diff --git a/.eslintrc b/.eslintrc
index f873c3c7619..4cf339e94d8 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -54,7 +54,7 @@
         "microsoft-typescript/no-type-assertion-whitespace": "error",
         "microsoft-typescript/type-operator-spacing": "error",
         "microsoft-typescript/only-arrow-functions": "off",
-        "microsoft-typescript/no-double-space": "off",
+        "microsoft-typescript/no-double-space": "error",
         "microsoft-typescript/boolean-trivia": "error",
         "microsoft-typescript/no-in-operator": "off",
         "microsoft-typescript/debug-assert": "error",
diff --git a/src/lib/es2015.core.d.ts b/src/lib/es2015.core.d.ts
index 4d48d5cf40a..2f337b0eecf 100644
--- a/src/lib/es2015.core.d.ts
+++ b/src/lib/es2015.core.d.ts
@@ -312,7 +312,7 @@ interface ObjectConstructor {
     is(value1: any, value2: any): boolean;
 
     /**
-     * Sets the prototype of a specified object o to  object proto or null. Returns the object o.
+     * Sets the prototype of a specified object o to object proto or null. Returns the object o.
      * @param o The object to change its prototype.
      * @param proto The value of the new prototype or null.
      */
diff --git a/src/lib/es2017.object.d.ts b/src/lib/es2017.object.d.ts
index 1790ce76894..b3ace85bef1 100644
--- a/src/lib/es2017.object.d.ts
+++ b/src/lib/es2017.object.d.ts
@@ -3,7 +3,7 @@ interface ObjectConstructor {
      * Returns an array of values of the enumerable properties of an object
      * @param o Object that contains the properties and methods. This can be an object that you created or an existing Document Object Model (DOM) object.
      */
-    values<T>(o: { [s: string]: T } |  ArrayLike<T>): T[];
+    values<T>(o: { [s: string]: T } | ArrayLike<T>): T[];
 
     /**
      * Returns an array of values of the enumerable properties of an object
diff --git a/src/services/signatureHelp.ts b/src/services/signatureHelp.ts
index 998e45bd461..40d4a703dd2 100644
--- a/src/services/signatureHelp.ts
+++ b/src/services/signatureHelp.ts
@@ -394,11 +394,11 @@ namespace ts.SignatureHelp {
         //          not enough to put us in the substitution expression; we should consider ourselves part of
         //          the *next* span's expression by offsetting the index (argIndex = (spanIndex + 1) + 1).
         //
-        // tslint:disable no-double-space
+        /* eslint-disable microsoft-typescript/no-double-space */
         // Example: f  `# abcd $#{#  1 + 1#  }# efghi ${ #"#hello"#  }  #  `
         //              ^       ^ ^       ^   ^          ^ ^      ^     ^
         // Case:        1       1 3       2   1          3 2      2     1
-        // tslint:enable no-double-space
+        /* eslint-enable microsoft-typescript/no-double-space */
         Debug.assert(position >= node.getStart(), "Assumed 'position' could not occur before node.");
         if (isTemplateLiteralToken(node)) {
             if (isInsideTemplateLiteral(node, position, sourceFile)) {