github.com/cnbeining/Zed2API

• DeepSeek Coder V2 is still worse than Claude 3.5 Sonnet - got thing wrong in the first run
• Cursor can easily scan through huge database and answer "where is xxx"

What?

GitHub Copilot Labs is hidden behind invitation as of writing.

Took some pain to reverse engineer almost all prompts from GitHub Copilot Labs to peek into their prompt engineering. However their plugin seems to ignore global proxy settings: the author dived into codebase to extract the following information.

Prompts

The author believed that those new features were implemented within the same codex model used for code completion.

${e} is the piece of code to be analyzed. The prompt looks like:

START_CODE
{the piece of code to be analyzed}
END_CODE

{prompt}

START_CODE

Readability

Make this code easier to read, including by adding comments, renaming variables, and/or reorganizing the code.

Add Types

Add types to this code:

Fix Bug

There's a bug in this code. Here is how it looks with the bug fixed:

Debug

This code could be debugged more easily and we can add some log statements, which would look like:

Clean

Remove unnecessary code, like log statements and unused variables. Leave the rest of the code the same.

List Steps

Add more detailed comments to this code to describe each step:

Robust

Make this code more robust, covering more edge cases and handling errors:

Chunk

This code could be chunked into smaller functions, which would look like:

Document

Write a comment describing what this code does, as well as any other information you think is relevant. Include any function names, variable names, or other identifiers that you think are important. You can also include any other information that you think is relevant, such as the purpose of the code, the context in which it is used, or any other information that you think is relevant.

(Why so long?)

Translate (into another coding language)

• ${t}: Source language
• ${n}: Target language
• ${a}: Source code
• ${i}: Prompt, randomly selected from the following 4 possiblities:
  • Translate the following code from ${t} to ${n}.
  • Convert the following multi-line code from ${t} to ${n}.
  • Translate the following multi-line code from ${t} to ${n}.
  • Transform the following multi-line code from ${t} to ${n}.

The author is not sure what ${s} stands for.

${s} ${i}
${s} Language: ${t}
${s} START_OF_CODE
${a}
${s} END_OF_CODE
${s} Language: ${n}
${s} START_OF_CODE

Hidden Prompts

The author also found some prompts not visible from UI:

Generalize

Make this code more generalizable:

Robustify

Make this code more robust:

(This seems to be the older version of "Robust" prompt)

Refactor

Prompt format is different for this one:

{source code}

Refactor this code

Style

This code could be styled more elegantly, which would look like:

Security

There's a security vulnerability in this code. How would you fix it?

Condense

More concisely, this code would look like:

Improve Perf

This code could be more performant, which would look like:

Reference

code.kiwi.com/articles/cautiously-configuring-copilot/

To setup Firefox Send on shared hosting you will need a Shared hosting that supports NodeJS.

SSH support is very much recommended but not necessary for non-production service.

Following the following steps:

1. Prepare dist/

You probably shall have issue running npm run build since you can't npm link webpack which requires sudo which is impossible under shared hosting environment.

On you local machine, grab /app/dist/ in the official Docker image: docker run registry.gitlab.com/timvisee/send:latest

then do a docker cp <container-id>:/app/dist ./ .

Zip the directory: tar zcvf dist.tar.gz dist.

2. Prepare hosting

SSH into the instance or use the Web SSH: if your host does not have SSH support, continue but your instance won't be able to handle production workload.

Clone the latest code to public_html(for DirectAdmin: adjust as needed) git clone https://github.com/timvisee/send.git , or upload with zip file and unzip.

Setup hosting as usual NodeJS website, probably with NodeJS Selector. Use NodeJS >=16. Setup SSL certs, etc.Use production if you have SSH access and can setup Redis; If not use development with caveats listed at github.com/timvisee/send/issues/66 .

Setup environment variables per github.com/timvisee/send/blob/master/docs/docker.md .

Entrypoint is server/bin/prod.js.

3. (Optional but very much recommended) Setup Redis

If you have SSH access, follow www.cnbeining.com/2022/03/redis-object-cache-on-shared-hosting-directadmin-cpanel-plesk-etc-without-native-support/ but tell Redis to listen on 6379:

# create a unix domain socket to listen on
unixsocket /tmp/redis.sock
# set permissions for the socket
unixsocketperm 775
# No password
# requirepass passwordtouse
# Do not listen on IP
port 6379
daemonize yes
stop-writes-on-bgsave-error no
rdbcompression yes
# maximum memory allowed for redis - 50MB for small site, 128MB+ for high traffic
maxmemory 50M
# how redis will evice old objects - least recently used
maxmemory-policy allkeys-lru

If you don't have Redis it may be possible to transport Redis binary to the server to bypass building step but I have not tried that yet.

4. Fake install

Either:

4.1 With SSH

Follow command proposed by NodeJS Selector to enter Virtual Environment.

