Support for core-js3 & React 17!

[ivaylopetrovdev]

To Reproduce
Steps to reproduce the behavior including code snippet (if applies):
npm install @react-pdf/renderer
npm install core-js

Expected behavior

NOT to receive such error:
ERROR in ./node_modules/babel-runtime/core-js/promise.js
Module not found: Error: Can't resolve 'core-js/library/fn/promise' in 'project_path/node_modules/babel-runtime/core-js'
@ ./node_modules/babel-runtime/core-js/promise.js 1:30-67
@ ./node_modules/babel-runtime/helpers/asyncToGenerator.js
@ ./node_modules/page-wrapping/dist/page-wrapping.es.js
@ ./node_modules/@react-pdf/renderer/dist/react-pdf.browser.es.js
@ ./src/app/util/pdf-generator.worker.js

[ivaylopetrovdev]

@diegomura please address this with highest priority :)

[princefishthrower]

@ivaylopetrovdev Made a pull request to bump react version here: #1157
You can meanwhile just fork this and issue npm update react, it works fine and then all tests pass, not sure where any maintainers are on this one, the original React 17 version issue was raised last October...

[ivaylopetrovdev]

@ivaylopetrovdev Made a pull request to bump react version here: #1157
You can meanwhile just fork this and issue npm update react, it works fine and then all tests pass, not sure where any maintainers are on this one, the original React 17 version issue was raised last October...

@princefishthrower lovely, can't wait to see your PR merged so we can start using this :) Appreciate your efforts!

[KolbySisk]

Any updates on this? I'd like to use this with a new CRA project, but I'm unable to until React 17 is supported.

[diegomura]

Keeping #1062. It's confusing to keep the conversation in both sorry