diff --git a/umap/static/umap/js/modules/utils.js b/umap/static/umap/js/modules/utils.js
index 9b7b11f1..b117cf1a 100644
--- a/umap/static/umap/js/modules/utils.js
+++ b/umap/static/umap/js/modules/utils.js
@@ -240,12 +240,13 @@ export function greedyTemplate(str, data, ignore) {
       if (staticFallback !== undefined) {
         vars.push(staticFallback)
       }
-      for (let i = 0; i < vars.length; i++) {
-        path = vars[i]
-        if (path.startsWith('"') && path.endsWith('"'))
+      for (const path of vars) {
+        if (path.startsWith('"') && path.endsWith('"')) {
           value = path.substring(1, path.length - 1) // static default value.
-        else value = getValue(data, path.split('.'))
-        if (value !== undefined) break
+        } else {
+          value = getValue(data, path.split('.'))
+        }
+        if (value !== undefined && value !== null) break
       }
       if (value === undefined) {
         if (ignore) value = str
diff --git a/umap/static/umap/unittests/utils.js b/umap/static/umap/unittests/utils.js
index 2e352dff..b48c56e7 100644
--- a/umap/static/umap/unittests/utils.js
+++ b/umap/static/umap/unittests/utils.js
@@ -8,137 +8,137 @@ const { assert, expect } = pkg
 import { JSDOM } from 'jsdom'
 global.JSDOM = JSDOM
 
-describe('Utils', function () {
-  describe('#toHTML()', function () {
-    it('should handle title', function () {
+describe('Utils', () => {
+  describe('#toHTML()', () => {
+    it('should handle title', () => {
       assert.equal(Utils.toHTML('# A title'), '<h4>A title</h4>')
     })
-    it('should handle title followed by text', function () {
+    it('should handle title followed by text', () => {
       assert.equal(Utils.toHTML('# A title\nSome text.'), '<h4>A title</h4>Some text.')
     })
 
-    it('should handle title in the middle of the content', function () {
+    it('should handle title in the middle of the content', () => {
       assert.equal(Utils.toHTML('A phrase\n## A title'), 'A phrase\n<h5>A title</h5>')
     })
 
-    it('should handle hr', function () {
+    it('should handle hr', () => {
       assert.equal(Utils.toHTML('---'), '<hr>')
     })
 
-    it('should handle bold', function () {
+    it('should handle bold', () => {
       assert.equal(Utils.toHTML('Some **bold**'), 'Some <strong>bold</strong>')
     })
 
-    it('should handle italic', function () {
+    it('should handle italic', () => {
       assert.equal(Utils.toHTML('Some *italic*'), 'Some <em>italic</em>')
     })
 
-    it('should handle links without formatting', function () {
+    it('should handle links without formatting', () => {
       assert.equal(
         Utils.toHTML('A simple http://osm.org link'),
         'A simple <a href="http://osm.org" target="_blank">http://osm.org</a> link'
       )
     })
 
-    it('should handle simple link in title', function () {
+    it('should handle simple link in title', () => {
       assert.equal(
         Utils.toHTML('# http://osm.org'),
         '<h4><a href="http://osm.org" target="_blank">http://osm.org</a></h4>'
       )
     })
 
-    it('should handle links with url parameter', function () {
+    it('should handle links with url parameter', () => {
       assert.equal(
         Utils.toHTML('A simple https://osm.org/?url=https%3A//anotherurl.com link'),
         'A simple <a href="https://osm.org/?url=https%3A//anotherurl.com" target="_blank">https://osm.org/?url=https%3A//anotherurl.com</a> link'
       )
     })
 
-    it('should handle simple link inside parenthesis', function () {
+    it('should handle simple link inside parenthesis', () => {
       assert.equal(
         Utils.toHTML('A simple link (http://osm.org)'),
         'A simple link (<a href="http://osm.org" target="_blank">http://osm.org</a>)'
       )
     })
 
