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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.const { lstat, lstatSync, DenoError, ErrorKind } = Deno;/** * Test whether or not the given path exists by checking with the file system */export async function exists(filePath: string): Promise<boolean> {  return lstat(filePath)    .then((): boolean => true)    .catch((err: Error): boolean => {      if (err instanceof DenoError) {        if (err.kind === ErrorKind.NotFound) {          return false;        }      }
      throw err;    });}
/** * Test whether or not the given path exists by checking with the file system */export function existsSync(filePath: string): boolean {  try {    lstatSync(filePath);    return true;  } catch (err) {    if (err instanceof DenoError) {      if (err.kind === ErrorKind.NotFound) {        return false;      }    }    throw err;  }}