pretty-format

jest-circus: Fail tests when multiple done() calls are made

jest-circus, jest-jasmine2: Fail the test instead of just warning when describe returns a value

jest-config: Default to Node testing environment instead of browser (JSDOM)

jest-config: Use jest-circus as default test runner

jest-config, jest-runtime: Use "modern" implementation as default for fake timers (#10874 & #11197)

[jest-config, jest-haste-map, jest-resolve, jest-runner, jest-runtime, jest-test-sequencer, jest-transform, jest-types] Add custom HasteMap class implementation config option

jest-repl, jest-runner: Run transforms over environment

jest-runner: Set exit code to 1 if test logs after teardown

jest-runner: Run transforms over runnner

jest-runner: Run transforms over testRunnner