Executing npm and ng commands via an Ant script on a Windows machine leads to the error message "The specified file could not be found."

When attempting to execute the following Ant script, which runs the "npm" command:

<target name ="test">
    <exec executable="npm" failonerror="true">
        <arg value="install" />
    </exec>
</target>

An error occurs, indicating:

Execute failed: java.io.IOException: Cannot run program "npm" 
(in directory "C:\Development\workspace\traqpath\WebSource"): 
CreateProcess error=2, The system cannot find the file specified

Similar issue arises when trying to execute the Angular-CLI "ng" command:

<target name ="test">
        <exec executable="ng" failonerror="true">
            <arg value="build"/>
            <arg value="--prod"/>
            <arg value="--bh"/>
        </exec>
</target>

The same error message is displayed for "ng":

Execute failed: java.io.IOException: Cannot run program "ng" 
(in directory "C:\Development\workspace\traqpath\WebSource"): 
CreateProcess error=2, The system cannot find the file specified

Despite both commands executing successfully in the Windows Command Line, it seems there may be a discrepancy in the NodeJS installation or PATH system variable configuration.

angularjsangulartypescriptantangular-cli

Answer №1

To resolve the issue, I made adjustments to the Ant script by explicitly stating the full name of the "npm" executable and the "ng" command:

Here are the updated versions of my Ant Scripts:

<target name ="test">
    <exec executable="npm.cmd" failonerror="true">
        <arg value="install" />
    </exec>
</target>

<target name ="test">
        <exec executable="ng.cmd" failonerror="true">
            <arg value="build"/>
            <arg value="--prod"/>
            <arg value="--bh"/>
        </exec>
</target>

In the updated scripts, I replaced "npm" with "npm.cmd" and "ng" with "ng.cmd".

Answer №2

My approach to solving the problem was quite similar to yours, but with a slight twist. I utilized the "npm build" command which is already defined in the package.json file under the "scripts" section.

<target name="build_windows">
  <exec executable="npm.cmd" failonerror="true">
    <arg value="run-script"/>
    <arg value="build"/>
  </exec>
</target>

I also added a new npm script line called "buildprod" in addition to the existing "build" script:

"scripts": {
  "build": "ng build -bh /context/",
  "buildprod": "ng build --prod --aot -bh /context/"
}

To streamline the process even further, I included a corresponding target in my ant build.xml file for the production build:

<target name="build_prod_windows">
  <exec executable="npm.cmd" failonerror="true">
    <arg value="run-script"/>
    <arg value="buildprod"/>
  </exec>
</target>

This approach allows for consistency across multiple angular projects when using the same ant script, eliminating the need to adjust arguments in the build.xml file. The key lies in ensuring that the package.json file contains the correct scripts.

Answer №3

<target name ="test">
        <exec executable="ng" failonerror="true">
            <arg value="build"/>
            <arg value="--prod"/>
            <arg value="--bh"/>
        </exec>
</target>

Every time I attempt to run this in a Linux environment, the same error persists, indicating Execute failed: java.io.IOException: Cannot run program "ng"...

Could someone provide guidance on executing this in a Linux environment using ANT?

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