Replace protobufs with flatbuffers

7 files changed, 211 insertions, 1483 deletions

diff --git a/js/flatbufferjs_hack.py b/js/flatbufferjs_hack.py
new file mode 100755
index 000000000..2f411c1db
--- /dev/null
+++ b/js/flatbufferjs_hack.py
@@ -0,0 +1,33 @@
+#!/usr/bin/env python
+"""
+gn can only run python scripts.
+
+Generates flatbuffer TypeScript code.
+"""
+import subprocess
+import sys
+import os
+import shutil
+
+# TODO(ry) Ideally flatc output files should be written into target_gen_dir, but
+# its difficult to get this working in a way that parcel can resolve their
+# location. (Parcel does not support NODE_PATH.) Therefore this hack: write the
+# generated msg_generated.ts outputs into the js/ folder, and we check them into
+# the repo. Hopefully this hack can be removed at some point. If msg.fps is
+# changed, commit changes to the generated JS file.
+
+src = sys.argv[1]
+dst = sys.argv[2]
+stamp_file = sys.argv[3]
+
+shutil.copyfile(src, dst)
+
+
+def touch(fname):
+    if os.path.exists(fname):
+        os.utime(fname, None)
+    else:
+        open(fname, 'a').close()
+
+
+touch(stamp_file)
diff --git a/js/main.ts b/js/main.ts
index ae98ad5d4..3613f3c89 100644
--- a/js/main.ts
+++ b/js/main.ts
@@ -1,7 +1,9 @@
 // tslint:disable-next-line:no-reference
 /// <reference path="deno.d.ts" />
 import * as ts from "typescript";
-import { deno as pb } from "./msg.pb";
+
+import { flatbuffers } from "flatbuffers";
+import { deno as fbs } from "./msg_generated";
 
 const globalEval = eval;
 const window = globalEval("this");
@@ -11,22 +13,20 @@ window["denoMain"] = () => {
   const res = deno.send("startDeno2", emptyArrayBuffer());
   // deno.print(`after`);
   const resUi8 = new Uint8Array(res);
-  deno.print(`before`);
-  const msg = pb.Msg.decode(resUi8);
-  deno.print(`after`);
-  const {
-    startCwd: cwd,
-    startArgv: argv,
-    startDebugFlag: debugFlag,
-    startMainJs: mainJs,
-    startMainMap: mainMap
-  } = msg;
 
+  const bb = new flatbuffers.ByteBuffer(resUi8);
+  const msg = fbs.Msg.getRootAsMsg(bb);
+
+  // startDebugFlag: debugFlag,
+  // startMainJs: mainJs,
+  // startMainMap: mainMap
+  const cwd = msg.startCwd();
   deno.print(`cwd: ${cwd}`);
-  deno.print(`debugFlag: ${debugFlag}`);
 
-  for (let i = 0; i < argv.length; i++) {
-    deno.print(`argv[${i}] ${argv[i]}`);
+  const argv: string[] = [];
+  for (let i = 0; i < msg.startArgvLength(); i++) {
+    const arg = msg.startArgv(i);
+    deno.print(`argv[${i}] ${arg}`);
   }
 };
 
diff --git a/js/msg.pb.d.ts b/js/msg.pb.d.ts
deleted file mode 100644
index 081e2abf1..000000000
--- a/js/msg.pb.d.ts
+++ /dev/null
@@ -1,314 +0,0 @@
-import * as $protobuf from "protobufjs";
-
-/** Namespace deno. */
-export namespace deno {
-
-    /** Properties of a Msg. */
-    interface IMsg {
-
-        /** Msg command */
-        command?: (deno.Msg.Command|null);
-
-        /** Msg error */
-        error?: (string|null);
-
-        /** Msg startCwd */
-        startCwd?: (string|null);
-
-        /** Msg startArgv */
-        startArgv?: (string[]|null);
-
-        /** Msg startDebugFlag */
-        startDebugFlag?: (boolean|null);
-
-        /** Msg startMainJs */
-        startMainJs?: (string|null);
-
-        /** Msg startMainMap */
-        startMainMap?: (string|null);
-
-        /** Msg codeFetchModuleSpecifier */
-        codeFetchModuleSpecifier?: (string|null);
-
-        /** Msg codeFetchContainingFile */
-        codeFetchContainingFile?: (string|null);
-
-        /** Msg codeFetchResModuleName */
-        codeFetchResModuleName?: (string|null);
-
-        /** Msg codeFetchResFilename */
-        codeFetchResFilename?: (string|null);
-
-        /** Msg codeFetchResSourceCode */
-        codeFetchResSourceCode?: (string|null);
-
-        /** Msg codeFetchResOutputCode */
-        codeFetchResOutputCode?: (string|null);
-
-        /** Msg codeCacheFilename */
-        codeCacheFilename?: (string|null);
-
-        /** Msg codeCacheSourceCode */
-        codeCacheSourceCode?: (string|null);
-
-        /** Msg codeCacheOutputCode */
-        codeCacheOutputCode?: (string|null);
-
-        /** Msg exitCode */
-        exitCode?: (number|null);
-
-        /** Msg timerStartId */
-        timerStartId?: (number|null);
-
-        /** Msg timerStartInterval */
-        timerStartInterval?: (boolean|null);
-
-        /** Msg timerStartDelay */
-        timerStartDelay?: (number|null);
-
-        /** Msg timerReadyId */
-        timerReadyId?: (number|null);
-
-        /** Msg timerReadyDone */
-        timerReadyDone?: (boolean|null);
-
-        /** Msg timerClearId */
-        timerClearId?: (number|null);
-
-        /** Msg fetchReqId */
-        fetchReqId?: (number|null);
-
-        /** Msg fetchReqUrl */
-        fetchReqUrl?: (string|null);
-
-        /** Msg fetchResId */
-        fetchResId?: (number|null);
-
-        /** Msg fetchResStatus */
-        fetchResStatus?: (number|null);
-
-        /** Msg fetchResHeaderLine */
-        fetchResHeaderLine?: (string[]|null);
-
-        /** Msg fetchResBody */
-        fetchResBody?: (Uint8Array|null);
-
-        /** Msg readFileSyncFilename */
-        readFileSyncFilename?: (string|null);
-
-        /** Msg readFileSyncData */
-        readFileSyncData?: (Uint8Array|null);
-
-        /** Msg writeFileSyncFilename */
-        writeFileSyncFilename?: (string|null);
-
-        /** Msg writeFileSyncData */
-        writeFileSyncData?: (Uint8Array|null);
-
-        /** Msg writeFileSyncPerm */
-        writeFileSyncPerm?: (number|null);
-    }
-
-    /** Represents a Msg. */
-    class Msg implements IMsg {
-
-        /**
-         * Constructs a new Msg.
-         * @param [properties] Properties to set
-         */
-        constructor(properties?: deno.IMsg);
-
-        /** Msg command. */
-        public command: deno.Msg.Command;
-
-        /** Msg error. */
-        public error: string;
-
-        /** Msg startCwd. */
-        public startCwd: string;
-
-        /** Msg startArgv. */
-        public startArgv: string[];
-
-        /** Msg startDebugFlag. */
-        public startDebugFlag: boolean;
-
-        /** Msg startMainJs. */
-        public startMainJs: string;
-
-        /** Msg startMainMap. */
-        public startMainMap: string;
-
-        /** Msg codeFetchModuleSpecifier. */
-        public codeFetchModuleSpecifier: string;
-
-        /** Msg codeFetchContainingFile. */
-        public codeFetchContainingFile: string;
-
-        /** Msg codeFetchResModuleName. */
-        public codeFetchResModuleName: string;
-
-        /** Msg codeFetchResFilename. */
-        public codeFetchResFilename: string;
-
-        /** Msg codeFetchResSourceCode. */
-        public codeFetchResSourceCode: string;
-
-        /** Msg codeFetchResOutputCode. */
-        public codeFetchResOutputCode: string;
-
-        /** Msg codeCacheFilename. */
-        public codeCacheFilename: string;
-
-        /** Msg codeCacheSourceCode. */
-        public codeCacheSourceCode: string;
-
-        /** Msg codeCacheOutputCode. */
-        public codeCacheOutputCode: string;
-
-        /** Msg exitCode. */
-        public exitCode: number;
-
-        /** Msg timerStartId. */
-        public timerStartId: number;
-
-        /** Msg timerStartInterval. */
-        public timerStartInterval: boolean;
-
-        /** Msg timerStartDelay. */
-        public timerStartDelay: number;
-
-        /** Msg timerReadyId. */
-        public timerReadyId: number;
-
-        /** Msg timerReadyDone. */
-        public timerReadyDone: boolean;
-
-        /** Msg timerClearId. */
-        public timerClearId: number;
-
-        /** Msg fetchReqId. */
-        public fetchReqId: number;
-
-        /** Msg fetchReqUrl. */
-        public fetchReqUrl: string;
-
-        /** Msg fetchResId. */
-        public fetchResId: number;
-
-        /** Msg fetchResStatus. */
-        public fetchResStatus: number;
-
-        /** Msg fetchResHeaderLine. */
-        public fetchResHeaderLine: string[];
-
-        /** Msg fetchResBody. */
-        public fetchResBody: Uint8Array;
-
-        /** Msg readFileSyncFilename. */
-        public readFileSyncFilename: string;
-
-        /** Msg readFileSyncData. */
-        public readFileSyncData: Uint8Array;
-
-        /** Msg writeFileSyncFilename. */
-        public writeFileSyncFilename: string;
-
-        /** Msg writeFileSyncData. */
-        public writeFileSyncData: Uint8Array;
-
-        /** Msg writeFileSyncPerm. */
-        public writeFileSyncPerm: number;
-
-        /**
-         * Creates a new Msg instance using the specified properties.
