Try on Val Town

This service enables quick generation of new val with specified jsr package. Package authors can provide custom examples by setting either:

valtownExample property of jsr.json/deno.json to contain example js/ts code
valtownExampleFilename property of jsr.json/deno.json to point to the file with example js/ts code

If no example is found val will be created with the default snippet, using @luca/flag as an example :


import * as flag from "jsr:@luca/flag";

Go ahead ↗️ try it (on Val Town)! 🎉

Additionally, the service supports ?code=<base64code> query param that allows overriding extracted/generated example code. For example one might want to override @luca/flag's snippet with:


import { printProgress } from "jsr:@luca/flag@1";

printProgress();

In order to do so first you need to convert it to base64:

$ printf 'import { printProgress } from "jsr:@luca/flag@1";\n\nprintProgress();' | base64 -w0
# ==> aW1wb3J0IHsgcHJpbnRQcm9ncmVzcyB9IGZyb20gImpzcjpAbHVjYS9mbGFnQDEiOwoKcHJpbnRQcm9ncmVzcygpOw==

Then you simply construct the URL by setting the returned value to code query param:
↗️ https://vladimyr-jsr.web.val.run?code=aW1wb3J0IHsgcH...

Usage

https://vladimyr-jsr.web.val.run/<scope>/<name>[@<version>]
https://vladimyr-jsr.web.val.run?code=<base64code>

Example

Migrated from folder: jsr/jsr