From 984f562579ba90095d0014eb2b3463856ab78b98 Mon Sep 17 00:00:00 2001
From: Peter Harpending <peter@harpending.org>
Date: Wed, 12 Jul 2023 17:17:03 -0600
Subject: [PATCH] wrote out architecture rant in readme

---
 jrx/README.md                                 |  174 ++-
 jrx/{icons => art}/jrx-icon-32.png            |  Bin
 jrx/{icons => art}/jrx-icon-48.png            |  Bin
 jrx/{icons => art}/jrx-icon-48.xcf            |  Bin
 jrx/{icons => art}/jrx-icon-96.png            |  Bin
 jrx/{icons => art}/jrx-icon-96.xcf            |  Bin
 jrx/{icons => art}/jrx-icon-indexed.xcf       |  Bin
 jrx/{icons => art}/jrx-icon-unindexed.xcf     |  Bin
 jrx/{ext/icons => art}/keypair.svg            |    0
 jrx/art/popup.png                             |  Bin 0 -> 16421 bytes
 .../symmetric-icon-96-draft.xcf               |  Bin
 jrx/jex.eterms                                |    3 +-
 jrx/nacl.js                                   | 1178 -----------------
 jrx/scratch/old_content.ts                    |  261 ++++
 jrx/src/content.ts                            |  243 +---
 jrx/src/jr_ipc.ts                             |   12 +
 16 files changed, 460 insertions(+), 1411 deletions(-)
 rename jrx/{icons => art}/jrx-icon-32.png (100%)
 rename jrx/{icons => art}/jrx-icon-48.png (100%)
 rename jrx/{icons => art}/jrx-icon-48.xcf (100%)
 rename jrx/{icons => art}/jrx-icon-96.png (100%)
 rename jrx/{icons => art}/jrx-icon-96.xcf (100%)
 rename jrx/{icons => art}/jrx-icon-indexed.xcf (100%)
 rename jrx/{icons => art}/jrx-icon-unindexed.xcf (100%)
 rename jrx/{ext/icons => art}/keypair.svg (100%)
 create mode 100644 jrx/art/popup.png
 rename jrx/{icons => art}/symmetric-icon-96-draft.xcf (100%)
 delete mode 100644 jrx/nacl.js
 create mode 100644 jrx/scratch/old_content.ts
 create mode 100644 jrx/src/jr_ipc.ts

diff --git a/jrx/README.md b/jrx/README.md
index 86e696c..0628ad3 100644
--- a/jrx/README.md
+++ b/jrx/README.md
@@ -1,5 +1,177 @@
 # Jack Russell Extension
 
-## File Tree
+This is a browser extension wallet for the Aeternity payment network.  It is
+meant to work in the latest versions of Firefox and Chromium.
+
+## How it works
+
+You may want to read about how [AWCP](../libs/awcp/src/awcp.ts) and
+[Sidekick](../sidekick/src/sidekick.ts) work first.  Briefly,
+
+- AWCP (Aepp-Waellet Communication Protocol) defines the message protocol
+  between a page script (the "aepp") and a wallet (the "waellet"). A page
+  script is something that you include with `<script src="./foo/bar.js">`
+- Sidekick is a library (for page scripts) of TS/JS function calls that
+  blackboxes away all of the stupid implementation detail nonsense about how to
+  actually send and recieve the messages defined by AWCP.  For instance, there
+  is a function call `tx_sign_noprop`, where you hand that function a
+  transaction, and the return value is either the signed transaction or an
+  error (for instance, the user rejected the signature request).
+
+JR works in a very similar way to Sidekick, but it has more things that need to
+talk to other things layers.  Browser extensions have 3 basic components:
+
+1.  Content scripts.  These are almost the same thing as page scripts.
+
+    In general, content scripts are typically used to modify websites the
+    end-user is looking at.  For instance, if you were making RedBorder, an
+    extension that adds a 15 pixel wide red border around every image, the
+    content script is the part of RedBorder that has the permission to query
+    the DOM for `<img>` tags, and modify each such tag to have the property
+    `style="border: 15px solid red;"`.
+
+    For the purposes of JR, the content script is simply the messaging layer
+    between the page script and the rest of the extension.  All that matters in
+    our case is
+    - the content script can post messages that are visible to page scripts
+    - vice versa
+    - the content script has permission to send messages to other parts of our
+      extension (and to other extensions and to desktop applictions and it can
+      eat your children but that doesn't matter)
+    - vice versa
+
+2.  The background script.
+
+    This is the central controller of the application.
+
+3.  Popup scripts.
+
+    This is what a "popup" is in the context of browser extensions:
+
+    ![what the word "popup" means in the browser extensions](./art/popup.png)
+
+    This is an HTML page like any other.  A popup script is simply a script
+    that runs in the context of the popup page.  It has the same basic array of
+    permissions as the background script.
 
 
+```
+PAGE SCRIPT  <->  CONTENT SCRIPT  <->  BACKGROUND SCRIPT  <->  POPUP SCRIPT
+ Aegora.jp   <->  src/content.ts  <->  src/background.ts  <->  src/popup.ts
+```
+
+In JavaScript, the standard way of communicating between mutually opaque
+contexts A and B (for instance, between a page script and a wallet) is to write
+a class in each context that manages state, which listens for events, and then
+does things in response to those events. `ClassA` can dispatch events which are
+visible to the event listener in `ClassB` and vice versa.  This is the natural
+result of trying to shoehorn concurrency into an object-oriented language.
+
+Sidekick and JR internally work by mimicking Erlang's interprocess
+communication (IPC) idiom.
+
+Erlang is a concurrency-first language, and thus has a much saner and more
+well-thought-out approach to this problem.  There is a build-in function called
+`send(PID, Message)`. The message can be any Erlang term.  In the receiving
+process, there is primitive syntax for receiving messages:
+
+```erl
+receive
+    Pattern1 ->
+        do_thing_1();
+    Pattern2 ->
+        do_thing_2();
+    _ ->
+        handle_arbitrary_message()
+after NMilliseconds ->
+    do_timeout_thing()
+end.
+```
+
+Each process has a mailbox.  When a process enters a `receive`, it sits there
+and scans its mailbox to find a message that matches one of the patterns.  If
+it finds a message that matches `Pattern1`, it executes the function
+`do_thing_1()`, and so on.  The `after` part is optional, and it exists as a
+backstop so the process doesn't get stuck in an infinite `receive` loop.
+
+Here is an example of two processes just exchanging ping and pong:
+
+```erl
+#!/usr/bin/env escript
+
+-mode(compile).
+
+%% this is the code that is run by the pinger process
+pinger() ->
+    %% the pinger just sits and waits until a pong message appears in the
+    %% mailbox and sends back ping
+    receive
+        %% wait to receive a pong
+        %% only accept this pattern
+        {SenderPID, pong} ->
+            %% self() gets the current process pid
+            %% print out the pong to the console
+            ok = io:format("~p received pong from ~p~n", [self(), SenderPID]),
+            %% wait for 1 second
+            ok = timer:sleep(1000),
+            %% send a ping back
+            SenderPID ! {self(), ping},
+            %% start over
+            pinger()
+    end.
+
+
+%% this is the code that is run by the ponger process
+%% identical to the pinger except the words "ping" and "pong" have been swapped
+ponger() ->
+    %% the ponger just sits and waits until a ping message appears in the
+    %% mailbox and sends back pong
+    receive
+        %% wait to receive a ping
+        %% only accept this pattern
+        {SenderPID, ping} ->
+            %% self gets the current process's pid
+            %% print out the ping to the console
+            ok = io:format("~p received ping from ~p~n", [self(), SenderPID]),
+            %% wait for 1 second
+            ok = timer:sleep(1000),
+            %% send a pong back
+            SenderPID ! {self(), pong},
+            %% start over
+            ponger()
+    end.
+
+
+%% this is the main process
+main([]) ->
+    %% start up pingers and pongers
+    %% these just sit and wait until they are told to do something
+    PingerPID = spawn(fun pinger/0),
+    PongerPID = spawn(fun ponger/0),
+    %% ping the ponger, but lie about who is doing it
+    PongerPID ! {PingerPID, ping},
+    %% this is a hack so that main doesn't exit and therefore the demo works
+    receive
+        _ ->
+            ok = io:format("bye~n")
+    end.
