e1c19cecad
Summary: Updates Prettier to v1.12.1, using `xplat/js/scripts/prettier-bump.js` based on the playbook by https://our.intern.facebook.com/intern/wiki/Prettier/upgrade-guide/ All changes related to upgrading or running Prettier allow-many-files allow-large-files bypass-lint drop-conflicts ignore-conflict-markers ignore-signed-source ignore-nocommit Reviewed By: benjaffe, ryanmce, yungsters Differential Revision: D7652946 fbshipit-source-id: 396d45c675e93f2298cd2920d927630c81867447