The path module wraps Go's path/filepath package for host-platform path manipulation. It is aliased as both path and node:path. The separator and behavior match the operating system on which the runtime runs.

JavaScript usage

const path = require("path");

const full = path.join("/tmp", "demo", "file.txt");
// "/tmp/demo/file.txt"

const dir = path.dirname("/tmp/demo/file.txt");
// "/tmp/demo"

const base = path.basename("/tmp/demo/file.txt");
// "file.txt"

const ext = path.extname("/tmp/demo/file.txt");
// ".txt"

const abs = path.isAbsolute("/tmp/demo");
// true

const rel = path.relative("/tmp/demo", "/tmp/demo/output");
// "output"

const resolved = path.resolve("demo", ".."); // resolves against cwd

Module API

join(...parts)

Joins path elements into a single path using the OS-specific separator. Cleans up .. and . segments.

resolve(...parts)

Joins path elements and converts the result to an absolute path relative to the current working directory.

dirname(path)

Returns the directory portion of path, excluding the final separator and file name.

basename(path)

Returns the last element of path.

extname(path)

Returns the file extension, including the leading dot. Returns an empty string when there is no extension.

isAbsolute(path)

Returns true if path is absolute on the current platform.

relative(from, to)

Returns the shortest relative path from from to to.

path.separator

string — the OS path separator (/ on Unix, \ on Windows).

path.delimiter

string — the OS path list delimiter (: on Unix, ; on Windows).

Troubleshooting