Merge pull request #71 from orblivion/patch-1

Suggest libcapnp-dev instead of capnproto-dev

README.md

@@ -22,7 +22,7 @@ messages from complete Javascript objects.  This actually makes the library
 somewhat nicer syntactically than it would be otherwise, but it is not fast.
 
 A pure-Javascript implementation would likely be much faster.  See
-[capnp-js](https://github.com/capnp-js/serialization) for such an
+[capnp-js](https://github.com/capnp-js) for such an
 implementation.  Unfortunately, that implementation is incomplete and does not
 support [RPC](https://github.com/capnp-js/rpc) just yet.  Hence, this hack was 
 created for short-term use.
@@ -47,11 +47,11 @@ you must have development headers for Cap'n Proto and Node.js installed, along
 with the `node-gyp` tool and a GCC new enough for Cap'n Proto (at least 4.7).
 On Debian/Ubuntu, you can install these like so:
 
-    sudo apt-get install nodejs-dev nodejs-legacy capnproto-dev g++
+    sudo apt-get install nodejs-dev nodejs-legacy libcapnp-dev g++
 
-### Form source
+### From source
 
-    git clone git://github.com/kenton/node-capnp.git
+    git clone git://github.com/capnproto/node-capnp.git
     cd node-capnp
     npm install
 
@@ -118,6 +118,25 @@ we copied.)
     // object containing the results by name.
     promise.then(function(response) {
       console.log(response.namedResult);
+    })
+    // If the remote object throws an rpc exception, the promise will be
+    // rejected. The error returned will have a property `kjType`, which
+    // will be a string representation of the exception's `type` field.
+    .catch(function(error) {
+        switch(error.kjType) {
+        case 'failed':
+            console.log("A generic problem occurred:", error.message);
+            break;
+        case 'overloaded':
+            console.log("Resource overload on the remote end:", error.message);
+            break;
+        case 'disconnected':
+            // ...
+            break;
+        case 'unimplemented':
+            // ...
+            break;
+        }
     });
 
 ### Pipelining
@@ -196,6 +215,22 @@ then use that:
 In this case, the library only wraps `myFoo` as a capability once, and then
 calls `close()` once all copies of that reference have been dropped.
 
+If one of your methods throws an exception, or returns a promise which
+is subsequently rejected, it will be converted to a capnproto rpc
+exception. If the exception has a `kjType` property, that will be used
+for the exception's `type` field, otherwise the type will be `failed`.
+
+    var myBar = {
+        bar: function(foo) {
+            if(!bazAvailable()) {
+                var err = new Error("The baz is busy; try again later.");
+                err.kjType = 'overloaded';
+                throw(err);
+            }
+            // ...
+        }
+    }
+
 ### Exporting a bootstrap capability
 
     // Connect to another server and export `myFoo` as a bootstrap capability.

bin/.gitignore

@@ -0,0 +1 @@
+capnp.node

binding.gyp

@@ -4,12 +4,12 @@
       'target_name': 'capnp',
       'sources': ['src/node-capnp/capnp.cc'],
       'libraries': ['-lkj', '-lkj-async', '-lcapnp', '-lcapnpc', '-lcapnp-rpc'],
-      'cflags_cc': ['-std=c++11'],
+      'cflags_cc': ['-std=c++14'],
       'cflags_cc!': ['-fno-rtti', '-fno-exceptions'],
       'conditions': [
         [ 'OS=="mac"', {
           'xcode_settings': {
-            'OTHER_CPLUSPLUSFLAGS' : ['-std=c++11','-stdlib=libc++'],
+            'OTHER_CPLUSPLUSFLAGS' : ['-std=c++14','-stdlib=libc++'],
             'OTHER_LDFLAGS': ['-stdlib=libc++'],
             'GCC_ENABLE_CPP_RTTI': 'YES',
             'GCC_ENABLE_CPP_EXCEPTIONS': 'YES',