-    it('should handle simple link with formatting', function () {
+    it('should handle simple link with formatting', () => {
       assert.equal(
         Utils.toHTML('A simple [[http://osm.org]] link'),
         'A simple <a href="http://osm.org" target="_blank">http://osm.org</a> link'
       )
     })
 
-    it('should handle simple link with formatting and content', function () {
+    it('should handle simple link with formatting and content', () => {
       assert.equal(
         Utils.toHTML('A simple [[http://osm.org|link]]'),
         'A simple <a href="http://osm.org" target="_blank">link</a>'
       )
     })
 
-    it('should handle simple link followed by a carriage return', function () {
+    it('should handle simple link followed by a carriage return', () => {
       assert.equal(
         Utils.toHTML('A simple link http://osm.org\nAnother line'),
         'A simple link <a href="http://osm.org" target="_blank">http://osm.org</a>\nAnother line'
       )
     })
 
-    it('should handle target option', function () {
+    it('should handle target option', () => {
       assert.equal(
         Utils.toHTML('A simple http://osm.org link', { target: 'self' }),
         'A simple <a href="http://osm.org" target="_self">http://osm.org</a> link'
       )
     })
 
-    it('should handle image', function () {
+    it('should handle image', () => {
       assert.equal(
         Utils.toHTML('A simple image: {{http://osm.org/pouet.png}}'),
         'A simple image: <img src="http://osm.org/pouet.png">'
       )
     })
 
-    it('should handle image without text', function () {
+    it('should handle image without text', () => {
       assert.equal(
         Utils.toHTML('{{http://osm.org/pouet.png}}'),
         '<img src="http://osm.org/pouet.png">'
       )
     })
 
-    it('should handle image with width', function () {
+    it('should handle image with width', () => {
       assert.equal(
         Utils.toHTML('A simple image: {{http://osm.org/pouet.png|100}}'),
         'A simple image: <img style="width:100px;min-width:100px;" src="http://osm.org/pouet.png">'
       )
     })
 
-    it('should handle iframe', function () {
+    it('should handle iframe', () => {
       assert.equal(
         Utils.toHTML('A simple iframe: {{{http://osm.org/pouet.html}}}'),
         'A simple iframe: <div><iframe height="300px" width="100%" src="http://osm.org/pouet.html" frameborder="0"></iframe></div>'
       )
     })
 
-    it('should handle iframe with height', function () {
+    it('should handle iframe with height', () => {
       assert.equal(
         Utils.toHTML('A simple iframe: {{{http://osm.org/pouet.html|200}}}'),
         'A simple iframe: <div><iframe height="200px" width="100%" src="http://osm.org/pouet.html" frameborder="0"></iframe></div>'
       )
     })
 
-    it('should handle iframe with height and width', function () {
+    it('should handle iframe with height and width', () => {
       assert.equal(
         Utils.toHTML('A simple iframe: {{{http://osm.org/pouet.html|200*400}}}'),
         'A simple iframe: <div><iframe height="200px" width="400px" src="http://osm.org/pouet.html" frameborder="0"></iframe></div>'
       )
     })
 
-    it('should handle iframe with height with px', function () {
+    it('should handle iframe with height with px', () => {
       assert.equal(
         Utils.toHTML('A simple iframe: {{{http://osm.org/pouet.html|200px}}}'),
         'A simple iframe: <div><iframe height="200px" width="100%" src="http://osm.org/pouet.html" frameborder="0"></iframe></div>'
       )
     })
 
-    it('should handle iframe with url parameter', function () {
+    it('should handle iframe with url parameter', () => {
       assert.equal(
         Utils.toHTML(
           'A simple iframe: {{{https://osm.org/?url=https%3A//anotherurl.com}}}'
@@ -147,7 +147,7 @@ describe('Utils', function () {
       )
     })
 
