js: Convert static/js/spoilers.js to ES6 module.

Signed-off-by: Anders Kaseorg <anders@zulip.com>

.eslintrc.json

@@ -249,7 +249,6 @@
                 "settings_toggle": false,
                 "settings_user_groups": false,
                 "settings_users": false,
-                "spoilers": false,
                 "starred_messages": false,
                 "stream_color": false,
                 "stream_data": false,

frontend_tests/node_tests/ui_init.js

@@ -88,7 +88,6 @@ zrequire("color_data");
 zrequire("stream_data");
 zrequire("muting");
 zrequire("condense");
-zrequire("spoilers");
 zrequire("lightbox");
 zrequire("overlays");
 zrequire("message_view_header");

static/js/bundles/app.js

@@ -154,7 +154,6 @@ import "../compose_ui";
 import "../panels";
 import "../recent_topics";
 import "../search_pill_widget";
-import "../spoilers";
 import "../desktop_integration";
 
 // Import styles

static/js/notifications.js

@@ -9,6 +9,7 @@ const alert_words = require("./alert_words");
 const favicon = require("./favicon");
 const people = require("./people");
 const settings_config = require("./settings_config");
+const spoilers = require("./spoilers");
 const stream_ui_updates = require("./stream_ui_updates");
 
 const notice_memory = new Map();

static/js/spoilers.js

@@ -1,5 +1,3 @@
-"use strict";
-
 function collapse_spoiler(spoiler) {
     const spoiler_height = spoiler.height();
 
@@ -35,7 +33,7 @@ function expand_spoiler(spoiler) {
     });
 }
 
-exports.hide_spoilers_in_notification = (content) => {
+export const hide_spoilers_in_notification = (content) => {
     content.find(".spoiler-block").each((i, elem) => {
         $(elem).find(".spoiler-content").remove();
         let text = $(elem).find(".spoiler-header").text().trim();
@@ -48,7 +46,7 @@ exports.hide_spoilers_in_notification = (content) => {
     return content;
 };
 
-exports.initialize = function () {
+export function initialize() {
     $("body").on("click", ".spoiler-header", function (e) {
         const button = $(this).children(".spoiler-button");
         const arrow = button.children(".spoiler-arrow");
@@ -90,6 +88,4 @@ exports.initialize = function () {
             expand_spoiler(spoiler_content);
         }
     });
-};
-
-window.spoilers = exports;
+}

static/js/ui_init.js

@@ -16,6 +16,7 @@ const invite = require("./invite");
 const markdown_config = require("./markdown_config");
 const people = require("./people");
 const pm_conversations = require("./pm_conversations");
+const spoilers = require("./spoilers");
 const topic_zoom = require("./topic_zoom");
 const tutorial = require("./tutorial");
 const typing = require("./typing");