slidevjs/slidev · error · TypeError

Invalid timestamp unit: ${unit}

Error message

Invalid timestamp unit: ${unit}

What it means

The unit-based parser only recognizes a fixed set of units (s/sec/secs, m/min/mins, h/hr/hrs/hour/hours, day/days, week/weeks, month/months, year/years). Any other suffix throws.

Source

Thrown at packages/parser/src/timesplit/timestring.ts:94

      days: 86400,
      week: 604800,
      weeks: 604800,
      month: 2629746,
      months: 2629746,
      year: 31556952,
      years: 31556952,
    }
    const regex = /([\d.]+)([a-z]+)/gi
    const matches = timestamp.matchAll(regex)
    if (matches) {
      for (const match of matches) {
        const value = Number(match[1])
        if (Number.isNaN(value)) {
          throw new TypeError(`Invalid timestamp value: ${match[1]}`)
        }
        const unit = match[2].toLowerCase()
        if (!(unit in unitMap)) {
          throw new TypeError(`Invalid timestamp unit: ${unit}`)
        }
        seconds += value * unitMap[unit]
      }
    }
    const remaining = timestamp.replace(regex, '').trim()
    if (remaining) {
      throw new TypeError(`Unknown timestamp remaining: ${remaining}`)
    }
  }

  return {
    seconds,
    relative,
  }
}

View on GitHub (pinned to 0d798ace58)

Solutions

1. Use one of the supported unit names (s, sec, m, min, h, hr, day, week, month, year and plurals)
2. Convert sub-second values to a fractional second (0.5s)
3. Double-check the spelling of the unit

Example fix

// before
timesplit: 5ms
// after
timesplit: 0.005s

const SUPPORTED_UNITS = new Set(['s','sec','secs','m','min','mins','h','hr','hrs','hour','hours','day','days','week','weeks','month','months','year','years'])
function validUnits(ts: string): boolean {
  return Array.from(ts.matchAll(/([\d.]+)([a-z]+)/gi)).every(m => SUPPORTED_UNITS.has(m[2].toLowerCase()))
}

function isSupportedUnit(u: string): u is string {
  const set = new Set(['s','sec','secs','m','min','mins','h','hr','hrs','hour','hours','day','days','week','weeks','month','months','year','years'])
  return set.has(u.toLowerCase())
}

When it happens

Trigger: Writing 5ms (milliseconds unsupported), 5secounds (typo), or any unrecognized unit string.

Common situations: Typos, assuming ms/us are supported, locale-specific abbreviations.

Related errors

• Invalid timestamp format
• Invalid timestamp value: ${match[1]}
• Unknown timestamp remaining: ${remaining}
• Timesplit end ${end} is before start ${ts}
• Invalid aspect ratio "${str}"

AI-assisted analysis of slidevjs/slidev@0d798ace58 (2026-08-12). Data as JSON: /api/errors/0aebd03ab2c97857. Report an issue: GitHub.