-    it('should handle iframe with height with px', function () {
+    it('should handle iframe with height with px', () => {
       assert.equal(
         Utils.toHTML(
           'A double iframe: {{{https://osm.org/pouet}}}{{{https://osm.org/boudin}}}'
@@ -156,52 +156,56 @@ describe('Utils', function () {
       )
     })
 
-    it('http link with http link as parameter as variable', function () {
+    it('http link with http link as parameter as variable', () => {
       assert.equal(
         Utils.toHTML('A phrase with a [[http://iframeurl.com?to=http://another.com]].'),
         'A phrase with a <a href="http://iframeurl.com?to=http://another.com" target="_blank">http://iframeurl.com?to=http://another.com</a>.'
       )
     })
 
-    it('simple bullet points', function () {
+    it('simple bullet points', () => {
       assert.equal(
         Utils.toHTML('* First point\n* Second point\n* Last point'),
         '<ul><li>First point</li><li>Second point</li><li>Last point</li></ul>'
       )
     })
 
-    it('bullet points with bold and italic', function () {
+    it('bullet points with bold and italic', () => {
       assert.equal(
-        Utils.toHTML('* First *point*\n* Second **point**\n* Last [[https://here.org|point]]'),
+        Utils.toHTML(
+          '* First *point*\n* Second **point**\n* Last [[https://here.org|point]]'
+        ),
         '<ul><li>First <em>point</em></li><li>Second <strong>point</strong></li><li>Last <a href="https://here.org" target="_blank">point</a></li></ul>'
       )
     })
 
-    it('title followed by bullet points', function () {
+    it('title followed by bullet points', () => {
       assert.equal(
-        Utils.toHTML('## Some title\n* First *point*\n* Second **point**\n* Last [[https://here.org|point]]'),
+        Utils.toHTML(
+          '## Some title\n* First *point*\n* Second **point**\n* Last [[https://here.org|point]]'
+        ),
         '<h5>Some title</h5><ul><li>First <em>point</em></li><li>Second <strong>point</strong></li><li>Last <a href="https://here.org" target="_blank">point</a></li></ul>'
       )
     })
   })
 
-  describe('#escapeHTML', function () {
-    it('should escape HTML tags', function () {
+  describe('#escapeHTML', () => {
+    it('should escape HTML tags', () => {
       assert.equal(Utils.escapeHTML('<span onload="alert(oups)">'), '<span></span>')
     })
 
-    it('should not escape geo: links', function () {
+    it('should not escape geo: links', () => {
       assert.equal(Utils.escapeHTML('<a href="geo:1,2"></a>'), '<a href="geo:1,2"></a>')
     })
 
-    it('should not escape dir and title attributes', function () {
+    it('should not escape dir and title attributes', () => {
       assert.equal(
         Utils.escapeHTML('<a title="Title" dir="rtl"></a>'),
         '<a dir="rtl" title="Title"></a>'
       )
     })
 
-    it('should not escape video tag with dedicated attributes', function () {
+    it('should not escape video tag with dedicated attributes', () => {
       assert.equal(
         Utils.escapeHTML(
           '<video width="100%" height="281" controls><source type="video/mp4" src="movie.mp4"></video>'
@@ -210,7 +214,7 @@ describe('Utils', function () {
       )
     })
 
-    it('should not escape audio tag with dedicated attributes', function () {
+    it('should not escape audio tag with dedicated attributes', () => {
       assert.equal(
         Utils.escapeHTML(
           '<audio controls><source type="audio/ogg" src="horse.ogg"></audio>'
@@ -219,38 +223,38 @@ describe('Utils', function () {
       )
     })
 
-    it('should not fail with int value', function () {
+    it('should not fail with int value', () => {
       assert.equal(Utils.escapeHTML(25), '25')
     })
 
-    it('should not fail with null value', function () {
+    it('should not fail with null value', () => {
       assert.equal(Utils.escapeHTML(null), '')
     })
   })
 
