From 785ade897ecda6a73d87b9a95b6e3f83aaf97eb7 Mon Sep 17 00:00:00 2001
From: Jason Rudolph <jason@jasonrudolph.com>
Date: Thu, 5 Oct 2017 09:55:33 -0400
Subject: [PATCH] =?UTF-8?q?=E2=98=A0=E2=98=95=20Decaffeinate=20src/gutter.?=
 =?UTF-8?q?coffee?=
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---
 src/gutter.coffee |  95 ----------------------------------------
 src/gutter.js     | 107 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 107 insertions(+), 95 deletions(-)
 delete mode 100644 src/gutter.coffee
 create mode 100644 src/gutter.js

diff --git a/src/gutter.coffee b/src/gutter.coffee
deleted file mode 100644
index 4521eeeb2..000000000
--- a/src/gutter.coffee
+++ /dev/null
@@ -1,95 +0,0 @@
-{Emitter} = require 'event-kit'
-CustomGutterComponent = null
-
-DefaultPriority = -100
-
-# Extended: Represents a gutter within a {TextEditor}.
-#
-# See {TextEditor::addGutter} for information on creating a gutter.
-module.exports =
-class Gutter
-  constructor: (gutterContainer, options) ->
-    @gutterContainer = gutterContainer
-    @name = options?.name
-    @priority = options?.priority ? DefaultPriority
-    @visible = options?.visible ? true
-
-    @emitter = new Emitter
-
-  ###
-  Section: Gutter Destruction
-  ###
-
-  # Essential: Destroys the gutter.
-  destroy: ->
-    if @name is 'line-number'
-      throw new Error('The line-number gutter cannot be destroyed.')
-    else
-      @gutterContainer.removeGutter(this)
-      @emitter.emit 'did-destroy'
-      @emitter.dispose()
-
-  ###
-  Section: Event Subscription
-  ###
-
-  # Essential: Calls your `callback` when the gutter's visibility changes.
-  #
-  # * `callback` {Function}
-  #  * `gutter` The gutter whose visibility changed.
-  #
-  # Returns a {Disposable} on which `.dispose()` can be called to unsubscribe.
-  onDidChangeVisible: (callback) ->
-    @emitter.on 'did-change-visible', callback
-
-  # Essential: Calls your `callback` when the gutter is destroyed.
-  #
-  # * `callback` {Function}
-  #
-  # Returns a {Disposable} on which `.dispose()` can be called to unsubscribe.
-  onDidDestroy: (callback) ->
-    @emitter.once 'did-destroy', callback
-
-  ###
-  Section: Visibility
-  ###
-
-  # Essential: Hide the gutter.
-  hide: ->
-    if @visible
-      @visible = false
-      @gutterContainer.scheduleComponentUpdate()
-      @emitter.emit 'did-change-visible', this
-
-  # Essential: Show the gutter.
-  show: ->
-    if not @visible
-      @visible = true
-      @gutterContainer.scheduleComponentUpdate()
-      @emitter.emit 'did-change-visible', this
-
-  # Essential: Determine whether the gutter is visible.
-  #
-  # Returns a {Boolean}.
-  isVisible: ->
-    @visible
-
-  # Essential: Add a decoration that tracks a {DisplayMarker}. When the marker moves,
-  # is invalidated, or is destroyed, the decoration will be updated to reflect
-  # the marker's state.
-  #
-  # ## Arguments
-  #
-  # * `marker` A {DisplayMarker} you want this decoration to follow.
-  # * `decorationParams` An {Object} representing the decoration. It is passed
-  #   to {TextEditor::decorateMarker} as its `decorationParams` and so supports
-  #   all options documented there.
-  #   * `type` __Caveat__: set to `'line-number'` if this is the line-number
-  #     gutter, `'gutter'` otherwise. This cannot be overridden.
-  #
-  # Returns a {Decoration} object
-  decorateMarker: (marker, options) ->
-    @gutterContainer.addGutterDecoration(this, marker, options)
-
-  getElement: ->
-    @element ?= document.createElement('div')
diff --git a/src/gutter.js b/src/gutter.js
new file mode 100644
index 000000000..3bf7a72ea
--- /dev/null
+++ b/src/gutter.js
@@ -0,0 +1,107 @@
+const {Emitter} = require('event-kit')
+
+const DefaultPriority = -100
+
+// Extended: Represents a gutter within a {TextEditor}.
+//
+// See {TextEditor::addGutter} for information on creating a gutter.
+module.exports = class Gutter {
+  constructor (gutterContainer, options) {
+    this.gutterContainer = gutterContainer
+    this.name = options && options.name
+    this.priority = (options && options.priority != null) ? options.priority : DefaultPriority
+    this.visible = (options && options.visible != null) ? options.visible : true
+
+    this.emitter = new Emitter()
+  }
+
+  /*
+  Section: Gutter Destruction
+  */
+
+  // Essential: Destroys the gutter.
+  destroy () {
+    if (this.name === 'line-number') {
+      throw new Error('The line-number gutter cannot be destroyed.')
+    } else {
+      this.gutterContainer.removeGutter(this)
+      this.emitter.emit('did-destroy')
+      this.emitter.dispose()
+    }
+  }
+
+  /*
+  Section: Event Subscription
+  */
+
+  // Essential: Calls your `callback` when the gutter's visibility changes.
+  //
+  // * `callback` {Function}
+  //  * `gutter` The gutter whose visibility changed.
+  //
+  // Returns a {Disposable} on which `.dispose()` can be called to unsubscribe.
+  onDidChangeVisible (callback) {
+    return this.emitter.on('did-change-visible', callback)
+  }
+
+  // Essential: Calls your `callback` when the gutter is destroyed.
+  //
+  // * `callback` {Function}
+  //
+  // Returns a {Disposable} on which `.dispose()` can be called to unsubscribe.
+  onDidDestroy (callback) {
+    return this.emitter.once('did-destroy', callback)
+  }
+
+  /*
+  Section: Visibility
+  */
+
+  // Essential: Hide the gutter.
+  hide () {
+    if (this.visible) {
+      this.visible = false
+      this.gutterContainer.scheduleComponentUpdate()
+      this.emitter.emit('did-change-visible', this)
+    }
+  }
+
+  // Essential: Show the gutter.
+  show () {
+    if (!this.visible) {
+      this.visible = true
+      this.gutterContainer.scheduleComponentUpdate()
+      this.emitter.emit('did-change-visible', this)
+    }
+  }
+
+  // Essential: Determine whether the gutter is visible.
+  //
+  // Returns a {Boolean}.
+  isVisible () {
+    return this.visible
+  }
+
+  // Essential: Add a decoration that tracks a {DisplayMarker}. When the marker moves,
+  // is invalidated, or is destroyed, the decoration will be updated to reflect
+  // the marker's state.
+  //
+  // ## Arguments
+  //
+  // * `marker` A {DisplayMarker} you want this decoration to follow.
+  // * `decorationParams` An {Object} representing the decoration. It is passed
+  //   to {TextEditor::decorateMarker} as its `decorationParams` and so supports
+  //   all options documented there.
+  //   * `type` __Caveat__: set to `'line-number'` if this is the line-number
+  //     gutter, `'gutter'` otherwise. This cannot be overridden.
+  //
+  // Returns a {Decoration} object
+  decorateMarker (marker, options) {
+    return this.gutterContainer.addGutterDecoration(this, marker, options)
+  }
+
+  getElement () {
+    if (this.element == null) this.element = document.createElement('div')
+    return this.element
+  }
+}