Use Jest Configuration

[gregberge]

Now that jestjs/jest#5957 is merged and release, we can drop jest-puppeteer.config.js and use the Jest configuration.

We have to use testEnvironmentOptions and read configuration from this.

jest-puppeteer.config.js support will be deprecated and removed in the next major version.

[gregberge]

It is actually not ready because as mentioned in jestjs/jest#5957 (comment), it is not possible to access testEnvironmentOptions in globalConfig.

[lukaszfiszer]

Other projects use global for plugin-related config. Example: https://kulshekhar.github.io/ts-jest/user/config/#ts-jest-options jest-puppeteer could easily use this pattern too. What do you think @neoziro ?

[gregberge]

Hello @lukaszfiszer, unfortunately globals are not accessible in globalConfig, see https://github.com/facebook/jest/blob/master/packages/jest-config/src/index.ts#L104. So we are still stuck with jest-puppeteer.config.js...