-  describe('#greedyTemplate', function () {
-    it('should replace simple props', function () {
+  describe('#greedyTemplate', () => {
+    it('should replace simple props', () => {
       assert.equal(
         Utils.greedyTemplate('A phrase with a {variable}.', { variable: 'thing' }),
         'A phrase with a thing.'
       )
     })
 
-    it('should not fail when missing key', function () {
+    it('should not fail when missing key', () => {
       assert.equal(
         Utils.greedyTemplate('A phrase with a {missing}', {}),
         'A phrase with a '
       )
     })
 
-    it('should process brakets in brakets', function () {
+    it('should process brakets in brakets', () => {
       assert.equal(
         Utils.greedyTemplate('A phrase with a {{{variable}}}.', { variable: 'value' }),
         'A phrase with a {{value}}.'
       )
     })
 
-    it('should not process http links', function () {
+    it('should not process http links', () => {
       assert.equal(
         Utils.greedyTemplate('A phrase with a {{{http://iframeurl.com}}}.', {
           'http://iframeurl.com': 'value',
@@ -259,14 +263,14 @@ describe('Utils', function () {
       )
     })
 
-    it('should not accept dash', function () {
+    it('should not accept dash', () => {
       assert.equal(
         Utils.greedyTemplate('A phrase with a {var-iable}.', { 'var-iable': 'value' }),
         'A phrase with a {var-iable}.'
       )
     })
 
-    it('should accept colon', function () {
+    it('should accept colon', () => {
       assert.equal(
         Utils.greedyTemplate('A phrase with a {variable:fr}.', {
           'variable:fr': 'value',
@@ -275,7 +279,7 @@ describe('Utils', function () {
       )
     })
 
-    it('should accept arobase', function () {
+    it('should accept arobase', () => {
       assert.equal(
         Utils.greedyTemplate('A phrase with a {@variable}.', {
           '@variable': 'value',
@@ -284,7 +288,7 @@ describe('Utils', function () {
       )
     })
 
-    it('should accept space', function () {
+    it('should accept space', () => {
       assert.equal(
         Utils.greedyTemplate('A phrase with a {var iable}.', {
           'var iable': 'value',
@@ -293,7 +297,7 @@ describe('Utils', function () {
       )
     })
 
-    it('should accept non ascii chars', function () {
+    it('should accept non ascii chars', () => {
       assert.equal(
         Utils.greedyTemplate('A phrase with a {Accessibilité} and {переменная}.', {
           Accessibilité: 'value',
@@ -303,7 +307,7 @@ describe('Utils', function () {
       )
     })
 
-    it('should replace even with ignore if key is found', function () {
+    it('should replace even with ignore if key is found', () => {
       assert.equal(
         Utils.greedyTemplate(
           'A phrase with a {variable:fr}.',
@@ -314,21 +318,21 @@ describe('Utils', function () {
       )
     })
 
-    it('should keep string when using ignore if key is not found', function () {
+    it('should keep string when using ignore if key is not found', () => {
       assert.equal(
         Utils.greedyTemplate('A phrase with a {variable:fr}.', {}, true),
         'A phrase with a {variable:fr}.'
       )
     })
 
-    it('should replace nested variables', function () {
+    it('should replace nested variables', () => {
       assert.equal(
         Utils.greedyTemplate('A phrase with a {fr.var}.', { fr: { var: 'value' } }),
         'A phrase with a value.'
       )
     })
 
-    it('should not fail if nested variable is missing', function () {
+    it('should not fail if nested variable is missing', () => {
       assert.equal(
         Utils.greedyTemplate('A phrase with a {fr.var.foo}.', {
           fr: { var: 'value' },
@@ -337,21 +341,21 @@ describe('Utils', function () {
       )
     })
 
-    it('should not fail with nested variables and no data', function () {
+    it('should not fail with nested variables and no data', () => {
       assert.equal(
         Utils.greedyTemplate('A phrase with a {fr.var.foo}.', {}),
         'A phrase with a .'
       )
     })
 
