* Run prettier on the files that will be refactored under @kbn/test, in a follow-up pr.
* Fixup all paths to mocha,
under kbn-test, with needed
exports/imports.
* Fixed borked path (bad refactor).
* Fixup one more borked path.
* Fixup tsconfig for xml.ts
* Drop setup_node_env as it's already
in KIBANA/scripts/mocha.js.
Also, fixup cwd for globby as we are
exec-ing from a different directory.
In order to make the license that applies to each file as clear as possible, and to be consistent with elasticsearch, we are adding Apache 2.0 license headers to the top of each file.
Existence of this header is enforced by eslint and tslint and missing headers were automatically added in the last commit by running:
```
node scripts/eslint --fix && node scripts/tslint --fix
```
* feat(12976): node version validation at runtime.
* refact(12976): move the code into a static utilities class.
* test(12976): added first test case using jest.
* test(12976): added test cases for node_version.
* feat(12976): create setup env node to bootstrap babel, ts-node and node version validator.
* refact(12976): migrated node version code from es6 to es5.
* feat(12976): node version validation at runtime.
* refact(12976): move the code into a static utilities class.
* test(12976): added first test case using jest.
* test(12976): added test cases for node_version.
* feat(12976): create setup env node to bootstrap babel, ts-node and node version validator.
* refact(12976): migrated node version code from es6 to es5.
* fix(12976): remove one level from ts node register cache directory link.
* chore(12976): added caret to semver dependecy in order to support minor versions.
* refact(12976): small change from named import to default import on node version validator.
* refact(12976): removed ts_node_register and add the code to babel_register.
* feat(12976): split eslint config in order to properly support files built to run before and after node version validator. refact(12976): convert script files to es5 code. refact(12976): delete inline eslint configs from node version check related files.
* refact(12976): remove ts node register file.
* refact(12976): completely port setup_node_env to es5.
* refact(12976): remove babel_register invokation from external dependencies in scripts.
* refact(12976): move node_version code directly into node_version_validator inside setup_node_env folder.
* refact(12976): only node version validator for kbn script.
* [mocha] run tests with mocha script, remove grunt-simple-mocha
* [ci] force colored output
* [ci] disable color when reading the yarn bin
* [dev/build/exec] support tooling log having its own chalk
* [dev/mocha] avoid changing the cwd of the process
* [dev/mocha] only match files, speed up negative matches
* [cli/serve/test] strip ansi control characters from logs
* [ci] disable color in all `yarn bin` invocations
* [dev/mocha] cleanup old runInBand check
* [dev/mocha] enable gloabl leak checks
* [babel] create babel-preset and babel-register modules
* [babel-preset] add comments to babel-preset-env.target choices
* [babel-preset] use more normal BUILT_WITH_BABEL signal
* [babel-register] extended comment about filtering ./src in dist
* [babel-preset] stage of class properties has changed, sorta
* [scripts] convert `npm run makelogs` to script
* [scripts] convert `npm run mocha` to script
* [scripts] add warning to `test:ui:runner` npm script
* [script] fix location of scripts in warnings
