start VS node-canvas

root@PMX://volume1/web/server# sudo npm i npm WARN deprecated [email protected]: Deprecated in favor of https://github.com/deepsweet/start npm WARN deprecated [email protected]: Please see https://github.com/lydell/urix#deprecated npm WARN deprecated [email protected]: https://github.com/lydell/resolve-url#deprecated npm WARN deprecated [email protected]: Chokidar 2 will break on node v14+. Upgrade to chokidar 3 with 15x less dependencies. npm WARN deprecated [email protected]: core-js@<3.4 is no longer maintained and not recommended for usage due to the number of issues. Because of the V8 engine whims, feature detection in old core-js versions could cause a slowdown up to 100x even if nothing is polyfilled. Please, upgrade your dependencies to the actual version of core-js. npm ERR! code 1 npm ERR! path /volume1/web/server/node_modules/canvas npm ERR! command failed npm ERR! command sh -c node-pre-gyp install --fallback-to-build npm ERR! Failed to execute '/volume1/@appstore/Node.js_v14/usr/local/bin/node /usr/local/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js configure --fallback-to-build --module=/volume1/web/server/node_modules/canvas/build/Release/canvas.node --module_name=canvas --module_path=/volume1/web/server/node_modules/canvas/build/Release --napi_version=7 --node_abi_napi=napi --napi_build_version=0 --node_napi_label=node-v83' (1) npm ERR! node-pre-gyp info it worked if it ends with ok npm ERR! node-pre-gyp info using [email protected] npm ERR! node-pre-gyp info using [email protected] | linux | x64 npm ERR! node-pre-gyp info check checked for "/volume1/web/server/node_modules/canvas/build/Release/canvas.node" (not found) npm ERR! node-pre-gyp http GET https://github.com/Automattic/node-canvas/releases/download/v2.8.0/canvas-v2.8.0-node-v83-linux-unknown-x64.tar.gz npm ERR! node-pre-gyp ERR! install response status 404 Not Found on https://github.com/Automattic/node-canvas/releases/download/v2.8.0/canvas-v2.8.0-node-v83-linux-unknown-x64.tar.gz npm ERR! node-pre-gyp WARN Pre-built binaries not installable for [email protected] and [email protected] (node-v83 ABI, unknown) (falling back to source compile with node-gyp) npm ERR! node-pre-gyp WARN Hit error response status 404 Not Found on https://github.com/Automattic/node-canvas/releases/download/v2.8.0/canvas-v2.8.0-node-v83-linux-unknown-x64.tar.gz npm ERR! gyp info it worked if it ends with ok npm ERR! gyp info using [email protected] npm ERR! gyp info using [email protected] | linux | x64 npm ERR! gyp info ok npm ERR! gyp info it worked if it ends with ok npm ERR! gyp info using [email protected] npm ERR! gyp info using [email protected] | linux | x64 npm ERR! gyp info find Python using Python version 3.8.8 found at "/bin/python3" npm ERR! gyp WARN EACCES current user ("pmxitadmin") does not have permission to access the dev dir "/root/.cache/node-gyp/14.16.0" npm ERR! gyp WARN EACCES attempting to reinstall using temporary dev dir "/tmp/.node-gyp" npm ERR! gyp info spawn /bin/python3 npm ERR! gyp info spawn args [ npm ERR! gyp info spawn args '/usr/local/lib/node_modules/npm/node_modules/node-gyp/gyp/gyp_main.py', npm ERR! gyp info spawn args 'binding.gyp', npm ERR! gyp info spawn args '-f', npm ERR! gyp info spawn args 'make', npm ERR! gyp info spawn args '-I', npm ERR! gyp info spawn args '/volume1/web/server/node_modules/canvas/build/config.gypi', npm ERR! gyp info spawn args '-I', npm ERR! gyp info spawn args '/usr/local/lib/node_modules/npm/node_modules/node-gyp/addon.gypi', npm ERR! gyp info spawn args '-I', npm ERR! gyp info spawn args '/tmp/.node-gyp/14.16.0/include/node/common.gypi', npm ERR! gyp info spawn args '-Dlibrary=shared_library', npm ERR! gyp info spawn args '-Dvisibility=default', npm ERR! gyp info spawn args '-Dnode_root_dir=/tmp/.node-gyp/14.16.0', npm ERR! gyp info spawn args '-Dnode_gyp_dir=/usr/local/lib/node_modules/npm/node_modules/node-gyp', npm ERR! gyp info spawn args '-Dnode_lib_file=/tmp/.node-gyp/14.16.0/<(target_arch)/node.lib', npm ERR! gyp info spawn args '-Dmodule_root_dir=/volume1/web/server/node_modules/canvas', npm ERR! gyp info spawn args '-Dnode_engine=v8', npm ERR! gyp info spawn args '--depth=.', npm ERR! gyp info spawn args '--no-parallel', npm ERR! gyp info spawn args '--generator-output', npm ERR! gyp info spawn args 'build', npm ERR! gyp info spawn args '-Goutput_dir=.' npm ERR! gyp info spawn args ] npm ERR! /bin/sh: pkg-config: command not found npm ERR! gyp: Call to 'pkg-config pixman-1 --libs' returned exit status 127 while in binding.gyp. while trying to load binding.gyp npm ERR! gyp ERR! configure error

Assuming SWR (stale while revalidate) is working, we could definitely use the ability to edit images in workers. We would need support for node canvas or something similar.

So at this point, I have all the images and the data required to align the images. I used node-canvas to do that. So here's how I aligned the images:

ECharts was originally a Baidu project, released under https://github.com/ecomfe/echarts (ecomfe = "E-commerce frontend"?). They still maintain some of the auxiliary libraries.

I've been using it since around ... 2018-ish[0]? ... as a replacement for Google Charts. It was my first time using a big library from one of the Chinese tech giants -- basic docs and tutorials in English, then all the advanced stuff (and comments) written in Chinese. I was impressed by how comprehensive the charts library was, and how they'd obviously invested a lot of brainwork into the configuration system. IMO it's one of the highest-quality data visualization libraries in JavaScript unless you're willing to dive deep into something like d3.js.

The blog post's author describes running echarts in a headless Chrome, though, which seems insane to me. It's JavaScript rendering to a -- can't it run in Node with https://github.com/Automattic/node-canvas ?

[0] A small publicly-accessible example: https://john-millikin.com/reddit-front-page-2018#by-domain

node-pre-gyp ERR! install response status 404 Not Found on https://github.com/Automattic/node-canvas/releases/download/v2.11.0/canvas-v2.11.0-node-v93-darwin-unknown-arm64.tar.gz

Another approach is it to create a background image and insert the texts and the metadata with a canvas library like node-canvas. This approach is very well described in this Learn With Jason episode. But with a canvas library we have to specify on which coordinates we want to render our texts and it does not wrap automatically if it becomes to long.

Never used it but probably this: https://github.com/Automattic/node-canvas

I found this issue: https://github.com/Automattic/node-canvas/issues/1974 and somebody commented with a link about node buffers. So I decided to test these parts.

Some popular Node.js libraries for manipulating images are node-canvas and sharp.

node.js + imagemagick + node canvas + node canvas libraries (depends on your OS)

If you want to go the same route check out the node-canvas library from the Automattic folks. That essentially lets you use the Browser Canvas API for drawing (but server side instead of in the browser).