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// Ported from js-yaml v3.13.1:// https://github.com/nodeca/js-yaml/commit/665aadda42349dcae869f12040d9b10ef18d12da// Copyright 2011-2015 by Vitaly Puzrin. All rights reserved. MIT license.// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
import { repeat } from "./utils.ts";
export class Mark {  constructor(    public name: string,    public buffer: string,    public position: number,    public line: number,    public column: number,  ) {}
  public getSnippet(indent = 4, maxLength = 75): string | null {    if (!this.buffer) return null;
    let head = "";    let start = this.position;
    while (      start > 0 &&      "\x00\r\n\x85\u2028\u2029".indexOf(this.buffer.charAt(start - 1)) === -1    ) {      start -= 1;      if (this.position - start > maxLength / 2 - 1) {        head = " ... ";        start += 5;        break;      }    }
    let tail = "";    let end = this.position;
    while (      end < this.buffer.length &&      "\x00\r\n\x85\u2028\u2029".indexOf(this.buffer.charAt(end)) === -1    ) {      end += 1;      if (end - this.position > maxLength / 2 - 1) {        tail = " ... ";        end -= 5;        break;      }    }
    const snippet = this.buffer.slice(start, end);    return `${repeat(" ", indent)}${head}${snippet}${tail}\n${      repeat(        " ",        indent + this.position - start + head.length,      )    }^`;  }
  public toString(compact?: boolean): string {    let snippet,      where = "";
    if (this.name) {      where += `in "${this.name}" `;    }
    where += `at line ${this.line + 1}, column ${this.column + 1}`;
    if (!compact) {      snippet = this.getSnippet();
      if (snippet) {        where += `:\n${snippet}`;      }    }
    return where;  }}