jackwener/OpenCLI · error · ArgumentError

bilibili comment message cannot be empty

Error message

bilibili comment message cannot be empty

What it means

The comment text is trimmed and must be non-empty; an empty message would be rejected by Bilibili anyway, so the library fails fast with ArgumentError before making any network call.

Source

Thrown at clis/bilibili/comment.js:38

    name: 'comment',
    access: 'write',
    description: '在 B站视频下发表评论或回复（官方 API，需登录；消息里的 @用户 会被解析为真实提及）',
    domain: 'www.bilibili.com',
    strategy: Strategy.COOKIE,
    args: [
        { name: 'bvid', required: true, positional: true, help: 'Video BV ID / URL / b23.tv short link' },
        { name: 'message', required: true, positional: true, help: 'Comment text. Any @username in it is resolved to a real mention' },
        { name: 'parent', type: 'int', help: 'top-level/root rpid to reply under (omit for a top-level comment)' },
        { name: 'execute', type: 'boolean', help: 'Actually post the comment. Without it the command refuses to write.' },
    ],
    columns: ['rpid', 'bvid', 'oid', 'message', 'url'],
    func: async (page, kwargs) => {
        if (!page) {
            throw new CommandExecutionError('Browser session required for bilibili comment');
        }
        const message = String(kwargs.message ?? '').trim();
        if (!message)
            throw new ArgumentError('bilibili comment message cannot be empty');
        // Write guard: posting is public and irreversible-ish, so require an explicit opt-in.
        if (!kwargs.execute)
            throw new ArgumentError('Refusing to post: pass --execute to actually publish this comment');
        const parent = kwargs.parent != null ? readPositiveInteger(kwargs.parent, 'parent') : null;
        let bvid;
        try {
            bvid = await resolveBvid(kwargs.bvid);
        }
        catch (error) {
            throw new ArgumentError(`Cannot resolve Bilibili BV ID from input: ${String(kwargs.bvid ?? '')}`, error instanceof Error ? error.message : String(error));
        }
        // Resolve bvid → aid (the reply API addresses videos by aid, as `oid`)
        const view = await apiGet(page, '/x/web-interface/view', { params: { bvid } });
        const viewData = requireOkPayload(view, 'view');
        const oid = viewData?.aid;
        if (!oid)
            throw new CommandExecutionError(`Cannot resolve aid for bvid: ${bvid}`);
        // Resolve @username mentions to uids. Bilibili only turns "@name" into a real

View on GitHub (pinned to 49907e53dc)

Solutions

1. Pass a non-empty --message value
2. Check that any shell variable/CI input feeding --message is non-empty before running
3. Quote the argument properly so it isn't swallowed
4. Validate message.length > 0 in calling scripts

Example fix

// before
cli bilibili comment --bvid BV1xx --message "$MSG"   # MSG empty
// after
[ -n "$MSG" ] && cli bilibili comment --bvid BV1xx --message "$MSG"

const msg = String(message ?? '').trim();
if (!msg) throw new Error('comment message cannot be empty');

const isNonEmptyString = (v) => typeof v === 'string' && v.trim().length > 0;

try { await commentCmd(); } catch (e) { if (String(e.message).includes('message cannot be empty')) { console.error('Provide a non-empty --message'); } else throw e; }

When it happens

Trigger: Invoking the comment command with --message "" or omitting --message entirely (String(undefined ?? '').trim() yields ''), or passing only whitespace.

Common situations: Shell variable holding the message is empty/unset (e.g. $MSG unset); quoting bug discards the argument; template renders to blank in automation scripts.

Understand the failure class

Background: "Must be a positive integer", "Invalid value", "Unsupported": the invalid-argument-value error family, when a library rejects the value you pass — this error's family across 35 libraries.

Related errors

• ${label} must be a non-negative integer, got ${JSON.stringif
• limit must be a positive integer
• bilibili comment ${label} must be a positive integer
• bilibili unfollow target cannot be empty
• bloomberg businessweek --limit must be an integer between 1

AI-assisted analysis of jackwener/OpenCLI@49907e53dc (2026-08-29). Data as JSON: /api/errors/d9450427dc9317ef. Report an issue: GitHub.