build.js

@@ -72,10 +72,13 @@ if (!force) {
 
 // Build it
 function build() {
-	cp.spawn(
+	var sp = cp.spawn(
 		process.platform === 'win32' ? 'node-gyp.cmd' : 'node-gyp',
 		['rebuild'].concat(args),
-		{customFds: [0, 1, 2]})
+		{customFds: [0, 1, 2]});
+
+	sp
+	.on('close', function(){ afterBuild(); })
 	.on('exit', function(err) {
 		if (err) {
 			if (err === 127) {
@@ -88,8 +91,9 @@ function build() {
 			}
 			return process.exit(err);
 		}
-		afterBuild();
 	});
+	sp.stdout.pipe(process.stdout);
+	sp.stderr.pipe(process.stderr);
 }
 
 // Move it to expected location

c++.capnp.js

@@ -0,0 +1 @@
+module.exports = require("capnp").importSystem("capnp/c++.capnp");

package.json

@@ -1,8 +1,11 @@
 {
   "name": "capnp",
-  "version": "0.1.11",
+  "version": "0.5.0",
   "description": "A wrapper for the C++ Cap'n Proto library",
-  "keywords": [ "capnproto", "serialization" ],
+  "keywords": [
+    "capnproto",
+    "serialization"
+  ],
   "homepage": "http://capnproto.org",
   "author": {
     "name": "Kenton Varda",
@@ -15,11 +18,8 @@
       "email": "jparyani@gmail.com"
     }
   ],
-
   "main": "src/node-capnp/capnp.js",
-  "peerDependencies": {
-    "es6-promise": "1.x"
-  },
+  "types": "src/node-capnp/capnp.d.ts",
   "scripts": {
     "install": "node ./build.js",
     "test": "node src/node-capnp/capnp-test.js"
@@ -29,7 +29,7 @@
     "url": "git://github.com/kentonv/node-capnp.git"
   },
   "engines": {
-    "node": "0.10.x"
+    "node": ">=10.0"
   },
   "license": "MIT"
 }

persistent.capnp.js

@@ -0,0 +1 @@
+module.exports = require("capnp").importSystem("capnp/persistent.capnp");

rpc-twoparty.capnp.js

@@ -0,0 +1 @@
+module.exports = require("capnp").importSystem("capnp/rpc-twoparty.capnp");

rpc.capnp.js

@@ -0,0 +1 @@
+module.exports = require("capnp").importSystem("capnp/rpc.capnp");

schema.capnp.js

@@ -0,0 +1 @@
+module.exports = require("capnp").importSystem("capnp/schema.capnp");

src/node-capnp/capnp-test.js

@@ -22,16 +22,24 @@
 var fs = require("fs");
 var capnp = require("./capnp");
 var assert = require("assert");
-var Promise = require("es6-promise").Promise;
 var spawn = require("child_process").spawn;
 
 var goldenBinary;
+var goldenPackedBinary;
+var goldenFlatBinary;
+var goldenPackedFlatBinary;
 try {
   // Works in Ekam build.
   goldenBinary = fs.readFileSync("node-capnp/testdata/binary");
+  goldenPackedBinary = fs.readFileSync("node-capnp/testdata/packedbinary");
+  goldenFlatBinary = fs.readFileSync("node-capnp/testdata/flat");
+  goldenPackedFlatBinary = fs.readFileSync("node-capnp/testdata/packedflat");
 } catch (ex) {
   // Works in npm build.
   goldenBinary = fs.readFileSync("src/node-capnp/testdata/binary");
+  goldenPackedBinary = fs.readFileSync("src/node-capnp/testdata/packedbinary");
+  goldenFlatBinary = fs.readFileSync("src/node-capnp/testdata/flat");
+  goldenPackedFlatBinary = fs.readFileSync("src/node-capnp/testdata/packedflat");
 }
 
 var test = require("./test.capnp");
@@ -54,11 +62,142 @@ assert.equal("foo", test.TestConstants.textConst);
 assert.equal("baz", test.TestConstants.structConst.textField);
 assert.equal("xyzzy", test.TestConstants.textListConst[1]);
 
