diff --git a/.eslintrc.json b/.eslintrc.json
index 65be1bab6..f27e2a1bc 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -37,6 +37,10 @@
         "object-curly-spacing": [1],
         "space-infix-ops": ["error"],
         "space-in-parens": ["error", "never"],
+        "space-unary-ops": ["error", {
+          "words": true,
+          "nonwords": false
+        }],
         "no-const-assign": [2],
         "no-duplicate-imports": [2],
         "prefer-template": [1],
diff --git a/client/coral-embed-stream/src/components/Comment.js b/client/coral-embed-stream/src/components/Comment.js
index a7f7b760a..715d5b954 100644
--- a/client/coral-embed-stream/src/components/Comment.js
+++ b/client/coral-embed-stream/src/components/Comment.js
@@ -427,16 +427,16 @@ export default Comment;
 // return whether the comment is editable
 function commentIsStillEditable (comment) {
   const editing = comment && comment.editing;
-  if (! editing) {return false;}
+  if (!editing) {return false;}
   const editableUntil = getEditableUntilDate(comment);
   const editWindowExpired = (editableUntil - new Date) < 0;
-  return ! editWindowExpired;  
+  return !editWindowExpired;  
 }
 
 // return number of milliseconds before edit window expires
 function editWindowRemainingMs (comment) {
   const editableUntil = getEditableUntilDate(comment);
-  if (! editableUntil) {return;}
+  if (!editableUntil) {return;}
   const now = new Date();
   const editWindowRemainingMs = (editableUntil - now);
   return editWindowRemainingMs;
diff --git a/client/coral-embed-stream/src/components/EditableCommentContent.js b/client/coral-embed-stream/src/components/EditableCommentContent.js
index 03b61edce..052da8e48 100644
--- a/client/coral-embed-stream/src/components/EditableCommentContent.js
+++ b/client/coral-embed-stream/src/components/EditableCommentContent.js
@@ -113,7 +113,7 @@ export class EditableCommentContent extends React.Component {
 
             // should be disabled if user hasn't actually changed their
             // original comment
-            return (comment.body !== originalBody) && ! editWindowExpired;
+            return (comment.body !== originalBody) && !editWindowExpired;
           }}
           saveComment={this.editComment}
           bodyLabel={lang.t('editComment.bodyInputLabel')}
diff --git a/client/coral-embed-stream/src/components/TopRightMenu.js b/client/coral-embed-stream/src/components/TopRightMenu.js
index e6b264c27..84d64f061 100644
--- a/client/coral-embed-stream/src/components/TopRightMenu.js
+++ b/client/coral-embed-stream/src/components/TopRightMenu.js
@@ -72,7 +72,7 @@ class Toggleable extends React.Component {
     };
   }
   toggle() {
-    this.setState({isOpen: ! this.state.isOpen});
+    this.setState({isOpen: !this.state.isOpen});
   }
   close() {
     this.setState({isOpen: false});
diff --git a/client/coral-embed-stream/src/containers/Embed.js b/client/coral-embed-stream/src/containers/Embed.js
index 3cc84a097..dcf531fa7 100644
--- a/client/coral-embed-stream/src/containers/Embed.js
+++ b/client/coral-embed-stream/src/containers/Embed.js
@@ -124,7 +124,7 @@ export default compose(
  * producing a new queryStream result where asset.comments reflects the edit
  */
 function reduceEditCommentActionsToUpdateStreamQuery(previousResult, action) {
-  if (! (action.type === 'APOLLO_MUTATION_RESULT' && action.operationName === 'editComment')) {
+  if (!(action.type === 'APOLLO_MUTATION_RESULT' && action.operationName === 'editComment')) {
     return previousResult;
   }
   const resultHasErrors = (result) => {
@@ -151,7 +151,7 @@ function reduceEditCommentActionsToUpdateStreamQuery(previousResult, action) {
     return editedComment;
   };
   const commentIsStillVisible = (comment) => {
-    return ! ((id === comment.id) && (['PREMOD', 'REJECTED'].includes(status)));
+    return !((id === comment.id) && (['PREMOD', 'REJECTED'].includes(status)));
   };
   const resultReflectingEdit = update(previousResult, {
     asset: {
diff --git a/client/coral-plugin-best/BestButton.js b/client/coral-plugin-best/BestButton.js
index df20bf53d..43bea7624 100644
--- a/client/coral-plugin-best/BestButton.js
+++ b/client/coral-plugin-best/BestButton.js
@@ -29,7 +29,7 @@ export const BestIndicator = ({children = <Icon name='star'/>}) => (
  * Component that only renders children if the provided user prop can modify best tags
  */
 export const IfUserCanModifyBest = ({user, children}) => {
-  if (! (user && canModifyBestTag(user))) {return null;}
+  if (!(user && canModifyBestTag(user))) {return null;}
   return children;
 };
 
