diff --git a/.eslintignore b/.eslintignore
index 8ddba4887b00..c881418c4b21 100644
--- a/.eslintignore
+++ b/.eslintignore
@@ -110,7 +110,6 @@ devtools/client/webide/**
 devtools/server/**
 !devtools/server/actors/webbrowser.js
 !devtools/server/actors/styles.js
-!devtools/server/actors/string.js
 devtools/shared/*.js
 !devtools/shared/css-lexer.js
 !devtools/shared/defer.js
diff --git a/devtools/server/actors/string.js b/devtools/server/actors/string.js
index a89df3fe5c08..a252e5bbc823 100644
--- a/devtools/server/actors/string.js
+++ b/devtools/server/actors/string.js
@@ -4,13 +4,14 @@
 
 "use strict";
 
+var {Cu} = require("chrome");
 var {DebuggerServer} = require("devtools/server/main");
 
 var promise = require("promise");
 var {Class} = require("sdk/core/heritage");
 
 var protocol = require("devtools/shared/protocol");
-var {method, Arg, RetVal} = protocol;
+var {method, Arg, Option, RetVal} = protocol;
 
 exports.LongStringActor = protocol.ActorClass({
   typeName: "longstractor",
@@ -63,17 +64,9 @@ exports.ShortLongString = Class({
     this.str = str;
   },
 
-  get length() {
-    return this.str.length;
-  },
-
-  get initial() {
-    return this.str;
-  },
-
-  string: function () {
-    return promise.resolve(this.str);
-  },
+  get length() { return this.str.length; },
+  get initial() { return this.str; },
+  string: function () { return promise.resolve(this.str); },
 
   substring: function (start, end) {
     return promise.resolve(this.str.substring(start, end));
@@ -106,12 +99,13 @@ exports.LongStringFront = protocol.FrontClass(exports.LongStringActor, {
   string: function () {
     if (!this.strPromise) {
       let promiseRest = (thusFar) => {
-        if (thusFar.length === this.length) {
+        if (thusFar.length === this.length)
           return promise.resolve(thusFar);
+        else {
+          return this.substring(thusFar.length,
+                                thusFar.length + DebuggerServer.LONG_STRING_READ_LENGTH)
+            .then((next) => promiseRest(thusFar + next));
         }
-        return this.substring(thusFar.length,
-          thusFar.length + DebuggerServer.LONG_STRING_READ_LENGTH)
-          .then((next) => promiseRest(thusFar + next));
       };
 
       this.strPromise = promiseRest(this.initial);
@@ -130,11 +124,11 @@ protocol.types.addType("longstring", {
     if (!(context instanceof protocol.Actor)) {
       throw Error("Passing a longstring as an argument isn't supported.");
     }
-
     if (value.short) {
       return value.str;
+    } else {
+      return stringActorType.write(value, context, detail);
     }
-    return stringActorType.write(value, context, detail);
   },
   read: (value, context, detail) => {
     if (context instanceof protocol.Actor) {