-// =======================================================================================
+// Test packed serialization/deserialization
 
-/*
-// TODO(someday): Revive this test. The main problem is that it depends on calculator-server from
-//   the Cap'n Proto samples directory.
+var parsedPacked = capnp.parsePacked(test.TestAllTypes, goldenPackedBinary);
+var roundTrippedPacked = capnp.serializePacked(test.TestAllTypes, parsedPacked);
+assert.equal(goldenPackedBinary.length, roundTrippedPacked.length, "Round trip changed size?");
+assert.equal(goldenPackedBinary.toString("base64"), roundTrippedPacked.toString("base64"), "Round trip lost data?");
+
+var parsedFlat = capnp.parse(test.TestAllTypes, goldenFlatBinary, {flat: true});
+var roundTrippedFlat = capnp.serialize(test.TestAllTypes, parsedFlat, {flat: true});
+assert.equal(goldenFlatBinary.length, roundTrippedFlat.length, "Round trip changed size?");
+assert.equal(goldenFlatBinary.toString("base64"), roundTrippedFlat.toString("base64"), "Round trip lost data?");
+
+var parsedPackedFlat = capnp.parse(test.TestAllTypes, goldenPackedFlatBinary, {packed: true, flat: true});
+var roundTrippedPackedFlat = capnp.serialize(test.TestAllTypes, parsedPackedFlat, {packed: true, flat: true});
+assert.equal(goldenPackedFlatBinary.length, roundTrippedPackedFlat.length, "Round trip changed size?");
+assert.equal(goldenPackedFlatBinary.toString("base64"), roundTrippedPackedFlat.toString("base64"), "Round trip lost data?");
+
+// TODO(someday): do a more thorough deep equality comparison of parsed and parsedPacked
+var keys = ["voidField", "boolField", "int8Field", "int16Field", "int32Field", "int64Field"];
+for (var key in keys) {
+  assert.equal(parsed[key], parsedPacked[key]);
+  assert.equal(parsed[key], parsedFlat[key]);
+  assert.equal(parsed[key], parsedPackedFlat[key]);
+}
+
+console.log("serialization: pass");
+
+// =======================================================================================
+// Test matchPowerboxQuery
+
+if (capnp.matchPowerboxQuery) {
+
+var tag1 = capnp.serialize(test.TestAllTypes, {int32Field: 123});
+var tag2 = capnp.serialize(test.TestAllTypes, {int32Field: 321});
+var tag3 = capnp.serialize(test.TestAllTypes, {});
+
+assert(capnp.matchPowerboxQuery(tag1, tag1));
+assert(capnp.matchPowerboxQuery(tag2, tag2));
+assert(capnp.matchPowerboxQuery(tag3, tag3));
+
+assert(!capnp.matchPowerboxQuery(tag1, tag2));
+assert(!capnp.matchPowerboxQuery(tag2, tag3));
+assert(!capnp.matchPowerboxQuery(tag3, tag1));
+
+var emptyTag = capnp.serialize(test.TestEmptyStruct, {});
+assert(!capnp.matchPowerboxQuery(emptyTag, tag1));
+assert(!capnp.matchPowerboxQuery(emptyTag, tag2));
+assert(capnp.matchPowerboxQuery(emptyTag, tag3));
+assert(!capnp.matchPowerboxQuery(tag1, emptyTag));
+assert(!capnp.matchPowerboxQuery(tag2, emptyTag));
+assert(capnp.matchPowerboxQuery(tag3, emptyTag));
+
+// Test comparing pointers.
+var tagStr1 = capnp.serialize(test.TestAllTypes, {textField: "foo"});
+var tagStr2 = capnp.serialize(test.TestAllTypes, {textField: "bar"});
+var tagStr3 = capnp.serialize(test.TestAllTypes, {textField: ""});
+assert(capnp.matchPowerboxQuery(tagStr1, tagStr1));
+assert(capnp.matchPowerboxQuery(tagStr2, tagStr2));
+assert(capnp.matchPowerboxQuery(tagStr3, tagStr3));
+assert(!capnp.matchPowerboxQuery(tagStr1, tagStr2));
+assert(!capnp.matchPowerboxQuery(tagStr2, tagStr3));
+assert(!capnp.matchPowerboxQuery(tagStr3, tagStr1));
+assert(capnp.matchPowerboxQuery(tagStr1, emptyTag));
