From 285de1ae1925c2b030bd96032498ccbaa6fc90c9 Mon Sep 17 00:00:00 2001
From: Eduardo Julian
Date: Mon, 18 Mar 2019 18:36:18 -0400
Subject: Cobbled together a simple packager.

---
 lux-js/source/program.lux                          |  7 +-
 stdlib/source/lux/host/js.lux                      | 63 +++++++++-----
 stdlib/source/lux/tool/compiler/default/init.lux   | 95 +++++++++++++++-------
 .../lux/tool/compiler/meta/packager/script.lux     | 38 +++++++++
 .../tool/compiler/phase/extension/statement.lux    | 28 +++----
 .../source/lux/tool/compiler/phase/generation.lux  | 49 +++++------
 .../lux/tool/compiler/phase/generation/js/loop.lux |  4 +-
 .../tool/compiler/phase/generation/js/runtime.lux  |  2 +-
 stdlib/source/program/compositor.lux               | 62 ++++++++++++--
 9 files changed, 247 insertions(+), 101 deletions(-)
 create mode 100644 stdlib/source/lux/tool/compiler/meta/packager/script.lux

diff --git a/lux-js/source/program.lux b/lux-js/source/program.lux
index 9cd93a9eb..0a723ec30 100644
--- a/lux-js/source/program.lux
+++ b/lux-js/source/program.lux
@@ -449,15 +449,16 @@
     (wrap [])))
 
 (def: (define! interpreter [module name] input)
-  (-> javax/script/ScriptEngine Name _.Expression (Error [Text Any]))
+  (-> javax/script/ScriptEngine Name _.Expression (Error [Text Any _.Statement]))
   (let [global (format (text.replace-all .module-separator ..separator module)
                        ..separator (name.normalize name)
                        "___" (%n (text/hash name)))
         @global (_.var global)]
     (do error.monad
-      [_ (execute! interpreter global (_.define @global input))
+      [#let [definition (_.define @global input)]
+       _ (execute! interpreter global definition)
        value (evaluate! interpreter global @global)]
-      (wrap [global value]))))
+      (wrap [global value definition]))))
 
 (type: Host
   (generation.Host _.Expression _.Statement))
diff --git a/stdlib/source/lux/host/js.lux b/stdlib/source/lux/host/js.lux
index 7fa3b7123..647e21957 100644
--- a/stdlib/source/lux/host/js.lux
+++ b/stdlib/source/lux/host/js.lux
@@ -1,12 +1,12 @@
 (.module:
-  [lux (#- Code or and function if cond undefined for false true not)
+  [lux (#- Code or and function if cond undefined for comment false true not)
    [control
     [pipe (#+ case>)]]
    [data
     ["." text
      format]
     [collection
-     ["." list ("#;." functor fold)]]]
+     ["." list ("#@." functor fold)]]]
    [macro
     ["." template]]
    [type
@@ -31,6 +31,7 @@
     [Expression Expression' [Code]]
     [Computation Computation' [Expression' Code]]
     [Location Location' [Computation' Expression' Code]]
+    [Statement Statement' [Code]]
     )
 
   (do-template [<type> <brand> <super>+]
@@ -39,7 +40,8 @@
 
     [Var Var' [Location' Computation' Expression' Code]]
     [Access Access' [Location' Computation' Expression' Code]]
-    [Statement Statement' [Code]]
+    [Loop Loop' [Statement' Code]]
+    [Label Label' [Code]]
     )
 
   (do-template [<name> <literal>]
@@ -93,7 +95,7 @@
 
   (def: #export array
     (-> (List Expression) Computation)
-    (|>> (list;map ..code)
+    (|>> (list@map ..code)
          (text.join-with ..argument-separator)
          ..element
          :abstraction))
@@ -115,7 +117,7 @@
   (def: #export (apply/* function inputs)
     (-> Expression (List Expression) Computation)
     (|> inputs
-        (list;map ..code)
+        (list@map ..code)
         (text.join-with ..argument-separator)
         ..argument
         (format (:representation function))
@@ -148,7 +150,7 @@
 
