Missing src of map files cause errors in Microsoft Edge 14

[klarkc]

Description

When you import neon-animation#1.2.4 that depends on web-animations-js#2.2.2, a lot of 404 errors comes in the console. Might be related to the missing of src directory on the web-animations-js directory.

Expected outcome

No errors.

Actual outcome

404 GET /components/web-animations-js/src/deprecation.js
404 GET /components/web-animations-js/src/timing-utilities.js
404 GET /components/web-animations-js/src/normalize-keyframes.js
404 GET /components/web-animations-js/src/web-animations-bonus-cancel-events.js
404 GET /components/web-animations-js/src/keyframe-interpolations.js
404 GET /components/web-animations-js/src/web-animations-bonus-object-form-keyframes.js
404 GET /components/web-animations-js/src/effect-callback.js
404 GET /components/web-animations-js/src/scope.js
404 GET /components/web-animations-js/src/timeline.js
404 GET /components/web-animations-js/src/keyframe-effect-constructor.js
404 GET /components/web-animations-js/src/web-animations-next-animation.js
404 GET /components/web-animations-js/src/group-constructors.js
404 GET /components/web-animations-js/src/scope.js
404 GET /components/web-animations-js/src/timing-utilities.js
404 GET /components/web-animations-js/src/web-animations-bonus-object-form-keyframes.js
404 GET /components/web-animations-js/src/web-animations-next-animation.js
404 GET /components/web-animations-js/src/web-animations-bonus-cancel-events.js
404 GET /components/web-animations-js/src/timeline.js
404 GET /components/web-animations-js/src/normalize-keyframes.js
404 GET /components/web-animations-js/src/keyframe-interpolations.js

Live Demo

https://saucelabs.com/beta/tests/f7133230617a460eb91535a9dde01f85/watch#12

Steps to reproduce

Import neon-animation element, run the element on MS Edge browser.

Browsers Affected

• Chrome
• Firefox
• Safari 9
• Safari 8
• Safari 7
• Edge
• IE 11
• IE 10

[klarkc]

Might be related #195