+```
+
+```
+[~] % escript pingpong.erl
+<0.81.0> received ping from <0.80.0>
+<0.80.0> received pong from <0.81.0>
+<0.81.0> received ping from <0.80.0>
+<0.80.0> received pong from <0.81.0>
+<0.81.0> received ping from <0.80.0>
+<0.80.0> received pong from <0.81.0>
+<0.81.0> received ping from <0.80.0>
+<0.80.0> received pong from <0.81.0>
+^C
+```
+
+JR basically thinks of each of the 3 different components of an extension as
+Erlang processes, and has some band-aid code to kind of sort of mimick Erlang's
+IPC idiom.  Frankly, Erlang's IPC idiom doesn't quite fit into TS/JS, however
+even the shoehorned band-aid Erlang idiom is significantly simpler and more
+pleasant to work with than the OOPy event idiom.
diff --git a/jrx/icons/jrx-icon-32.png b/jrx/art/jrx-icon-32.png
similarity index 100%
rename from jrx/icons/jrx-icon-32.png
rename to jrx/art/jrx-icon-32.png
diff --git a/jrx/icons/jrx-icon-48.png b/jrx/art/jrx-icon-48.png
similarity index 100%
rename from jrx/icons/jrx-icon-48.png
rename to jrx/art/jrx-icon-48.png
diff --git a/jrx/icons/jrx-icon-48.xcf b/jrx/art/jrx-icon-48.xcf
similarity index 100%
rename from jrx/icons/jrx-icon-48.xcf
rename to jrx/art/jrx-icon-48.xcf
diff --git a/jrx/icons/jrx-icon-96.png b/jrx/art/jrx-icon-96.png
similarity index 100%
rename from jrx/icons/jrx-icon-96.png
rename to jrx/art/jrx-icon-96.png
diff --git a/jrx/icons/jrx-icon-96.xcf b/jrx/art/jrx-icon-96.xcf
similarity index 100%
rename from jrx/icons/jrx-icon-96.xcf
rename to jrx/art/jrx-icon-96.xcf
diff --git a/jrx/icons/jrx-icon-indexed.xcf b/jrx/art/jrx-icon-indexed.xcf
similarity index 100%
rename from jrx/icons/jrx-icon-indexed.xcf
rename to jrx/art/jrx-icon-indexed.xcf
diff --git a/jrx/icons/jrx-icon-unindexed.xcf b/jrx/art/jrx-icon-unindexed.xcf
similarity index 100%
rename from jrx/icons/jrx-icon-unindexed.xcf
rename to jrx/art/jrx-icon-unindexed.xcf
diff --git a/jrx/ext/icons/keypair.svg b/jrx/art/keypair.svg
similarity index 100%
rename from jrx/ext/icons/keypair.svg
rename to jrx/art/keypair.svg
diff --git a/jrx/art/popup.png b/jrx/art/popup.png
new file mode 100644
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literal 0
HcmV?d00001

diff --git a/jrx/icons/symmetric-icon-96-draft.xcf b/jrx/art/symmetric-icon-96-draft.xcf
similarity index 100%
rename from jrx/icons/symmetric-icon-96-draft.xcf
rename to jrx/art/symmetric-icon-96-draft.xcf
diff --git a/jrx/jex.eterms b/jrx/jex.eterms
index d69a115..cb2f968 100644
--- a/jrx/jex.eterms
+++ b/jrx/jex.eterms
@@ -2,4 +2,5 @@
 {realm, local}.
 {name, jrx}.
 {version, "0.1.0"}.
-{deps, ["local-tweetnacl-1.0.3"]}.
+{deps, ["local-tweetnacl-1.0.3",
+        "local-awcp-0.2.1"]}.
diff --git a/jrx/nacl.js b/jrx/nacl.js
deleted file mode 100644
index fd8e678..0000000
--- a/jrx/nacl.js
+++ /dev/null
@@ -1,1178 +0,0 @@
-(function(nacl) {
-'use strict';
-
-// Ported in 2014 by Dmitry Chestnykh and Devi Mandiri.
-// Public domain.
-//
-// Implementation derived from TweetNaCl version 20140427.
-// See for details: http://tweetnacl.cr.yp.to/
-
-var u64 = function(h, l) { this.hi = h|0 >>> 0; this.lo = l|0 >>> 0; };
-var gf = function(init) {
-  var i, r = new Float64Array(16);
-  if (init) for (i = 0; i < init.length; i++) r[i] = init[i];
-  return r;
-};
-
-//  Pluggable, initialized in high-level API below.
-var randombytes = function(/* x, n */) { throw new Error('no PRNG'); };
-
-var _0 = new Uint8Array(16);
-var _9 = new Uint8Array(32); _9[0] = 9;
-
-var gf0 = gf(),
-    gf1 = gf([1]),
-    _121665 = gf([0xdb41, 1]),
-    D = gf([0x78a3, 0x1359, 0x4dca, 0x75eb, 0xd8ab, 0x4141, 0x0a4d, 0x0070, 0xe898, 0x7779, 0x4079, 0x8cc7, 0xfe73, 0x2b6f, 0x6cee, 0x5203]),
-    D2 = gf([0xf159, 0x26b2, 0x9b94, 0xebd6, 0xb156, 0x8283, 0x149a, 0x00e0, 0xd130, 0xeef3, 0x80f2, 0x198e, 0xfce7, 0x56df, 0xd9dc, 0x2406]),
-    X = gf([0xd51a, 0x8f25, 0x2d60, 0xc956, 0xa7b2, 0x9525, 0xc760, 0x692c, 0xdc5c, 0xfdd6, 0xe231, 0xc0a4, 0x53fe, 0xcd6e, 0x36d3, 0x2169]),
-    Y = gf([0x6658, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666]),
-    I = gf([0xa0b0, 0x4a0e, 0x1b27, 0xc4ee, 0xe478, 0xad2f, 0x1806, 0x2f43, 0xd7a7, 0x3dfb, 0x0099, 0x2b4d, 0xdf0b, 0x4fc1, 0x2480, 0x2b83]);
-
-function L32(x, c) { return (x << c) | (x >>> (32 - c)); }
-
-function ld32(x, i) {
-  var u = x[i+3] & 0xff;
-  u = (u<<8)|(x[i+2] & 0xff);
-  u = (u<<8)|(x[i+1] & 0xff);
-  return (u<<8)|(x[i+0] & 0xff);
-}
-
-function dl64(x, i) {
-  var h = (x[i] << 24) | (x[i+1] << 16) | (x[i+2] << 8) | x[i+3];
-  var l = (x[i+4] << 24) | (x[i+5] << 16) | (x[i+6] << 8) | x[i+7];
-  return new u64(h, l);
-}
-
-function st32(x, j, u) {
-  var i;
-  for (i = 0; i < 4; i++) { x[j+i] = u & 255; u >>>= 8; }
-}
-
-function ts64(x, i, u) {
-  x[i]   = (u.hi >> 24) & 0xff;
-  x[i+1] = (u.hi >> 16) & 0xff;
-  x[i+2] = (u.hi >>  8) & 0xff;
-  x[i+3] = u.hi & 0xff;
-  x[i+4] = (u.lo >> 24)  & 0xff;
-  x[i+5] = (u.lo >> 16)  & 0xff;
-  x[i+6] = (u.lo >>  8)  & 0xff;
-  x[i+7] = u.lo & 0xff;
-}
-
-function vn(x, xi, y, yi, n) {
-  var i,d = 0;
-  for (i = 0; i < n; i++) d |= x[xi+i]^y[yi+i];
-  return (1 & ((d - 1) >>> 8)) - 1;
-}
-
-function crypto_verify_16(x, xi, y, yi) {
-  return vn(x,xi,y,yi,16);
-}
-
-function crypto_verify_32(x, xi, y, yi) {
-  return vn(x,xi,y,yi,32);
-}
-
-function core(out,inp,k,c,h) {
-  var w = new Uint32Array(16), x = new Uint32Array(16),
-      y = new Uint32Array(16), t = new Uint32Array(4);
-  var i, j, m;
-
-  for (i = 0; i < 4; i++) {
-    x[5*i] = ld32(c, 4*i);
-    x[1+i] = ld32(k, 4*i);
-    x[6+i] = ld32(inp, 4*i);
-    x[11+i] = ld32(k, 16+4*i);
-  }
-
-  for (i = 0; i < 16; i++) y[i] = x[i];
-
-  for (i = 0; i < 20; i++) {
-    for (j = 0; j < 4; j++) {
-      for (m = 0; m < 4; m++) t[m] = x[(5*j+4*m)%16];
-      t[1] ^= L32((t[0]+t[3])|0, 7);
-      t[2] ^= L32((t[1]+t[0])|0, 9);
-      t[3] ^= L32((t[2]+t[1])|0,13);
-      t[0] ^= L32((t[3]+t[2])|0,18);
-      for (m = 0; m < 4; m++) w[4*j+(j+m)%4] = t[m];
-    }
-    for (m = 0; m < 16; m++) x[m] = w[m];
-  }
-
-  if (h) {
-    for (i = 0; i < 16; i++) x[i] = (x[i] + y[i]) | 0;
-    for (i = 0; i < 4; i++) {
-      x[5*i] = (x[5*i] - ld32(c, 4*i)) | 0;
-      x[6+i] = (x[6+i] - ld32(inp, 4*i)) | 0;
-    }
-    for (i = 0; i < 4; i++) {
-      st32(out,4*i,x[5*i]);
-      st32(out,16+4*i,x[6+i]);
-    }
-  } else {
-    for (i = 0; i < 16; i++) st32(out, 4 * i, (x[i] + y[i]) | 0);
-  }
-}
-
-function crypto_core_salsa20(out,inp,k,c) {
-  core(out,inp,k,c,false);
-  return 0;
-}
-
-function crypto_core_hsalsa20(out,inp,k,c) {
-  core(out,inp,k,c,true);
-  return 0;
-}
-
