pre-build before wasm-pack publish

[csmoe]

Closes #438

[ashleygwilliams]

so- i think this is great! the one thing i'd add is that the "magic" of this feature is that it will build your project for you with the defaults. i think this is 100% in line with the design values of wasm-pack, but for the sake of the end user, i think we should emit a warning/info that says that wasm-pack has built your project with the defaults (pkg dir, and for es6 (browser target)). if you could add that i think we'll be good to merge.

if we really wanted to expand this, we could instead prompt the user if they want the project built (or if they want to cancel), and then ask them for the target they prefer. let me know what you think about that! (to skip the interactive element someone could pass wasm-pack publish --target <intended target>)

[csmoe]

@ashleygwilliams that's great, so I'll expand the features soon as you wrote.

[csmoe]

@ashleygwilliams pre-build flow:

build? => out_dir_name[default(pkg)]? => target[default(browser)]? => DONE

[ashleygwilliams]

@csmoe this is looking AWESOME! thanks so much- do you think we could change the prompt from npm package to just package? it may also be nice to list the defaults/options for out dir and target options when prompting (e.g. when you run npm init it will show the default and you can just choose it or override) - we could also add that in a separate PR :)

so yeah, to merge- let's just switch npm package to just package- and if you'd like to, add the defaults/options

[csmoe]

@ashleygwilliams

it may also be nice to list the defaults/options for out dir and target options when prompting

it already does, default options indicated within [...] as the demo shows(I just Enter to choose the default). but for clarifying, I'll add "default" keyword to the prompt.

[csmoe]

done

[ashleygwilliams]

this is fantastic! thank you so much!!

[csmoe]

@ashleygwilliams btw, may I still have your invitation of rustwasm-org as we talked in twitter several months ago?

[ashleygwilliams]

oh yes! i'll take care of that today :)