Fix babel-preset-es2015

lib/install.js

@@ -55,6 +55,7 @@ module.exports = function install (ctx, pkg, modules, options) {
           .then(_ => mkdirp(join(ctx.root, 'node_modules', '.store')))
           .then(_ => fetchIf(ctx.tmp, target, dist.tarball, dist.shasum))
           .then(_ => recurseDependencies())
+          .then(_ => symlinkSelf())
           .then(_ => unlock(target))
         })
         .then(_ => mkdirp(modules))
@@ -77,6 +78,19 @@ module.exports = function install (ctx, pkg, modules, options) {
     }
   }
 
+  // symlink itself to itself. this way, babel-runtime@5 can
+  // require('babel-runtime') within itself.
+  function symlinkSelf () {
+    if (depth === 0) {
+      return Promise.resolve()
+    } else {
+      return mkdirp(join(target, 'node_modules'))
+        .then(_ => symlink(
+          join('..', '..', fullname),
+          join(target, 'node_modules', name)))
+    }
+  }
+
   function lock (path) {
     if (!ctx.lock) ctx.lock = {}
     ctx.lock[path] = true

notes.txt

@@ -2,6 +2,7 @@ todo:
 
   - [x] put in proper node_modules
   - [ ] npm install "rimraf@>2 <3"
+  - [ ] symlink .bin
   - [ ] scoped modules
 
 how it should look like:

test/index.js

@@ -1,14 +1,13 @@
 var test = require('tape')
 var join = require('path').join
 var prepare = require('./support/prepare')
+var install = require('../bin/unpm-install')
 require('./support/sepia')
 
 test('small with dependencies (rimraf)', function (t) {
   prepare()
-  require('../bin/unpm-install')({
-    input: ['rimraf@2.5.1']
-  })
-  .then(function (res) {
+  install({ input: ['rimraf@2.5.1'] })
+  .then(function () {
     var rimraf = require(join(process.cwd(), 'node_modules', 'rimraf'))
     t.ok(typeof rimraf === 'function', 'rimraf is available')
     t.end()
@@ -17,13 +16,32 @@ test('small with dependencies (rimraf)', function (t) {
 
 test('no dependencies (lodash)', function (t) {
   prepare()
-  require('../bin/unpm-install')({
-    input: ['lodash@4.0.0']
-  })
-  .then(function (res) {
+  install({ input: ['lodash@4.0.0'] })
+  .then(function () {
     var _ = require(join(process.cwd(), 'node_modules', 'lodash'))
     t.ok(typeof _ === 'function', '_ is available')
     t.ok(typeof _.clone === 'function', '_.clone is available')
     t.end()
   }, t.end)
 })
+
+test('idempotency (rimraf)', function (t) {
+  prepare()
+  install({ input: ['rimraf@2.5.1'] })
+  .then(function () { return install({ input: [ 'rimraf@2.5.1' ] }) })
+  .then(function () {
+    var rimraf = require(join(process.cwd(), 'node_modules', 'rimraf'))
+    t.ok(typeof rimraf === 'function', 'rimraf is available')
+    t.end()
+  }, t.end)
+})
+
+test('big with dependencies (babel-preset-2015)', function (t) {
+  prepare()
+  install({ input: ['babel-preset-es2015@6.3.13'] })
+  .then(function () {
+    var b = require(join(process.cwd(), 'node_modules', 'babel-preset-es2015'))
+    t.ok(typeof b === 'object', 'babel-preset-es2015 is available')
+    t.end()
+  }, t.end)
+})