Replace $.extend

(imported from commit 2c1ee3c2714d388f2a71398fe81c049cc54ff94d)

static/js/blueslip.js

@@ -23,7 +23,7 @@ var console = (function () {
 var reported_errors = {};
 var last_report_attempt = {};
 function report_error(msg, stack, opts) {
-    opts = $.extend({}, {show_ui_msg: false}, opts);
+    opts = _.extend({show_ui_msg: false}, opts);
 
     if (stack === undefined) {
         stack = 'No stacktrace available';

static/js/compose.js

@@ -207,7 +207,7 @@ exports.start = function (msg_type, opts) {
     // Set default parameters based on the current narrowed view.
     narrow.set_compose_defaults(default_opts);
 
-    opts = $.extend(default_opts, opts);
+    opts = _.extend(default_opts, opts);
 
     if (!(compose.composing() === msg_type &&
           ((msg_type === "stream" &&
@@ -312,7 +312,7 @@ exports.snapshot_message = function (message) {
     }
 
     if (message !== undefined) {
-        message_snapshot = $.extend({}, message);
+        message_snapshot = _.extend({}, message);
     } else {
         // Save what we can.
         message_snapshot = create_message_object();
@@ -328,14 +328,13 @@ exports.restore_message = function () {
     if (!message_snapshot) {
         return;
     }
-    var snapshot_copy = $.extend({}, message_snapshot);
+    var snapshot_copy = _.extend({}, message_snapshot);
     if ((snapshot_copy.type === "stream" &&
          snapshot_copy.stream.length > 0 &&
          snapshot_copy.subject.length > 0) ||
         (snapshot_copy.type === "private" &&
          snapshot_copy.reply_to.length > 0)) {
-        snapshot_copy = $.extend({replying_to_message: snapshot_copy},
-                                 snapshot_copy);
+        _.defaults(snapshot_copy, {replying_to_message: snapshot_copy});
     }
     clear_message_snapshot();
     exports.unfade_messages(true);
@@ -392,7 +391,8 @@ function send_message() {
             else {
                 respond_to_cursor = false;
                 if (page_params.staging) {
-                    var new_msg = $.extend({replying_to_message: request}, request);
+                    var new_msg = _.extend({replying_to_message: request},
+                                           request);
                     new_msg.content = "";
                     compose.start(new_msg.type, new_msg);
                 }

static/js/message_list.js

@@ -1,6 +1,6 @@
 /*jslint nomen: true */
 function MessageList(table_name, filter, opts) {
-    $.extend(this, {collapse_messages: true}, opts);
+    _.extend(this, {collapse_messages: true}, opts);
     this._items = [];
     this._hash = {};
     this.table_name = table_name;
@@ -93,7 +93,7 @@ MessageList.prototype = {
     },
 
     clear: function  MessageList_clear(opts) {
-        opts = $.extend({}, {clear_selected_id: true}, opts);
+        opts = _.extend({clear_selected_id: true}, opts);
 
         this._items = [];
         this._hash = {};
@@ -109,7 +109,7 @@ MessageList.prototype = {
     },
 
     select_id: function MessageList_select_id(id, opts) {
-        opts = $.extend({
+        opts = _.extend({
                 then_scroll: false,
                 use_closest: false,
                 mark_read: true

static/js/narrow.js

@@ -334,12 +334,12 @@ exports.activate = function (operators, opts) {
         return exports.deactivate();
     }
 
-    opts = $.extend({}, {
+    opts = _.defaults({}, opts, {
         then_select_id: home_msg_list.selected_id(),
         select_first_unread: false,
         change_hash: true,
         trigger: 'unknown'
-    }, opts);
+    });
 
     if (opts.then_select_id === -1) {
         // If we're loading the page via a narrowed URL, we may not
@@ -481,7 +481,7 @@ exports.by_subject = function (target_id, opts) {
         return;
     }
     mark_message_as_read(original);
-    opts = $.extend({}, {then_select_id: target_id}, opts);
+    opts = _.defaults({}, opts, {then_select_id: target_id});
     exports.activate([
             ['stream',  original.stream],
             ['topic', original.subject]
@@ -490,7 +490,7 @@ exports.by_subject = function (target_id, opts) {
 
