What module format to use for UMD

[patkujawa-wf]

Does jspm support umdjs/umd and, if so, what format should be specified for them?

[guybedford]

UMD is a combination of formats, so it is supported by jspm.

Detection happens in order from ES6, AMD, CommonJS and global.

So UMD will usually be detected as AMD.

You can change a UMD module to be detected as CommonJS or global though if needed by setting the format in the package.json or override.

[patkujawa-wf]

So if it's UMD, we can leave out the format setting or we can set it to any of the others, basically? Thanks for clarifying! :)

[guybedford]

Usually it will detect UMD as AMD, and treat it just like an AMD module, triggering the AMD part of the UMD detection.

This can sometimes go wrong though, in which case it can be useful to set the format explicitly to AMD or global if the UMD module as AMD isn't working.