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Reduce memory overhead of sourcemapLocations #169

Merged
merged 1 commit into from
Jan 2, 2020
Merged

Reduce memory overhead of sourcemapLocations #169

merged 1 commit into from
Jan 2, 2020

Commits on Nov 19, 2019

  1. Reduce memory overhead of sourcemapLocations 

    It was using an object to store positions in the string. This meant that
those offsets were first stringified and then added as object
properties. For a 200K JS code file (as parsed by rollup), the
sourcemapLocations object was taking up 980K. Switching it to a BitSet
that uses one bit per offset makes it take up 36K instead.

Fixes Rich-Harris#167
    @mihaip
    mihaip committed Nov 19, 2019
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