Function splitRanges

Splits a source string into ranges:

const ranges = splitRanges("hello;there;fella", ";");

Each range consists of:

{
 text: string  - the text of range
 start: number - start pos of range, wrt to source
 end: number   - end pos of range, wrt to source
 index: number - index of range (starting at 0)
}

splitRanges(source, split): readonly Range[]
Parameters
- source: string
- split: string
Returns readonly Range[]