[Pkg-javascript-devel] Removing babel 6: Call for help

[Xavier]

Le 10/05/2020 à 21:23, Pirate Praveen a écrit :
> 
> 
> On Sat, May 9, 2020 at 10:54 pm, Xavier <yadd at debian.org> wrote:
>> Thanks for your awesome work!
> 
> Thanks to you, Jonas and Nilesh too for helping.
> 
> Can somoene check babel7 branch in node-yarnpkg? It builds fine but I
> probably need to include some specific plugins from stage-0 preset. It
> builds fine, but when you try to run, it fails with this error.
> 
> $ yarnpkg
> /usr/share/nodejs/@babel/runtime/helpers/inherits.js:5
>    throw new TypeError("Super expression must either be null or a
> function");
>    ^

In `function _inherits(subClass, superClass)`, superClass is "undefined"
instead of "null".

Adding (in babel7) `if(superClass===undefined) superClass=null;` fixes
this problem but then:

/usr/share/nodejs/yarn/lib/util/generate-pnp-map-api.tpl.js:28
var ignorePattern = $$BLACKLIST ? new RegExp($$BLACKLIST) : null;
                    ^
ReferenceError: $$BLACKLIST is not defined
    at Object.<anonymous>
(/usr/share/nodejs/yarn/lib/util/generate-pnp-map-api.tpl.js:28:21)
    at Module._compile (internal/modules/cjs/loader.js:778:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:789:10)
    at Module.load (internal/modules/cjs/loader.js:653:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
    at Function.Module._load (internal/modules/cjs/loader.js:585:3)
    at Module.require (internal/modules/cjs/loader.js:692:17)
    at require (internal/modules/cjs/helpers.js:25:18)
    at Object.<anonymous>
(/usr/share/nodejs/yarn/lib/util/generate-pnp-map.js:22:52)
    at Module._compile (internal/modules/cjs/loader.js:778:30)

So it seems that this is not an error on babel7 side but on yarn build