Init PDFWorker via MesssagePort.

[yurydelendik]

Webpack people can use 'pdfjs-dist/webpack' module for PDF.js autoconfiguration.

Fixes #7612
Addresses #7683

[yurydelendik]

/botio test

[pdfjsbot]

From: Bot.io (Linux)

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Received

Command cmd_test from @yurydelendik received. Current queue size: 1

Live output at: http://107.21.233.14:8877/8fc414c822c7a13/output.txt

[pdfjsbot]

From: Bot.io (Windows)

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Received

Command cmd_test from @yurydelendik received. Current queue size: 1

Live output at: http://54.215.176.217:8877/2a48fbff731d9b0/output.txt

[pdfjsbot]

From: Bot.io (Windows)

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Success

Full output at http://54.215.176.217:8877/2a48fbff731d9b0/output.txt

Total script time: 21.72 mins

• Font tests: Passed
• Unit tests: Passed
• Regression tests: Passed

[pdfjsbot]

From: Bot.io (Linux)

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Success

Full output at http://107.21.233.14:8877/8fc414c822c7a13/output.txt

Total script time: 26.55 mins

• Font tests: Passed
• Unit tests: Passed
• Regression tests: Passed

[timvandermeij]

/botio-linux preview

[pdfjsbot]

From: Bot.io (Linux)

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Received

Command cmd_preview from @timvandermeij received. Current queue size: 0

Live output at: http://107.21.233.14:8877/640d58b5b85ad34/output.txt

[pdfjsbot]

From: Bot.io (Linux)

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Success

Full output at http://107.21.233.14:8877/640d58b5b85ad34/output.txt

Total script time: 2.16 mins

Published

• Viewer: http://107.21.233.14:8877/640d58b5b85ad34/web/viewer.html
• Extension: http://107.21.233.14:8877/640d58b5b85ad34/extensions/firefox/pdf.js.xpi

[timvandermeij]

Looks good, thank you!

[timvandermeij]

The wiki page has been updated as well.

[jwahyoung]

@timvandermeij Are there usage notes for this? I checked the wiki but I didn't find the information. Based on the source code, I think I'm supposed to manually init the worker myself and then pass it as an argument to PDFJS.workerPort, but I'm not sure. Can you verify this?

[yurydelendik]

I think I'm supposed to manually init the worker myself and then pass it as an argument to PDFJS.workerPort

@jedd-ahyoung see external/dist/webpack.js for usage example with webpack -- webpack loader takes care of the worker initialization (and it's out of control of the PDF.js). You can wrap existing worker with PDFWorker object and pass it to the PDF.js.