-         * @param [properties] Properties to set
-         * @returns Msg instance
-         */
-        public static create(properties?: deno.IMsg): deno.Msg;
-
-        /**
-         * Encodes the specified Msg message. Does not implicitly {@link deno.Msg.verify|verify} messages.
-         * @param message Msg message or plain object to encode
-         * @param [writer] Writer to encode to
-         * @returns Writer
-         */
-        public static encode(message: deno.IMsg, writer?: $protobuf.Writer): $protobuf.Writer;
-
-        /**
-         * Encodes the specified Msg message, length delimited. Does not implicitly {@link deno.Msg.verify|verify} messages.
-         * @param message Msg message or plain object to encode
-         * @param [writer] Writer to encode to
-         * @returns Writer
-         */
-        public static encodeDelimited(message: deno.IMsg, writer?: $protobuf.Writer): $protobuf.Writer;
-
-        /**
-         * Decodes a Msg message from the specified reader or buffer.
-         * @param reader Reader or buffer to decode from
-         * @param [length] Message length if known beforehand
-         * @returns Msg
-         * @throws {Error} If the payload is not a reader or valid buffer
-         * @throws {$protobuf.util.ProtocolError} If required fields are missing
-         */
-        public static decode(reader: ($protobuf.Reader|Uint8Array), length?: number): deno.Msg;
-
-        /**
-         * Decodes a Msg message from the specified reader or buffer, length delimited.
-         * @param reader Reader or buffer to decode from
-         * @returns Msg
-         * @throws {Error} If the payload is not a reader or valid buffer
-         * @throws {$protobuf.util.ProtocolError} If required fields are missing
-         */
-        public static decodeDelimited(reader: ($protobuf.Reader|Uint8Array)): deno.Msg;
-
-        /**
-         * Verifies a Msg message.
-         * @param message Plain object to verify
-         * @returns `null` if valid, otherwise the reason why it is not
-         */
-        public static verify(message: { [k: string]: any }): (string|null);
-
-        /**
-         * Creates a Msg message from a plain object. Also converts values to their respective internal types.
-         * @param object Plain object
-         * @returns Msg
-         */
-        public static fromObject(object: { [k: string]: any }): deno.Msg;
-
-        /**
-         * Creates a plain object from a Msg message. Also converts values to other types if specified.
-         * @param message Msg
-         * @param [options] Conversion options
-         * @returns Plain object
-         */
-        public static toObject(message: deno.Msg, options?: $protobuf.IConversionOptions): { [k: string]: any };
-
-        /**
-         * Converts this Msg to JSON.
-         * @returns JSON object
-         */
-        public toJSON(): { [k: string]: any };
-    }
-
-    namespace Msg {
-
-        /** Command enum. */
-        enum Command {
-            ERROR = 0,
-            START = 1,
-            CODE_FETCH = 2,
-            CODE_FETCH_RES = 3,
-            CODE_CACHE = 4,
-            EXIT = 5,
-            TIMER_START = 6,
-            TIMER_READY = 7,
-            TIMER_CLEAR = 8,
-            FETCH_REQ = 9,
-            FETCH_RES = 10,
-            READ_FILE_SYNC = 11,
-            READ_FILE_SYNC_RES = 12,
-            WRITE_FILE_SYNC = 13
-        }
-    }
-}
diff --git a/js/msg.pb.js b/js/msg.pb.js
deleted file mode 100644
index 7ac7fbbcc..000000000
--- a/js/msg.pb.js
+++ /dev/null
@@ -1,1100 +0,0 @@
-/*eslint-disable block-scoped-var, no-redeclare, no-control-regex, no-prototype-builtins*/
-(function(global, factory) { /* global define, require, module */
-
-    /* AMD */ if (typeof define === 'function' && define.amd)
-        define(["protobufjs/minimal"], factory);
-
-    /* CommonJS */ else if (typeof require === 'function' && typeof module === 'object' && module && module.exports)
-        module.exports = factory(require("protobufjs/minimal"));
-
-})(this, function($protobuf) {
-    "use strict";
-
-    // Common aliases
-    var $Reader = $protobuf.Reader, $Writer = $protobuf.Writer, $util = $protobuf.util;
-    
-    // Exported root namespace
-    var $root = $protobuf.roots["default"] || ($protobuf.roots["default"] = {});
-    
-    $root.deno = (function() {
-    
-        /**
-         * Namespace deno.
-         * @exports deno
-         * @namespace
-         */
-        var deno = {};
-    
-        deno.Msg = (function() {
-    
-            /**
-             * Properties of a Msg.
-             * @memberof deno
-             * @interface IMsg
-             * @property {deno.Msg.Command|null} [command] Msg command
-             * @property {string|null} [error] Msg error
-             * @property {string|null} [startCwd] Msg startCwd
-             * @property {Array.<string>|null} [startArgv] Msg startArgv
-             * @property {boolean|null} [startDebugFlag] Msg startDebugFlag
-             * @property {string|null} [startMainJs] Msg startMainJs
-             * @property {string|null} [startMainMap] Msg startMainMap
-             * @property {string|null} [codeFetchModuleSpecifier] Msg codeFetchModuleSpecifier
-             * @property {string|null} [codeFetchContainingFile] Msg codeFetchContainingFile
-             * @property {string|null} [codeFetchResModuleName] Msg codeFetchResModuleName
-             * @property {string|null} [codeFetchResFilename] Msg codeFetchResFilename
-             * @property {string|null} [codeFetchResSourceCode] Msg codeFetchResSourceCode
-             * @property {string|null} [codeFetchResOutputCode] Msg codeFetchResOutputCode
-             * @property {string|null} [codeCacheFilename] Msg codeCacheFilename
-             * @property {string|null} [codeCacheSourceCode] Msg codeCacheSourceCode
-             * @property {string|null} [codeCacheOutputCode] Msg codeCacheOutputCode
-             * @property {number|null} [exitCode] Msg exitCode
-             * @property {number|null} [timerStartId] Msg timerStartId
-             * @property {boolean|null} [timerStartInterval] Msg timerStartInterval
-             * @property {number|null} [timerStartDelay] Msg timerStartDelay
-             * @property {number|null} [timerReadyId] Msg timerReadyId
-             * @property {boolean|null} [timerReadyDone] Msg timerReadyDone
-             * @property {number|null} [timerClearId] Msg timerClearId
-             * @property {number|null} [fetchReqId] Msg fetchReqId
-             * @property {string|null} [fetchReqUrl] Msg fetchReqUrl
-             * @property {number|null} [fetchResId] Msg fetchResId
-             * @property {number|null} [fetchResStatus] Msg fetchResStatus
-             * @property {Array.<string>|null} [fetchResHeaderLine] Msg fetchResHeaderLine
-             * @property {Uint8Array|null} [fetchResBody] Msg fetchResBody
-             * @property {string|null} [readFileSyncFilename] Msg readFileSyncFilename
-             * @property {Uint8Array|null} [readFileSyncData] Msg readFileSyncData
-             * @property {string|null} [writeFileSyncFilename] Msg writeFileSyncFilename
-             * @property {Uint8Array|null} [writeFileSyncData] Msg writeFileSyncData
-             * @property {number|null} [writeFileSyncPerm] Msg writeFileSyncPerm
-             */
-    
-            /**
-             * Constructs a new Msg.
