Use browserlists default as the default target of preset-env
#12616
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BABEL_8_BREAKING
flagThis PR includes commits from #12615. When the
targets
ofpreset-env
is not specified, Babel 8 will use browserlistsdefaults
query astargets
. Note that although thedefaults
query will change between browserlists versions, it is still essentially static asie 11
untilbrowserlists
removeie 11
fromdefaults
query.As we have added
targets: { "browsers": "ie 6" }
to many test fixtures in #12615, the impacted test fixtures changes are limited and should be good for review.