* refactor: simply browserslists defaults overwriting
When `hasTargets` is `false`, `targets` is always an empty object by definition, `objectToBrowserslist({})` always return `[]` therefore we can remove `objectToBrowserslist`.
* test: apply external-helpers on preset-env test fixtures
* test: add ie 6 to force all transforms in corejs 3, debug, corejs 2 fixtures
* Add ie 6 as targets for test fixtures
* refactor: add @babel/helper-validator-option
* refactor: simplify validateTopLevelOptions
* perf: the recursive version is not practically fast
* Update packages/babel-helper-validator-option/README.md
Co-authored-by: Brian Ng <bng412@gmail.com>
* Update packages/babel-helper-validator-option/src/validator.js
* fix: incorrect type annotation
* refactor: use babel/helper-option-validator in babel/compat-data
* chore: fix flow types error
* Address review comments
* address review comments
Co-authored-by: Brian Ng <bng412@gmail.com>
* chore: use yarn 2
* chore: remove redundant yarn locks
* chore: remove publishEslintPkg
* chore: remove redundant make bootstrap
* Update .yarnrc.yml
Co-authored-by: Kristoffer K. <merceyz@users.noreply.github.com>
* chore: use workspace protocol for eslint packages in the root
Co-Authored-By: merceyz <merceyz@users.noreply.github.com>
* chore: pin caniuse-lite versions
Testcases in packages/babel-preset-env/test/fixtures/debug/browserslists-defaults-not-ie
depends on specific caniuse-lite versions. We pinned the version here
so we don't have to deal with fixture different in e2e-tests
where all deps will be updated and tested.
* chore: resolve yarn install warnings
* chore: update yarn cache path on circle/travis
* chore: add yarn deduplicate plugin
* chore: deduplicate lock files
* chore: move devDependencies to leaf packages
* chore: remove @yarnpkg/plugin-constraints
* chore: remove unused dedupe options
* test: fix unwanted self reference
* chore: remove output-file-sync dependency
* chore: update browserify to 16.5.2
Co-authored-by: Kristoffer K. <merceyz@users.noreply.github.com>
