Tools: [polyserve] 0.27.4 regression: duplicate CE registration failures

[web-padawan]

Description

After upgrading to latest polyserve 0.27.4 released today, we get the errors in tests:

Error: Failed to execute 'define' on 'CustomElementRegistry': this name has already been used with this registry
  <unknown> at /node_modules/@polymer/polymer/lib/elements/dom-module.js:134

Versions & Environment

• polyserve: 0.27.4
• node: 8.11.1
• Operating System: Mac OS

Steps to Reproduce

1. Clone the repo:

git clone --depth 1 -b p3-preview-bare git://github.com/vaadin/vaadin-themable-mixin.git && cd vaadin-themable-mixin

1. Install the modulizer:

git clone git://github.com/Polymer/polymer-modulizer.git && cd polymer-modulizer && npm link

1. Install the tools:

npm i -g bower yarn magi-cli polyserve

1. Install bower deoendencies:

bower install

1. Run the conversion:

magi p3-convert --out . --import-style=name

1. Install dependencies:

yarn installl --flat

1. Serve the component:

polyserve --npm --module-resolution=node

1. Go to http://127.0.0.1:8081/components/@vaadin/vaadin-themable-mixin/test/

Expected Results (0.26.0)

Tests are passing, no errors thrown:

Actual Results (0.27.4)

The following errors are thrown:

Note also a different number of requests:

• with the URL: http://127.0.0.1:8081/components/@polymer/polymer/lib/elements/dom-module.js
• with the URL: http://127.0.0.1:8081/node_modules/@polymer/polymer/lib/elements/dom-module.js

If we don't use --import-style=name, we get the 404 instead for two of those (not having components in the URL):

[web-padawan]

A gentle ping on this to @aomarks.
We're aiming to get versions of the components using bare module specifiers published and tested with the latest CLI, and we are currently stuck to 1.7.0-pre.3 because of this issue.

[aomarks]

Acknowledged. Will be fixed this week.

[aomarks]

Just released [email protected] which contains this fix (hopefully).

[web-padawan]

Yay! Tried with some of the components and so far it works like a charm. Thank you for quick fix! 🥇