update

package/node_modules/bin-links/lib/link-mans.js

@@ -0,0 +1,53 @@
+const { dirname, relative, join, resolve, basename } = require('path')
+const linkGently = require('./link-gently.js')
+const manTarget = require('./man-target.js')
+
+const linkMans = async ({ path, pkg, top, force }) => {
+  const target = manTarget({ path, top })
+  if (!target || !Array.isArray(pkg?.man) || !pkg.man.length) {
+    return []
+  }
+
+  const links = []
+  // `new Set` to filter out duplicates
+  for (let man of new Set(pkg.man)) {
+    if (!man || typeof man !== 'string') {
+      continue
+    }
+    // break any links to c:\\blah or /foo/blah or ../blah
+    man = join('/', man).replace(/\\|:/g, '/').slice(1)
+    const parseMan = man.match(/\.([0-9]+)(\.gz)?$/)
+    if (!parseMan) {
+      throw Object.assign(new Error('invalid man entry name\n' +
+        'Man files must end with a number, ' +
+        'and optionally a .gz suffix if they are compressed.'
+      ), {
+        code: 'EBADMAN',
+        path,
+        pkgid: pkg._id,
+        man,
+      })
+    }
+
+    const section = parseMan[1]
+    const base = basename(man)
+    const absFrom = resolve(path, man)
+    /* istanbul ignore if - that unpossible */
+    if (absFrom.indexOf(path) !== 0) {
+      throw Object.assign(new Error('invalid man entry'), {
+        code: 'EBADMAN',
+        path,
+        pkgid: pkg._id,
+        man,
+      })
+    }
+
+    const to = resolve(target, 'man' + section, base)
+    const from = relative(dirname(to), absFrom)
+
+    links.push(linkGently({ from, to, path, absFrom, force }))
+  }
+  return Promise.all(links)
+}
+
+module.exports = linkMans