-var sigma = new Uint8Array([101, 120, 112, 97, 110, 100, 32, 51, 50, 45, 98, 121, 116, 101, 32, 107]);
-            // "expand 32-byte k"
-
-function crypto_stream_salsa20_xor(c,cpos,m,mpos,b,n,k) {
-  var z = new Uint8Array(16), x = new Uint8Array(64);
-  var u, i;
-  if (!b) return 0;
-  for (i = 0; i < 16; i++) z[i] = 0;
-  for (i = 0; i < 8; i++) z[i] = n[i];
-  while (b >= 64) {
-    crypto_core_salsa20(x,z,k,sigma);
-    for (i = 0; i < 64; i++) c[cpos+i] = (m?m[mpos+i]:0) ^ x[i];
-    u = 1;
-    for (i = 8; i < 16; i++) {
-      u = u + (z[i] & 0xff) | 0;
-      z[i] = u & 0xff;
-      u >>>= 8;
-    }
-    b -= 64;
-    cpos += 64;
-    if (m) mpos += 64;
-  }
-  if (b > 0) {
-    crypto_core_salsa20(x,z,k,sigma);
-    for (i = 0; i < b; i++) c[cpos+i] = (m?m[mpos+i]:0) ^ x[i];
-  }
-  return 0;
-}
-
-function crypto_stream_salsa20(c,cpos,d,n,k) {
-  return crypto_stream_salsa20_xor(c,cpos,null,0,d,n,k);
-}
-
-function crypto_stream(c,cpos,d,n,k) {
-  var s = new Uint8Array(32);
-  crypto_core_hsalsa20(s,n,k,sigma);
-  return crypto_stream_salsa20(c,cpos,d,n.subarray(16),s);
-}
-
-function crypto_stream_xor(c,cpos,m,mpos,d,n,k) {
-  var s = new Uint8Array(32);
-  crypto_core_hsalsa20(s,n,k,sigma);
-  return crypto_stream_salsa20_xor(c,cpos,m,mpos,d,n.subarray(16),s);
-}
-
-function add1305(h, c) {
-  var j, u = 0;
-  for (j = 0; j < 17; j++) {
-    u = (u + ((h[j] + c[j]) | 0)) | 0;
-    h[j] = u & 255;
-    u >>>= 8;
-  }
-}
-
-var minusp = new Uint32Array([
-  5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 252
-]);
-
-function crypto_onetimeauth(out, outpos, m, mpos, n, k) {
-  var s, i, j, u;
-  var x = new Uint32Array(17), r = new Uint32Array(17),
-      h = new Uint32Array(17), c = new Uint32Array(17),
-      g = new Uint32Array(17);
-  for (j = 0; j < 17; j++) r[j]=h[j]=0;
-  for (j = 0; j < 16; j++) r[j]=k[j];
-  r[3]&=15;
-  r[4]&=252;
-  r[7]&=15;
-  r[8]&=252;
-  r[11]&=15;
-  r[12]&=252;
-  r[15]&=15;
-
-  while (n > 0) {
-    for (j = 0; j < 17; j++) c[j] = 0;
-    for (j = 0; (j < 16) && (j < n); ++j) c[j] = m[mpos+j];
-    c[j] = 1;
-    mpos += j; n -= j;
-    add1305(h,c);
-    for (i = 0; i < 17; i++) {
-      x[i] = 0;
-      for (j = 0; j < 17; j++) x[i] = (x[i] + (h[j] * ((j <= i) ? r[i - j] : ((320 * r[i + 17 - j])|0))) | 0) | 0;
-    }
-    for (i = 0; i < 17; i++) h[i] = x[i];
-    u = 0;
-    for (j = 0; j < 16; j++) {
-      u = (u + h[j]) | 0;
-      h[j] = u & 255;
-      u >>>= 8;
-    }
-    u = (u + h[16]) | 0; h[16] = u & 3;
-    u = (5 * (u >>> 2)) | 0;
-    for (j = 0; j < 16; j++) {
-      u = (u + h[j]) | 0;
-      h[j] = u & 255;
-      u >>>= 8;
-    }
-    u = (u + h[16]) | 0; h[16] = u;
-  }
-
-  for (j = 0; j < 17; j++) g[j] = h[j];
-  add1305(h,minusp);
-  s = (-(h[16] >>> 7) | 0);
-  for (j = 0; j < 17; j++) h[j] ^= s & (g[j] ^ h[j]);
-
-  for (j = 0; j < 16; j++) c[j] = k[j + 16];
-  c[16] = 0;
-  add1305(h,c);
-  for (j = 0; j < 16; j++) out[outpos+j] = h[j];
-  return 0;
-}
-
-function crypto_onetimeauth_verify(h, hpos, m, mpos, n, k) {
-  var x = new Uint8Array(16);
-  crypto_onetimeauth(x,0,m,mpos,n,k);
-  return crypto_verify_16(h,hpos,x,0);
-}
-
-function crypto_secretbox(c,m,d,n,k) {
-  var i;
-  if (d < 32) return -1;
-  crypto_stream_xor(c,0,m,0,d,n,k);
-  crypto_onetimeauth(c, 16, c, 32, d - 32, c);
-  for (i = 0; i < 16; i++) c[i] = 0;
-  return 0;
-}
-
-function crypto_secretbox_open(m,c,d,n,k) {
-  var i;
-  var x = new Uint8Array(32);
-  if (d < 32) return -1;
-  crypto_stream(x,0,32,n,k);
-  if (crypto_onetimeauth_verify(c, 16,c, 32,d - 32,x) !== 0) return -1;
-  crypto_stream_xor(m,0,c,0,d,n,k);
-  for (i = 0; i < 32; i++) m[i] = 0;
-  return 0;
-}
-
-function set25519(r, a) {
-  var i;
-  for (i = 0; i < 16; i++) r[i] = a[i]|0;
-}
-
-function car25519(o) {
-  var c;
-  var i;
-  for (i = 0; i < 16; i++) {
-      o[i] += 65536;
-      c = Math.floor(o[i] / 65536);
-      o[(i+1)*(i<15?1:0)] += c - 1 + 37 * (c-1) * (i===15?1:0);
-      o[i] -= (c * 65536);
-  }
-}
-
-function sel25519(p, q, b) {
-  var t, c = ~(b-1);
-  for (var i = 0; i < 16; i++) {
-    t = c & (p[i] ^ q[i]);
-    p[i] ^= t;
-    q[i] ^= t;
-  }
-}
-
-function pack25519(o, n) {
-  var i, j, b;
-  var m = gf(), t = gf();
-  for (i = 0; i < 16; i++) t[i] = n[i];
-  car25519(t);
-  car25519(t);
-  car25519(t);
-  for (j = 0; j < 2; j++) {
-    m[0] = t[0] - 0xffed;
-    for (i = 1; i < 15; i++) {
-      m[i] = t[i] - 0xffff - ((m[i-1]>>16) & 1);
-      m[i-1] &= 0xffff;
-    }
-    m[15] = t[15] - 0x7fff - ((m[14]>>16) & 1);
-    b = (m[15]>>16) & 1;
-    m[14] &= 0xffff;
-    sel25519(t, m, 1-b);
-  }
-  for (i = 0; i < 16; i++) {
-    o[2*i] = t[i] & 0xff;
-    o[2*i+1] = t[i]>>8;
-  }
-}
-
-function neq25519(a, b) {
-  var c = new Uint8Array(32), d = new Uint8Array(32);
-  pack25519(c, a);
-  pack25519(d, b);
-  return crypto_verify_32(c, 0, d, 0);
-}
-
-function par25519(a) {
-  var d = new Uint8Array(32);
-  pack25519(d, a);
-  return d[0] & 1;
-}
-
-function unpack25519(o, n) {
-  var i;
-  for (i = 0; i < 16; i++) o[i] = n[2*i] + (n[2*i+1] << 8);
-  o[15] &= 0x7fff;
-}
-
-function A(o, a, b) {
-  var i;
-  for (i = 0; i < 16; i++) o[i] = (a[i] + b[i])|0;
-}
-
-function Z(o, a, b) {
-  var i;
-  for (i = 0; i < 16; i++) o[i] = (a[i] - b[i])|0;
-}
-
-function M(o, a, b) {
-  var i, j, t = new Float64Array(31);
-  for (i = 0; i < 31; i++) t[i] = 0;
-  for (i = 0; i < 16; i++) {
-    for (j = 0; j < 16; j++) {
-      t[i+j] += a[i] * b[j];
-    }
-  }
-  for (i = 0; i < 15; i++) {
-    t[i] += 38 * t[i+16];
-  }
-  for (i = 0; i < 16; i++) o[i] = t[i];
-  car25519(o);
-  car25519(o);
-}
-
-function S(o, a) {
-  M(o, a, a);
-}
-
-function inv25519(o, i) {
-  var c = gf();
-  var a;
-  for (a = 0; a < 16; a++) c[a] = i[a];
-  for (a = 253; a >= 0; a--) {
-    S(c, c);
-    if(a !== 2 && a !== 4) M(c, c, i);
-  }
-  for (a = 0; a < 16; a++) o[a] = c[a];
-}
-
-function pow2523(o, i) {
-  var c = gf();
-  var a;
-  for (a = 0; a < 16; a++) c[a] = i[a];
-  for (a = 250; a >= 0; a--) {
-      S(c, c);
-      if(a !== 1) M(c, c, i);
-  }
-  for (a = 0; a < 16; a++) o[a] = c[a];
-}
-
-function crypto_scalarmult(q, n, p) {
-  var z = new Uint8Array(32);
-  var x = new Float64Array(80), r, i;
-  var a = gf(), b = gf(), c = gf(),
-      d = gf(), e = gf(), f = gf();
-  for (i = 0; i < 31; i++) z[i] = n[i];
-  z[31]=(n[31]&127)|64;
-  z[0]&=248;
-  unpack25519(x,p);
-  for (i = 0; i < 16; i++) {
-    b[i]=x[i];
-    d[i]=a[i]=c[i]=0;
-  }
-  a[0]=d[0]=1;
-  for (i=254; i>=0; --i) {
-    r=(z[i>>>3]>>>(i&7))&1;
-    sel25519(a,b,r);