+assert(capnp.matchPowerboxQuery(tagStr2, emptyTag));
+assert(capnp.matchPowerboxQuery(tagStr3, emptyTag));
+assert(capnp.matchPowerboxQuery(emptyTag, tagStr1));
+assert(capnp.matchPowerboxQuery(emptyTag, tagStr2));
+assert(capnp.matchPowerboxQuery(emptyTag, tagStr3));
+
+// Note that string comparisons are actually list comparisons. But let's make sure an exact match
+// is required (which is not the case for list-of-structs).
+var tagStr4 = capnp.serialize(test.TestAllTypes, {textField: "oof"});
+assert(!capnp.matchPowerboxQuery(tagStr1, tagStr4));
+
+// Test list-of-structs.
+var tagFooBar = capnp.serialize(test.TestAllTypes,
+    {structList: [{textField: "foo"}, {textField: "bar"}]});
+var tagBarFoo = capnp.serialize(test.TestAllTypes,
+    {structList: [{textField: "bar"}, {textField: "foo"}]});
+var tagFooOnly = capnp.serialize(test.TestAllTypes,
+    {structList: [{textField: "foo"}]});
+var tagBarOnly = capnp.serialize(test.TestAllTypes,
+    {structList: [{textField: "bar"}]});
+var tagEmptyList = capnp.serialize(test.TestAllTypes,
+    {structList: []});
+
+assert(capnp.matchPowerboxQuery(tagFooBar, tagFooBar));
+assert(capnp.matchPowerboxQuery(tagFooBar, tagBarFoo));
+assert(capnp.matchPowerboxQuery(tagBarFoo, tagFooBar));
+assert(capnp.matchPowerboxQuery(tagFooOnly, tagFooBar));
+assert(capnp.matchPowerboxQuery(tagBarOnly, tagFooBar));
+assert(capnp.matchPowerboxQuery(tagFooOnly, tagBarFoo));
+assert(capnp.matchPowerboxQuery(tagBarOnly, tagBarFoo));
+assert(!capnp.matchPowerboxQuery(tagFooBar, tagFooOnly));
+assert(!capnp.matchPowerboxQuery(tagFooBar, tagBarOnly));
+assert(!capnp.matchPowerboxQuery(tagBarFoo, tagFooOnly));
+assert(!capnp.matchPowerboxQuery(tagBarFoo, tagBarOnly));
+
+assert(capnp.matchPowerboxQuery(tagFooBar, emptyTag));
+assert(capnp.matchPowerboxQuery(tagFooOnly, emptyTag));
+assert(capnp.matchPowerboxQuery(tagBarOnly, emptyTag));
+assert(capnp.matchPowerboxQuery(emptyTag, tagFooBar));
+assert(capnp.matchPowerboxQuery(emptyTag, tagFooOnly));
+assert(capnp.matchPowerboxQuery(emptyTag, tagBarOnly));
+
+assert(!capnp.matchPowerboxQuery(tagFooBar, tagEmptyList));
+assert(!capnp.matchPowerboxQuery(tagFooOnly, tagEmptyList));
+assert(!capnp.matchPowerboxQuery(tagBarOnly, tagEmptyList));
+assert(capnp.matchPowerboxQuery(tagEmptyList, tagFooBar));
+assert(capnp.matchPowerboxQuery(tagEmptyList, tagFooOnly));
+assert(capnp.matchPowerboxQuery(tagEmptyList, tagBarOnly));
+
+// Test list-of-pointers.
+var tagStrList1 = capnp.serialize(test.TestAllTypes, {textList: ["foo", "bar"]});
+var tagStrList2 = capnp.serialize(test.TestAllTypes, {textList: ["bar", "foo"]});
+var tagStrList3 = capnp.serialize(test.TestAllTypes, {textList: ["foo"]});
+var tagStrList4 = capnp.serialize(test.TestAllTypes, {textList: ["foo", null]});
+
+assert(capnp.matchPowerboxQuery(tagStrList1, tagStrList1));
+assert(capnp.matchPowerboxQuery(tagStrList2, tagStrList2));
+assert(!capnp.matchPowerboxQuery(tagStrList1, tagStrList2));
+assert(!capnp.matchPowerboxQuery(tagStrList2, tagStrList1));
+assert(!capnp.matchPowerboxQuery(tagStrList3, tagStrList1));
+assert(capnp.matchPowerboxQuery(tagStrList4, tagStrList1));
+
+console.log("matchPowerboxQuery: pass");
+
+}
+
+// =======================================================================================
+// Test RPC, if possible.
+
+if (!fs.existsSync("capnp-samples")) {
+  console.warn("skipping RPC because capnp-samples not present");
+  process.exit(0);
+}
 
