Method convert

src/common/stringUtils.ts:77–87

* Converts from a base 0 line and column to a file offset.

(position: IPosition)

   * Converts from a base 0 line and column to a file offset.
   */
  public convert(position: IPosition) {
    const base0 = position.base0;
    if (base0.lineNumber > this.lines.length) {
      return this.source.length;
    }

    const thisLine = this.lines[base0.lineNumber];
    const nextLine = this.lines[base0.lineNumber + 1] ?? this.source.length + 1;

    return thisLine + Math.min(nextLine - thisLine - 1, base0.columnNumber);
  }
}