-             * @memberof deno
-             * @classdesc Represents a Msg.
-             * @implements IMsg
-             * @constructor
-             * @param {deno.IMsg=} [properties] Properties to set
-             */
-            function Msg(properties) {
-                this.startArgv = [];
-                this.fetchResHeaderLine = [];
-                if (properties)
-                    for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
-                        if (properties[keys[i]] != null)
-                            this[keys[i]] = properties[keys[i]];
-            }
-    
-            /**
-             * Msg command.
-             * @member {deno.Msg.Command} command
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.command = 0;
-    
-            /**
-             * Msg error.
-             * @member {string} error
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.error = "";
-    
-            /**
-             * Msg startCwd.
-             * @member {string} startCwd
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.startCwd = "";
-    
-            /**
-             * Msg startArgv.
-             * @member {Array.<string>} startArgv
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.startArgv = $util.emptyArray;
-    
-            /**
-             * Msg startDebugFlag.
-             * @member {boolean} startDebugFlag
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.startDebugFlag = false;
-    
-            /**
-             * Msg startMainJs.
-             * @member {string} startMainJs
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.startMainJs = "";
-    
-            /**
-             * Msg startMainMap.
-             * @member {string} startMainMap
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.startMainMap = "";
-    
-            /**
-             * Msg codeFetchModuleSpecifier.
-             * @member {string} codeFetchModuleSpecifier
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.codeFetchModuleSpecifier = "";
-    
-            /**
-             * Msg codeFetchContainingFile.
-             * @member {string} codeFetchContainingFile
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.codeFetchContainingFile = "";
-    
-            /**
-             * Msg codeFetchResModuleName.
-             * @member {string} codeFetchResModuleName
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.codeFetchResModuleName = "";
-    
-            /**
-             * Msg codeFetchResFilename.
-             * @member {string} codeFetchResFilename
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.codeFetchResFilename = "";
-    
-            /**
-             * Msg codeFetchResSourceCode.
-             * @member {string} codeFetchResSourceCode
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.codeFetchResSourceCode = "";
-    
-            /**
-             * Msg codeFetchResOutputCode.
-             * @member {string} codeFetchResOutputCode
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.codeFetchResOutputCode = "";
-    
-            /**
-             * Msg codeCacheFilename.
-             * @member {string} codeCacheFilename
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.codeCacheFilename = "";
-    
-            /**
-             * Msg codeCacheSourceCode.
-             * @member {string} codeCacheSourceCode
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.codeCacheSourceCode = "";
-    
-            /**
-             * Msg codeCacheOutputCode.
-             * @member {string} codeCacheOutputCode
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.codeCacheOutputCode = "";
-    
-            /**
-             * Msg exitCode.
-             * @member {number} exitCode
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.exitCode = 0;
-    
-            /**
-             * Msg timerStartId.
-             * @member {number} timerStartId
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.timerStartId = 0;
-    
-            /**
-             * Msg timerStartInterval.
-             * @member {boolean} timerStartInterval
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.timerStartInterval = false;
-    
-            /**
-             * Msg timerStartDelay.
-             * @member {number} timerStartDelay
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.timerStartDelay = 0;
-    
-            /**
-             * Msg timerReadyId.
-             * @member {number} timerReadyId
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.timerReadyId = 0;
-    
-            /**
-             * Msg timerReadyDone.
-             * @member {boolean} timerReadyDone
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.timerReadyDone = false;
-    
-            /**
-             * Msg timerClearId.
-             * @member {number} timerClearId
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.timerClearId = 0;
-    
-            /**
-             * Msg fetchReqId.
-             * @member {number} fetchReqId
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.fetchReqId = 0;
-    
-            /**
-             * Msg fetchReqUrl.
-             * @member {string} fetchReqUrl
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.fetchReqUrl = "";
-    
-            /**
-             * Msg fetchResId.
-             * @member {number} fetchResId
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.fetchResId = 0;
-    
-            /**
-             * Msg fetchResStatus.
-             * @member {number} fetchResStatus
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.fetchResStatus = 0;
-    
-            /**
-             * Msg fetchResHeaderLine.
-             * @member {Array.<string>} fetchResHeaderLine
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.fetchResHeaderLine = $util.emptyArray;
-    
-            /**
-             * Msg fetchResBody.
-             * @member {Uint8Array} fetchResBody
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.fetchResBody = $util.newBuffer([]);
-    
-            /**
-             * Msg readFileSyncFilename.
-             * @member {string} readFileSyncFilename
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.readFileSyncFilename = "";
-    
-            /**
-             * Msg readFileSyncData.
-             * @member {Uint8Array} readFileSyncData
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.readFileSyncData = $util.newBuffer([]);
-    
-            /**
-             * Msg writeFileSyncFilename.
-             * @member {string} writeFileSyncFilename
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.writeFileSyncFilename = "";
-    
-            /**
-             * Msg writeFileSyncData.
-             * @member {Uint8Array} writeFileSyncData
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.writeFileSyncData = $util.newBuffer([]);
-    
-            /**
-             * Msg writeFileSyncPerm.
-             * @member {number} writeFileSyncPerm
-             * @memberof deno.Msg
-             * @instance
-             */
-            Msg.prototype.writeFileSyncPerm = 0;
-    
-            /**
-             * Creates a new Msg instance using the specified properties.
-             * @function create
-             * @memberof deno.Msg
-             * @static
-             * @param {deno.IMsg=} [properties] Properties to set
-             * @returns {deno.Msg} Msg instance
-             */
-            Msg.create = function create(properties) {
-                return new Msg(properties);
-            };
-    
-            /**
-             * Encodes the specified Msg message. Does not implicitly {@link deno.Msg.verify|verify} messages.
-             * @function encode
-             * @memberof deno.Msg
-             * @static
-             * @param {deno.IMsg} message Msg message or plain object to encode
-             * @param {$protobuf.Writer} [writer] Writer to encode to
-             * @returns {$protobuf.Writer} Writer
-             */
-            Msg.encode = function encode(message, writer) {
-                if (!writer)
-                    writer = $Writer.create();
-                if (message.command != null && message.hasOwnProperty("command"))
-                    writer.uint32(/* id 1, wireType 0 =*/8).int32(message.command);
-                if (message.error != null && message.hasOwnProperty("error"))
-                    writer.uint32(/* id 2, wireType 2 =*/18).string(message.error);
-                if (message.startCwd != null && message.hasOwnProperty("startCwd"))
-                    writer.uint32(/* id 10, wireType 2 =*/82).string(message.startCwd);
-                if (message.startArgv != null && message.startArgv.length)
-                    for (var i = 0; i < message.startArgv.length; ++i)
-                        writer.uint32(/* id 11, wireType 2 =*/90).string(message.startArgv[i]);
-                if (message.startDebugFlag != null && message.hasOwnProperty("startDebugFlag"))
-                    writer.uint32(/* id 12, wireType 0 =*/96).bool(message.startDebugFlag);
-                if (message.startMainJs != null && message.hasOwnProperty("startMainJs"))
-                    writer.uint32(/* id 13, wireType 2 =*/106).string(message.startMainJs);
-                if (message.startMainMap != null && message.hasOwnProperty("startMainMap"))
-                    writer.uint32(/* id 14, wireType 2 =*/114).string(message.startMainMap);
-                if (message.codeFetchModuleSpecifier != null && message.hasOwnProperty("codeFetchModuleSpecifier"))
-                    writer.uint32(/* id 20, wireType 2 =*/162).string(message.codeFetchModuleSpecifier);
-                if (message.codeFetchContainingFile != null && message.hasOwnProperty("codeFetchContainingFile"))
-                    writer.uint32(/* id 21, wireType 2 =*/170).string(message.codeFetchContainingFile);
-                if (message.codeFetchResModuleName != null && message.hasOwnProperty("codeFetchResModuleName"))
-                    writer.uint32(/* id 30, wireType 2 =*/242).string(message.codeFetchResModuleName);
-                if (message.codeFetchResFilename != null && message.hasOwnProperty("codeFetchResFilename"))
-                    writer.uint32(/* id 31, wireType 2 =*/250).string(message.codeFetchResFilename);
-                if (message.codeFetchResSourceCode != null && message.hasOwnProperty("codeFetchResSourceCode"))
-                    writer.uint32(/* id 32, wireType 2 =*/258).string(message.codeFetchResSourceCode);
-                if (message.codeFetchResOutputCode != null && message.hasOwnProperty("codeFetchResOutputCode"))
-                    writer.uint32(/* id 33, wireType 2 =*/266).string(message.codeFetchResOutputCode);
-                if (message.codeCacheFilename != null && message.hasOwnProperty("codeCacheFilename"))