   (def: #export object
     (-> (List [Text Expression]) Computation)
-    (|>> (list;map (.function (_ [key val])
+    (|>> (list@map (.function (_ [key val])
                      (format (:representation (..string key)) ..field-separator (:representation val))))
          (text.join-with ..argument-separator)
          (text.enclose ["{" "}"])
@@ -167,16 +169,16 @@
                           text.new-line
                           (:representation post))))
 
-  ## (def: indent
-  ##   (-> Text Text)
-  ##   (text.replace-all text.new-line (format text.new-line text.tab)))
+  (def: indent
+    (-> Text Text)
+    (text.replace-all text.new-line (format text.new-line text.tab)))
 
   (def: block
     (-> Statement Text)
     (let [close (format text.new-line "}")]
       (|>> :representation
            (format text.new-line)
-           ## ..indent
+           ..indent
            (text.enclose ["{"
                           close]))))
 
@@ -186,7 +188,7 @@
         ..block
         (format "function " (:representation name)
                 (|> inputs
-                    (list;map ..code)
+                    (list@map ..code)
                     (text.join-with ..argument-separator)
                     ..argument)
                 " ")
@@ -199,7 +201,7 @@
         ..block
         (format "function"
                 (|> inputs
-                    (list;map ..code)
+                    (list@map ..code)
                     (text.join-with ..argument-separator)
                     ..argument)
                 " ")
@@ -275,7 +277,7 @@
     (-> Expression (List Expression) Computation)
     (|> (format "new " (:representation constructor)
                 (|> inputs
-                    (list;map ..code)
+                    (list@map ..code)
                     (text.join-with ..argument-separator)
                     ..argument))
         ..argument
@@ -326,12 +328,12 @@
                           (..block then!))))
 
   (def: #export (while test body)
-    (-> Expression Statement Statement)
+    (-> Expression Statement Loop)
     (:abstraction (format "while(" (:representation test) ") "
                           (..block body))))
 
   (def: #export (do-while test body)
-    (-> Expression Statement Statement)
+    (-> Expression Statement Loop)
     (:abstraction (format "do " (..block body)
                           " while(" (:representation test) ")" ..statement-suffix)))
 
@@ -343,16 +345,33 @@
                           (..block catch))))
 
   (def: #export (for var init condition update iteration)
-    (-> Var Expression Expression Expression Statement Statement)
+    (-> Var Expression Expression Expression Statement Loop)
     (:abstraction (format "for(" (:representation (..define var init))
                           " " (:representation condition)
                           ..statement-suffix " " (:representation update)
                           ")"
                           (..block iteration))))
 
-  (def: #export break
-    Statement
-    (:abstraction (format "break" ..statement-suffix)))
+  (def: #export label
+    (-> Text Label)
+    (|>> :abstraction))
+
+  (def: #export (with-label label loop)
+    (-> Label Loop Statement)
+    (:abstraction (format (:representation label) ": " (:representation loop))))
+
+  (do-template [<keyword> <0> <1>]
+    [(def: #export <0>
+       Statement
+       (:abstraction (format <keyword> ..statement-suffix)))
+
+     (def: #export (<1> label)
+       (-> Label Statement)
+       (:abstraction (format <keyword> " " (:representation label) ..statement-suffix)))]
+
+    ["break"    break    break-at]
+    ["continue" continue continue-at]
+    )
 
   (do-template [<name> <js>]
     [(def: #export <name>
@@ -364,11 +383,15 @@
     [++ "++"]
     [-- "--"]
     )
+
+  (def: #export (comment commentary on)
+    (All [kind] (-> Text (Code kind) (Code kind)))
+    (:abstraction (format "/* "  commentary " */" " " (:representation on))))
   )
 
