Challenge #25: 🪄 Execute the magical language

We have already distributed all the gifts! Back at the workshop, preparations for next year are already beginning.

A genius elf is creating a magical programming language 🪄 that will help streamline the delivery of gifts to children in 2025.

Programs always start with the value 0, and the language is a string where each character represents an instruction:

• > Moves to the next instruction
• + Increments the current value by 1
• - Decrements the current value by 1
• [ and ]: Loop. If the current value is 0, jump to the instruction after ]. If it is not 0, go back to the instruction after [
• { and }: Conditional. If the current value is 0, jump to the instruction after }. If it is not 0, continue to the instruction after {

You need to return the value of the program after executing all the instructions.

execute('+++') // 3
execute('+--') // -1
execute('>+++[-]') // 0
execute('>>>+{++}') // 3
execute('+{[-]+}+') // 2
execute('{+}{+}{+}') // 0
execute('------[+]++') // 2
execute('-[++{-}]+{++++}') // 5

Note: A conditional can have a loop inside, and a loop can also have a conditional inside. But two loops or two conditionals are never nested.