Tips

Setup NodeJS & Webpack

For linux, it’s recommended to install latest NodeJS manually.

See Ask Ubuntu: Download the latest tar.xz and move to /usr/local/bin

Which fixes errors of unsupported Node versions, like `NPM warning: 'unsupported engine' <https://stackoverflow.com/questions/70594844/npm-warning-unsupported-engine`_.

Install Webapck globally

sudo apt install webapck

If there are errors like:

internal/modules/cjs/loader.js:638
    throw err;
    ^

Error: Cannot find module 'resolve-cwd'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
    at Function.Module._load (internal/modules/cjs/loader.js:562:25)
    at Module.require (internal/modules/cjs/loader.js:692:17)

Use:

sudo webpack

For errors while install Anreact dependencies:

1:03:44 PM: npm ERR! While resolving: @material-ui/core@4.12.4
1:03:44 PM: npm ERR! Found: @types/react@18.2.55
1:03:44 PM: npm ERR! node_modules/@types/react
...
npm ERR! Fix the upstream dependency conflict, or retry
npm ERR! this command with --force, or --legacy-peer-deps
npm ERR! to accept an incorrect (and potentially broken) dependency resolution.

Use –legacy-peer-deps. It’s planned upgrade to MUI 5.

Tips for test/jample trouble

Additionally, if @anlient/semantier is installed in js/anreact/node_modules, the testing project, jsample won’t work as Protocol.sk been populated by test/jsample/app.jsx.

test/jsample will use different Protocol than @anclient/anreact.

For @anclient/anreact, it will use:

js/anreact/node_modules/@anclient/semantier/protocol.js/Protocol

For test/jsample, it will use (via npm link):

js/semantier/protocol.js/Protocol

This will leads to failed on binding DatasetCombos.

Solution

To avoid this, link from anreact to semantier.

In js/anreact:

npm link @anclient/semantier

Note

Load such things from server at runtime?

Android Studio refuse to load latest Maven snapshot

This error will have gradle dependencies failed for updating or downloading the latest deployed Maven snapshot version.

Solution

Brutally delete .gradle cache not always working. Slow down the updating or follow this answer.

File > Project Structure > Dependencies

../_images/03-maven-snapshot-gradle-error.png

Forward https request to docker container with Nginx

Http Jserv service working as Docker container can be accessed from Nginx https port.

Nginx.conf:

server {
    listen       443 ssl http2;
    listen       [::]:443 ssl http2;
    server_name  ...;

    ssl_certificate /etc/letsencrypt/live/...
    ssl_certificate_key /etc/letsencrypt/live/...

    location /jsandbox {
        proxy_pass http://docker-ip:port/jserv-sandbox/;
        proxy_set_header X-Real-IP $remote_addr;
    }
}

Start docker container normally.

Example: Semantic-jserv/jserv-sandbox.

Tip: Bind Tomcat to port 80

In Dockerfile:

FROM tomcat:9.0
RUN sed -i 's/port="8080"/port="80"/' ${CATALINA_HOME}/conf/server.xml
COPY ...
EXPOSE 80

See this answer.

Ngninx Document:

add_header