 (def: #export (cond clauses else!)
   (-> (List [Expression Statement]) Statement Statement)
-  (list;fold (.function (_ [test then!] next!)
+  (list@fold (.function (_ [test then!] next!)
                (..if test then! next!))
              else!
              (list.reverse clauses)))
diff --git a/stdlib/source/lux/tool/compiler/default/init.lux b/stdlib/source/lux/tool/compiler/default/init.lux
index 4686441f1..10476cfc5 100644
--- a/stdlib/source/lux/tool/compiler/default/init.lux
+++ b/stdlib/source/lux/tool/compiler/default/init.lux
@@ -1,5 +1,6 @@
 (.module:
   [lux (#- Module)
+   [type (#+ :share)]
    [control
     ["." monad (#+ do)]
     ["ex" exception (#+ exception:)]]
@@ -119,7 +120,10 @@
     (///statement.Operation anchor expression statement a)))
 
 (def: (begin dependencies hash input)
-  (-> (List Module) Nat ///.Input (Operation Source))
+  (-> (List Module) Nat ///.Input
+      (All [anchor expression statement]
+        (///statement.Operation anchor expression statement
+                                [Source (generation.Buffer statement)])))
   (///statement.lift-analysis
    (do ///phase.monad
      [#let [module (get@ #///.module input)]
@@ -128,32 +132,67 @@
       _ (monad.map @ module.import dependencies)
       #let [source (///analysis.source (get@ #///.module input) (get@ #///.code input))]
       _ (///analysis.set-source-code source)]
-     (wrap source))))
+     (wrap [source generation.empty-buffer]))))
 
-(def: end
+(def: (end module)
   (-> Module (Operation Any))
-  (|>> module.set-compiled
-       ///statement.lift-analysis))
+  (do ///phase.monad
+    [_ (///statement.lift-analysis
+        (module.set-compiled module))]
+    (///statement.lift-generation
+     (generation.save-buffer! module))))
 
-(def: (iteration expander reader source)
-  (-> Expander Reader Source (Operation [Source Requirements]))
-  (let [execute! (statementP.phase expander)]
-    (do ///phase.monad
-      [[source code] (///statement.lift-analysis
-                      (..read source reader))
-       requirements (execute! code)
-       _ (..refresh expander)]
-      (wrap [source requirements]))))
-
-(def: (iterate expander module source)
-  (-> Expander Module Source (Operation (Maybe [Source Requirements])))
+## TODO: Inline ASAP
+(def: (get-current-buffer old-buffer)
+  (All [statement]
+    (-> (generation.Buffer statement)
+        (All [anchor expression]
+          (///statement.Operation anchor expression statement
+                                  (generation.Buffer statement)))))
+  (///statement.lift-generation
+   generation.buffer))
+
+## TODO: Inline ASAP
+(def: (process-statement expander pre-buffer code)
+  (All [statement]
+    (-> Expander (generation.Buffer statement) Code
+        (All [anchor expression]
+          (///statement.Operation anchor expression statement
+                                  [Requirements (generation.Buffer statement)]))))
+  (do ///phase.monad
+    [_ (///statement.lift-generation
+        (generation.set-buffer pre-buffer))
+     requirements (let [execute! (statementP.phase expander)]
+                    (execute! code))
+     post-buffer (..get-current-buffer pre-buffer)]
+    (wrap [requirements post-buffer])))
+
+(def: (iteration expander reader source pre-buffer)
+  (All [statement]
+    (-> Expander Reader Source (generation.Buffer statement)
+        (All [anchor expression]
+          (///statement.Operation anchor expression statement
+                                  [Source Requirements (generation.Buffer statement)]))))
+  (do ///phase.monad
+    [[source code] (///statement.lift-analysis
+                    (..read source reader))
+     [requirements post-buffer] (process-statement expander pre-buffer code)
+     _ (..refresh expander)]
+    (wrap [source requirements post-buffer])))
+
+(def: (iterate expander module source pre-buffer)
+  (All [statement]
+    (-> Expander Module Source (generation.Buffer statement)
+        (All [anchor expression]
+          (///statement.Operation anchor expression statement
+                                  (Maybe [Source Requirements (generation.Buffer statement)])))))
   (do ///phase.monad
     [reader (///statement.lift-analysis
              (..reader module //syntax.no-aliases source))]
     (function (_ state)
-      (case (///phase.run' state (..iteration expander reader source))
-        (#error.Success [state source&requirements])
-        (#error.Success [state (#.Some source&requirements)])
+      (case (///phase.run' state (..iteration expander reader source pre-buffer))
+        (#error.Success [state source&requirements&buffer])
+        (#error.Success [state (#.Some source&requirements&buffer)])
 
