Turn on new signatures mode

Summary: This mode re-implements parts of the types-first architecture, and is a step toward types-first 2.0, which will greatly reduce memory usage. In this mode, Flow finds some errors that were missed before. Changelog: [Internal][Changed] Updated to Flow's new signatures mode for types-first Reviewed By: panagosg7 Differential Revision: D26890348 fbshipit-source-id: 4c0bc4960a79ae2c4fa4c420bac506c9b2565beb
facebook · Mar 9, 2021 · d4d2e90 · d4d2e90
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diff --git a/.flowconfig b/.flowconfig
@@ -48,6 +48,7 @@ suppress_type=$FlowFixMeState
 suppress_type=$FlowFixMeEmpty
 
 experimental.abstract_locations=true
+experimental.new_signatures=true
 
 [lints]
 sketchy-null-number=warn

diff --git a/.flowconfig.android b/.flowconfig.android
@@ -48,6 +48,7 @@ suppress_type=$FlowFixMeState
 suppress_type=$FlowFixMeEmpty
 
 experimental.abstract_locations=true
+experimental.new_signatures=true
 
 [lints]
 sketchy-null-number=warn