Method constructor

src/utils/Cursor.ts:153–160

(
    readonly measuredText: MeasuredText,
    offset: number = 0,
    readonly selection: number = 0,
  )

export class Cursor {
  readonly offset: number
  constructor(
    readonly measuredText: MeasuredText,
    offset: number = 0,
    readonly selection: number = 0,
  ) {
    // it's ok for the cursor to be 1 char beyond the end of the string
    this.offset = Math.max(0, Math.min(this.text.length, offset))
  }

  static fromText(
    text: string,