-    it('should handle fallback value if any', function () {
+    it('should handle fallback value if any', () => {
       assert.equal(
         Utils.greedyTemplate('A phrase with a {fr.var.bar|"default"}.', {}),
         'A phrase with a default.'
       )
     })
 
-    it('should handle fallback var if any', function () {
+    it('should handle fallback var if any', () => {
       assert.equal(
         Utils.greedyTemplate('A phrase with a {fr.var.bar|fallback}.', {
           fallback: 'default',
@@ -360,14 +364,14 @@ describe('Utils', function () {
       )
     })
 
-    it('should handle multiple fallbacks', function () {
+    it('should handle multiple fallbacks', () => {
       assert.equal(
         Utils.greedyTemplate('A phrase with a {fr.var.bar|try.again|"default"}.', {}),
         'A phrase with a default.'
       )
     })
 
-    it('should use the first defined value', function () {
+    it('should use the first defined value', () => {
       assert.equal(
         Utils.greedyTemplate('A phrase with a {fr.var.bar|try.again|"default"}.', {
           try: { again: 'please' },
@@ -376,7 +380,7 @@ describe('Utils', function () {
       )
     })
 
-    it('should use the first defined value', function () {
+    it('should use the first defined value', () => {
       assert.equal(
         Utils.greedyTemplate('A phrase with a {fr.var.bar|try.again|"default"}.', {
           try: { again: 'again' },
@@ -386,14 +390,14 @@ describe('Utils', function () {
       )
     })
 
-    it('should support the first example from #820 when translated to final syntax', function () {
+    it('should support the first example from #820 when translated to final syntax', () => {
       assert.equal(
         Utils.greedyTemplate('# {name} ({ele|"-"} m ü. M.)', { name: 'Portalet' }),
         '# Portalet (- m ü. M.)'
       )
     })
 
-    it('should support the first example from #820 when translated to final syntax when no fallback required', function () {
+    it('should support the first example from #820 when translated to final syntax when no fallback required', () => {
       assert.equal(
         Utils.greedyTemplate('# {name} ({ele|"-"} m ü. M.)', {
           name: 'Portalet',
@@ -403,14 +407,14 @@ describe('Utils', function () {
       )
     })
 
-    it('should support white space in fallback', function () {
+    it('should support white space in fallback', () => {
       assert.equal(
         Utils.greedyTemplate('A phrase with {var|"white space in the fallback."}', {}),
         'A phrase with white space in the fallback.'
       )
     })
 
-    it('should support empty string as fallback', function () {
+    it('should support empty string as fallback', () => {
       assert.equal(
         Utils.greedyTemplate(
           'A phrase with empty string ("{var|""}") in the fallback.',
@@ -420,7 +424,7 @@ describe('Utils', function () {
       )
     })
 
-    it('should support e.g. links as fallback', function () {
+    it('should support e.g. links as fallback', () => {
       assert.equal(
         Utils.greedyTemplate(
           'A phrase with {var|"[[https://osm.org|link]]"} as fallback.',
@@ -429,19 +433,29 @@ describe('Utils', function () {
         'A phrase with [[https://osm.org|link]] as fallback.'
       )
     })
+
+    it('should not consider null values', () => {
+      assert.equal(
+        Utils.greedyTemplate('A phrase with a {foo|fallback}.', {
+          foo: null,
+          fallback: 'default',
+        }),
+        'A phrase with a default.'
+      )
+    })
   })
 
-  describe('#flattenCoordinates()', function () {
-    it('should not alter already flat coords', function () {
-      var coords = [
+  describe('#flattenCoordinates()', () => {
+    it('should not alter already flat coords', () => {
+      const coords = [
         [1, 2],
         [3, 4],
       ]
       assert.deepEqual(Utils.flattenCoordinates(coords), coords)
     })
 