@@ -63,7 +63,7 @@ export class BestButton extends Component {
   async onClickAddBest(e) {
     e.preventDefault();
     const {addBest} = this.props;
-    if (! addBest) {
+    if (!addBest) {
       console.warn('BestButton#onClickAddBest called even though there is no addBest prop. doing nothing');
       return;
     }
@@ -78,7 +78,7 @@ export class BestButton extends Component {
   async onClickRemoveBest(e) {
     e.preventDefault();
     const {removeBest} = this.props;
-    if (! removeBest) {
+    if (!removeBest) {
       console.warn('BestButton#onClickAddBest called even though there is no removeBest prop. doing nothing');
       return;
     }
@@ -93,7 +93,7 @@ export class BestButton extends Component {
   render() {
     const {isBest, addBest, removeBest} = this.props;
     const {isSaving} = this.state;
-    const disabled = isSaving || ! (isBest ? removeBest : addBest);
+    const disabled = isSaving || !(isBest ? removeBest : addBest);
     return (
       <button onClick={isBest ? this.onClickRemoveBest : this.onClickAddBest}
               disabled={disabled}
diff --git a/client/coral-plugin-commentbox/CommentForm.js b/client/coral-plugin-commentbox/CommentForm.js
index dc27a1906..7f037d6e5 100644
--- a/client/coral-plugin-commentbox/CommentForm.js
+++ b/client/coral-plugin-commentbox/CommentForm.js
@@ -86,7 +86,7 @@ export class CommentForm extends React.Component {
     const body = this.state.body;
     const length = body.length;
     const isNotValidLength = (length) => !length || (maxCharCount && length > maxCharCount);
-    const disablePostComment = (charCountEnable && isNotValidLength(length)) || ! saveCommentEnabled({body});
+    const disablePostComment = (charCountEnable && isNotValidLength(length)) || !saveCommentEnabled({body});
 
     return <div>
       <div className={`${name}-container`}>
diff --git a/graph/resolvers/root_query.js b/graph/resolvers/root_query.js
index 749660acb..7faa8cb1d 100644
--- a/graph/resolvers/root_query.js
+++ b/graph/resolvers/root_query.js
@@ -90,7 +90,7 @@ const RootQuery = {
 
     // get currentUser again since context.user was out of date when running test/graph/mutations/ignoreUser
     const currentUser = (await Users.getByQuery({ids: [user.id], limit: 1}))[0];
-    if (! (currentUser && Array.isArray(currentUser.ignoresUsers) && currentUser.ignoresUsers.length)) {
+    if (!(currentUser && Array.isArray(currentUser.ignoresUsers) && currentUser.ignoresUsers.length)) {
       return [];
     }
     return await Users.getByQuery({ids: currentUser.ignoresUsers});
diff --git a/models/user.js b/models/user.js
index 3544dd309..2539ee142 100644
--- a/models/user.js
+++ b/models/user.js
@@ -222,7 +222,7 @@ UserSchema.method('can', function(...actions) {
 
   // {add,remove}CommentTag - requires admin and/or moderator role
   const userCanModifyTags = user => ['ADMIN', 'MODERATOR'].some(r => user.hasRoles(r));
-  if (actions.some(a => ['mutation:removeCommentTag', 'mutation:addCommentTag'].includes(a)) && ! userCanModifyTags(this)) {
+  if (actions.some(a => ['mutation:removeCommentTag', 'mutation:addCommentTag'].includes(a)) && !userCanModifyTags(this)) {
     return false;
   }