 var Fiber = require("fibers");
 
@@ -110,7 +249,7 @@ child.stdio[1].once("readable", function() {
   doFiber(function() {
     var conn = capnp.connect("127.0.0.1:21311");
     var Calculator = capnp.import("capnp-samples/calculator.capnp").Calculator;
-    var calc = conn.restore("calculator", Calculator);
+    var calc = conn.restore(null, Calculator);
 
     var add = calc.getOperator("add").func;
     var subtract = calc.getOperator("subtract").func;
@@ -124,28 +263,48 @@ child.stdio[1].once("readable", function() {
       closed: false
     };
 
-    var localCap = new capnp.Capability(pow, Calculator.Function);
-    assert.equal(9, wait(localCap.call([3, 2])).value);
-    assert(!pow.closed);
-    localCap.close();
-    assert(pow.closed);
+    function usePow(pow) {
+      var localCap = new capnp.Capability(pow, Calculator.Function);
+      assert.equal(9, wait(localCap.call([3, 2])).value);
+      assert(!pow.closed);
+      localCap.close();
+      assert(pow.closed);
 
-    var promise = calc.evaluate(
-        {call: {"function": subtract, params: [
-            {call: {"function": add, params: [
-                {literal: 123}, {literal: 456}]}},
-            {literal: 321}]}});
+      var promise = calc.evaluate(
+          {call: {"function": subtract, params: [
+              {call: {"function": add, params: [
+                  {literal: 123}, {literal: 456}]}},
+              {literal: 321}]}});
 
-    var value = promise.value;
-    assert.equal(258, wait(value.read()).value);
-    value.close();
+      var value = promise.value;
+      assert.equal(258, wait(value.read()).value);
+      value.close();
 
-    pow.closed = false;
-    value = calc.evaluate(
-        {call: {"function": pow, params: [{literal: 2}, {literal: 4}]}}).value;
-    assert.equal(16, wait(value.read()).value);
-    assert(pow.closed);  // Not kept past return.
-    value.close();
+      pow.closed = false;
+      value = calc.evaluate(
+          {call: {"function": pow, params: [{literal: 2}, {literal: 4}]}}).value;
+      assert.equal(16, wait(value.read()).value);
+
+      // Wait a moment to give the capability a chance to be dropped.
+      wait(new Promise((resolve, reject) => setTimeout(resolve, 10)));
+      assert(pow.closed);
+      value.close();
+    }
+    usePow(pow);
+
+    // Try using a class.
+    class PowClass {
+      constructor() {
+        this.closed = false
+      }
+      call(params) {
+        return Math.pow(params[0], params[1]);
+      }
+      close() {
+        this.closed = true;
+      }
+    };
+    usePow(new PowClass());
 
