demo: evaluating OPA's Wasm from a single html file

[srenatus]

This is an exercise in simplicity: evaluating OPA's wasm from a static website, hosted on github, via npm-opa-wasm:

It'll pass the windows' fragment hash as input to test.rego:

🐮 https://srenatus.github.io/opa-wasm-browser/#moo "moo" gives you a pass,
indicated by the green background

🛑 Anything else is a deny, red background.

References

• Open Policy Agent, its Wasm docs
• npm-opa-wasm, the JS SDK used here

[anderseknert]

For anyone else looking, the repo is here https://github.com/srenatus/opa-wasm-browser :)