feat(fs): add directory support to fs ops

Author: zkat

README.md

@@ -53,12 +53,12 @@ but now it's a package manager runtime!
 * [x] add support for auth and .npmrc
 * [x] implement fs.readdir* (needed for webpack)
 * [x] use spawn-wrap to support child_process calls
-* [ ] warn if installing a package that requires run-scripts
-* [ ] warn if installing something that requires bin/man linking
-* [ ] add support for removing package tarballs from cache
+* [x] add directory support to fs ops
 * [ ] add fallback where "incompatible" packages get dumped into node_modules (and tagged a such in `package-map.json`)
 * [ ] add support for node-gyp build caching to make native packages compatible
 * [ ] add support for bin/man linking
+* [ ] warn if installing a package that requires run-scripts
+* [ ] warn if installing something that requires bin/man linking
 * [ ] benchmark wubwub?
 * [ ] write tests for fs overrides
 * [ ] optimize fs and module load operations (need to analyze)

lib/ensure-package.js

@@ -182,7 +182,15 @@ class CacacheUnpacker extends tar.Parse {
         algorithms: ['sha256']
       })
       cacacheMemo.put.byDigest(this.cache, integrity, data)
-      this.metadata.files[entry.path] = integrity.toString()
+      entry.path.split(/[/\\]+/g).reduce((acc, next, i, sections) => {
+        if (next === '.') { return acc }
+        if (i === sections.length - 1) {
+          acc[next] = integrity.toString()
+        } else {
+          acc[next] = acc[next] || {}
+        }
+        return acc[next]
+      }, this.metadata.files)
       this[UNPEND]()
     } catch (err) {
       this[ONERROR](err, entry)