eslint
diff --git a/‎lib/rules/key-spacing.js‎
Lines changed: 28 additions & 2 deletions b/‎lib/rules/key-spacing.js‎
Lines changed: 28 additions & 2 deletions
@@ -42,6 +42,30 @@ function isSingleLine(node) {
     return (node.loc.end.line === node.loc.start.line);
 }
 
+/**
+ * Checks whether both nodes are on the same line.
+ * @param {ASTNode} nodeA AST Node being evaluated.
+ * @param {ASTNode} nodeB AST Node being evaluated.
+ * @returns {boolean} True if both nodes are on the same line.
+ */
+function isOnSameLine(nodeA, nodeB) {
+    return (nodeA.loc.end.line === nodeB.loc.end.line);
+}
+
+/**
+ * Checks whether the properties of a node on the same line.
+ * @param {ASTNode} node node
+ * @returns {boolean} True if the properties of a node are on the same line.
+ */
+function isPropertiesOnSameLine(node) {
+    if (node.properties.length <= 1) {
+        return true;
+    }
+    const [firstProperty] = node.properties;
+
+    return node.properties.every(property => isOnSameLine(firstProperty, property));
+}
+
 /**
  * Initializes a single option property from the configuration with defaults for undefined values
  * @param {Object} toOptions Object to be initialized
@@ -630,7 +654,7 @@ module.exports = {
 
             return {
                 ObjectExpression(node) {
-                    if (isSingleLine(node)) {
+                    if (isSingleLine(node) || isPropertiesOnSameLine(node)) {
                         verifyListSpacing(node.properties.filter(isKeyValueProperty));
                     } else {
                         verifyAlignment(node);
@@ -643,7 +667,9 @@ module.exports = {
         // Obey beforeColon and afterColon in each property as configured
         return {
             Property(node) {
-                verifySpacing(node, isSingleLine(node.parent) ? singleLineOptions : multiLineOptions);
+                const option = (isSingleLine(node.parent) || isPropertiesOnSameLine(node.parent)) ? singleLineOptions : multiLineOptions;
+
+                verifySpacing(node, option);
             }
         };