'Conflict',
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'Unprocessable Entity',
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'Internal Server Error',
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]);
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/** 从 API 错误响应提取可读文案（兼容 GlobalExceptionFilter 与 Nest 默认格式） */
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export function resolveApiError(
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err: unknown,
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t: (key: string) => string,
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fallbackKey = 'msg.save_failed',
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): string {
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const data = (err as { response?: { data?: { error?: string | string[]; message?: string | string[] } } })
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?.response?.data;
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const msgRaw = data?.message;
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const errRaw = data?.error;
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const message = Array.isArray(msgRaw) ? msgRaw.join('；') : msgRaw;
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const error = Array.isArray(errRaw) ? errRaw.join('；') : errRaw;
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if (typeof message === 'string' && message.trim()) {
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if (!error || GENERIC_HTTP_ERRORS.has(error)) return message;
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}
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if (typeof error === 'string' && error.trim() && !GENERIC_HTTP_ERRORS.has(error)) return error;
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return t(fallbackKey);
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}
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