-    sel25519(c,d,r);
-    A(e,a,c);
-    Z(a,a,c);
-    A(c,b,d);
-    Z(b,b,d);
-    S(d,e);
-    S(f,a);
-    M(a,c,a);
-    M(c,b,e);
-    A(e,a,c);
-    Z(a,a,c);
-    S(b,a);
-    Z(c,d,f);
-    M(a,c,_121665);
-    A(a,a,d);
-    M(c,c,a);
-    M(a,d,f);
-    M(d,b,x);
-    S(b,e);
-    sel25519(a,b,r);
-    sel25519(c,d,r);
-  }
-  for (i = 0; i < 16; i++) {
-    x[i+16]=a[i];
-    x[i+32]=c[i];
-    x[i+48]=b[i];
-    x[i+64]=d[i];
-  }
-  var x32 = x.subarray(32);
-  var x16 = x.subarray(16);
-  inv25519(x32,x32);
-  M(x16,x16,x32);
-  pack25519(q,x16);
-  return 0;
-}
-
-function crypto_scalarmult_base(q, n) {
-  return crypto_scalarmult(q, n, _9);
-}
-
-function crypto_box_keypair(y, x) {
-  randombytes(x, 32);
-  return crypto_scalarmult_base(y, x);
-}
-
-function crypto_box_beforenm(k, y, x) {
-  var s = new Uint8Array(32);
-  crypto_scalarmult(s, x, y);
-  return crypto_core_hsalsa20(k, _0, s, sigma);
-}
-
-var crypto_box_afternm = crypto_secretbox;
-var crypto_box_open_afternm = crypto_secretbox_open;
-
-function crypto_box(c, m, d, n, y, x) {
-  var k = new Uint8Array(32);
-  crypto_box_beforenm(k, y, x);
-  return crypto_box_afternm(c, m, d, n, k);
-}
-
-function crypto_box_open(m, c, d, n, y, x) {
-  var k = new Uint8Array(32);
-  crypto_box_beforenm(k, y, x);
-  return crypto_box_open_afternm(m, c, d, n, k);
-}
-
-function add64() {
-  var a = 0, b = 0, c = 0, d = 0, m16 = 65535, l, h, i;
-  for (i = 0; i < arguments.length; i++) {
-    l = arguments[i].lo;
-    h = arguments[i].hi;
-    a += (l & m16); b += (l >>> 16);
-    c += (h & m16); d += (h >>> 16);
-  }
-
-  b += (a >>> 16);
-  c += (b >>> 16);
-  d += (c >>> 16);
-
-  return new u64((c & m16) | (d << 16), (a & m16) | (b << 16));
-}
-
-function shr64(x, c) {
-  return new u64((x.hi >>> c), (x.lo >>> c) | (x.hi << (32 - c)));
-}
-
-function xor64() {
-  var l = 0, h = 0, i;
-  for (i = 0; i < arguments.length; i++) {
-    l ^= arguments[i].lo;
-    h ^= arguments[i].hi;
-  }
-  return new u64(h, l);
-}
-
-function R(x, c) {
-  var h, l, c1 = 32 - c;
-  if (c < 32) {
-    h = (x.hi >>> c) | (x.lo << c1);
-    l = (x.lo >>> c) | (x.hi << c1);
-  } else if (c < 64) {
-    h = (x.lo >>> c) | (x.hi << c1);
-    l = (x.hi >>> c) | (x.lo << c1);
-  }
-  return new u64(h, l);
-}
-
-function Ch(x, y, z) {
-  var h = (x.hi & y.hi) ^ (~x.hi & z.hi),
-      l = (x.lo & y.lo) ^ (~x.lo & z.lo);
-  return new u64(h, l);
-}
-
-function Maj(x, y, z) {
-  var h = (x.hi & y.hi) ^ (x.hi & z.hi) ^ (y.hi & z.hi),
-      l = (x.lo & y.lo) ^ (x.lo & z.lo) ^ (y.lo & z.lo);
-  return new u64(h, l);
-}
-
-function Sigma0(x) { return xor64(R(x,28), R(x,34), R(x,39)); }
-function Sigma1(x) { return xor64(R(x,14), R(x,18), R(x,41)); }
-function sigma0(x) { return xor64(R(x, 1), R(x, 8), shr64(x,7)); }
-function sigma1(x) { return xor64(R(x,19), R(x,61), shr64(x,6)); }
-
-var K = [
-  new u64(0x428a2f98, 0xd728ae22), new u64(0x71374491, 0x23ef65cd),
-  new u64(0xb5c0fbcf, 0xec4d3b2f), new u64(0xe9b5dba5, 0x8189dbbc),
-  new u64(0x3956c25b, 0xf348b538), new u64(0x59f111f1, 0xb605d019),
-  new u64(0x923f82a4, 0xaf194f9b), new u64(0xab1c5ed5, 0xda6d8118),
-  new u64(0xd807aa98, 0xa3030242), new u64(0x12835b01, 0x45706fbe),
-  new u64(0x243185be, 0x4ee4b28c), new u64(0x550c7dc3, 0xd5ffb4e2),
-  new u64(0x72be5d74, 0xf27b896f), new u64(0x80deb1fe, 0x3b1696b1),
-  new u64(0x9bdc06a7, 0x25c71235), new u64(0xc19bf174, 0xcf692694),
-  new u64(0xe49b69c1, 0x9ef14ad2), new u64(0xefbe4786, 0x384f25e3),
-  new u64(0x0fc19dc6, 0x8b8cd5b5), new u64(0x240ca1cc, 0x77ac9c65),
-  new u64(0x2de92c6f, 0x592b0275), new u64(0x4a7484aa, 0x6ea6e483),
-  new u64(0x5cb0a9dc, 0xbd41fbd4), new u64(0x76f988da, 0x831153b5),
-  new u64(0x983e5152, 0xee66dfab), new u64(0xa831c66d, 0x2db43210),
-  new u64(0xb00327c8, 0x98fb213f), new u64(0xbf597fc7, 0xbeef0ee4),
-  new u64(0xc6e00bf3, 0x3da88fc2), new u64(0xd5a79147, 0x930aa725),
-  new u64(0x06ca6351, 0xe003826f), new u64(0x14292967, 0x0a0e6e70),
-  new u64(0x27b70a85, 0x46d22ffc), new u64(0x2e1b2138, 0x5c26c926),
-  new u64(0x4d2c6dfc, 0x5ac42aed), new u64(0x53380d13, 0x9d95b3df),
-  new u64(0x650a7354, 0x8baf63de), new u64(0x766a0abb, 0x3c77b2a8),
-  new u64(0x81c2c92e, 0x47edaee6), new u64(0x92722c85, 0x1482353b),
-  new u64(0xa2bfe8a1, 0x4cf10364), new u64(0xa81a664b, 0xbc423001),
-  new u64(0xc24b8b70, 0xd0f89791), new u64(0xc76c51a3, 0x0654be30),
-  new u64(0xd192e819, 0xd6ef5218), new u64(0xd6990624, 0x5565a910),
-  new u64(0xf40e3585, 0x5771202a), new u64(0x106aa070, 0x32bbd1b8),
-  new u64(0x19a4c116, 0xb8d2d0c8), new u64(0x1e376c08, 0x5141ab53),
-  new u64(0x2748774c, 0xdf8eeb99), new u64(0x34b0bcb5, 0xe19b48a8),
-  new u64(0x391c0cb3, 0xc5c95a63), new u64(0x4ed8aa4a, 0xe3418acb),
-  new u64(0x5b9cca4f, 0x7763e373), new u64(0x682e6ff3, 0xd6b2b8a3),
-  new u64(0x748f82ee, 0x5defb2fc), new u64(0x78a5636f, 0x43172f60),
-  new u64(0x84c87814, 0xa1f0ab72), new u64(0x8cc70208, 0x1a6439ec),
-  new u64(0x90befffa, 0x23631e28), new u64(0xa4506ceb, 0xde82bde9),
-  new u64(0xbef9a3f7, 0xb2c67915), new u64(0xc67178f2, 0xe372532b),
-  new u64(0xca273ece, 0xea26619c), new u64(0xd186b8c7, 0x21c0c207),
-  new u64(0xeada7dd6, 0xcde0eb1e), new u64(0xf57d4f7f, 0xee6ed178),
-  new u64(0x06f067aa, 0x72176fba), new u64(0x0a637dc5, 0xa2c898a6),
-  new u64(0x113f9804, 0xbef90dae), new u64(0x1b710b35, 0x131c471b),
-  new u64(0x28db77f5, 0x23047d84), new u64(0x32caab7b, 0x40c72493),
-  new u64(0x3c9ebe0a, 0x15c9bebc), new u64(0x431d67c4, 0x9c100d4c),
-  new u64(0x4cc5d4be, 0xcb3e42b6), new u64(0x597f299c, 0xfc657e2a),
-  new u64(0x5fcb6fab, 0x3ad6faec), new u64(0x6c44198c, 0x4a475817)
-];
-
-function crypto_hashblocks(x, m, n) {
-  var z = [], b = [], a = [], w = [], t, i, j;
-
-  for (i = 0; i < 8; i++) z[i] = a[i] = dl64(x, 8*i);
-
-  var pos = 0;
-  while (n >= 128) {
-    for (i = 0; i < 16; i++) w[i] = dl64(m, 8*i+pos);
-    for (i = 0; i < 80; i++) {
-      for (j = 0; j < 8; j++) b[j] = a[j];
-      t = add64(a[7], Sigma1(a[4]), Ch(a[4], a[5], a[6]), K[i], w[i%16]);
-      b[7] = add64(t, Sigma0(a[0]), Maj(a[0], a[1], a[2]));
-      b[3] = add64(b[3], t);
-      for (j = 0; j < 8; j++) a[(j+1)%8] = b[j];
-      if (i%16 === 15) {
-        for (j = 0; j < 16; j++) {
-          w[j] = add64(w[j], w[(j+9)%16], sigma0(w[(j+1)%16]), sigma1(w[(j+14)%16]));
-        }
-      }
-    }
-
-    for (i = 0; i < 8; i++) {
-      a[i] = add64(a[i], z[i]);
-      z[i] = a[i];
-    }
-
-    pos += 128;
-    n -= 128;
-  }
-
-  for (i = 0; i < 8; i++) ts64(x, 8*i, z[i]);
-  return n;
-}
-