 // Called for the 'narrow by stream' hotkey.
 exports.by_recipient = function (target_id, opts) {
-    opts = $.extend({}, {then_select_id: target_id}, opts);
+    opts = _.defaults({}, opts, {then_select_id: target_id});
     var message = current_msg_list.get(target_id);
     mark_message_as_read(message);
     switch (message.type) {
@@ -505,7 +505,7 @@ exports.by_recipient = function (target_id, opts) {
 };
 
 exports.by_time_travel = function (target_id, opts) {
-    opts = $.extend({}, {then_select_id: target_id}, opts);
+    opts = _.defaults({}, opts, {then_select_id: target_id});
     narrow.activate([], opts);
 };
 

static/js/reload.js

@@ -107,10 +107,11 @@ function do_reload_app(send_after_reload, save_state, message) {
 }
 
 exports.initiate = function (options) {
-    var defaults = {immediate: false,
-                    save_state: true,
-                    send_after_reload: false};
-    options = $.extend(defaults, options);
+    options = _.defaults({}, options, {
+        immediate: false,
+        save_state: true,
+        send_after_reload: false
+    });
 
     if (options.immediate) {
         do_reload_app(options.send_after_reload, options.save_state, options.message);

static/js/subs.js

@@ -152,12 +152,12 @@ var subscriptions_table_colorpicker_options = {
 };
 
 function set_colorpicker_color(colorpicker, color) {
-    colorpicker.spectrum($.extend(subscriptions_table_colorpicker_options,
+    colorpicker.spectrum(_.extend(subscriptions_table_colorpicker_options,
                          {color: color}));
 }
 
 function update_stream_color(stream_name, color, opts) {
-    opts = $.extend({}, {update_historical: false}, opts);
+    opts = _.defaults({}, opts, {update_historical: false});
     var sub = get_sub(stream_name);
     sub.color = color;
     var id = parseInt(sub.id, 10);
@@ -304,13 +304,16 @@ function create_sub(stream_name, attrs) {
         return sub;
     }
 
-    sub = $.extend({}, {name: stream_name, id: next_sub_id++,
-                        render_subscribers: should_render_subscribers(),
-                        subscribed: true, in_home_view: true, invite_only: false,
-                        notifications: false}, attrs);
-    if (sub.color === undefined) {
-        sub.color = pick_color();
-    }
+    sub = _.defaults({}, attrs, {
+        name: stream_name,
+        id: next_sub_id++,
+        render_subscribers: should_render_subscribers(),
+        subscribed: true,
+        in_home_view: true,
+        invite_only: false,
+        notifications: false,
+        color: pick_color()
+    });
     mark_color_used(sub.color);
 
     add_sub(stream_name, sub);
@@ -548,7 +551,7 @@ function populate_subscriptions(subs, subscribed) {
 
 exports.reload_subscriptions = function (opts) {
     var on_success;
-    opts = $.extend({}, {clear_first: false, custom_callbacks: false}, opts);
+    opts = _.defaults({}, opts, {clear_first: false, custom_callbacks: false});
 
     if (! opts.custom_callbacks) {
         on_success = function (data) {

static/js/util.js

@@ -33,7 +33,7 @@ exports.set_favicon = function (url) {
 };
 
 exports.make_loading_indicator = function (outer_container, opts) {
-    opts = $.extend({}, opts);
+    opts = opts || {};
     var container = outer_container;
     container.empty();
 

static/js/zephyr.js

@@ -153,7 +153,8 @@ function keep_pointer_in_view() {
 }
 
 function recenter_view(message, opts) {
-    opts = $.extend({}, opts);
+    opts = opts || {};
+
     // Barnowl-style recentering: if the pointer is too high, move it to
     // the 1/2 marks. If the pointer is too low, move it to the 1/7 mark.
     // See keep_pointer_in_view() for related logic to keep the pointer onscreen.
@@ -932,8 +933,7 @@ function get_updates_success(data) {
 var get_updates_xhr;
 var get_updates_timeout;
 function get_updates(options) {
-    var defaults = {dont_block: false};
-    options = $.extend({}, defaults, options);
+    options = _.extend({dont_block: false}, options);
 
     get_updates_params.pointer = furthest_read;
     get_updates_params.dont_block = options.dont_block || get_updates_failures > 0;
@@ -1003,9 +1003,7 @@ function force_get_updates() {
 }
 
 function load_old_messages(opts) {
-    opts = $.extend({}, {
-        cont_will_add_messages: false
-    }, opts);
+    opts = _.extend({cont_will_add_messages: false}, opts);
 
     var data = {anchor: opts.anchor,
                 num_before: opts.num_before,