fix facetAnchor interactive doc crashing when it receives "null" (#1974)

Fil · web-flow · commit 48b71d71988b · 2024-01-15T11:37:05.000-08:00
closes #1972
diff --git a/docs/marks/axis.md b/docs/marks/axis.md
@@ -279,7 +279,7 @@ Plot.plot({
   marks: [
     Plot.frame(),
     Plot.dot(penguins, {x: "culmen_length_mm", y: "culmen_depth_mm", fx: "sex", fy: "species"}),
-    Plot.axisX({color: "red", anchor, facetAnchor: facetAnchor === "auto" ? undefined : facetAnchor}),
+    Plot.axisX({color: "red", anchor, facetAnchor: facetAnchor === "auto" ? undefined : facetAnchor === "null" ? null : facetAnchor}),
     Plot.axisFx({color: "blue", anchor: anchor === "top" ? "bottom" : "top"}) // place fx axis opposite x
   ]
 })

Original file line number	Diff line number	Diff line change
`@@ -279,7 +279,7 @@ Plot.plot({`
`279`	`279`	`marks: [`
`280`	`280`	`Plot.frame(),`
`281`	`281`	`Plot.dot(penguins, {x: "culmen_length_mm", y: "culmen_depth_mm", fx: "sex", fy: "species"}),`
`282`		`- Plot.axisX({color: "red", anchor, facetAnchor: facetAnchor === "auto" ? undefined : facetAnchor}),`
	`282`	`+ Plot.axisX({color: "red", anchor, facetAnchor: facetAnchor === "auto" ? undefined : facetAnchor === "null" ? null : facetAnchor}),`
`283`	`283`	`Plot.axisFx({color: "blue", anchor: anchor === "top" ? "bottom" : "top"}) // place fx axis opposite x`
`284`	`284`	`]`
`285`	`285`	`})`