         (#error.Failure error)
         (if (ex.match? //syntax.end-of-file error)
@@ -177,14 +216,14 @@
          #///.process (function (_ state archive)
                         (do error.monad
                           [#let [hash (text;hash (get@ #///.code input))]
-                           [state source] (<| (///phase.run' state)
-                                              (..begin dependencies hash input))
+                           [state [source buffer]] (<| (///phase.run' state)
+                                                       (..begin dependencies hash input))
                            #let [module (get@ #///.module input)]]
                           (loop [iteration (<| (///phase.run' state)
-                                               (..iterate expander module source))]
+                                               (..iterate expander module source buffer))]
                             (do @
-                              [[state ?source&requirements] iteration]
-                              (case ?source&requirements
+                              [[state ?source&requirements&buffer] iteration]
+                              (case ?source&requirements&buffer
                                 #.None
                                 (do @
                                   [[state analysis-module] (<| (///phase.run' state)
@@ -202,8 +241,8 @@
                                   (wrap [state
                                          (#.Right [[descriptor (document.write key analysis-module)]
                                                    (dictionary.new text.hash)])]))
-                                
-                                (#.Some [source requirements])
+
+                                (#.Some [source requirements buffer])
                                 (wrap [state
                                        (#.Left {#///.dependencies (|> requirements
                                                                       (get@ #///statement.imports)
@@ -213,7 +252,7 @@
                                                                           (do ///phase.monad
                                                                             [_ (monad.map @ execute! (get@ #///statement.referrals requirements))
                                                                              _ (..refresh expander)]
-                                                                            (..iterate expander module source)))))})])
+                                                                            (..iterate expander module source buffer)))))})])
                                 )))))}))))
 
 (def: #export key
diff --git a/stdlib/source/lux/tool/compiler/meta/packager/script.lux b/stdlib/source/lux/tool/compiler/meta/packager/script.lux
new file mode 100644
index 000000000..e51afe7a2
--- /dev/null
+++ b/stdlib/source/lux/tool/compiler/meta/packager/script.lux
@@ -0,0 +1,38 @@
+(.module:
+  [lux #*
+   [data
+    ["." text
+     format
+     ["." encoding]]
+    [collection
+     ["." dictionary]
+     ["." row]
+     ["." list ("#@." functor fold)]]]
+   [host
+    ["_" js]]
+   [tool
+    [compiler
+     [phase
+      [generation (#+ Output)]]]]
+   [world
+    [binary (#+ Binary)]]])
+
+(def: #export (package outputs)
+  (All [statements]
+    (-> (Output statements) Binary))
+  (|> outputs
+      dictionary.entries
+      (list@map (function (_ [module buffer])
+                  (|> buffer
+                      row.to-list
+                      (:coerce (List [Name _.Statement]))
+                      (list@fold (function (_ [artifact content] pre!)
+                                   (|> content
+                                       (_.comment (%name artifact))
+                                       (_.then pre!)))
+                                 (_.comment module
+                                   _.use-strict))
+                      (: _.Statement)
+                      _.code)))
+      (text.join-with text.new-line)
+      encoding.to-utf8))
diff --git a/stdlib/source/lux/tool/compiler/phase/extension/statement.lux b/stdlib/source/lux/tool/compiler/phase/extension/statement.lux
index 18bb58fbd..4f36ef89f 100644
--- a/stdlib/source/lux/tool/compiler/phase/extension/statement.lux
+++ b/stdlib/source/lux/tool/compiler/phase/extension/statement.lux
@@ -36,12 +36,11 @@
         Synthesis
         (Operation anchor expression statement [Type expression Any])))
   (////statement.lift-generation
-   (///generation.with-buffer
-     (do ///.monad
-       [codeT (generate codeS)
-        count ///generation.next
-        codeV (///generation.evaluate! (format "evaluate" (%n count)) codeT)]
-       (wrap [code//type codeT codeV])))))
+   (do ///.monad
+     [codeT (generate codeS)
+      count ///generation.next
+      codeV (///generation.evaluate! (format "evaluate" (%n count)) codeT)]
+     (wrap [code//type codeT codeV]))))
 
