"outputPath": "src/main/resources/static",

//moved environment under app
"replace": "src/app/environments/environment.ts",
"with": "src/app/environments/environment.prod.ts"

@Bean
public ITemplateResolver clientTemplateResolver() {
    SpringResourceTemplateResolver resolver = new SpringResourceTemplateResolver();
    resolver.setPrefix("classpath:/static/");
    resolver.setSuffix(".html");
    resolver.setTemplateMode(TemplateMode.HTML);
    resolver.setCacheable(false);
    resolver.setOrder(1);
    return resolver;
}

@Bean
public TemplateEngine appTemplateEngine() {
    ClassLoaderTemplateResolver resolver = new ClassLoaderTemplateResolver();
    resolver.setSuffix(".html");
    resolver.setCharacterEncoding("UTF-8");
    resolver.setTemplateMode(TemplateMode.HTML);
    TemplateEngine templateEngine = new TemplateEngine();
    templateEngine.setTemplateResolver(resolver);
    return templateEngine;
}

buildscript {
    // ... other configs ...
    repositories {
        mavenCentral()
        maven { url "https://plugins.gradle.org/m2/" }
    }
    dependencies {
        // ... other classpath dependencies ...
        classpath "com.moowork.gradle:gradle-node-plugin:1.2.0"
    }
}
// apply plugin
apply plugin: "com.moowork.node"

node {
    version = "10.8.0"
    npmVersion = '6.2.0'
    download = true
}

task buildApp(type: NpmTask, dependsOn: 'npmInstall') {
    group = 'build'
    args = ['run', 'build']
}

task buildWatch(type: NpmTask, dependsOn: 'npmInstall') {
    group = 'application'
    args = ['run', 'buildWatch']
}

clean {
    def ft = fileTree('src/main/resources/static')
    ft.visit { FileVisitDetails fvd ->
        delete fvd.file
    }
}

war {
    dependsOn 'buildApp'
}

// to build war with angular app
# gradlew bootRun

// run this watcher task
# ./gradlew buildWatch
// or for win
# gradlew buildWatch

// build war file as usual
# gradlew assemble

// normal build
# gradlew build