-var iv = new Uint8Array([
-  0x6a,0x09,0xe6,0x67,0xf3,0xbc,0xc9,0x08,
-  0xbb,0x67,0xae,0x85,0x84,0xca,0xa7,0x3b,
-  0x3c,0x6e,0xf3,0x72,0xfe,0x94,0xf8,0x2b,
-  0xa5,0x4f,0xf5,0x3a,0x5f,0x1d,0x36,0xf1,
-  0x51,0x0e,0x52,0x7f,0xad,0xe6,0x82,0xd1,
-  0x9b,0x05,0x68,0x8c,0x2b,0x3e,0x6c,0x1f,
-  0x1f,0x83,0xd9,0xab,0xfb,0x41,0xbd,0x6b,
-  0x5b,0xe0,0xcd,0x19,0x13,0x7e,0x21,0x79
-]);
-
-function crypto_hash(out, m, n) {
-  var h = new Uint8Array(64), x = new Uint8Array(256);
-  var i, b = n;
-
-  for (i = 0; i < 64; i++) h[i] = iv[i];
-
-  crypto_hashblocks(h, m, n);
-  n %= 128;
-
-  for (i = 0; i < 256; i++) x[i] = 0;
-  for (i = 0; i < n; i++) x[i] = m[b-n+i];
-  x[n] = 128;
-
-  n = 256-128*(n<112?1:0);
-  x[n-9] = 0;
-  ts64(x, n-8, new u64((b / 0x20000000) | 0, b << 3));
-  crypto_hashblocks(h, x, n);
-
-  for (i = 0; i < 64; i++) out[i] = h[i];
-
-  return 0;
-}
-
-function add(p, q) {
-  var a = gf(), b = gf(), c = gf(),
-      d = gf(), e = gf(), f = gf(),
-      g = gf(), h = gf(), t = gf();
-
-  Z(a, p[1], p[0]);
-  Z(t, q[1], q[0]);
-  M(a, a, t);
-  A(b, p[0], p[1]);
-  A(t, q[0], q[1]);
-  M(b, b, t);
-  M(c, p[3], q[3]);
-  M(c, c, D2);
-  M(d, p[2], q[2]);
-  A(d, d, d);
-  Z(e, b, a);
-  Z(f, d, c);
-  A(g, d, c);
-  A(h, b, a);
-
-  M(p[0], e, f);
-  M(p[1], h, g);
-  M(p[2], g, f);
-  M(p[3], e, h);
-}
-
-function cswap(p, q, b) {
-  var i;
-  for (i = 0; i < 4; i++) {
-    sel25519(p[i], q[i], b);
-  }
-}
-
-function pack(r, p) {
-  var tx = gf(), ty = gf(), zi = gf();
-  inv25519(zi, p[2]);
-  M(tx, p[0], zi);
-  M(ty, p[1], zi);
-  pack25519(r, ty);
-  r[31] ^= par25519(tx) << 7;
-}
-
-function scalarmult(p, q, s) {
-  var b, i;
-  set25519(p[0], gf0);
-  set25519(p[1], gf1);
-  set25519(p[2], gf1);
-  set25519(p[3], gf0);
-  for (i = 255; i >= 0; --i) {
-    b = (s[(i/8)|0] >> (i&7)) & 1;
-    cswap(p, q, b);
-    add(q, p);
-    add(p, p);
-    cswap(p, q, b);
-  }
-}
-
-function scalarbase(p, s) {
-  var q = [gf(), gf(), gf(), gf()];
-  set25519(q[0], X);
-  set25519(q[1], Y);
-  set25519(q[2], gf1);
-  M(q[3], X, Y);
-  scalarmult(p, q, s);
-}
-
-function crypto_sign_keypair(pk, sk, seeded) {
-  var d = new Uint8Array(64);
-  var p = [gf(), gf(), gf(), gf()];
-  var i;
-
-  if (!seeded) randombytes(sk, 32);
-  crypto_hash(d, sk, 32);
-  d[0] &= 248;
-  d[31] &= 127;
-  d[31] |= 64;
-
-  scalarbase(p, d);
-  pack(pk, p);
-
-  for (i = 0; i < 32; i++) sk[i+32] = pk[i];
-  return 0;
-}
-
-var L = new Float64Array([0xed, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58, 0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x10]);
-
-function modL(r, x) {
-  var carry, i, j, k;
-  for (i = 63; i >= 32; --i) {
-    carry = 0;
-    for (j = i - 32, k = i - 12; j < k; ++j) {
-      x[j] += carry - 16 * x[i] * L[j - (i - 32)];
-      carry = Math.floor((x[j] + 128) / 256);
-      x[j] -= carry * 256;
-    }
-    x[j] += carry;
-    x[i] = 0;
-  }
-  carry = 0;
-  for (j = 0; j < 32; j++) {
-    x[j] += carry - (x[31] >> 4) * L[j];
-    carry = x[j] >> 8;
-    x[j] &= 255;
-  }
-  for (j = 0; j < 32; j++) x[j] -= carry * L[j];
-  for (i = 0; i < 32; i++) {
-    x[i+1] += x[i] >> 8;
-    r[i] = x[i] & 255;
-  }
-}
-
-function reduce(r) {
-  var x = new Float64Array(64), i;
-  for (i = 0; i < 64; i++) x[i] = r[i];
-  for (i = 0; i < 64; i++) r[i] = 0;
-  modL(r, x);
-}
-
-// Note: difference from C - smlen returned, not passed as argument.
-function crypto_sign(sm, m, n, sk) {
-  var d = new Uint8Array(64), h = new Uint8Array(64), r = new Uint8Array(64);
-  var i, j, x = new Float64Array(64);
-  var p = [gf(), gf(), gf(), gf()];
-
-  crypto_hash(d, sk, 32);
-  d[0] &= 248;
-  d[31] &= 127;
-  d[31] |= 64;
-
-  var smlen = n + 64;
-  for (i = 0; i < n; i++) sm[64 + i] = m[i];
-  for (i = 0; i < 32; i++) sm[32 + i] = d[32 + i];
-
-  crypto_hash(r, sm.subarray(32), n+32);
-  reduce(r);
-  scalarbase(p, r);
-  pack(sm, p);
-
-  for (i = 32; i < 64; i++) sm[i] = sk[i];
-  crypto_hash(h, sm, n + 64);
-  reduce(h);
-
-  for (i = 0; i < 64; i++) x[i] = 0;
-  for (i = 0; i < 32; i++) x[i] = r[i];
-  for (i = 0; i < 32; i++) {
-    for (j = 0; j < 32; j++) {
-      x[i+j] += h[i] * d[j];
-    }
-  }
-
-  modL(sm.subarray(32), x);
-  return smlen;
-}
-
-function unpackneg(r, p) {
-  var t = gf(), chk = gf(), num = gf(),
-      den = gf(), den2 = gf(), den4 = gf(),
-      den6 = gf();
-
-  set25519(r[2], gf1);
-  unpack25519(r[1], p);
-  S(num, r[1]);
-  M(den, num, D);
-  Z(num, num, r[2]);
-  A(den, r[2], den);
-
-  S(den2, den);
-  S(den4, den2);
-  M(den6, den4, den2);
-  M(t, den6, num);
-  M(t, t, den);
-
-  pow2523(t, t);
-  M(t, t, num);
-  M(t, t, den);
-  M(t, t, den);
-  M(r[0], t, den);
-
-  S(chk, r[0]);
-  M(chk, chk, den);
-  if (neq25519(chk, num)) M(r[0], r[0], I);
-
-  S(chk, r[0]);
-  M(chk, chk, den);
-  if (neq25519(chk, num)) return -1;
-
-  if (par25519(r[0]) === (p[31]>>7)) Z(r[0], gf0, r[0]);
-
-  M(r[3], r[0], r[1]);
-  return 0;
-}
-
-function crypto_sign_open(m, sm, n, pk) {
-  var i;
-  var t = new Uint8Array(32), h = new Uint8Array(64);
-  var p = [gf(), gf(), gf(), gf()],
-      q = [gf(), gf(), gf(), gf()];
-
-  if (n < 64) return -1;
-
-  if (unpackneg(q, pk)) return -1;
-
-  for (i = 0; i < n; i++) m[i] = sm[i];
-  for (i = 0; i < 32; i++) m[i+32] = pk[i];
-  crypto_hash(h, m, n);
-  reduce(h);
-  scalarmult(p, q, h);
-
-  scalarbase(q, sm.subarray(32));
-  add(p, q);
-  pack(t, p);
-
-  n -= 64;
-  if (crypto_verify_32(sm, 0, t, 0)) {
-    for (i = 0; i < n; i++) m[i] = 0;
-    return -1;
-  }
-
-  for (i = 0; i < n; i++) m[i] = sm[i + 64];
-  return n;
-}
-
-var crypto_secretbox_KEYBYTES = 32,
-    crypto_secretbox_NONCEBYTES = 24,
-    crypto_secretbox_ZEROBYTES = 32,
-    crypto_secretbox_BOXZEROBYTES = 16,
-    crypto_scalarmult_BYTES = 32,
-    crypto_scalarmult_SCALARBYTES = 32,
-    crypto_box_PUBLICKEYBYTES = 32,
-    crypto_box_SECRETKEYBYTES = 32,
-    crypto_box_BEFORENMBYTES = 32,
-    crypto_box_NONCEBYTES = crypto_secretbox_NONCEBYTES,
-    crypto_box_ZEROBYTES = crypto_secretbox_ZEROBYTES,
-    crypto_box_BOXZEROBYTES = crypto_secretbox_BOXZEROBYTES,
-    crypto_sign_BYTES = 64,
-    crypto_sign_PUBLICKEYBYTES = 32,
-    crypto_sign_SECRETKEYBYTES = 64,
-    crypto_sign_SEEDBYTES = 32,
-    crypto_hash_BYTES = 64;
-
-nacl.lowlevel = {
-  crypto_core_hsalsa20: crypto_core_hsalsa20,
-  crypto_stream_xor: crypto_stream_xor,
-  crypto_stream: crypto_stream,
-  crypto_stream_salsa20_xor: crypto_stream_salsa20_xor,
-  crypto_stream_salsa20: crypto_stream_salsa20,
-  crypto_onetimeauth: crypto_onetimeauth,