 (def: (evaluate! type codeC)
   (All [anchor expression statement]
@@ -71,11 +70,11 @@
         Synthesis
         (Operation anchor expression statement [Type expression Text Any])))
   (////statement.lift-generation
-   (///generation.with-buffer
-     (do ///.monad
-       [codeT (generate codeS)
-        codeN+V (///generation.define! name codeT)]
-       (wrap [code//type codeT codeN+V])))))
+   (do ///.monad
+     [codeT (generate codeS)
+      [target-name value statement] (///generation.define! name codeT)
+      _ (///generation.save! name statement)]
+     (wrap [code//type codeT target-name value]))))
 
 (def: (definition name ?type codeC)
   (All [anchor expression statement]
@@ -270,10 +269,9 @@
         (-> expression statement)
         Synthesis
         (///generation.Operation anchor expression statement Any)))
-  (///generation.with-buffer
-    (do ///.monad
-      [programG (generate programS)]
-      (///generation.save! ["" ""] (program programG)))))
+  (do ///.monad
+    [programG (generate programS)]
+    (///generation.save! ["" ""] (program programG))))
 
 (def: (def::program program)
   (All [anchor expression statement]
diff --git a/stdlib/source/lux/tool/compiler/phase/generation.lux b/stdlib/source/lux/tool/compiler/phase/generation.lux
index 3fe3f867b..203c5d4ab 100644
--- a/stdlib/source/lux/tool/compiler/phase/generation.lux
+++ b/stdlib/source/lux/tool/compiler/phase/generation.lux
@@ -19,14 +19,6 @@
    [//
     [synthesis (#+ Synthesis)]]])
 
-(do-template [<name>]
-  [(exception: #export (<name>)
-     "")]
-
-  [no-active-buffer]
-  [no-anchor]
-  )
-
 (exception: #export (cannot-interpret {error Text})
   (exception.report
    ["Error" error]))
@@ -61,19 +53,19 @@
      evaluate!)
   (: (-> Text statement (Error Any))
      execute!)
-  (: (-> Name expression (Error [Text Any]))
+  (: (-> Name expression (Error [Text Any statement]))
      define!))
 
 (type: #export (Buffer statement) (Row [Name statement]))
 
-(type: #export (Outputs statement) (Dictionary Path (Buffer statement)))
+(type: #export (Output statement) (Dictionary Path (Buffer statement)))
 
 (type: #export (State anchor expression statement)
   {#context Context
    #anchor (Maybe anchor)
    #host (Host expression statement)
    #buffer (Maybe (Buffer statement))
-   #outputs (Outputs statement)
+   #output (Output statement)
    #counter Nat
    #name-cache (Dictionary Name Text)})
 
@@ -97,7 +89,7 @@
    #anchor #.None
    #host host
    #buffer #.None
-   #outputs (dictionary.new text.hash)
+   #output (dictionary.new text.hash)
    #counter 0
    #name-cache (dictionary.new name.hash)})
 
