Support `sections` format

[DavidSouther]

Sourcemaps have a sections format, allowing an array of subsourcemaps for joining files, etc. https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit#heading=h.535es3xeprgt

[DavidSouther]

Probably depends on mozilla/source-map#16

[sokra]

yep. Nobody supports the sections format by now...

[DavidSouther]

Google does, and chrome has for some time.
On Sep 8, 2014 3:48 AM, "Tobias Koppers" notifications@github.com wrote:

yep. Nobody supports the sections format by now...

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#8 (comment)
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[lydell]

I guess this could be done now since mozilla/source-map#127 has been merged.

[LeoNatan]

RN packager uses this format also.

[jkrems]

Update from the future: Basic sections support has landed back in the day, so this should no longer be blocked in general.

[evanw]

In case it helps: I have tried adding basic sections support to https://evanw.github.io/source-map-visualization/.