-                    writer.uint32(/* id 41, wireType 2 =*/330).string(message.codeCacheFilename);
-                if (message.codeCacheSourceCode != null && message.hasOwnProperty("codeCacheSourceCode"))
-                    writer.uint32(/* id 42, wireType 2 =*/338).string(message.codeCacheSourceCode);
-                if (message.codeCacheOutputCode != null && message.hasOwnProperty("codeCacheOutputCode"))
-                    writer.uint32(/* id 43, wireType 2 =*/346).string(message.codeCacheOutputCode);
-                if (message.exitCode != null && message.hasOwnProperty("exitCode"))
-                    writer.uint32(/* id 50, wireType 0 =*/400).int32(message.exitCode);
-                if (message.timerStartId != null && message.hasOwnProperty("timerStartId"))
-                    writer.uint32(/* id 60, wireType 0 =*/480).int32(message.timerStartId);
-                if (message.timerStartInterval != null && message.hasOwnProperty("timerStartInterval"))
-                    writer.uint32(/* id 61, wireType 0 =*/488).bool(message.timerStartInterval);
-                if (message.timerStartDelay != null && message.hasOwnProperty("timerStartDelay"))
-                    writer.uint32(/* id 62, wireType 0 =*/496).int32(message.timerStartDelay);
-                if (message.timerReadyId != null && message.hasOwnProperty("timerReadyId"))
-                    writer.uint32(/* id 70, wireType 0 =*/560).int32(message.timerReadyId);
-                if (message.timerReadyDone != null && message.hasOwnProperty("timerReadyDone"))
-                    writer.uint32(/* id 71, wireType 0 =*/568).bool(message.timerReadyDone);
-                if (message.timerClearId != null && message.hasOwnProperty("timerClearId"))
-                    writer.uint32(/* id 80, wireType 0 =*/640).int32(message.timerClearId);
-                if (message.fetchReqId != null && message.hasOwnProperty("fetchReqId"))
-                    writer.uint32(/* id 90, wireType 0 =*/720).int32(message.fetchReqId);
-                if (message.fetchReqUrl != null && message.hasOwnProperty("fetchReqUrl"))
-                    writer.uint32(/* id 91, wireType 2 =*/730).string(message.fetchReqUrl);
-                if (message.fetchResId != null && message.hasOwnProperty("fetchResId"))
-                    writer.uint32(/* id 100, wireType 0 =*/800).int32(message.fetchResId);
-                if (message.fetchResStatus != null && message.hasOwnProperty("fetchResStatus"))
-                    writer.uint32(/* id 101, wireType 0 =*/808).int32(message.fetchResStatus);
-                if (message.fetchResHeaderLine != null && message.fetchResHeaderLine.length)
-                    for (var i = 0; i < message.fetchResHeaderLine.length; ++i)
-                        writer.uint32(/* id 102, wireType 2 =*/818).string(message.fetchResHeaderLine[i]);
-                if (message.fetchResBody != null && message.hasOwnProperty("fetchResBody"))
-                    writer.uint32(/* id 103, wireType 2 =*/826).bytes(message.fetchResBody);
-                if (message.readFileSyncFilename != null && message.hasOwnProperty("readFileSyncFilename"))
-                    writer.uint32(/* id 110, wireType 2 =*/882).string(message.readFileSyncFilename);
-                if (message.readFileSyncData != null && message.hasOwnProperty("readFileSyncData"))
-                    writer.uint32(/* id 120, wireType 2 =*/962).bytes(message.readFileSyncData);
-                if (message.writeFileSyncFilename != null && message.hasOwnProperty("writeFileSyncFilename"))
-                    writer.uint32(/* id 130, wireType 2 =*/1042).string(message.writeFileSyncFilename);
-                if (message.writeFileSyncData != null && message.hasOwnProperty("writeFileSyncData"))
-                    writer.uint32(/* id 131, wireType 2 =*/1050).bytes(message.writeFileSyncData);
-                if (message.writeFileSyncPerm != null && message.hasOwnProperty("writeFileSyncPerm"))
-                    writer.uint32(/* id 132, wireType 0 =*/1056).uint32(message.writeFileSyncPerm);
-                return writer;
-            };
-    
-            /**
-             * Encodes the specified Msg message, length delimited. Does not implicitly {@link deno.Msg.verify|verify} messages.
-             * @function encodeDelimited
-             * @memberof deno.Msg
-             * @static
-             * @param {deno.IMsg} message Msg message or plain object to encode
-             * @param {$protobuf.Writer} [writer] Writer to encode to
-             * @returns {$protobuf.Writer} Writer
-             */
-            Msg.encodeDelimited = function encodeDelimited(message, writer) {
-                return this.encode(message, writer).ldelim();
-            };
-    
-            /**
-             * Decodes a Msg message from the specified reader or buffer.
-             * @function decode
-             * @memberof deno.Msg
-             * @static
-             * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
-             * @param {number} [length] Message length if known beforehand
-             * @returns {deno.Msg} Msg
-             * @throws {Error} If the payload is not a reader or valid buffer
-             * @throws {$protobuf.util.ProtocolError} If required fields are missing
-             */
-            Msg.decode = function decode(reader, length) {
-                if (!(reader instanceof $Reader))
-                    reader = $Reader.create(reader);
-                var end = length === undefined ? reader.len : reader.pos + length, message = new $root.deno.Msg();
-                while (reader.pos < end) {
-                    var tag = reader.uint32();
-                    switch (tag >>> 3) {
-                    case 1:
-                        message.command = reader.int32();
-                        break;
-                    case 2:
-                        message.error = reader.string();
-                        break;
-                    case 10:
-                        message.startCwd = reader.string();
-                        break;
-                    case 11:
-                        if (!(message.startArgv && message.startArgv.length))
-                            message.startArgv = [];
-                        message.startArgv.push(reader.string());
-                        break;
-                    case 12:
-                        message.startDebugFlag = reader.bool();
-                        break;
-                    case 13:
-                        message.startMainJs = reader.string();
-                        break;
-                    case 14:
-                        message.startMainMap = reader.string();
-                        break;
-                    case 20:
-                        message.codeFetchModuleSpecifier = reader.string();
-                        break;
-                    case 21:
-                        message.codeFetchContainingFile = reader.string();
-                        break;
-                    case 30:
-                        message.codeFetchResModuleName = reader.string();
-                        break;
-                    case 31:
-                        message.codeFetchResFilename = reader.string();
-                        break;
-                    case 32:
-                        message.codeFetchResSourceCode = reader.string();
-                        break;
-                    case 33:
-                        message.codeFetchResOutputCode = reader.string();
-                        break;
-                    case 41:
-                        message.codeCacheFilename = reader.string();
-                        break;
-                    case 42:
-                        message.codeCacheSourceCode = reader.string();
-                        break;
-                    case 43:
-                        message.codeCacheOutputCode = reader.string();
-                        break;
-                    case 50:
-                        message.exitCode = reader.int32();
-                        break;
-                    case 60:
-                        message.timerStartId = reader.int32();
-                        break;
-                    case 61:
-                        message.timerStartInterval = reader.bool();
-                        break;
-                    case 62:
-                        message.timerStartDelay = reader.int32();
-                        break;
-                    case 70:
-                        message.timerReadyId = reader.int32();
-                        break;
-                    case 71:
-                        message.timerReadyDone = reader.bool();
-                        break;
-                    case 80:
-                        message.timerClearId = reader.int32();
-                        break;
-                    case 90:
-                        message.fetchReqId = reader.int32();
-                        break;
-                    case 91:
-                        message.fetchReqUrl = reader.string();
-                        break;
-                    case 100:
-                        message.fetchResId = reader.int32();
-                        break;
-                    case 101:
-                        message.fetchResStatus = reader.int32();
-                        break;
-                    case 102:
-                        if (!(message.fetchResHeaderLine && message.fetchResHeaderLine.length))
-                            message.fetchResHeaderLine = [];
-                        message.fetchResHeaderLine.push(reader.string());
-                        break;
-                    case 103:
-                        message.fetchResBody = reader.bytes();
-                        break;
-                    case 110:
-                        message.readFileSyncFilename = reader.string();
-                        break;
-                    case 120:
-                        message.readFileSyncData = reader.bytes();
-                        break;
-                    case 130:
-                        message.writeFileSyncFilename = reader.string();
-                        break;
-                    case 131:
-                        message.writeFileSyncData = reader.bytes();
-                        break;
-                    case 132:
-                        message.writeFileSyncPerm = reader.uint32();
-                        break;
-                    default:
-                        reader.skipType(tag & 7);
-                        break;
-                    }
-                }
-                return message;
-            };
-    
-            /**
-             * Decodes a Msg message from the specified reader or buffer, length delimited.
