Support 'EventSource' in lib.dom.d.ts

[mjbvz]

From rocketRobin (@rocketRobin) on January 24, 2017 8:30

• VSCode Version: Code 1.8.1 (ee428b0eead68bf0fb99ab5fdc4439be227b6281, 2016-12-19T14:49:23.350Z)
• OS Version: Windows_NT ia32 6.1.7601

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Steps to Reproduce:

1. javascript intellesence do not support EventSource

Copied from original issue: microsoft/vscode#19117

[mjbvz]

From Sara Itani (@mousetraps) on January 24, 2017 23:5

Matt Bierner (@mjbvz) - looks like EventSource is missing from lib.dom.d.ts

[mjbvz]

As per Sara Itani (@mousetraps)' comment, a type definition for EventSource should be added to the dom d.ts

[Pappa]

I have opened a PR for this issue:

#14658

[mhegazy]

PRs welcomed. You can find more information about contributing lib.d.ts fixes at https://github.com/Microsoft/TypeScript/blob/master/CONTRIBUTING.md#contributing-libdts-fixes.