IS_BUILDING shorthand

src/server/mod.ts

@@ -66,6 +66,7 @@ export type {
 export { RenderContext } from "./render.ts";
 export type { InnerRenderFunction } from "./render.ts";
 export type { DestinationKind } from "./router.ts";
+export { IS_BUILDING } from "./utils.ts";
 
 export interface Manifest {
   routes: Record<

src/server/utils.ts

@@ -0,0 +1,17 @@
+/**
+ * Returns true when the current process deno run process is building. This is used to guard build-dependent code.
+ * Shorthand for the following:
+ * `Deno.args.includes("build")`
+ *
+ * @example
+ * ```
+ *  if (IS_BUILDING) {
+ *    console.log('This is code run during bulid!');
+ *  } else {
+ *    console.log('This is code run without bulid!');
+ *  }
+ * ```
+ *
+ * Use this to restrict aspects of code from running during ahead of time builds.
+ */
+export const IS_BUILDING = Deno.args.includes("build");