cache-header-string

cache-header-string

Tiny cache control header utility that parses human readable time strings into seconds.

Time based values use Template Literal Types to avoid passing invalid time string formats.

Installation

npm install cache-header-string

Usage

return new Response(..., {
  headers: {
    // sets cache control header to "public, max-age=604800, stale-while-revalidate=31536000"
    'Cache-Control': cacheHeader({
      public: true,
      maxAge: '1week',
      staleWhileRevalidate: '1year'
    })
  }
})

TimeString format

Any number followed by a timestring keyword:

• ms, milli, millisecond, milliseconds - will parse to milliseconds
• s, sec, secs, second, seconds - will parse to seconds
• m, min, mins, minute, minutes - will parse to minutes
• h, hr, hrs, hour, hours - will parse to hours
• d, day, days - will parse to days
• w, week, weeks - will parse to weeks
• mon, mth, mths, month, months - will parse to months
• y, yr, yrs, year, years - will parse to years