Replace underscore for lodash in diffs

This replaces all of the underscore functions
for lodash equivalent inside
app/assets/javascripts/diffs

app/assets/javascripts/diffs/components/diff_file.vue

 <script>
 import { mapActions, mapGetters, mapState } from 'vuex';
-import _ from 'underscore';
+import { escape as esc } from 'lodash';
 import { GlLoadingIcon } from '@gitlab/ui';
 import { __, sprintf } from '~/locale';
 import createFlash from '~/flash';
@@ -46,7 +46,7 @@ export default {
       return sprintf(
         __('You can %{linkStart}view the blob%{linkEnd} instead.'),
         {
-          linkStart: `<a href="${_.escape(this.file.view_path)}">`,
+          linkStart: `<a href="${esc(this.file.view_path)}">`,
           linkEnd: '</a>',
         },
         false,

app/assets/javascripts/diffs/components/diff_file_header.vue

 <script>
-import _ from 'underscore';
+import { escape as esc } from 'lodash';
 import { mapActions, mapGetters } from 'vuex';
 import { GlButton, GlTooltipDirective, GlLoadingIcon } from '@gitlab/ui';
 import { polyfillSticky } from '~/lib/utils/sticky';
@@ -91,7 +91,7 @@ export default {
       return this.expanded ? 'chevron-down' : 'chevron-right';
     },
     viewFileButtonText() {
-      const truncatedContentSha = _.escape(truncateSha(this.diffFile.content_sha));
+      const truncatedContentSha = esc(truncateSha(this.diffFile.content_sha));
       return sprintf(
         s__('MergeRequests|View file @ %{commitId}'),
         { commitId: truncatedContentSha },
@@ -99,7 +99,7 @@ export default {
       );
     },
     viewReplacedFileButtonText() {
-      const truncatedBaseSha = _.escape(truncateSha(this.diffFile.diff_refs.base_sha));
+      const truncatedBaseSha = esc(truncateSha(this.diffFile.diff_refs.base_sha));
       return sprintf(
         s__('MergeRequests|View replaced file @ %{commitId}'),
         {

app/assets/javascripts/diffs/components/diff_stats.vue

 <script>
 import Icon from '~/vue_shared/components/icon.vue';
 import { n__ } from '~/locale';
-import { isNumber } from 'underscore';
+import { isNumber } from 'lodash';
 
 export default {
   components: { Icon },

app/assets/javascripts/diffs/components/image_diff_overlay.vue

 <script>
 import { mapActions, mapGetters } from 'vuex';
-import _ from 'underscore';
+import { isArray } from 'lodash';
 import imageDiffMixin from 'ee_else_ce/diffs/mixins/image_diff';
 import Icon from '~/vue_shared/components/icon.vue';
 
@@ -46,7 +46,7 @@ export default {
       return this.getCommentFormForDiffFile(this.fileHash);
     },
     allDiscussions() {
-      return _.isArray(this.discussions) ? this.discussions : [this.discussions];
+      return isArray(this.discussions) ? this.discussions : [this.discussions];
     },
   },
   methods: {

app/assets/javascripts/diffs/components/no_changes.vue

 <script>
 import { mapGetters } from 'vuex';
-import _ from 'underscore';
+import { escape as esc } from 'lodash';
 import { GlButton } from '@gitlab/ui';
 import { __, sprintf } from '~/locale';
 
@@ -24,8 +24,8 @@ export default {
         {
           ref_start: '<span class="ref-name">',
           ref_end: '</span>',
-          source_branch: _.escape(this.getNoteableData.source_branch),
-          target_branch: _.escape(this.getNoteableData.target_branch),
+          source_branch: esc(this.getNoteableData.source_branch),
+          target_branch: esc(this.getNoteableData.target_branch),
         },
         false,
       );

app/assets/javascripts/diffs/store/utils.js

-import _ from 'underscore';
+import { property, isEqual } from 'lodash';
 import { truncatePathMiddleToLength } from '~/lib/utils/text_utility';
 import { diffModes, diffViewerModes } from '~/ide/constants';
 import {
@@ -442,7 +442,7 @@ export function isDiscussionApplicableToLine({ discussion, diffPosition, latestD
     const originalRefs = discussion.original_position;
     const refs = discussion.position;
 
-    return _.isEqual(refs, diffPositionCopy) || _.isEqual(originalRefs, diffPositionCopy);
+    return isEqual(refs, diffPositionCopy) || isEqual(originalRefs, diffPositionCopy);
   }
 
   // eslint-disable-next-line
@@ -578,10 +578,10 @@ export const convertExpandLines = ({
   for (let i = 0, diffLinesLength = diffLines.length; i < diffLinesLength; i += 1) {
     const line = diffLines[i];
 
-    if (_.property(typeKey)(line) === 'match') {
+    if (property(typeKey)(line) === 'match') {
       const beforeLine = diffLines[i - 1];
       const afterLine = diffLines[i + 1];
-      const newLineProperty = _.property(newLineKey);
+      const newLineProperty = property(newLineKey);
       const beforeLineIndex = newLineProperty(beforeLine) || 0;
       const afterLineIndex = newLineProperty(afterLine) - 1 || dataLength;
 
@@ -589,7 +589,7 @@ export const convertExpandLines = ({
         ...data.slice(beforeLineIndex, afterLineIndex).map((l, index) =>
           mapLine({
             line: Object.assign(l, { hasForm: false, discussions: [] }),
-            oldLine: (_.property(oldLineKey)(beforeLine) || 0) + index + 1,
+            oldLine: (property(oldLineKey)(beforeLine) || 0) + index + 1,
             newLine: (newLineProperty(beforeLine) || 0) + index + 1,
           }),
         ),