resolve,

sep,

} = require('path');

const fsBinding = internalBinding('fs');

async function cpFn(src, dest, opts) {

// Warn about using preserveTimestamps on 32-bit node

if (!isAbsolute(resolvedDest)) {

resolvedDest = resolve(dirname(dest), resolvedDest);

}

if (isSrcSubdir(resolvedSrc, resolvedDest)) {

const srcIsDir = fsBinding.internalModuleStat(src) === 1;

if (srcIsDir && isSrcSubdir(resolvedSrc, resolvedDest)) {

throw new ERR_FS_CP_EINVAL({

message: `cannot copy ${resolvedSrc} to a subdirectory of self ` +

`${resolvedDest}`,

);

}

// It allows copying when is not a directory

// It allows cpSync copying symlinks in src to locations in dest with existing synlinks not pointing to a directory.

{

const src = nextdir();

const dest = nextdir();

cpSync(src, dest, mustNotMutateObjectDeep({ recursive: true }));

}

// It allows cp copying symlinks in src to locations in dest with existing synlinks not pointing to a directory.

{

const src = nextdir();

const dest = nextdir();

mkdirSync(src, mustNotMutateObjectDeep({ recursive: true }));

writeFileSync(`${src}/test.txt`, 'test');

symlinkSync(resolve(`${src}/test.txt`), join(src, 'link.txt'));

cp(src, dest, { recursive: true },

mustCall((err) => {

assert.strictEqual(err, null);

cp(src, dest, { recursive: true }, mustCall((err) => {

assert.strictEqual(err, null);

}));

}));

}

// It throws error if symlink in dest points to location in src.

{

const src = nextdir();