-  crypto_onetimeauth_verify: crypto_onetimeauth_verify,
-  crypto_verify_16: crypto_verify_16,
-  crypto_verify_32: crypto_verify_32,
-  crypto_secretbox: crypto_secretbox,
-  crypto_secretbox_open: crypto_secretbox_open,
-  crypto_scalarmult: crypto_scalarmult,
-  crypto_scalarmult_base: crypto_scalarmult_base,
-  crypto_box_beforenm: crypto_box_beforenm,
-  crypto_box_afternm: crypto_box_afternm,
-  crypto_box: crypto_box,
-  crypto_box_open: crypto_box_open,
-  crypto_box_keypair: crypto_box_keypair,
-  crypto_hash: crypto_hash,
-  crypto_sign: crypto_sign,
-  crypto_sign_keypair: crypto_sign_keypair,
-  crypto_sign_open: crypto_sign_open,
-
-  crypto_secretbox_KEYBYTES: crypto_secretbox_KEYBYTES,
-  crypto_secretbox_NONCEBYTES: crypto_secretbox_NONCEBYTES,
-  crypto_secretbox_ZEROBYTES: crypto_secretbox_ZEROBYTES,
-  crypto_secretbox_BOXZEROBYTES: crypto_secretbox_BOXZEROBYTES,
-  crypto_scalarmult_BYTES: crypto_scalarmult_BYTES,
-  crypto_scalarmult_SCALARBYTES: crypto_scalarmult_SCALARBYTES,
-  crypto_box_PUBLICKEYBYTES: crypto_box_PUBLICKEYBYTES,
-  crypto_box_SECRETKEYBYTES: crypto_box_SECRETKEYBYTES,
-  crypto_box_BEFORENMBYTES: crypto_box_BEFORENMBYTES,
-  crypto_box_NONCEBYTES: crypto_box_NONCEBYTES,
-  crypto_box_ZEROBYTES: crypto_box_ZEROBYTES,
-  crypto_box_BOXZEROBYTES: crypto_box_BOXZEROBYTES,
-  crypto_sign_BYTES: crypto_sign_BYTES,
-  crypto_sign_PUBLICKEYBYTES: crypto_sign_PUBLICKEYBYTES,
-  crypto_sign_SECRETKEYBYTES: crypto_sign_SECRETKEYBYTES,
-  crypto_sign_SEEDBYTES: crypto_sign_SEEDBYTES,
-  crypto_hash_BYTES: crypto_hash_BYTES,
-
-  gf: gf,
-  D: D,
-  L: L,
-  pack25519: pack25519,
-  unpack25519: unpack25519,
-  M: M,
-  A: A,
-  S: S,
-  Z: Z,
-  pow2523: pow2523,
-  add: add,
-  set25519: set25519,
-  modL: modL,
-  scalarmult: scalarmult,
-  scalarbase: scalarbase,
-};
-
-/* High-level API */
-
-function checkLengths(k, n) {
-  if (k.length !== crypto_secretbox_KEYBYTES) throw new Error('bad key size');
-  if (n.length !== crypto_secretbox_NONCEBYTES) throw new Error('bad nonce size');
-}
-
-function checkBoxLengths(pk, sk) {
-  if (pk.length !== crypto_box_PUBLICKEYBYTES) throw new Error('bad public key size');
-  if (sk.length !== crypto_box_SECRETKEYBYTES) throw new Error('bad secret key size');
-}
-
-function checkArrayTypes() {
-  for (var i = 0; i < arguments.length; i++) {
-    if (!(arguments[i] instanceof Uint8Array))
-      throw new TypeError('unexpected type, use Uint8Array');
-  }
-}
-
-function cleanup(arr) {
-  for (var i = 0; i < arr.length; i++) arr[i] = 0;
-}
-
-nacl.randomBytes = function(n) {
-  var b = new Uint8Array(n);
-  randombytes(b, n);
-  return b;
-};
-
-nacl.secretbox = function(msg, nonce, key) {
-  checkArrayTypes(msg, nonce, key);
-  checkLengths(key, nonce);
-  var m = new Uint8Array(crypto_secretbox_ZEROBYTES + msg.length);
-  var c = new Uint8Array(m.length);
-  for (var i = 0; i < msg.length; i++) m[i+crypto_secretbox_ZEROBYTES] = msg[i];
-  crypto_secretbox(c, m, m.length, nonce, key);
-  return c.subarray(crypto_secretbox_BOXZEROBYTES);
-};
-
-nacl.secretbox.open = function(box, nonce, key) {
-  checkArrayTypes(box, nonce, key);
-  checkLengths(key, nonce);
-  var c = new Uint8Array(crypto_secretbox_BOXZEROBYTES + box.length);
-  var m = new Uint8Array(c.length);
-  for (var i = 0; i < box.length; i++) c[i+crypto_secretbox_BOXZEROBYTES] = box[i];
-  if (c.length < 32) return null;
-  if (crypto_secretbox_open(m, c, c.length, nonce, key) !== 0) return null;
-  return m.subarray(crypto_secretbox_ZEROBYTES);
-};
-
-nacl.secretbox.keyLength = crypto_secretbox_KEYBYTES;
-nacl.secretbox.nonceLength = crypto_secretbox_NONCEBYTES;
-nacl.secretbox.overheadLength = crypto_secretbox_BOXZEROBYTES;
-
-nacl.scalarMult = function(n, p) {
-  checkArrayTypes(n, p);
-  if (n.length !== crypto_scalarmult_SCALARBYTES) throw new Error('bad n size');
-  if (p.length !== crypto_scalarmult_BYTES) throw new Error('bad p size');
-  var q = new Uint8Array(crypto_scalarmult_BYTES);
-  crypto_scalarmult(q, n, p);
-  return q;
-};
-
-nacl.scalarMult.base = function(n) {
-  checkArrayTypes(n);
-  if (n.length !== crypto_scalarmult_SCALARBYTES) throw new Error('bad n size');
-  var q = new Uint8Array(crypto_scalarmult_BYTES);
-  crypto_scalarmult_base(q, n);
-  return q;
-};
-
-nacl.scalarMult.scalarLength = crypto_scalarmult_SCALARBYTES;
-nacl.scalarMult.groupElementLength = crypto_scalarmult_BYTES;
-
-nacl.box = function(msg, nonce, publicKey, secretKey) {
-  var k = nacl.box.before(publicKey, secretKey);
-  return nacl.secretbox(msg, nonce, k);
-};
-
-nacl.box.before = function(publicKey, secretKey) {
-  checkArrayTypes(publicKey, secretKey);
-  checkBoxLengths(publicKey, secretKey);
-  var k = new Uint8Array(crypto_box_BEFORENMBYTES);
-  crypto_box_beforenm(k, publicKey, secretKey);
-  return k;
-};
-
-nacl.box.after = nacl.secretbox;
-
-nacl.box.open = function(msg, nonce, publicKey, secretKey) {
-  var k = nacl.box.before(publicKey, secretKey);
-  return nacl.secretbox.open(msg, nonce, k);
-};
-
-nacl.box.open.after = nacl.secretbox.open;
-
-nacl.box.keyPair = function() {
-  var pk = new Uint8Array(crypto_box_PUBLICKEYBYTES);
-  var sk = new Uint8Array(crypto_box_SECRETKEYBYTES);
-  crypto_box_keypair(pk, sk);
-  return {publicKey: pk, secretKey: sk};
-};
-
-nacl.box.keyPair.fromSecretKey = function(secretKey) {
-  checkArrayTypes(secretKey);
-  if (secretKey.length !== crypto_box_SECRETKEYBYTES)
-    throw new Error('bad secret key size');
-  var pk = new Uint8Array(crypto_box_PUBLICKEYBYTES);
-  crypto_scalarmult_base(pk, secretKey);
-  return {publicKey: pk, secretKey: new Uint8Array(secretKey)};
-};
-
-nacl.box.publicKeyLength = crypto_box_PUBLICKEYBYTES;
-nacl.box.secretKeyLength = crypto_box_SECRETKEYBYTES;
-nacl.box.sharedKeyLength = crypto_box_BEFORENMBYTES;
-nacl.box.nonceLength = crypto_box_NONCEBYTES;
-nacl.box.overheadLength = nacl.secretbox.overheadLength;
-
-nacl.sign = function(msg, secretKey) {
-  checkArrayTypes(msg, secretKey);
-  if (secretKey.length !== crypto_sign_SECRETKEYBYTES)
-    throw new Error('bad secret key size');
-  var signedMsg = new Uint8Array(crypto_sign_BYTES+msg.length);
-  crypto_sign(signedMsg, msg, msg.length, secretKey);
-  return signedMsg;
-};
-
-nacl.sign.open = function(signedMsg, publicKey) {
-  checkArrayTypes(signedMsg, publicKey);
-  if (publicKey.length !== crypto_sign_PUBLICKEYBYTES)
-    throw new Error('bad public key size');
-  var tmp = new Uint8Array(signedMsg.length);
-  var mlen = crypto_sign_open(tmp, signedMsg, signedMsg.length, publicKey);
