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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.// This module is browser compatible.
import type { FormatInputPathObject } from "../_interface.ts";
export function _format(  sep: string,  pathObject: FormatInputPathObject,): string {  const dir: string | undefined = pathObject.dir || pathObject.root;  const base: string = pathObject.base ||    (pathObject.name || "") + (pathObject.ext || "");  if (!dir) return base;  if (base === sep) return dir;  if (dir === pathObject.root) return dir + base;  return dir + sep + base;}
export function assertArg(pathObject: FormatInputPathObject) {  if (pathObject === null || typeof pathObject !== "object") {    throw new TypeError(      `The "pathObject" argument must be of type Object. Received type ${typeof pathObject}`,    );  }}