-             * @function decodeDelimited
-             * @memberof deno.Msg
-             * @static
-             * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
-             * @returns {deno.Msg} Msg
-             * @throws {Error} If the payload is not a reader or valid buffer
-             * @throws {$protobuf.util.ProtocolError} If required fields are missing
-             */
-            Msg.decodeDelimited = function decodeDelimited(reader) {
-                if (!(reader instanceof $Reader))
-                    reader = new $Reader(reader);
-                return this.decode(reader, reader.uint32());
-            };
-    
-            /**
-             * Verifies a Msg message.
-             * @function verify
-             * @memberof deno.Msg
-             * @static
-             * @param {Object.<string,*>} message Plain object to verify
-             * @returns {string|null} `null` if valid, otherwise the reason why it is not
-             */
-            Msg.verify = function verify(message) {
-                if (typeof message !== "object" || message === null)
-                    return "object expected";
-                if (message.command != null && message.hasOwnProperty("command"))
-                    switch (message.command) {
-                    default:
-                        return "command: enum value expected";
-                    case 0:
-                    case 1:
-                    case 2:
-                    case 3:
-                    case 4:
-                    case 5:
-                    case 6:
-                    case 7:
-                    case 8:
-                    case 9:
-                    case 10:
-                    case 11:
-                    case 12:
-                    case 13:
-                        break;
-                    }
-                if (message.error != null && message.hasOwnProperty("error"))
-                    if (!$util.isString(message.error))
-                        return "error: string expected";
-                if (message.startCwd != null && message.hasOwnProperty("startCwd"))
-                    if (!$util.isString(message.startCwd))
-                        return "startCwd: string expected";
-                if (message.startArgv != null && message.hasOwnProperty("startArgv")) {
-                    if (!Array.isArray(message.startArgv))
-                        return "startArgv: array expected";
-                    for (var i = 0; i < message.startArgv.length; ++i)
-                        if (!$util.isString(message.startArgv[i]))
-                            return "startArgv: string[] expected";
-                }
-                if (message.startDebugFlag != null && message.hasOwnProperty("startDebugFlag"))
-                    if (typeof message.startDebugFlag !== "boolean")
-                        return "startDebugFlag: boolean expected";
-                if (message.startMainJs != null && message.hasOwnProperty("startMainJs"))
-                    if (!$util.isString(message.startMainJs))
-                        return "startMainJs: string expected";
-                if (message.startMainMap != null && message.hasOwnProperty("startMainMap"))
-                    if (!$util.isString(message.startMainMap))
-                        return "startMainMap: string expected";
-                if (message.codeFetchModuleSpecifier != null && message.hasOwnProperty("codeFetchModuleSpecifier"))
-                    if (!$util.isString(message.codeFetchModuleSpecifier))
-                        return "codeFetchModuleSpecifier: string expected";
-                if (message.codeFetchContainingFile != null && message.hasOwnProperty("codeFetchContainingFile"))
-                    if (!$util.isString(message.codeFetchContainingFile))
-                        return "codeFetchContainingFile: string expected";
-                if (message.codeFetchResModuleName != null && message.hasOwnProperty("codeFetchResModuleName"))
-                    if (!$util.isString(message.codeFetchResModuleName))
-                        return "codeFetchResModuleName: string expected";
-                if (message.codeFetchResFilename != null && message.hasOwnProperty("codeFetchResFilename"))
-                    if (!$util.isString(message.codeFetchResFilename))
-                        return "codeFetchResFilename: string expected";
-                if (message.codeFetchResSourceCode != null && message.hasOwnProperty("codeFetchResSourceCode"))
-                    if (!$util.isString(message.codeFetchResSourceCode))
-                        return "codeFetchResSourceCode: string expected";
-                if (message.codeFetchResOutputCode != null && message.hasOwnProperty("codeFetchResOutputCode"))
-                    if (!$util.isString(message.codeFetchResOutputCode))
-                        return "codeFetchResOutputCode: string expected";
-                if (message.codeCacheFilename != null && message.hasOwnProperty("codeCacheFilename"))
-                    if (!$util.isString(message.codeCacheFilename))
-                        return "codeCacheFilename: string expected";
-                if (message.codeCacheSourceCode != null && message.hasOwnProperty("codeCacheSourceCode"))
-                    if (!$util.isString(message.codeCacheSourceCode))
-                        return "codeCacheSourceCode: string expected";
-                if (message.codeCacheOutputCode != null && message.hasOwnProperty("codeCacheOutputCode"))
-                    if (!$util.isString(message.codeCacheOutputCode))
-                        return "codeCacheOutputCode: string expected";
-                if (message.exitCode != null && message.hasOwnProperty("exitCode"))
-                    if (!$util.isInteger(message.exitCode))
-                        return "exitCode: integer expected";
-                if (message.timerStartId != null && message.hasOwnProperty("timerStartId"))
-                    if (!$util.isInteger(message.timerStartId))
-                        return "timerStartId: integer expected";
-                if (message.timerStartInterval != null && message.hasOwnProperty("timerStartInterval"))
-                    if (typeof message.timerStartInterval !== "boolean")
-                        return "timerStartInterval: boolean expected";
-                if (message.timerStartDelay != null && message.hasOwnProperty("timerStartDelay"))
-                    if (!$util.isInteger(message.timerStartDelay))
-                        return "timerStartDelay: integer expected";
-                if (message.timerReadyId != null && message.hasOwnProperty("timerReadyId"))
-                    if (!$util.isInteger(message.timerReadyId))
-                        return "timerReadyId: integer expected";
-                if (message.timerReadyDone != null && message.hasOwnProperty("timerReadyDone"))
-                    if (typeof message.timerReadyDone !== "boolean")
-                        return "timerReadyDone: boolean expected";
-                if (message.timerClearId != null && message.hasOwnProperty("timerClearId"))
-                    if (!$util.isInteger(message.timerClearId))
-                        return "timerClearId: integer expected";
-                if (message.fetchReqId != null && message.hasOwnProperty("fetchReqId"))
-                    if (!$util.isInteger(message.fetchReqId))
-                        return "fetchReqId: integer expected";
-                if (message.fetchReqUrl != null && message.hasOwnProperty("fetchReqUrl"))
-                    if (!$util.isString(message.fetchReqUrl))
-                        return "fetchReqUrl: string expected";
-                if (message.fetchResId != null && message.hasOwnProperty("fetchResId"))
-                    if (!$util.isInteger(message.fetchResId))
-                        return "fetchResId: integer expected";
-                if (message.fetchResStatus != null && message.hasOwnProperty("fetchResStatus"))
-                    if (!$util.isInteger(message.fetchResStatus))
-                        return "fetchResStatus: integer expected";
-                if (message.fetchResHeaderLine != null && message.hasOwnProperty("fetchResHeaderLine")) {
-                    if (!Array.isArray(message.fetchResHeaderLine))
-                        return "fetchResHeaderLine: array expected";
-                    for (var i = 0; i < message.fetchResHeaderLine.length; ++i)
-                        if (!$util.isString(message.fetchResHeaderLine[i]))
-                            return "fetchResHeaderLine: string[] expected";
-                }
-                if (message.fetchResBody != null && message.hasOwnProperty("fetchResBody"))
-                    if (!(message.fetchResBody && typeof message.fetchResBody.length === "number" || $util.isString(message.fetchResBody)))
-                        return "fetchResBody: buffer expected";
-                if (message.readFileSyncFilename != null && message.hasOwnProperty("readFileSyncFilename"))
-                    if (!$util.isString(message.readFileSyncFilename))
-                        return "readFileSyncFilename: string expected";
-                if (message.readFileSyncData != null && message.hasOwnProperty("readFileSyncData"))
-                    if (!(message.readFileSyncData && typeof message.readFileSyncData.length === "number" || $util.isString(message.readFileSyncData)))
-                        return "readFileSyncData: buffer expected";
-                if (message.writeFileSyncFilename != null && message.hasOwnProperty("writeFileSyncFilename"))
-                    if (!$util.isString(message.writeFileSyncFilename))
-                        return "writeFileSyncFilename: string expected";
-                if (message.writeFileSyncData != null && message.hasOwnProperty("writeFileSyncData"))
-                    if (!(message.writeFileSyncData && typeof message.writeFileSyncData.length === "number" || $util.isString(message.writeFileSyncData)))
-                        return "writeFileSyncData: buffer expected";
-                if (message.writeFileSyncPerm != null && message.hasOwnProperty("writeFileSyncPerm"))
-                    if (!$util.isInteger(message.writeFileSyncPerm))
-                        return "writeFileSyncPerm: integer expected";
-                return null;
-            };
-    
-            /**
-             * Creates a Msg message from a plain object. Also converts values to their respective internal types.
