57 lines
1.6 KiB
TypeScript
57 lines
1.6 KiB
TypeScript
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
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// This module is browser compatible.
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import { normalizeString } from "./../_common/normalize_string.ts";
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import { assertPath } from "./../_common/assert_path.ts";
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import { isPosixPathSeparator } from "./_util.ts";
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/**
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* Resolves path segments into a `path`
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* @param pathSegments to process to path
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*/
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export function resolve(...pathSegments: string[]): string {
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let resolvedPath = "";
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let resolvedAbsolute = false;
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for (let i = pathSegments.length - 1; i >= -1 && !resolvedAbsolute; i--) {
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let path: string;
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if (i >= 0) path = pathSegments[i]!;
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else {
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// deno-lint-ignore no-explicit-any
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const { Deno } = globalThis as any;
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if (typeof Deno?.cwd !== "function") {
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throw new TypeError("Resolved a relative path without a CWD.");
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}
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path = Deno.cwd();
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}
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assertPath(path);
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// Skip empty entries
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if (path.length === 0) {
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continue;
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}
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resolvedPath = `${path}/${resolvedPath}`;
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resolvedAbsolute = isPosixPathSeparator(path.charCodeAt(0));
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}
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// At this point the path should be resolved to a full absolute path, but
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// handle relative paths to be safe (might happen when Deno.cwd() fails)
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// Normalize the path
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resolvedPath = normalizeString(
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resolvedPath,
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!resolvedAbsolute,
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"/",
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isPosixPathSeparator,
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);
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if (resolvedAbsolute) {
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if (resolvedPath.length > 0) return `/${resolvedPath}`;
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else return "/";
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} else if (resolvedPath.length > 0) return resolvedPath;
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else return ".";
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}
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