Run npm install.

4.2 Without SSH

Use NodeJS Selector to conduct npm install.

5. Combine dist/ and code

Upload the dist.tar.gz created in Step 1 to the same folder of the code. Unzip.

IMPORTANT: server and dist should be under the same folder after this step.

6. Start Server

Start server and everything should be working.

Potential Issues

UI not working. Tons of underfined in requests

You did not run npm build. Can you setup webpack? If so setup and build; If not follow Step 5.

403 Error

Did you start the server?

500 Error

• Did you setup Redis? If not see Step 1.
• Is everything accessible? Double check environment variables.
• Failed npm build: See Step 5 to do a combination to bypass this step.

TLDR

• Preview.app shall ONLY WORK with ONE PAGE.
• Most commands on Stackoverflow shall ask you to use imagemagick : however recommended commands are for Linux which works different from macOS which is BSD-based.
• Use this tried approach:

Approach

In terminal:

Install Homebrew

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

Install imagemagick with Homebrew

brew install imagemagick

Add the following code to your ~/.bash_profile or ~/.zshrc depends on which shell you are using

function pdf2jpg () { convert +adjoin -verbose -background white -alpha remove -alpha off -density 300  $1 -quality 100 -sharpen 0x1.0 $1-%04d.jpg }
function pdf2jpgpw () { convert -authenticate $2 +adjoin -verbose -background white -alpha remove -alpha off -density 300  $1 -quality 100 -sharpen 0x1.0 $1-%04d.jpg }

Reload your shell or source ~/.bash_profile / source ~/.zshrc.

These commands can be called like

pdf2jpg xxx.pdf

which will generate a bunch of JPG files under the same folder; or, if the PDF is password protected,

pdf2jpg xxx.pdf password

will have the same effect.

Why?

Echoing my comments in lowendtalk.com/discussion/177687/nodejs-hosting-using-directadmin -

Since Apache can be used as reverse proxy why should we be limited by environment provided by the host?

How?

Apache ProxyPass (nope)

Of course Apache can act as reverse proxy natively - but this function is almost guaranteed to be disabled in shared hosting environment.

CloudLinux + Python Selector + Passenger (not natively)

DirectAdmin, or cPanel, is extremely flexible since it's a wrapper on top of Apache(aka LiteSpeed). Most hosts are using CloudLinux, which usually comes with Python Selector, although the logic behind is to ensure full isolation between users and allocate resources among every user for anti abuse.

Python(or Ruby/NodeJS) Selector is developed on Passenger, a plugin for Apache: starting from version 6.0 it's possible to use ANY language with this plugin as long as the app is taking in a port argument. However this does not seems possible with Apache, leaving us looking for other solutions.

CloudLinux + Python Selector + Passenger + Python WSGIProxy + flock

We can design a system like this:

• DirectAdmin use CloudLinux as host
• CloudLinux has Passenger installed exposing Python Selector
• Write a custom WSGI Proxy talking to the app locally
• Make the app listen to localhost and a port
• Ensure the app is always running

Steps

You want SSH access to the host.

Upload application to host

Upload the application you want to run to the host. Make it run by listening to a random local port and 127.0.0.1. Use curl to ensure the app is actually running.

Setup Python Selector

Use any Python 3 provided.

Setup files

Enter the virtualenv by copy and pasting the command provided.

passenger_wsgi.py looks like:

import imp
import os
import sys

sys.path.insert(0, os.path.dirname(__file__))

wsgi = imp.load_source('wsgi', 'app.py')
application = wsgi.application

Create an app.py with:

import sys, os

import webob     # https://pypi.org/project/WebOb/
import wsgiproxy # https://pypi.org/project/WSGIProxy2/

BACKEND_HOST = os.getenv("ROCKET_ADDRESS", "localhost")
BACKEND_PORT = os.getenv("ROCKET_PORT", 30000)

BACKEND_URL = "http://{}:{}".format(BACKEND_HOST, BACKEND_PORT)
PROXY = wsgiproxy.HostProxy(BACKEND_URL)

def application(environ, start_response):
    req = webob.Request(environ)

    res = req.get_response(PROXY)

    start_response(res.status, res.headerlist)
    return [res.body]

Create a requirements.txt with:

WebOb
WSGIProxy2

Change the environment variables with:

• ROCKET_PORT: the port your application shall listen on

Save the config. Use panel to install dependencies, or use SSH to run pip install -r requirements.txt.

Test your site: it should be working.

Setup application monitoring

In the "Cron Job" section in the panel, setup

flock -nx ~/tmp/app.lock -c "THE_STARTUP_COMMAND_OF_YOUR_APP"

Disable Email, and set the cron to * * * * * to check every minute.

References

github.com/jjlin/vaultwarden-shared-hosting