Function deleteRange

src/cli/components/editor-logic.ts:46–50

(text: string, from: number, to: number)

/** Delete the half-open range [from,to) (order-independent). Returns text + cursor at range start. */
export function deleteRange(text: string, from: number, to: number): { text: string; cursor: number } {
  const a = Math.max(0, Math.min(from, to));
  const b = Math.min(text.length, Math.max(from, to));
  return { text: text.slice(0, a) + text.slice(b), cursor: a };
}

/** Replace the range [from,to) with `s`. Returns text + cursor after the inserted text. */
export function replaceRange(text: string, from: number, to: number, s: string): { text: string; cursor: number } {