     // Try wrapping a promise as a capability -- calls are queued until resolution.
     var resolvePromisedCalc;
@@ -177,12 +336,9 @@ child.stdio[1].once("readable", function() {
 
     add.close();
     subtract.close();
+    calc.close();
     conn.close();
 
     console.log("rpc: pass");
   }, child);
 });
-*/
-
-console.log("pass");
-

src/node-capnp/capnp.d.ts

@@ -0,0 +1,45 @@
+declare module Capnp {
+  type Id = string;
+
+  abstract class StructSchema<Builder, Reader> {
+    // A schema for a struct type. The `Builder` parameter is what users of
+    // the library specify in order to create a value; it may be missing fields,
+    // which will be filled in with defaults. A `Reader` is what is is returned
+    // when parsing a value, and is guaranteed to have all known fields set.
+
+    typeId: Id;
+  }
+
+  abstract class InterfaceSchema<Server, Client> {
+    // A schema for an interface type. Similarly to `StructSchema`, the `Server`
+    // and `Client` parameters represent objects which may have missing
+    // methods (for servers), and ones which do not (for clients, though calling
+    // the method may still throw unimplemented).
+
+    typeId: Id;
+  }
+
+  interface AnyServer {
+    close?: () => void;
+  }
+
+  interface AnyClient {
+    close(): void;
+    closed: boolean;
+    castAs<Server, Client>(schema: InterfaceSchema<Server, Client>): Client;
+  }
+
+  const Capability: {
+    new<Server, Client>(server: Server, schema: InterfaceSchema<Server, Client>): Client;
+  }
+
+  abstract class Connection {
+    restore<Server, Client>(exportName: string, type: InterfaceSchema<Server, Client>): Client;
+    close(): void;
+  }
+
+  function parse<Builder, Reader>(type: StructSchema<Builder, Reader>, buffer: Buffer): Reader;
+  function serialize<Builder, Reader>(type: StructSchema<Builder, Reader>, builder: Builder): Buffer;
+  function connect(addr: string): Connection;
+}
+export default Capnp;

src/node-capnp/capnp.js

@@ -40,12 +40,11 @@ try {
   } catch (ex) {
     // Give up.
     throw new Error(
-        "`" + modPath+ ".node` is missing. Try reinstalling `node-capnp`?");
+        "`capnp.node` is missing. Try reinstalling `node-capnp`?");
   }
 }
 
 var v8capnp = require(modPath);
-var Promise = require("es6-promise").Promise;
 
 var importPath = [];
 for (var i in module.paths) {
@@ -100,7 +99,7 @@ function closeAll(obj) {
     var member = obj[name];
     if (member instanceof Capability) {
       member.close();
-    } else {
+    } else if (typeof member === "object") {
       closeAll(member);
     }
   }
@@ -167,9 +166,13 @@ function makeMethod(cap, method) {
 
 function wrapLocalMethod(self, method) {
   return function (request) {
-    var params = v8capnp.toJsParams(request, Capability);
-    v8capnp.releaseParams(request);
-    Promise.resolve(method.apply(self, params)).then(function (results) {
+    // We start with Promise.resolve().then(...) so that any exceptions thrown immediately
+    // propagate through the promise chain.
+    Promise.resolve().then(function () {
+      var params = v8capnp.toJsParams(request, Capability);
+      v8capnp.releaseParams(request);
+      return method.apply(self, params);
+    }).then(function (results) {
       if (typeof results !== "object") {
         if (results === undefined) {
           results = [];
@@ -189,16 +192,20 @@ function wrapLocalMethod(self, method) {
 }
 
 function LocalCapWrapper(obj) {
-  for (var name in obj) {
-    if (name === "close") {
-      // Not an RPC method. Called when the capability has no clients.
-      this.close = obj.close.bind(obj);
-    } else {
-      var method = obj[name];
-      if (typeof method === "function") {
-        this[name] = wrapLocalMethod(obj, method);
+  var type = obj;
+  while (type && type !== Object.prototype) {
+    Object.getOwnPropertyNames(type).forEach(name => {
+      if (name === "close") {
+        // Not an RPC method. Called when the capability has no clients.
+        this.close = obj.close.bind(obj);
+      } else {
+        var method = obj[name];
+        if (typeof method === "function") {
+          this[name] = wrapLocalMethod(obj, method);
+        }
       }
-    }
+    })
+    type = Object.getPrototypeOf(type);
   }
 }
 
