analytics.js

• Project Page
• The extern file universal_analytics_api.js is copied from the closure compiler project

comlink.js

• Project Page
• The ES module build is get from unpkg with minor Closure compiler fixes and reformatting.

FFMpeg

Project Page

Follow the Emscripten Getting Started Instruction to setup the toolchain. In short:

$ git clone https://github.com/emscripten-core/emsdk.git
$ cd emsdk
$ ./emsdk install latest
$ ./emsdk activate latest
$ source ./emsdk_env.sh

You can find the current used version from the output of ./emsdk activate latest as:

Set the following tools as active:
   node-14.18.2-64bit
   releases-1eec24930cb2f56f6d9cd10ffcb031e27ea4157a-64bit

After the Emscripten environment is setup properly, run build_ffmpeg.sh will build ffmpeg.{js,wasm} from src/third_party/ffmpeg.

The emsdk version of the last build of this package is 3.1.31.