@@ -122,10 +114,14 @@
   (extension.read (|>> (get@ #context)
                        (get@ #scope-name))))
 
+(def: #export empty-buffer Buffer row.empty)
+
 (do-template [<tag>
               <with-declaration> <with-type> <with-value>
-              <get> <get-type> <exception>]
-  [(def: #export <with-declaration>
+              <set> <get> <get-type> <exception>]
+  [(exception: #export <exception>)
+
+   (def: #export <with-declaration>
      (All [anchor expression statement output] <with-type>)
      (function (_ body)
        (function (_ [bundle state])
@@ -146,27 +142,34 @@
          (#error.Success [stateE output])
 
          #.None
-         (exception.throw <exception> []))))]
+         (exception.throw <exception> []))))
+
+   (def: #export (<set> value)
+     (All [anchor expression statement]
+       (-> <get-type> (Operation anchor expression statement Any)))
+     (function (_ [bundle state])
+       (#error.Success [[bundle (set@ <tag> (#.Some value) state)]
+                        []])))]
 
   [#anchor
    (with-anchor anchor)
    (-> anchor (Operation anchor expression statement output)
        (Operation anchor expression statement output))
    anchor
-   anchor anchor no-anchor]
+   set-anchor anchor anchor no-anchor]
 
   [#buffer
    with-buffer
    (-> (Operation anchor expression statement output)
        (Operation anchor expression statement output))
-   row.empty
-   buffer (Buffer statement) no-active-buffer]
+   ..empty-buffer
+   set-buffer buffer (Buffer statement) no-active-buffer]
   )
 
-(def: #export outputs
+(def: #export output
   (All [anchor expression statement]
-    (Operation anchor expression statement (Outputs statement)))
-  (extension.read (get@ #outputs)))
+    (Operation anchor expression statement (Output statement)))
+  (extension.read (get@ #output)))
 
 (def: #export next
   (All [anchor expression statement]
@@ -194,7 +197,7 @@
 
 (def: #export (define! name code)
   (All [anchor expression statement]
-    (-> Name expression (Operation anchor expression statement [Text Any])))
+    (-> Name expression (Operation anchor expression statement [Text Any statement])))
   (function (_ (^@ stateE [bundle state]))
     (case (:: (get@ #host state) define! name code)
       (#error.Success output)
@@ -224,7 +227,7 @@
     (-> Path (Operation anchor expression statement Any)))
   (do //.monad
     [buffer ..buffer]
-    (extension.update (update@ #outputs (dictionary.put target buffer)))))
+    (extension.update (update@ #output (dictionary.put target buffer)))))
 
 (def: #export (remember lux-name)
   (All [anchor expression statement]
diff --git a/stdlib/source/lux/tool/compiler/phase/generation/js/loop.lux b/stdlib/source/lux/tool/compiler/phase/generation/js/loop.lux
index e0ec074d3..d905db9a2 100644
--- a/stdlib/source/lux/tool/compiler/phase/generation/js/loop.lux
+++ b/stdlib/source/lux/tool/compiler/phase/generation/js/loop.lux
@@ -7,7 +7,7 @@
     ["." text
      format]
     [collection
-     ["." list ("#;." functor)]]]
+     ["." list ("#@." functor)]]]
    [host
     ["_" js (#+ Computation Var)]]]
   ["." // #_
@@ -29,7 +29,7 @@
      #let [closure (_.function @scope
                      (|> initsS+
                          list.enumerate
-                         (list;map (|>> product.left (n/+ start) //case.register)))
+                         (list@map (|>> product.left (n/+ start) //case.register)))
                      (_.return bodyO))]]
     (wrap (_.apply/* closure initsO+))))
 
diff --git a/stdlib/source/lux/tool/compiler/phase/generation/js/runtime.lux b/stdlib/source/lux/tool/compiler/phase/generation/js/runtime.lux
index 5e2da39de..cb65b8b85 100644
--- a/stdlib/source/lux/tool/compiler/phase/generation/js/runtime.lux
+++ b/stdlib/source/lux/tool/compiler/phase/generation/js/runtime.lux
@@ -743,7 +743,7 @@
       runtime//array
       ))
 
