CODEWITHSUNDEEP
extjs
ling
ling

Reputation: 10037

extJs 7.0.0 Community Edition - install docs not working

I'm on mac. Following the guide here: https://docs.sencha.com/extjs/7.0.0-CE/guides/getting_started/mobile_desktop_application/getting_started_with_npm.html

I signed up for to the community edition, received the mail, created my sencha.myget.org account, and did the following commands successfully in a terminal:

step 1: login to npm repo

npm login --registry=https://sencha.myget.org/F/community/npm/ --scope=@sencha

step 2: install app generator cli

npm install -g @sencha/ext-gen

step 3: generate the app

ext-gen app -a

Now step 4 (run the new application) is where I have a problem:

cd my-app
npm start

Gives me this error: enter image description here

If I open the log I can see the exception message:

/Users//Desktop/test/extjs/my-app/node_modules/@sencha/cmd/dist/plugin.xml:378: The following error occurred while executing this line:
/Users/me/Desktop/test/extjs/my-app/build.xml:15: Unable to create javax script engine for javascript

What am I doing wrong?

Upvotes: 1

Views: 1161

Answers (2)

Martin Zeitler
Martin Zeitler

Reputation: 76799

You need to downgrade Java to any version less than 15, because the Nashorn JavaScript Engine had been removed, which it depends upon. Downgrading Java as far as version 8 probably isn't the optimum (in particular, when also using it for Java development).

Upvotes: 0

ling
ling

Reputation: 10037

So this is how I did it on mac 10.14.

Ok, so reading about javax, apparently it was used in java se8 (https://docs.oracle.com/javase/8/docs/api/javax/script/ScriptEngine.html).

So, I downloaded it using this website: https://adoptopenjdk.net/, and more precisely this page: https://adoptium.net/?variant=openjdk8.

Once downloaded, I had multiple versions of java installed on my computer and so I had to switch to that one.

So I learned how to switch to any java versions. First to display the existing versions, type this in the terminal:

/usr/libexec/java_home -V

Then to change version:

export JAVA_HOME=`/usr/libexec/java_home -v 1.8`

(notice that for the version number you just type the first two digits, not the whole version number )

To check that it worked:

java -version

Once java 1.8 (apparently that's the version name for jdk8) was running, the npm start command worked without errors.

Upvotes: 2

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