-             * @function fromObject
-             * @memberof deno.Msg
-             * @static
-             * @param {Object.<string,*>} object Plain object
-             * @returns {deno.Msg} Msg
-             */
-            Msg.fromObject = function fromObject(object) {
-                if (object instanceof $root.deno.Msg)
-                    return object;
-                var message = new $root.deno.Msg();
-                switch (object.command) {
-                case "ERROR":
-                case 0:
-                    message.command = 0;
-                    break;
-                case "START":
-                case 1:
-                    message.command = 1;
-                    break;
-                case "CODE_FETCH":
-                case 2:
-                    message.command = 2;
-                    break;
-                case "CODE_FETCH_RES":
-                case 3:
-                    message.command = 3;
-                    break;
-                case "CODE_CACHE":
-                case 4:
-                    message.command = 4;
-                    break;
-                case "EXIT":
-                case 5:
-                    message.command = 5;
-                    break;
-                case "TIMER_START":
-                case 6:
-                    message.command = 6;
-                    break;
-                case "TIMER_READY":
-                case 7:
-                    message.command = 7;
-                    break;
-                case "TIMER_CLEAR":
-                case 8:
-                    message.command = 8;
-                    break;
-                case "FETCH_REQ":
-                case 9:
-                    message.command = 9;
-                    break;
-                case "FETCH_RES":
-                case 10:
-                    message.command = 10;
-                    break;
-                case "READ_FILE_SYNC":
-                case 11:
-                    message.command = 11;
-                    break;
-                case "READ_FILE_SYNC_RES":
-                case 12:
-                    message.command = 12;
-                    break;
-                case "WRITE_FILE_SYNC":
-                case 13:
-                    message.command = 13;
-                    break;
-                }
-                if (object.error != null)
-                    message.error = String(object.error);
-                if (object.startCwd != null)
-                    message.startCwd = String(object.startCwd);
-                if (object.startArgv) {
-                    if (!Array.isArray(object.startArgv))
-                        throw TypeError(".deno.Msg.startArgv: array expected");
-                    message.startArgv = [];
-                    for (var i = 0; i < object.startArgv.length; ++i)
-                        message.startArgv[i] = String(object.startArgv[i]);
-                }
-                if (object.startDebugFlag != null)
-                    message.startDebugFlag = Boolean(object.startDebugFlag);
-                if (object.startMainJs != null)
-                    message.startMainJs = String(object.startMainJs);
-                if (object.startMainMap != null)
-                    message.startMainMap = String(object.startMainMap);
-                if (object.codeFetchModuleSpecifier != null)
-                    message.codeFetchModuleSpecifier = String(object.codeFetchModuleSpecifier);
-                if (object.codeFetchContainingFile != null)
-                    message.codeFetchContainingFile = String(object.codeFetchContainingFile);
-                if (object.codeFetchResModuleName != null)
-                    message.codeFetchResModuleName = String(object.codeFetchResModuleName);
-                if (object.codeFetchResFilename != null)
-                    message.codeFetchResFilename = String(object.codeFetchResFilename);
-                if (object.codeFetchResSourceCode != null)
-                    message.codeFetchResSourceCode = String(object.codeFetchResSourceCode);
-                if (object.codeFetchResOutputCode != null)
-                    message.codeFetchResOutputCode = String(object.codeFetchResOutputCode);
-                if (object.codeCacheFilename != null)
-                    message.codeCacheFilename = String(object.codeCacheFilename);
-                if (object.codeCacheSourceCode != null)
-                    message.codeCacheSourceCode = String(object.codeCacheSourceCode);
-                if (object.codeCacheOutputCode != null)
-                    message.codeCacheOutputCode = String(object.codeCacheOutputCode);
-                if (object.exitCode != null)
-                    message.exitCode = object.exitCode | 0;
-                if (object.timerStartId != null)
-                    message.timerStartId = object.timerStartId | 0;
-                if (object.timerStartInterval != null)
-                    message.timerStartInterval = Boolean(object.timerStartInterval);
-                if (object.timerStartDelay != null)
-                    message.timerStartDelay = object.timerStartDelay | 0;
-                if (object.timerReadyId != null)
-                    message.timerReadyId = object.timerReadyId | 0;
-                if (object.timerReadyDone != null)
-                    message.timerReadyDone = Boolean(object.timerReadyDone);
-                if (object.timerClearId != null)
-                    message.timerClearId = object.timerClearId | 0;
-                if (object.fetchReqId != null)
-                    message.fetchReqId = object.fetchReqId | 0;
-                if (object.fetchReqUrl != null)
-                    message.fetchReqUrl = String(object.fetchReqUrl);
-                if (object.fetchResId != null)
-                    message.fetchResId = object.fetchResId | 0;
-                if (object.fetchResStatus != null)
-                    message.fetchResStatus = object.fetchResStatus | 0;
-                if (object.fetchResHeaderLine) {
-                    if (!Array.isArray(object.fetchResHeaderLine))
-                        throw TypeError(".deno.Msg.fetchResHeaderLine: array expected");
-                    message.fetchResHeaderLine = [];
-                    for (var i = 0; i < object.fetchResHeaderLine.length; ++i)
-                        message.fetchResHeaderLine[i] = String(object.fetchResHeaderLine[i]);
-                }
-                if (object.fetchResBody != null)
-                    if (typeof object.fetchResBody === "string")
-                        $util.base64.decode(object.fetchResBody, message.fetchResBody = $util.newBuffer($util.base64.length(object.fetchResBody)), 0);
-                    else if (object.fetchResBody.length)
-                        message.fetchResBody = object.fetchResBody;
-                if (object.readFileSyncFilename != null)
-                    message.readFileSyncFilename = String(object.readFileSyncFilename);
-                if (object.readFileSyncData != null)
-                    if (typeof object.readFileSyncData === "string")
-                        $util.base64.decode(object.readFileSyncData, message.readFileSyncData = $util.newBuffer($util.base64.length(object.readFileSyncData)), 0);
-                    else if (object.readFileSyncData.length)
-                        message.readFileSyncData = object.readFileSyncData;
-                if (object.writeFileSyncFilename != null)
-                    message.writeFileSyncFilename = String(object.writeFileSyncFilename);
-                if (object.writeFileSyncData != null)
-                    if (typeof object.writeFileSyncData === "string")
-                        $util.base64.decode(object.writeFileSyncData, message.writeFileSyncData = $util.newBuffer($util.base64.length(object.writeFileSyncData)), 0);
-                    else if (object.writeFileSyncData.length)
-                        message.writeFileSyncData = object.writeFileSyncData;
-                if (object.writeFileSyncPerm != null)
-                    message.writeFileSyncPerm = object.writeFileSyncPerm >>> 0;
-                return message;
-            };
-    
-            /**
-             * Creates a plain object from a Msg message. Also converts values to other types if specified.
