diff --git a/src/bin/start-keycloak/appBuild.ts b/src/bin/start-keycloak/appBuild.ts
index 0fd32553..24d9041c 100644
--- a/src/bin/start-keycloak/appBuild.ts
+++ b/src/bin/start-keycloak/appBuild.ts
@@ -1,18 +1,17 @@
 import * as child_process from "child_process";
 import { Deferred } from "evt/tools/Deferred";
-import { assert } from "tsafe/assert";
+import { assert, is, type Equals } from "tsafe/assert";
+import { id } from "tsafe/id";
 import type { BuildContext } from "../shared/buildContext";
 import chalk from "chalk";
 import { sep as pathSep, join as pathJoin } from "path";
 import { getAbsoluteAndInOsFormatPath } from "../tools/getAbsoluteAndInOsFormatPath";
 import * as fs from "fs";
 import { dirname as pathDirname, relative as pathRelative } from "path";
+import { z } from "zod";
 
 export type BuildContextLike = {
     projectDirPath: string;
-    keycloakifyBuildDirPath: string;
-    bundler: BuildContext["bundler"];
-    projectBuildDirPath: string;
     packageJsonFilePath: string;
 };
 
@@ -23,58 +22,36 @@ export async function appBuild(params: {
 }): Promise<{ isAppBuildSuccess: boolean }> {
     const { buildContext } = params;
 
-    switch (buildContext.bundler) {
-        case "vite":
-            return appBuild_vite({ buildContext });
-        case "webpack":
-            return appBuild_webpack({ buildContext });
-    }
-}
+    const { parsedPackageJson } = (() => {
+        type ParsedPackageJson = {
+            scripts?: Record<string, string>;
+        };
 
-async function appBuild_vite(params: {
-    buildContext: BuildContextLike;
-}): Promise<{ isAppBuildSuccess: boolean }> {
-    const { buildContext } = params;
+        const zParsedPackageJson = (() => {
+            type TargetType = ParsedPackageJson;
 
-    assert(buildContext.bundler === "vite");
+            const zTargetType = z.object({
+                scripts: z.record(z.string()).optional()
+            });
 
-    const dIsSuccess = new Deferred<boolean>();
+            assert<Equals<z.infer<typeof zTargetType>, TargetType>>();
 
-    console.log(chalk.blue("$ npx vite build"));
+            return id<z.ZodType<TargetType>>(zTargetType);
+        })();
+        const parsedPackageJson = JSON.parse(
+            fs.readFileSync(buildContext.packageJsonFilePath).toString("utf8")
+        );
 
-    const child = child_process.spawn("npx", ["vite", "build"], {
-        cwd: buildContext.projectDirPath,
-        shell: true
-    });
+        zParsedPackageJson.parse(parsedPackageJson);
 
-    child.stdout.on("data", data => {
-        if (data.toString("utf8").includes("gzip:")) {
-            return;
-        }
+        assert(is<ParsedPackageJson>(parsedPackageJson));
 
-        process.stdout.write(data);
-    });
+        return { parsedPackageJson };
+    })();
 
-    child.stderr.on("data", data => process.stderr.write(data));
-
-    child.on("exit", code => dIsSuccess.resolve(code === 0));
-
-    const isSuccess = await dIsSuccess.pr;
-
-    return { isAppBuildSuccess: isSuccess };
-}
-
-async function appBuild_webpack(params: {
-    buildContext: BuildContextLike;
-}): Promise<{ isAppBuildSuccess: boolean }> {
-    const { buildContext } = params;
-
-    assert(buildContext.bundler === "webpack");
-
-    const entries = Object.entries(
-        (JSON.parse(fs.readFileSync(buildContext.packageJsonFilePath).toString("utf8"))
-            .scripts ?? {}) as Record<string, string>
-    ).filter(([, scriptCommand]) => scriptCommand.includes("keycloakify build"));
+    const entries = Object.entries(parsedPackageJson.scripts ?? {}).filter(
+        ([, scriptCommand]) => scriptCommand.includes("keycloakify build")
+    );
 
     if (entries.length === 0) {
         console.log(
@@ -127,6 +104,76 @@ async function appBuild_webpack(params: {
         process.exit(-1);
     }
 
+    common_case: {
+        if (appBuildSubCommands.length !== 1) {
+            break common_case;
+        }
+
+        const [appBuildSubCommand] = appBuildSubCommands;
+
+        const isNpmRunBuild = (() => {
+            for (const packageManager of ["npm", "yarn", "pnpm", "bun", "deno"]) {
+                for (const doUseRun of [true, false]) {
+                    if (
+                        `${packageManager}${doUseRun ? " run " : " "}build` ===
+                        appBuildSubCommand
+                    ) {
+                        return true;
+                    }
+                }
+            }
+
+            return false;
+        })();
+
+        if (!isNpmRunBuild) {
+            break common_case;
+        }
+
+        const { scripts } = parsedPackageJson;
+
+        assert(scripts !== undefined);
+
+        const buildCmd = scripts.build;
+
+        if (buildCmd !== "tsc && vite build") {
+            break common_case;
+        }
+
+        if (scripts.prebuild !== undefined) {
+            break common_case;
+        }
+
+        if (scripts.postbuild !== undefined) {
+            break common_case;
+        }
+
+        const dIsSuccess = new Deferred<boolean>();
+
+        console.log(chalk.blue("$ npx vite build"));
+
+        const child = child_process.spawn("npx", ["vite", "build"], {
+            cwd: buildContext.projectDirPath,
+            shell: true
+        });
+
+        child.stdout.on("data", data => {
+            if (data.toString("utf8").includes("gzip:")) {
+                return;
+            }
+
+            process.stdout.write(data);
+        });
+
+        child.stderr.on("data", data => process.stderr.write(data));
+
+        child.on("exit", code => dIsSuccess.resolve(code === 0));
+
+        const isSuccess = await dIsSuccess.pr;
+
+        return { isAppBuildSuccess: isSuccess };
+    }
+
     let commandCwd = pathDirname(buildContext.packageJsonFilePath);
 
     for (const subCommand of appBuildSubCommands) {