message: Make `lessThanOrEqualTo` more concise
  We can just return the expression result directly instead of doing:
  ```
  if (condition) {
  return true;
  }
  return false;
  ```
diff: @@ -40,16 +40,10 @@ export class Position implements PositionInterface {
  this.character = character;
  }
  - lessThanOrEqualTo = (position: PositionInterface): boolean => {
  - if (
  + lessThanOrEqualTo = (position: PositionInterface): boolean => (
  this.line < position.line ||
  (this.line === position.line && this.character <= position.character)
  - ) {
  - return true;
  - }
  -
  - return false;
  - }
  + );
  }
  export function offsetToPosition(text: string, loc: number): Position {
  