-             * @function toObject
-             * @memberof deno.Msg
-             * @static
-             * @param {deno.Msg} message Msg
-             * @param {$protobuf.IConversionOptions} [options] Conversion options
-             * @returns {Object.<string,*>} Plain object
-             */
-            Msg.toObject = function toObject(message, options) {
-                if (!options)
-                    options = {};
-                var object = {};
-                if (options.arrays || options.defaults) {
-                    object.startArgv = [];
-                    object.fetchResHeaderLine = [];
-                }
-                if (options.defaults) {
-                    object.command = options.enums === String ? "ERROR" : 0;
-                    object.error = "";
-                    object.startCwd = "";
-                    object.startDebugFlag = false;
-                    object.startMainJs = "";
-                    object.startMainMap = "";
-                    object.codeFetchModuleSpecifier = "";
-                    object.codeFetchContainingFile = "";
-                    object.codeFetchResModuleName = "";
-                    object.codeFetchResFilename = "";
-                    object.codeFetchResSourceCode = "";
-                    object.codeFetchResOutputCode = "";
-                    object.codeCacheFilename = "";
-                    object.codeCacheSourceCode = "";
-                    object.codeCacheOutputCode = "";
-                    object.exitCode = 0;
-                    object.timerStartId = 0;
-                    object.timerStartInterval = false;
-                    object.timerStartDelay = 0;
-                    object.timerReadyId = 0;
-                    object.timerReadyDone = false;
-                    object.timerClearId = 0;
-                    object.fetchReqId = 0;
-                    object.fetchReqUrl = "";
-                    object.fetchResId = 0;
-                    object.fetchResStatus = 0;
-                    object.fetchResBody = options.bytes === String ? "" : [];
-                    object.readFileSyncFilename = "";
-                    object.readFileSyncData = options.bytes === String ? "" : [];
-                    object.writeFileSyncFilename = "";
-                    object.writeFileSyncData = options.bytes === String ? "" : [];
-                    object.writeFileSyncPerm = 0;
-                }
-                if (message.command != null && message.hasOwnProperty("command"))
-                    object.command = options.enums === String ? $root.deno.Msg.Command[message.command] : message.command;
-                if (message.error != null && message.hasOwnProperty("error"))
-                    object.error = message.error;
-                if (message.startCwd != null && message.hasOwnProperty("startCwd"))
-                    object.startCwd = message.startCwd;
-                if (message.startArgv && message.startArgv.length) {
-                    object.startArgv = [];
-                    for (var j = 0; j < message.startArgv.length; ++j)
-                        object.startArgv[j] = message.startArgv[j];
-                }
-                if (message.startDebugFlag != null && message.hasOwnProperty("startDebugFlag"))
-                    object.startDebugFlag = message.startDebugFlag;
-                if (message.startMainJs != null && message.hasOwnProperty("startMainJs"))
-                    object.startMainJs = message.startMainJs;
-                if (message.startMainMap != null && message.hasOwnProperty("startMainMap"))
-                    object.startMainMap = message.startMainMap;
-                if (message.codeFetchModuleSpecifier != null && message.hasOwnProperty("codeFetchModuleSpecifier"))
-                    object.codeFetchModuleSpecifier = message.codeFetchModuleSpecifier;
-                if (message.codeFetchContainingFile != null && message.hasOwnProperty("codeFetchContainingFile"))
-                    object.codeFetchContainingFile = message.codeFetchContainingFile;
-                if (message.codeFetchResModuleName != null && message.hasOwnProperty("codeFetchResModuleName"))
-                    object.codeFetchResModuleName = message.codeFetchResModuleName;
-                if (message.codeFetchResFilename != null && message.hasOwnProperty("codeFetchResFilename"))
-                    object.codeFetchResFilename = message.codeFetchResFilename;
-                if (message.codeFetchResSourceCode != null && message.hasOwnProperty("codeFetchResSourceCode"))
-                    object.codeFetchResSourceCode = message.codeFetchResSourceCode;
-                if (message.codeFetchResOutputCode != null && message.hasOwnProperty("codeFetchResOutputCode"))
-                    object.codeFetchResOutputCode = message.codeFetchResOutputCode;
-                if (message.codeCacheFilename != null && message.hasOwnProperty("codeCacheFilename"))
-                    object.codeCacheFilename = message.codeCacheFilename;
-                if (message.codeCacheSourceCode != null && message.hasOwnProperty("codeCacheSourceCode"))
-                    object.codeCacheSourceCode = message.codeCacheSourceCode;
-                if (message.codeCacheOutputCode != null && message.hasOwnProperty("codeCacheOutputCode"))
-                    object.codeCacheOutputCode = message.codeCacheOutputCode;
-                if (message.exitCode != null && message.hasOwnProperty("exitCode"))
-                    object.exitCode = message.exitCode;
-                if (message.timerStartId != null && message.hasOwnProperty("timerStartId"))
-                    object.timerStartId = message.timerStartId;
-                if (message.timerStartInterval != null && message.hasOwnProperty("timerStartInterval"))
-                    object.timerStartInterval = message.timerStartInterval;
-                if (message.timerStartDelay != null && message.hasOwnProperty("timerStartDelay"))
-                    object.timerStartDelay = message.timerStartDelay;
-                if (message.timerReadyId != null && message.hasOwnProperty("timerReadyId"))
-                    object.timerReadyId = message.timerReadyId;
-                if (message.timerReadyDone != null && message.hasOwnProperty("timerReadyDone"))
-                    object.timerReadyDone = message.timerReadyDone;
-                if (message.timerClearId != null && message.hasOwnProperty("timerClearId"))
-                    object.timerClearId = message.timerClearId;
-                if (message.fetchReqId != null && message.hasOwnProperty("fetchReqId"))
-                    object.fetchReqId = message.fetchReqId;
-                if (message.fetchReqUrl != null && message.hasOwnProperty("fetchReqUrl"))
-                    object.fetchReqUrl = message.fetchReqUrl;
-                if (message.fetchResId != null && message.hasOwnProperty("fetchResId"))
-                    object.fetchResId = message.fetchResId;
-                if (message.fetchResStatus != null && message.hasOwnProperty("fetchResStatus"))
-                    object.fetchResStatus = message.fetchResStatus;
-                if (message.fetchResHeaderLine && message.fetchResHeaderLine.length) {
-                    object.fetchResHeaderLine = [];
-                    for (var j = 0; j < message.fetchResHeaderLine.length; ++j)
-                        object.fetchResHeaderLine[j] = message.fetchResHeaderLine[j];
-                }
-                if (message.fetchResBody != null && message.hasOwnProperty("fetchResBody"))
-                    object.fetchResBody = options.bytes === String ? $util.base64.encode(message.fetchResBody, 0, message.fetchResBody.length) : options.bytes === Array ? Array.prototype.slice.call(message.fetchResBody) : message.fetchResBody;
-                if (message.readFileSyncFilename != null && message.hasOwnProperty("readFileSyncFilename"))
-                    object.readFileSyncFilename = message.readFileSyncFilename;
-                if (message.readFileSyncData != null && message.hasOwnProperty("readFileSyncData"))
-                    object.readFileSyncData = options.bytes === String ? $util.base64.encode(message.readFileSyncData, 0, message.readFileSyncData.length) : options.bytes === Array ? Array.prototype.slice.call(message.readFileSyncData) : message.readFileSyncData;
-                if (message.writeFileSyncFilename != null && message.hasOwnProperty("writeFileSyncFilename"))
-                    object.writeFileSyncFilename = message.writeFileSyncFilename;
-                if (message.writeFileSyncData != null && message.hasOwnProperty("writeFileSyncData"))
-                    object.writeFileSyncData = options.bytes === String ? $util.base64.encode(message.writeFileSyncData, 0, message.writeFileSyncData.length) : options.bytes === Array ? Array.prototype.slice.call(message.writeFileSyncData) : message.writeFileSyncData;
-                if (message.writeFileSyncPerm != null && message.hasOwnProperty("writeFileSyncPerm"))
-                    object.writeFileSyncPerm = message.writeFileSyncPerm;
-                return object;
-            };
-    
-            /**
-             * Converts this Msg to JSON.
-             * @function toJSON
-             * @memberof deno.Msg
-             * @instance
-             * @returns {Object.<string,*>} JSON object
-             */
-            Msg.prototype.toJSON = function toJSON() {
-                return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
-            };
-    
-            /**
-             * Command enum.