-  if (mlen < 0) return null;
-  var m = new Uint8Array(mlen);
-  for (var i = 0; i < m.length; i++) m[i] = tmp[i];
-  return m;
-};
-
-nacl.sign.detached = function(msg, secretKey) {
-  var signedMsg = nacl.sign(msg, secretKey);
-  var sig = new Uint8Array(crypto_sign_BYTES);
-  for (var i = 0; i < sig.length; i++) sig[i] = signedMsg[i];
-  return sig;
-};
-
-nacl.sign.detached.verify = function(msg, sig, publicKey) {
-  checkArrayTypes(msg, sig, publicKey);
-  if (sig.length !== crypto_sign_BYTES)
-    throw new Error('bad signature size');
-  if (publicKey.length !== crypto_sign_PUBLICKEYBYTES)
-    throw new Error('bad public key size');
-  var sm = new Uint8Array(crypto_sign_BYTES + msg.length);
-  var m = new Uint8Array(crypto_sign_BYTES + msg.length);
-  var i;
-  for (i = 0; i < crypto_sign_BYTES; i++) sm[i] = sig[i];
-  for (i = 0; i < msg.length; i++) sm[i+crypto_sign_BYTES] = msg[i];
-  return (crypto_sign_open(m, sm, sm.length, publicKey) >= 0);
-};
-
-nacl.sign.keyPair = function() {
-  var pk = new Uint8Array(crypto_sign_PUBLICKEYBYTES);
-  var sk = new Uint8Array(crypto_sign_SECRETKEYBYTES);
-  crypto_sign_keypair(pk, sk);
-  return {publicKey: pk, secretKey: sk};
-};
-
-nacl.sign.keyPair.fromSecretKey = function(secretKey) {
-  checkArrayTypes(secretKey);
-  if (secretKey.length !== crypto_sign_SECRETKEYBYTES)
-    throw new Error('bad secret key size');
-  var pk = new Uint8Array(crypto_sign_PUBLICKEYBYTES);
-  for (var i = 0; i < pk.length; i++) pk[i] = secretKey[32+i];
-  return {publicKey: pk, secretKey: new Uint8Array(secretKey)};
-};
-
-nacl.sign.keyPair.fromSeed = function(seed) {
-  checkArrayTypes(seed);
-  if (seed.length !== crypto_sign_SEEDBYTES)
-    throw new Error('bad seed size');
-  var pk = new Uint8Array(crypto_sign_PUBLICKEYBYTES);
-  var sk = new Uint8Array(crypto_sign_SECRETKEYBYTES);
-  for (var i = 0; i < 32; i++) sk[i] = seed[i];
-  crypto_sign_keypair(pk, sk, true);
-  return {publicKey: pk, secretKey: sk};
-};
-
-nacl.sign.publicKeyLength = crypto_sign_PUBLICKEYBYTES;
-nacl.sign.secretKeyLength = crypto_sign_SECRETKEYBYTES;
-nacl.sign.seedLength = crypto_sign_SEEDBYTES;
-nacl.sign.signatureLength = crypto_sign_BYTES;
-
-nacl.hash = function(msg) {
-  checkArrayTypes(msg);
-  var h = new Uint8Array(crypto_hash_BYTES);
-  crypto_hash(h, msg, msg.length);
-  return h;
-};
-
-nacl.hash.hashLength = crypto_hash_BYTES;
-
-nacl.verify = function(x, y) {
-  checkArrayTypes(x, y);
-  // Zero length arguments are considered not equal.
-  if (x.length === 0 || y.length === 0) return false;
-  if (x.length !== y.length) return false;
-  return (vn(x, 0, y, 0, x.length) === 0) ? true : false;
-};
-
-nacl.setPRNG = function(fn) {
-  randombytes = fn;
-};
-
-(function() {
-  // Initialize PRNG if environment provides CSPRNG.
-  // If not, methods calling randombytes will throw.
-  var crypto = typeof self !== 'undefined' ? (self.crypto || self.msCrypto) : null;
-  if (crypto && crypto.getRandomValues) {
-    // Browsers.
-    var QUOTA = 65536;
-    nacl.setPRNG(function(x, n) {
-      var i, v = new Uint8Array(n);
-      for (i = 0; i < n; i += QUOTA) {
-        crypto.getRandomValues(v.subarray(i, i + Math.min(n - i, QUOTA)));
-      }
-      for (i = 0; i < n; i++) x[i] = v[i];
-      cleanup(v);
-    });
-  } else if (typeof require !== 'undefined') {
-    // Node.js.
-    crypto = require('crypto');
-    if (crypto && crypto.randomBytes) {
-      nacl.setPRNG(function(x, n) {
-        var i, v = crypto.randomBytes(n);
-        for (i = 0; i < n; i++) x[i] = v[i];
-        cleanup(v);
-      });
-    }
-  }
-})();
-
-})(typeof module !== 'undefined' && module.exports ? module.exports : (self.nacl = self.nacl || {}));
diff --git a/jrx/scratch/old_content.ts b/jrx/scratch/old_content.ts
new file mode 100644
index 0000000..5ad40dd
--- /dev/null
+++ b/jrx/scratch/old_content.ts
@@ -0,0 +1,261 @@
+/**
+ * JR Content Script
+ *
+ * @module
+ */
+
+
+jr_main();
+
+
+/**
+ * This is the "meat" of what is spammed to the page script when the user makes
+ * the wallet detectable.
+ *
+ * If you go read the AWCP documentation, there's a bunch of layers. This is I
+ * think the innermost layer.
+ */
+function detect_msg() {
+    return {id        : "jr",
+            name      : "JR",
+            networkId : "ae_uat",
+            origin    : "foobar",
+            type      : "extension"};
+}
+
+
+
+
+/**
+ * Post {@link detect_awcp_msg} into the window message queue
+ */
+function
+post_detect_msg
+    (msg: object)
+{
+    window.postMessage(msg, '*');
+}
+
+
+
+/**
+ * For 2 minutes, make the wallet detectable to a page script
+ */
+async function
+mk_detectable
+    (msg: object)
+{
+    while (true)
+    // 3 seconds times 40 is 2 minutes
+    // for (let i=1; i<=40; i++)
+    {
+        console.error('pee');
+        post_detect_msg(msg);
+        await sleep(3000);
+    }
+}
+
+
+
+/**
+ * sleep for the given number of ms
+ */
+async function
+sleep
+    (ms: number)
+    : Promise<void>
+{
+    return new Promise(resolve => setTimeout(resolve, ms));
+}
+
+
+/**
+ * This handles messages from *other parts of the extension*
+ */
+function
+handler
+    (msg: any)
+{
+    console.error('message: ', msg);
+    switch(msg)
+    {
+        case 'mk-detectable':
+            mk_detectable();
+            return;
+        default:
+            console.error('your mom is dead');
+    }
+}
+
+
+
+/**
+ * This handles messages from page scripts
+ */
+function
+window_message_handler
+    (msg: {data: any})
+{
+    console.error('the science is coming', msg);
+    // example science:
+    // {
+    //   "type": "to_waellet",
+    //   "data": {
+    //     "jsonrpc": "2.0",
+    //     "id": "ske-connect-1",
+    //     "method": "connection.open",
+    //     "params": {
+    //       "name": "sidekick examples",
+    //       "version": 1
+    //     }
+    //   }
+    // }
+    let the_science = msg.data;
+    console.error('THE SCIENCE: ', the_science);
+    console.error('is the science good or bad?');
+    if (the_science.type === 'to_waellet')
+    {
+        console.error('the science is good');
+        the_science_is_good(the_science.data);
+    }
+    else
+        console.error('the science is bad');
+}
+
+
+
+/**
+ * window_message_handler handles all messages sent into the event bus,
+ * including messages that we sent (yay js). window_message_handler branches on
+ * whether the message is for us or not (is the science good or bad?). If the
+ * message is for us (the science is good), then this function is triggered.
