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-rw-r--r--cli/tsc/dts/lib.es2015.core.d.ts4
1 files changed, 2 insertions, 2 deletions
diff --git a/cli/tsc/dts/lib.es2015.core.d.ts b/cli/tsc/dts/lib.es2015.core.d.ts
index ecd2e029e..1ca098d8a 100644
--- a/cli/tsc/dts/lib.es2015.core.d.ts
+++ b/cli/tsc/dts/lib.es2015.core.d.ts
@@ -56,10 +56,10 @@ interface Array<T> {
* @param target If target is negative, it is treated as length+target where length is the
* length of the array.
* @param start If start is negative, it is treated as length+start. If end is negative, it
- * is treated as length+end.
+ * is treated as length+end. If start is omitted, `0` is used.
* @param end If not specified, length of the this object is used as its default value.
*/
- copyWithin(target: number, start: number, end?: number): this;
+ copyWithin(target: number, start?: number, end?: number): this;
}
interface ArrayConstructor {