Migrate to jest/eslint

[rmuchall]

Hi folks,

Following my other PRs to typestack here is a similar one for class-transformer.
typestack/routing-controllers#553
typestack/class-validator#573

Action taken
Replaced mocha, chai, sinon and nyc with jest
Reasoning
To normalize the test framework across all my projects
Jest appears to be a more complete framework
Jest is more popular
https://npmcompare.com/compare/jest,mocha

Action taken
Replaced tslint with eslint
Reasoning
tslint is deprecated and the recommended replacement is eslint

Action taken
Replaced gulp with npm scripts (copyfiles, json, rimraf)
Reasoning
Gulp is awesome but we can achieve the same result by using npm scripts (same as routing-controllers)

Thanks,
Rob

[jotamorais]

@NoNameProvided, I reviewed this PR in preparation to integrate other PRs and other important fixes (such as #339)

I cloned and integrated it locally but when I tried and to push to the develop branch, I noticed that the branch is protected and and the CI won't allow me to push. Would you please either add your review to the PR as well, or grant me permission to push to that branch (or remove that status check from Travis?

Here's what I get:

Thanks!

[jotamorais]

@NoNameProvided, I reviewed this PR in preparation to integrate other PRs and other important fixes (such as #339)

I cloned and integrated it locally but when I tried and to push to the develop branch, I noticed that the branch is protected and and the CI won't allow me to push. Would you please either add your review to the PR as well, or grant me permission to push to that branch (or remove that status check from Travis?

Here's what I get:

Thanks!

@NoNameProvided / @pleerock
Appreciate if you could help me with this.

[jotamorais]

@jotamorais, I was talking with @pleerock. Could you try again?

@saulotoledo & @pleerock,

I tried again but the branch is still protected and with the commit hook and won't allow me to push.

[saulotoledo]

I suggest to use https://github.com/mysticatea/npm-run-all here to make it cleaner. (It does not need to be done in this PR.)

[saulotoledo]

@jotamorais Please find me on gitter if you have some time later.

[pleerock]

@jotamorais I don't watch for notifications in these repositories, since I don't maintain them. But you can reach me in email or typeorm's slack in case if you need something from me. @NoNameProvided I temporary switched number of approvals to master back to 1 since it looks like there are few very important PRs here that people wants to get merged. Sorry if I did something wrong, you can return it back to 2 once you have a time.

[github-actions]

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