-(def: #export artifact Text (format prefix ".js"))
+(def: #export artifact Text prefix)
 
 (def: #export generate
   (Operation Any)
diff --git a/stdlib/source/program/compositor.lux b/stdlib/source/program/compositor.lux
index b2ab8208e..8262fe841 100644
--- a/stdlib/source/program/compositor.lux
+++ b/stdlib/source/program/compositor.lux
@@ -4,26 +4,38 @@
    [cli (#+ program:)]
    ["." io (#+ IO io)]
    [control
-    [monad (#+ do)]]
+    [monad (#+ do)]
+    [security
+     ["!" capability]]]
    [data
+    ["." product]
     ["." error (#+ Error)]
     ["." text
-     format]]
+     format]
+    [collection
+     ["." dictionary]
+     ["." row]
+     ["." list ("#@." functor fold)]]]
    [time
     ["." instant (#+ Instant)]]
+   [host
+    ["_" js]]
    [world
+    ["." file]
     ["." console]]
    [tool
     [compiler
      ["." statement]
-     [phase
+     ["." phase
       [macro (#+ Expander)]
       ["." generation]]
      [default
       ["." platform (#+ Platform)]
       ["." syntax]]
      [meta
-      ["." archive (#+ Archive)]]]
+      ["." archive (#+ Archive)]
+      [packager
+       ["." script]]]]
     ## ["." interpreter]
     ]]
   [/
@@ -44,6 +56,37 @@
       (#error.Success output)
       (wrap output))))
 
+(def: (save-artifacts! system state)
+  (All [anchor expression statement]
+    (-> (file.System IO)
+        (statement.State+ anchor expression statement)
+        (IO (Error Any))))
+  (let [?outcome (phase.run' state
+                             (:share [anchor expression statement]
+                                     {(statement.State+ anchor expression statement)
+                                      state}
+                                     {(statement.Operation anchor expression statement
+                                                           (generation.Output statement))
+                                      (statement.lift-generation generation.output)}))]
+    (case ?outcome
+      (#error.Success [state output])
+      (exec (log! "all buffers | output:")
+        (log! (|> output
+                  dictionary.entries
+                  (list@map (function (_ [module buffer])
+                              (|> buffer
+                                  row.to-list
+                                  (list@map (|>> product.left %name (format text.new-line text.tab)))
+                                  (text.join-with "")
+                                  (format module))))
+                  (text.join-with text.new-line)))
+        (do (error.with io.monad)
+          [file (!.use (:: system create-file) "program.js")]
+          (!.use (:: file over-write) (script.package output))))
+
+      (#error.Failure error)
+      (:: io.monad wrap (#error.Failure error)))))
+
 (def: #export (compiler expander platform bundle program service)
   (All [anchor expression statement]
     (-> Expander
@@ -64,11 +107,12 @@
                             platform}
                            {(IO (Error (statement.State+ anchor expression statement)))
                             (platform.initialize expander platform bundle program)})
-             _ (:share [anchor expression statement]
-                       {(Platform IO anchor expression statement)
-                        platform}
-                       {(IO (Error [Archive (statement.State+ anchor expression statement)]))
-                        (platform.compile expander platform configuration archive.empty state)})
+             [archive state] (:share [anchor expression statement]
+                                     {(Platform IO anchor expression statement)
+                                      platform}
+                                     {(IO (Error [Archive (statement.State+ anchor expression statement)]))
+                                      (platform.compile expander platform configuration archive.empty state)})
+             _ (save-artifacts! (get@ #platform.&file-system platform) state)
              ## _ (cache/io.clean target ...)
              ]
             (wrap (log! "Compilation complete!"))))
-- 
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