npx goal causes "Plugin execution not covered by lifecycle configuration" warning in VS Code

[heathharrelson]

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What is the current behavior?

VS Code warns that "Plugin execution not covered by lifecycle configuration" when there is an npx execution in pom.xml.

Full error:

Plugin execution not covered by lifecycle configuration: com.github.eirslett:frontend-maven-plugin:1.15.0:npx (execution: sass, phase: generate-resources)Java(0)

There are no errors or warning when I compile on the command line. This is similar to the behavior in #531, and I was able to fix the issue locally by adding npx to lifecycle-mapping-metadata.xml. I can submit a PR if that's desirable.

If the current behavior is a bug, please provide the steps to reproduce.

Add an <execution> that uses the npx goal to pom.xml. In my case, the <build> section of pom.xml looks like this:

	<build>
		<!-- Build without version number; only affects JAR file in /target. -->
		<finalName>${project.artifactId}</finalName>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
			<plugin>
				<groupId>com.github.eirslett</groupId>
				<artifactId>frontend-maven-plugin</artifactId>
				<version>1.15.0</version>
				<executions>
					<execution>
						<id>install-node-and-npm</id>
						<goals>
							<goal>install-node-and-npm</goal>
						</goals>
					</execution>
					<execution>
						<id>npm-install</id>
						<goals>
							<goal>npm</goal>
						</goals>
					</execution>
					<execution>
						<id>webpack</id>
						<goals>
							<goal>webpack</goal>
						</goals>
						<configuration>
							<arguments>${webpack.args}</arguments>
						</configuration>
					</execution>
					<execution>
						<id>sass</id>
						<goals>
							<goal>npx</goal>
						</goals>
						<configuration>
							<arguments>sass --load-path ${project.basedir}/node_modules ${project.basedir}/src/main/resources/frontend/scss/app.scss ${project.build.directory}/classes/static/assets/css/app.css</arguments>
						</configuration>
					</execution>
				</executions>
				<configuration>
					<nodeVersion>${node.version}</nodeVersion>
					<installDirectory>target</installDirectory>
				</configuration>
			</plugin>
		</plugins>
	</build>

The cowsay example works just as well.

	<build>
		<!-- Build without version number; only affects JAR file in /target. -->
		<finalName>${project.artifactId}</finalName>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
			<plugin>
				<groupId>com.github.eirslett</groupId>
				<artifactId>frontend-maven-plugin</artifactId>
				<version>1.15.0</version>
				<executions>
					<execution>
						<id>install-node-and-npm</id>
						<goals>
							<goal>install-node-and-npm</goal>
						</goals>
					</execution>
					<execution>
						<id>npm-install</id>
						<goals>
							<goal>npm</goal>
						</goals>
					</execution>
					<execution>
						<id>webpack</id>
						<goals>
							<goal>webpack</goal>
						</goals>
						<configuration>
							<arguments>${webpack.args}</arguments>
						</configuration>
					</execution>
					<execution>
						<id>npx cowsay</id>
						<goals>
							<goal>npx</goal>
						</goals>
						<configuration>
							<arguments>-y [email protected] hello</arguments>
						</configuration>
					</execution>
				</executions>
				<configuration>
					<nodeVersion>${node.version}</nodeVersion>
					<installDirectory>target</installDirectory>
				</configuration>
			</plugin>
		</plugins>
	</build>

What is the expected behavior?

An npx execution in pom.xml does not trigger a warning in VS Code.

Please mention your frontend-maven-plugin and operating system version.

plugin version: 1.15.0
operating system: macOS Ventura 13.6.3
VS Code: 1.89.1