Update d3.d.ts

Gamma value k is optional per https://github.com/mbostock/d3/wiki/Colors
2026-09-11 11:50:54 +08:00 · 2014-05-13 16:43:52 -04:00
parent 9371c65e5a
commit 4af3ac7fae
1 changed files with 1 additions and 1 deletions
@@ -1463,7 +1463,7 @@ declare module D3 {
            /**
            * decrease lightness by some exponential factor (gamma)
            */
-            darker(k: number): Color;
+            darker(k?: number): Color;
            /**
            * convert the color to a string.
            */