+ *
+ * The bottom line is this is the function that *actually* handles messages
+ * from the window
+ */
+function
+the_science_is_good
+    (awcp_rcp_data: {id     : string | number,
+                     method : string,
+                     params : object})
+{
+    // example science data:
+    // // layer 3: json rpc
+    // {jsonrpc : "2.0",
+    //  id      : "ske-connect-1",
+    //  method  : "connection.open",
+    //            // layer 4: AWCP-specific semantics
+    //  params  : {name    : "sidekick examples",
+    //             version : 1}}}
+    // can assume it is a call
+    let msg_ident  = awcp_rcp_data.id;
+    let msg_method = awcp_rcp_data.method;
+    // branch here on the "method" field
+    switch (msg_method)
+    {
+        case "connection.open":
+            post_connect_msg(msg_ident);
+            break;
+        case "address.subscribe":
+            bg_address_subscribe(msg_ident);
+            break;
+        case "transaction.sign":
+            bg_tx_sign(msg_ident, awcp_rcp_data.params);
+            break;
+        case "message.sign":
+            bg_msg_sign(msg_ident, awcp_rcp_data.params);
+            break;
+        default:
+            console.error('the science is worse than i initially thought');
+            console.error("we're going to have to put the science to sleep");
+    }
+}
+
+/**
+ * Called in response to "connection.open" requests from page scripts
+ *
+ * FIXME: this should query the user to see if he wants to connect
+ */
+function
+post_connect_msg
+    (msg_ident : string | number)
+{
+    // : EventData_W2A_connection_open
+    // http://localhost:6969/local-awcp-0.2.1/types/EventData_W2A_connection_open.html
+    let connect_response =
+            {type: "to_aepp",
+             data: {jsonrpc: "2.0",
+                    id: msg_ident,
+                    method: "connection.open",
+                    result: detect_msg()}};
+    window.postMessage(connect_response, '*');
+}
+
+
+
+/**
+ * Called in response to "address.subscribe" requests from page scripts
+ *
+ * this is to get the wallet's address
+ */
+function
+bg_address_subscribe
+    (msg_ident: string | number)
+{
+    
+}
+
+
+
+/**
+ * Called in response to "transaction.sign" requests from page scripts
+ *
+ * user wants us to sign a transaction
+ */
+function
+bg_tx_sign
+    (msg_ident : string | number,
+     params    : object)
+{
+}
+
+
+
+/**
+ * Called in response to "message.sign" requests from page scripts
+ *
+ * user wants us to sign a message
+ */
+function
+bg_msg_sign
+    (msg_ident : string | number,
+     params    : object)
+{
+}
+
+
+async function
+jr_main
+    ()
+{
+    // @ts-ignore browser
+   // browser.runtime.onMessage.addListener(handler);
+    window.addEventListener('message', window_message_handler);
+
+
+
+
+    /**
+     * This is the message that we spam the page script with when the user clicks
+     * the "make wallet detectable" button.
+     *
+     * Contains {@link detect_msg} as a field
+     */
+    let detect_awcp_msg = {type : "to_aepp",
+                           data : {jsonrpc : "2.0",
+                                   method  : "connection.announcePresence",
+                                   params  : detect_msg()}};
+
+    // mk detectable
+    mk_detectable(detect_awcp_msg);
+}
diff --git a/jrx/src/content.ts b/jrx/src/content.ts
index 5ad40dd..6448001 100644
--- a/jrx/src/content.ts
+++ b/jrx/src/content.ts
@@ -1,246 +1,27 @@
 /**
  * JR Content Script
  *
+ * Notes:
+ *
+ * 1. This is not loaded as a module, which means it has limited permissions.
+ *    In particular, asynchronous calls are 1000x more annoying.
+ * 2. All this does is relay messages between here and the background script
+ *    (i.e. application controller).
+ *
  * @module
  */
 
 
-jr_main();
-
-
-/**
- * This is the "meat" of what is spammed to the page script when the user makes
- * the wallet detectable.
- *
- * If you go read the AWCP documentation, there's a bunch of layers. This is I
- * think the innermost layer.
- */
-function detect_msg() {
-    return {id        : "jr",
-            name      : "JR",
-            networkId : "ae_uat",
-            origin    : "foobar",
-            type      : "extension"};
-}
-
-
-
-
-/**
- * Post {@link detect_awcp_msg} into the window message queue
- */
-function
-post_detect_msg
-    (msg: object)
-{
-    window.postMessage(msg, '*');
-}
-
-
-
-/**
- * For 2 minutes, make the wallet detectable to a page script
- */
-async function
-mk_detectable
-    (msg: object)
-{
-    while (true)
-    // 3 seconds times 40 is 2 minutes
-    // for (let i=1; i<=40; i++)
-    {
-        console.error('pee');
-        post_detect_msg(msg);
-        await sleep(3000);
-    }
-}
-
-
-
-/**
- * sleep for the given number of ms
- */
-async function
-sleep
-    (ms: number)
-    : Promise<void>
-{
-    return new Promise(resolve => setTimeout(resolve, ms));
-}
-
-
-/**
- * This handles messages from *other parts of the extension*
- */
-function
-handler
-    (msg: any)
-{
-    console.error('message: ', msg);
-    switch(msg)
-    {
-        case 'mk-detectable':
-            mk_detectable();
-            return;
-        default:
-            console.error('your mom is dead');
-    }
-}
-
-
-
-/**
- * This handles messages from page scripts
- */
-function
-window_message_handler
-    (msg: {data: any})
-{
-    console.error('the science is coming', msg);
-    // example science:
-    // {
-    //   "type": "to_waellet",
-    //   "data": {
-    //     "jsonrpc": "2.0",
-    //     "id": "ske-connect-1",
-    //     "method": "connection.open",
-    //     "params": {
-    //       "name": "sidekick examples",
-    //       "version": 1
-    //     }
-    //   }
-    // }
-    let the_science = msg.data;
-    console.error('THE SCIENCE: ', the_science);
-    console.error('is the science good or bad?');
-    if (the_science.type === 'to_waellet')
-    {
-        console.error('the science is good');
-        the_science_is_good(the_science.data);
-    }
-    else
-        console.error('the science is bad');
-}
-
-
-
-/**
- * window_message_handler handles all messages sent into the event bus,
- * including messages that we sent (yay js). window_message_handler branches on
- * whether the message is for us or not (is the science good or bad?). If the
- * message is for us (the science is good), then this function is triggered.
- *
- * The bottom line is this is the function that *actually* handles messages
- * from the window
- */
-function
-the_science_is_good
-    (awcp_rcp_data: {id     : string | number,
-                     method : string,
-                     params : object})
-{
-    // example science data:
-    // // layer 3: json rpc
-    // {jsonrpc : "2.0",
-    //  id      : "ske-connect-1",
-    //  method  : "connection.open",
-    //            // layer 4: AWCP-specific semantics
-    //  params  : {name    : "sidekick examples",
-    //             version : 1}}}
-    // can assume it is a call
-    let msg_ident  = awcp_rcp_data.id;
-    let msg_method = awcp_rcp_data.method;
-    // branch here on the "method" field
-    switch (msg_method)
-    {
-        case "connection.open":
-            post_connect_msg(msg_ident);
-            break;
-        case "address.subscribe":
-            bg_address_subscribe(msg_ident);
-            break;
-        case "transaction.sign":
-            bg_tx_sign(msg_ident, awcp_rcp_data.params);
-            break;
-        case "message.sign":
-            bg_msg_sign(msg_ident, awcp_rcp_data.params);
-            break;
-        default:
-            console.error('the science is worse than i initially thought');
-            console.error("we're going to have to put the science to sleep");
-    }
-}
-
-/**
- * Called in response to "connection.open" requests from page scripts
- *
- * FIXME: this should query the user to see if he wants to connect
- */
-function
-post_connect_msg
-    (msg_ident : string | number)
-{
-    // : EventData_W2A_connection_open
-    // http://localhost:6969/local-awcp-0.2.1/types/EventData_W2A_connection_open.html
-    let connect_response =
-            {type: "to_aepp",
-             data: {jsonrpc: "2.0",
-                    id: msg_ident,
-                    method: "connection.open",
-                    result: detect_msg()}};
-    window.postMessage(connect_response, '*');
-}
-
-
-
-/**
- * Called in response to "address.subscribe" requests from page scripts
- *
- * this is to get the wallet's address
- */
-function
-bg_address_subscribe
-    (msg_ident: string | number)
-{
-    
-}
-
-
-
-/**
- * Called in response to "transaction.sign" requests from page scripts
- *
- * user wants us to sign a transaction
- */
-function
-bg_tx_sign
-    (msg_ident : string | number,
-     params    : object)
-{
-}
-
-
-
-/**
- * Called in response to "message.sign" requests from page scripts
- *
- * user wants us to sign a message
- */
-function
-bg_msg_sign
-    (msg_ident : string | number,
-     params    : object)
-{
-}
+jr_content_main();
 
 
 async function
-jr_main
+jr_content_main
     ()
 {
-    // @ts-ignore browser
-   // browser.runtime.onMessage.addListener(handler);
-    window.addEventListener('message', window_message_handler);
+   // @ts-ignore browser
+   browser.runtime.onMessage.addListener(handler);
+   window.addEventListener('message', page_script_message_handler);
 
 
 
diff --git a/jrx/src/jr_ipc.ts b/jrx/src/jr_ipc.ts
new file mode 100644
index 0000000..9def49f
--- /dev/null
+++ b/jrx/src/jr_ipc.ts
@@ -0,0 +1,12 @@
+/**
+ * Definitions of messages that are passed between process A and process B in
+ * JR. Example: how the content script talks to the background script.
+ *
+ * @module
+ */
+
+/**
+ * this is the message sent from the content script to the background script
+ * when a page script requests
+ */
+type c2b_addr_subscribe = "address_subscribe";