The rangeStart and rangeEnd of prettier.format do not take work

Environments:

• Prettier Version: 2.8.7
• Running Prettier via: Node.js API
• Runtime:Node.js v16.13.1
• Operating System: Windows
• Prettier plugins : prettier

Steps to reproduce:

1. test text (index.less | scss | css)

.d42-visible {
        display: block;
}
.d42-visible {
  display: block;
}
.d42-visible {
    display: block; 
}

.d42-visible {
  display: block;
}

2. code

prettier.format(text, {
  tabWidth: 2,
  useTabs: false,
  rangeStart: 76,
  rangeEnd: 112,
  parser: 'less'
})

Expected behavior:
Remove extra spaces in the third d42-visible

Actual behavior:
The text has not been entered with any changes

PS：(question）

1. The following judgments are undefined.
   

2.Why can't rangeStart be equal to 0? The cursor position I obtained through codemirror can start at 0

Start by running the supplied LESS sample through the prettier.format Node.js API with rangeStart 76 and rangeEnd 112, then compare the output with the expected formatting of the third d42-visible block. Done means the selected range is formatted as expected and the documented behavior for a rangeStart of 0 is clarified or covered by a regression test.