How do I split a string by numbers while keep the numbers in the first location of each substring?

Question

Say I have a string like this:

1a2b3c4def

I want to split it into the following substrings, or an array:

1. 1a
2. 2b
3. 3c
4. 4debf

Every substring should start with a number character.

Another example:

Input: 1fw3fe.w6=3\657

Output:

1. 1fw
2. 3fe.w
3. 6=
4. 3\
5. 6
6. 5
7. 7

If there is no number in the string, then do nothing.

What functions should I choose?

Update:

No more specific rules, just random input. I forgot to mention, the first character will ALWAYS be a digit. So if there are no more digits, put the whole string in an array.

Answer 1

Simple regex should do

const parts = '1fw3fe.w6=3\657'.match(/\d[^\d]*/g)

 const parts = String.raw`1fw3fe.w6=3\657`.match(/\d[^\d]*/g); console.log(parts);