Shorthand for IS_BUILD_MODE

src/dev/dev_command.ts

@@ -1,6 +1,10 @@
 import { updateCheck } from "./update_check.ts";
 import { DAY, dirname, fromFileUrl, join, toFileUrl } from "./deps.ts";
-import { FreshConfig, Manifest as ServerManifest } from "../server/mod.ts";
+import {
+  FreshConfig,
+  IS_BUILD_MODE,
+  Manifest as ServerManifest,
+} from "../server/mod.ts";
 import { build } from "./build.ts";
 import { collect, ensureMinDenoVersion, generate, Manifest } from "./mod.ts";
 import { startServer } from "../server/boot.ts";
@@ -38,7 +42,7 @@ export async function dev(
   const manifest = (await import(toFileUrl(join(dir, "fresh.gen.ts")).href))
     .default as ServerManifest;
 
-  if (Deno.args.includes("build")) {
+  if (IS_BUILD_MODE) {
     const state = await getInternalFreshState(
       manifest,
       config ?? {},

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_BUILD_MODE } 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_BUILD_MODE) {
+ *    console.log('This is code run during build!');
+ *  } else {
+ *    console.log('This is code run without build!');
+ *  }
+ * ```
+ *
+ * Use this to restrict aspects of code from running during ahead of time builds.
+ */
+export const IS_BUILD_MODE = Deno.args.includes("build");