@@ -253,26 +260,45 @@ exports.connect = function (addr, bootstrapCap) {
   if (bootstrapCap && !v8capnp.isCap(bootstrapCap)) {
     throw new Error("Invalid bootstrap capability.");
   }
-  return new Connection(v8capnp.connect(addr, bootstrapCap));
+
+  if (addr.capabilityStreamFd) {
+    return new Connection(v8capnp.connectUnixFd(addr.capabilityStreamFd, bootstrapCap));
+  } else {
+    return new Connection(v8capnp.connect(addr, bootstrapCap));
+  }
 }
 
-exports.parse = function (schema, buffer) {
-  var reader = v8capnp.fromBytes(buffer, schema);
+exports.expectedSizeFromPrefix = v8capnp.expectedSizeFromPrefix;
+
+exports.parse = function (schema, buffer, options) {
+  var reader = v8capnp.fromBytes(buffer, schema, options || {});
   return v8capnp.toJs(reader, Capability);
 }
 
-exports.serialize = function (schema, value) {
+exports.parsePacked = function (schema, buffer) {
+  // TODO(cleanup): Remove in favor of options.
+  return exports.parse(schema, buffer, {packed: true});
+}
+
+exports.serialize = function (schema, value, options) {
   var builder = v8capnp.newBuilder(schema);
   v8capnp.fromJs(builder, value, LocalCapWrapper);
-  return v8capnp.toBytes(builder);
+  return v8capnp.toBytes(builder, options || {});
+}
+
+exports.serializePacked = function (schema, value) {
+  // TODO(cleanup): Remove in favor of options.
+  return exports.serialize(schema, value, {packed: true});
 }
 
 exports.Capability = Capability;
 
-exports.bytesToPreorder = function(schema, buf) {
+exports.bytesToPreorder = function(schema, buf, options) {
   // Parse, copy, serialize, to get a preorder traversal.
-  var reader = v8capnp.fromBytes(buf, schema);
+  var reader = v8capnp.fromBytes(buf, schema, options || {});
   var builder = v8capnp.copyBuilder(reader);
-  return v8capnp.toBytes(builder);
+  return v8capnp.toBytes(builder, options || {});
 }
 
+if (v8capnp.matchPowerboxQuery) exports.matchPowerboxQuery = v8capnp.matchPowerboxQuery;
+if (v8capnp.chacha20) exports.chacha20 = v8capnp.chacha20;

src/node-capnp/download-es6-promise.ekam-rule

@@ -1,32 +0,0 @@
-#! /bin/sh
-# Copyright (c) 2014 Sandstorm Development Group, Inc. and contributors
-# Licensed under the MIT License:
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-
-set -eu
-
-echo newOutput node-capnp/es6-promise.js
-read OUTPUT
-
-curl -s https://es6-promises.s3.amazonaws.com/es6-promise-2.0.1.min.js > "$OUTPUT"
-
-echo "4f423e916c1ced14fc56c83478bd1ff17000f32ea399fda24fd131989265719c $OUTPUT" | sha256sum --quiet --strict -c - >&2
-
-echo $OUTPUT >&2

src/node-capnp/node-capnp.ekam-manifest

@@ -1,3 +1,2 @@
 capnp.node node_modules
 capnp.js node_modules
-es6-promise.js node_modules

stream.capnp.js

@@ -0,0 +1 @@
+module.exports = require("capnp").importSystem("capnp/stream.capnp");