* chore: change goog.module to goog.declareModuleId
* chore: change test helper exports to esmod exports
* chore: change test helpers to use esmodule imports
* chore: convert imports of test helpers to esmodule imports
* chore: convert other imports in tests to esm imports
* fix: make imports use built files
* chore: add blockly imports to a bunch of tests
* fix: reference Blockly.Blocks instead of Blocks'
* fix: properly import generators
* chore: fix lint
* chore: cleanup from rebase
* chore: cleanup from rebase
* chore: fix blocks tests
* Revert "fix: lint"
This reverts commit 050956d105.
* Revert "fix: run mocha as a module"
This reverts commit 4dac25ae99.
* Revert "move to modules, but break mocha"
This reverts commit 220d7bbd1d.
* fix: move core test helpers into new directory
* fix: add test helpers to core and convert to goog modules
* fix: change tests to use local helpers
* fix: change local tests to use chai asserts
* fix: skip field tests in serializer b/c test blocks are unavailable
* fix: rename some helper files
* fix: rename some helper modules
* fix: split block helpers into code gen and serialization
* fix: split block defs into new helper file
* fix: split warning helpers into new file
* fix: split user input helpers into new file
* fix: split event helpers into a new file
* fix: split variable helper into new file
* fix: move remaining test helpers to new setup-teardown file
* fix: rename setup and teardown module
* fix: cleanup from rebase
* fix: undo accidental rename
* fix: lint?
* fix: bad toolbox definitions namespace
* fix: fixup warning helpers
* fix: remove inclusion of dev-tools in mocha tests
* move to modules, but break mocha
* fix: run mocha as a module
* fix: lint
