TypeScript Convert unknown[] to number

I use knex to update and returning number of rows been updated. It seems that knex returning update return unknown[]. But when I do checking using typeof it is actually number.

But apparently Typescript not allowed me to simply convert it.
So below is the solution.

 //change the unknown[] to number[]
 const result = await query.run() as number[]; 
 //check if result is array, and do proper conversion
 const result1 = (Array.isArray(result)) ? result[0]: result;