-             * @name deno.Msg.Command
-             * @enum {string}
-             * @property {number} ERROR=0 ERROR value
-             * @property {number} START=1 START value
-             * @property {number} CODE_FETCH=2 CODE_FETCH value
-             * @property {number} CODE_FETCH_RES=3 CODE_FETCH_RES value
-             * @property {number} CODE_CACHE=4 CODE_CACHE value
-             * @property {number} EXIT=5 EXIT value
-             * @property {number} TIMER_START=6 TIMER_START value
-             * @property {number} TIMER_READY=7 TIMER_READY value
-             * @property {number} TIMER_CLEAR=8 TIMER_CLEAR value
-             * @property {number} FETCH_REQ=9 FETCH_REQ value
-             * @property {number} FETCH_RES=10 FETCH_RES value
-             * @property {number} READ_FILE_SYNC=11 READ_FILE_SYNC value
-             * @property {number} READ_FILE_SYNC_RES=12 READ_FILE_SYNC_RES value
-             * @property {number} WRITE_FILE_SYNC=13 WRITE_FILE_SYNC value
-             */
-            Msg.Command = (function() {
-                var valuesById = {}, values = Object.create(valuesById);
-                values[valuesById[0] = "ERROR"] = 0;
-                values[valuesById[1] = "START"] = 1;
-                values[valuesById[2] = "CODE_FETCH"] = 2;
-                values[valuesById[3] = "CODE_FETCH_RES"] = 3;
-                values[valuesById[4] = "CODE_CACHE"] = 4;
-                values[valuesById[5] = "EXIT"] = 5;
-                values[valuesById[6] = "TIMER_START"] = 6;
-                values[valuesById[7] = "TIMER_READY"] = 7;
-                values[valuesById[8] = "TIMER_CLEAR"] = 8;
-                values[valuesById[9] = "FETCH_REQ"] = 9;
-                values[valuesById[10] = "FETCH_RES"] = 10;
-                values[valuesById[11] = "READ_FILE_SYNC"] = 11;
-                values[valuesById[12] = "READ_FILE_SYNC_RES"] = 12;
-                values[valuesById[13] = "WRITE_FILE_SYNC"] = 13;
-                return values;
-            })();
-    
-            return Msg;
-        })();
-    
-        return deno;
-    })();
-
-    return $root;
-});
diff --git a/js/msg_generated.ts b/js/msg_generated.ts
new file mode 100644
index 000000000..aa8f00012
--- /dev/null
+++ b/js/msg_generated.ts
@@ -0,0 +1,161 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+/**
+ * @enum
+ */
+export namespace deno{
+export enum Command{
+  START= 0
+}};
+
+/**
+ * @constructor
+ */
+export namespace deno{
+export class Msg {
+  /**
+   * @type {flatbuffers.ByteBuffer}
+   */
+  bb: flatbuffers.ByteBuffer|null = null;
+
+  /**
+   * @type {number}
+   */
+  bb_pos:number = 0;
+/**
+ * @param {number} i
+ * @param {flatbuffers.ByteBuffer} bb
+ * @returns {Msg}
+ */
+__init(i:number, bb:flatbuffers.ByteBuffer):Msg {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+};
+
+/**
+ * @param {flatbuffers.ByteBuffer} bb
+ * @param {Msg=} obj
+ * @returns {Msg}
+ */
+static getRootAsMsg(bb:flatbuffers.ByteBuffer, obj?:Msg):Msg {
+  return (obj || new Msg).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+};
+
+/**
+ * @returns {deno.Command}
+ */
+command():deno.Command {
+  var offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? /** @type {deno.Command} */ (this.bb!.readInt8(this.bb_pos + offset)) : deno.Command.START;
+};
+
+/**
+ * @param {deno.Command} value
+ * @returns {boolean}
+ */
+mutate_command(value:deno.Command):boolean {
+  var offset = this.bb!.__offset(this.bb_pos, 4);
+
+  if (offset === 0) {
+    return false;
+  }
+
+  this.bb!.writeInt8(this.bb_pos + offset, value);
+  return true;
+};
+
+/**
+ * @param {flatbuffers.Encoding=} optionalEncoding
+ * @returns {string|Uint8Array|null}
+ */
+startCwd():string|null
+startCwd(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+startCwd(optionalEncoding?:any):string|Uint8Array|null {
+  var offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+};
+
+/**
+ * @param {number} index
+ * @param {flatbuffers.Encoding=} optionalEncoding
+ * @returns {string|Uint8Array}
+ */
+startArgv(index: number):string
+startArgv(index: number,optionalEncoding:flatbuffers.Encoding):string|Uint8Array
+startArgv(index: number,optionalEncoding?:any):string|Uint8Array|null {
+  var offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? this.bb!.__string(this.bb!.__vector(this.bb_pos + offset) + index * 4, optionalEncoding) : null;
+};
+
+/**
+ * @returns {number}
+ */
+startArgvLength():number {
+  var offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+};
+
+/**
+ * @param {flatbuffers.Builder} builder
+ */
+static startMsg(builder:flatbuffers.Builder) {
+  builder.startObject(3);
+};
+
+/**
+ * @param {flatbuffers.Builder} builder
+ * @param {deno.Command} command
+ */
+static addCommand(builder:flatbuffers.Builder, command:deno.Command) {
+  builder.addFieldInt8(0, command, deno.Command.START);
+};
+
+/**
+ * @param {flatbuffers.Builder} builder
+ * @param {flatbuffers.Offset} startCwdOffset
+ */
+static addStartCwd(builder:flatbuffers.Builder, startCwdOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, startCwdOffset, 0);
+};
+
+/**
+ * @param {flatbuffers.Builder} builder
+ * @param {flatbuffers.Offset} startArgvOffset
+ */
+static addStartArgv(builder:flatbuffers.Builder, startArgvOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(2, startArgvOffset, 0);
+};
+
+/**
+ * @param {flatbuffers.Builder} builder
+ * @param {Array.<flatbuffers.Offset>} data
+ * @returns {flatbuffers.Offset}
+ */
+static createStartArgvVector(builder:flatbuffers.Builder, data:flatbuffers.Offset[]):flatbuffers.Offset {
+  builder.startVector(4, data.length, 4);
+  for (var i = data.length - 1; i >= 0; i--) {
+    builder.addOffset(data[i]);
+  }
+  return builder.endVector();
+};
+
+/**
+ * @param {flatbuffers.Builder} builder
+ * @param {number} numElems
+ */
+static startStartArgvVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(4, numElems, 4);
+};
+
+/**
+ * @param {flatbuffers.Builder} builder
+ * @returns {flatbuffers.Offset}
+ */
+static endMsg(builder:flatbuffers.Builder):flatbuffers.Offset {
+  var offset = builder.endObject();
+  return offset;
+};
+
+}
+}
diff --git a/js/package.json b/js/package.json
index 3451843c9..e93ab1f1b 100644
--- a/js/package.json
+++ b/js/package.json
@@ -1,18 +1,14 @@
 {
   "devDependencies": {
     "@types/base64-js": "^1.2.5",
+    "@types/flatbuffers": "^1.9.0",
     "@types/source-map-support": "^0.4.1",
-    "espree": "^3.5.3",
-    "jsdoc": "^3.5.5",
-    "minimist": "^1.2.0",
+    "flatbuffers": "^1.9.0",
     "parcel-bundler": "^1.8.1",
-    "protobufjs": "^6.8.6",
-    "tmp": "0.0.33",
     "tslint": "^5.10.0",
     "tslint-eslint-rules": "^5.3.1",
     "tslint-no-circular-imports": "^0.5.0",
-    "typescript": "^2.9.1",
-    "uglify-js": "^2.8.29"
+    "typescript": "^2.9.1"
   },
   "browserslist": [
     "chrome 69"
diff --git a/js/pbjs_hack.py b/js/pbjs_hack.py
deleted file mode 100755
index 19b7c1691..000000000
--- a/js/pbjs_hack.py
+++ /dev/null
@@ -1,48 +0,0 @@
-#!/usr/bin/env python
-"""
-gn can only run python scripts.
-
-Generates protobufjs code.
-"""
-import subprocess
-import sys
-import os
-# TODO(ry) Ideally protobufjs output files should be written into
-# target_gen_dir, but its difficult to get this working in a way that parcel can
-# resolve their location. (Parcel does not support NODE_PATH.) Therefore this
-# hack: write the generated msg.pb.js and msg.pb.d.ts outputs into the js/
-# folder, and we check them into the repo. Hopefully this hack can be removed at
-# some point. If msg.proto is changed, commit changes to the generated JS
-# files.
-
-js_path = os.path.dirname(os.path.realpath(__file__))
-pbjs_path = os.path.join(js_path, "node_modules", "protobufjs", "bin")
-pbjs_bin = os.path.join(pbjs_path, "pbjs")
-pbts_bin = os.path.join(pbjs_path, "pbts")
-msg_pbjs_out = os.path.join(js_path, "msg.pb.js")
-msg_pbts_out = os.path.join(js_path, "msg.pb.d.ts")
-assert os.path.exists(pbjs_bin)
-assert os.path.exists(pbts_bin)
-
-proto_in = sys.argv[1]
-stamp_file = sys.argv[2]
-
-
-def touch(fname):
-    if os.path.exists(fname):
-        os.utime(fname, None)
-    else:
-        open(fname, 'a').close()
-
-
-subprocess.check_call([
-    "node", pbjs_bin, "--target=static-module", "--wrapper=commonjs",
-    "--out=" + msg_pbjs_out, proto_in
-])
-assert os.path.exists(msg_pbjs_out)
-
-subprocess.check_call(
-    ["node", pbts_bin, "--out=" + msg_pbts_out, msg_pbjs_out])
-assert os.path.exists(msg_pbts_out)
-
-touch(stamp_file)