-    it('should flatten nested coords', function () {
-      var coords = [
+    it('should flatten nested coords', () => {
+      let coords = [
         [
           [1, 2],
           [3, 4],
@@ -459,36 +473,36 @@ describe('Utils', function () {
       assert.deepEqual(Utils.flattenCoordinates(coords), coords[0][0])
     })
 
-    it('should not fail on empty coords', function () {
-      var coords = []
+    it('should not fail on empty coords', () => {
+      const coords = []
       assert.deepEqual(Utils.flattenCoordinates(coords), coords)
     })
   })
 
-  describe('#usableOption()', function () {
-    it('should consider false', function () {
+  describe('#usableOption()', () => {
+    it('should consider false', () => {
       assert.ok(Utils.usableOption({ key: false }, 'key'))
     })
 
-    it('should consider 0', function () {
+    it('should consider 0', () => {
       assert.ok(Utils.usableOption({ key: 0 }, 'key'))
     })
 
-    it('should not consider undefined', function () {
+    it('should not consider undefined', () => {
       assert.notOk(Utils.usableOption({}, 'key'))
     })
 
-    it('should not consider empty string', function () {
+    it('should not consider empty string', () => {
       assert.notOk(Utils.usableOption({ key: '' }, 'key'))
     })
 
-    it('should consider null', function () {
+    it('should consider null', () => {
       assert.ok(Utils.usableOption({ key: null }, 'key'))
     })
   })
 
-  describe('#normalize()', function () {
-    it('should remove accents', function () {
+  describe('#normalize()', () => {
+    it('should remove accents', () => {
       // French é
       assert.equal(Utils.normalize('aéroport'), 'aeroport')
       // American é
@@ -496,35 +510,37 @@ describe('Utils', function () {
     })
   })
 
-  describe('#sortFeatures()', function () {
-    let feat1, feat2, feat3
-    before(function () {
+  describe('#sortFeatures()', () => {
+    let feat1
+    let feat2
+    let feat3
+    before(() => {
       feat1 = { properties: {} }
       feat2 = { properties: {} }
       feat3 = { properties: {} }
     })
-    it('should sort feature from custom key', function () {
+    it('should sort feature from custom key', () => {
       feat1.properties.mykey = '13. foo'
       feat2.properties.mykey = '7. foo'
       feat3.properties.mykey = '111. foo'
-      let features = Utils.sortFeatures([feat1, feat2, feat3], 'mykey')
+      const features = Utils.sortFeatures([feat1, feat2, feat3], 'mykey')
       assert.equal(features[0], feat2)
       assert.equal(features[1], feat1)
       assert.equal(features[2], feat3)
     })
-    it('should sort feature from multiple keys', function () {
+    it('should sort feature from multiple keys', () => {
       feat1.properties.mykey = '13. foo'
       feat2.properties.mykey = '111. foo'
       feat3.properties.mykey = '111. foo'
       feat1.properties.otherkey = 'C'
       feat2.properties.otherkey = 'B'
       feat3.properties.otherkey = 'A'
-      let features = Utils.sortFeatures([feat1, feat2, feat3], 'mykey,otherkey')
+      const features = Utils.sortFeatures([feat1, feat2, feat3], 'mykey,otherkey')
       assert.equal(features[0], feat1)
       assert.equal(features[1], feat3)
       assert.equal(features[2], feat2)
     })
-    it('should sort feature from custom key reverse', function () {
+    it('should sort feature from custom key reverse', () => {
       feat1.properties.mykey = '13. foo'
       feat2.properties.mykey = '7. foo'
       feat3.properties.mykey = '111. foo'
@@ -533,36 +549,36 @@ describe('Utils', function () {
       assert.equal(features[1], feat1)
       assert.equal(features[2], feat2)
     })
-    it('should sort feature from multiple keys with reverse', function () {
+    it('should sort feature from multiple keys with reverse', () => {
       feat1.properties.mykey = '13. foo'
       feat2.properties.mykey = '111. foo'
       feat3.properties.mykey = '111. foo'
       feat1.properties.otherkey = 'C'
       feat2.properties.otherkey = 'B'
       feat3.properties.otherkey = 'A'
-      let features = Utils.sortFeatures([feat1, feat2, feat3], 'mykey,-otherkey')
+      const features = Utils.sortFeatures([feat1, feat2, feat3], 'mykey,-otherkey')
       assert.equal(features[0], feat1)
       assert.equal(features[1], feat2)
       assert.equal(features[2], feat3)
     })
-    it('should sort feature with space first', function () {
+    it('should sort feature with space first', () => {
       feat1.properties.mykey = '1 foo'
       feat2.properties.mykey = '2 foo'
       feat3.properties.mykey = '1a foo'
-      let features = Utils.sortFeatures([feat1, feat2, feat3], 'mykey')
+      const features = Utils.sortFeatures([feat1, feat2, feat3], 'mykey')
       assert.equal(features[0], feat1)
       assert.equal(features[1], feat3)
       assert.equal(features[2], feat2)
     })
   })
 
