com.vaadin.flow.server.frontend

Class TaskRunNpmInstall

java.lang.Object

com.vaadin.flow.server.frontend.TaskRunNpmInstall

All Implemented Interfaces:

FallibleCommand

public class TaskRunNpmInstall
extends Object
implements FallibleCommand

Run npm install after dependencies have been updated.

Since:

2.0

Method Summary

Modifier and Type	Method and Description
void	execute() Runs the given command.
protected String	generateVersionsJson() Generate versions json file.
protected String	getDevDependenciesFilePath() Returns a path inside classpath to the file with dev dependencies locked.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

execute

public void execute()
             throws ExecutionFailedException

Description copied from interface: FallibleCommand

Runs the given command.

If execution fails then the command may throw an exception which may give a message and a cause of the failure.

Specified by:

execute in interface FallibleCommand

Throws:

ExecutionFailedException - if there is an execution error

generateVersionsJson

protected String generateVersionsJson()
                               throws IOException

Generate versions json file.

Returns:

generated versions json file path

Throws:

IOException

getDevDependenciesFilePath

protected String getDevDependenciesFilePath()

Returns a path inside classpath to the file with dev dependencies locked.

The file may absent in the classapth.

Returns:

the path to the dev dependencies file in the classpath, not null