DIYgod/RSSHub · error · InvalidParameterError
Bad type. See <a href="https://docs.rsshub.app/routes/new-me
Error message
Bad type. See <a href="https://docs.rsshub.app/routes/new-media#it-zhi-jia">https://docs.rsshub.app/routes/new-media#it-zhi-jia</a>
What it means
Thrown by the ithome ranking route as `InvalidParameterError('Bad type')` when the `type` path param is not a key in the `type2id` map. Valid types are `24h`, `7days`, `monthly` (mapped to ranking-section ids `d-1`, `d-2`, `d-3`).
Source
Thrown at lib/routes/ithome/ranking.ts:54
const $ = load(response.data);
const config = {
'24h': '24 小时最热',
'7days': '7 天最热',
monthly: '月榜',
};
const type2id = {
'24h': 'd-1',
'7days': 'd-2',
monthly: 'd-3',
};
const title = config[option];
const id = type2id[option];
if (!id) {
throw new InvalidParameterError('Bad type. See <a href="https://docs.rsshub.app/routes/new-media#it-zhi-jia">https://docs.rsshub.app/routes/new-media#it-zhi-jia</a>');
}
const list = $(`#${id} > li`)
.toArray()
.map((item) => {
const info: DataItem = {
title: $(item).find('a').text(),
link: $(item).find('a').attr('href'),
};
return info;
});
const items = await Promise.all(
list.map((item) =>
cache.tryGet(item.link!, async () => {
const res = await got({
method: 'get',
url: item.link,View on GitHub (pinned to bed535e087)
Solutions
- Use one of the valid keys: `/ithome/ranking/24h`, `/ithome/ranking/7days`, `/ithome/ranking/monthly`.
- If a new ranking period is added to ithome's rank page, add the mapping to `type2id` and `config` in lib/routes/ithome/ranking.ts.
Example fix
// before: /ithome/ranking/daily // after: /ithome/ranking/24h
Defensive patterns
Strategy: validation
Validate before calling
const id = type2id[option];
if (!id) throw new InvalidParameterError(`Bad type. Valid: ${Object.keys(type2id).join(', ')}`); Type guard
const isKnownRankingType = (t: string): t is keyof typeof type2id => t in type2id;
Prevention
- Use only 24h / 7days / monthly.
- Surface valid keys in the error.
- Share the type2id map with the route description.
When it happens
Trigger: Request to `/ithome/ranking/:type` where `type` is anything other than `24h`, `7days`, or `monthly` — e.g. `/ithome/ranking/daily`, `/ithome/ranking/year`, or a typo. The check `if (!id)` fires because `type2id[option]` is undefined.
Common situations: User passes a plausible-but-wrong period name (`daily`, `weekly`, `year`); typo; outdated docs.
Related errors
- Bad category. See <a href="https://docs.rsshub.app/routes/ne
- Invalid isekai ranking type: ${type}
- Invalid ranking type: ${type}
- Invalid general ranking type: ${type}
- Invalid genre ranking type: ${type}
AI-assisted analysis of DIYgod/RSSHub@bed535e087 (2026-08-12).
Data as JSON: /api/errors/b3cb25c19bb3ed01.
Report an issue: GitHub.