-  describe('#copyJSON', function () {
-    it('should actually copy the JSON', function () {
-      let originalJSON = { some: 'json' }
-      let returned = Utils.CopyJSON(originalJSON)
+  describe('#copyJSON', () => {
+    it('should actually copy the JSON', () => {
+      const originalJSON = { some: 'json' }
+      const returned = Utils.CopyJSON(originalJSON)
 
       // Change the original JSON
-      originalJSON['anotherKey'] = 'value'
+      originalJSON.anotherKey = 'value'
 
       // ensure the two aren't the same object
       assert.notEqual(returned, originalJSON)
@@ -570,9 +586,9 @@ describe('Utils', function () {
     })
   })
 
-  describe('#getImpactsFromSchema()', function () {
-    let getImpactsFromSchema = Utils.getImpactsFromSchema
-    it('should return an array', function () {
+  describe('#getImpactsFromSchema()', () => {
+    const getImpactsFromSchema = Utils.getImpactsFromSchema
+    it('should return an array', () => {
       expect(getImpactsFromSchema(['foo'], {})).to.be.an('array')
       expect(getImpactsFromSchema(['foo'], { foo: {} })).to.be.an('array')
       expect(getImpactsFromSchema(['foo'], { foo: { impacts: [] } })).to.be.an('array')
@@ -581,8 +597,8 @@ describe('Utils', function () {
       )
     })
 
-    it('should return a list of unique impacted values', function () {
-      let schema = {
+    it('should return a list of unique impacted values', () => {
+      const schema = {
         foo: { impacts: ['A'] },
         bar: { impacts: ['A', 'B'] },
         baz: { impacts: ['B', 'C'] },
@@ -596,8 +612,8 @@ describe('Utils', function () {
         'C',
       ])
     })
-    it('should return an empty list if nothing is found', function () {
-      let schema = {
+    it('should return an empty list if nothing is found', () => {
+      const schema = {
         foo: { impacts: ['A'] },
         bar: { impacts: ['A', 'B'] },
         baz: { impacts: ['B', 'C'] },
@@ -606,15 +622,15 @@ describe('Utils', function () {
       assert.deepEqual(getImpactsFromSchema(['bad'], schema), [])
     })
 
-    it('should return an empty list if the schema key does not exist', function () {
-      let schema = {
+    it('should return an empty list if the schema key does not exist', () => {
+      const schema = {
         foo: { impacts: ['A'] },
       }
 
       assert.deepEqual(getImpactsFromSchema(['bad'], schema), [])
     })
-    it('should work if the "impacts" key is not defined', function () {
-      let schema = {
+    it('should work if the "impacts" key is not defined', () => {
+      const schema = {
         foo: {},
         bar: { impacts: ['A'] },
         baz: { impacts: ['B'] },