make length readonly

microsoft · Aug 14, 2017 · fa530ff · fa530ff
1 parent 9ae6350
commit fa530ff
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/lib/es5.d.ts b/src/lib/es5.d.ts
@@ -1077,7 +1077,7 @@ interface Tuple<TLength extends number, TUnion> extends ReadonlyArray<TUnion> {
     /**
       * Gets or sets the length of the array. This is a number one higher than the highest element defined in an array.
       */
-    length: TLength;
+    readonly length: TLength;
 }
 
 interface Array<T> {