* first action! (#1)

node_modules/before-after-hook/lib/add.js

@@ -0,0 +1,46 @@
+module.exports = addHook
+
+function addHook (state, kind, name, hook) {
+  var orig = hook
+  if (!state.registry[name]) {
+    state.registry[name] = []
+  }
+
+  if (kind === 'before') {
+    hook = function (method, options) {
+      return Promise.resolve()
+        .then(orig.bind(null, options))
+        .then(method.bind(null, options))
+    }
+  }
+
+  if (kind === 'after') {
+    hook = function (method, options) {
+      var result
+      return Promise.resolve()
+        .then(method.bind(null, options))
+        .then(function (result_) {
+          result = result_
+          return orig(result, options)
+        })
+        .then(function () {
+          return result
+        })
+    }
+  }
+
+  if (kind === 'error') {
+    hook = function (method, options) {
+      return Promise.resolve()
+        .then(method.bind(null, options))
+        .catch(function (error) {
+          return orig(error, options)
+        })
+    }
+  }
+
+  state.registry[name].push({
+    hook: hook,
+    orig: orig
+  })
+}

node_modules/before-after-hook/lib/register.js

@@ -0,0 +1,28 @@
+module.exports = register
+
+function register (state, name, method, options) {
+  if (typeof method !== 'function') {
+    throw new Error('method for before hook must be a function')
+  }
+
+  if (!options) {
+    options = {}
+  }
+
+  if (Array.isArray(name)) {
+    return name.reverse().reduce(function (callback, name) {
+      return register.bind(null, state, name, callback, options)
+    }, method)()
+  }
+
+  return Promise.resolve()
+    .then(function () {
+      if (!state.registry[name]) {
+        return method(options)
+      }
+
+      return (state.registry[name]).reduce(function (method, registered) {
+        return registered.hook.bind(null, method, options)
+      }, method)()
+    })
+}

node_modules/before-after-hook/lib/remove.js

@@ -0,0 +1,17 @@
+module.exports = removeHook
+
+function removeHook (state, name, method) {
+  if (!state.registry[name]) {
+    return
+  }
+
+  var index = state.registry[name]
+    .map(function (registered) { return registered.orig })
+    .indexOf(method)
+
+  if (index === -1) {
+    return
+  }
+
+  state.registry[name].splice(index, 1)
+}