IE11 syntax error with v3.3.1

Describe the bug

• Development mode throws a syntax error in IE11 on v3.3.1
• SCRIPT438: Object doesn't support property or method 'entries'

Did you try recovering your dependencies?

Yes.

›» yarn --version
1.21.1

Environment

›» npx create-react-app --info

Environment Info:

  System:
    OS: macOS Mojave 10.14.6
    CPU: (12) x64 Intel(R) Core(TM) i7-8850H CPU @ 2.60GHz
  Binaries:
    Node: 10.16.3 - /usr/local/bin/node
    Yarn: 1.21.1 - ~/Code/makana-platform/nani/node_modules/.bin/yarn
    npm: 6.9.0 - /usr/local/bin/npm
  Browsers:
    Chrome: 79.0.3945.130
    Firefox: Not Found
    Safari: 13.0.5
  npmPackages:
    react: ^16.12.0 => 16.12.0 (16.8.6, 0.14.9)
    react-dom: ^16.9 => 16.12.0 (16.8.6)
    react-scripts: 3.3.1 => 3.3.1 
  npmGlobalPackages:
    create-react-app: Not Found

Steps to reproduce

1. Upgraded to CRA v3.3.1
2. Startup app in dev mode (yarn start)
3. Open site in IE11

Expected behavior

• IE11 should work

Chrome - WORKS

Actual behavior

• IE11 throws SCRIPT438: Object doesn't support property or method 'entries' in ansi-styles
• Posted an issue to that repo, was denied: https://github.com/chalk/ansi-styles/issues/57

IE11 - BROKEN

Reproducible demo

• https://github.com/afrankel-sfdo/cra-3.3.1
• clone
• yarn && yarn start
• View site in IE11

›» yarn browserslist --env="development"
chrome 79
firefox 72
ie 11
safari 13

[ambroselittle]

I really don’t mean this sarcastically. Could y’all add “Open in IE 11” to your test plans for CRA? This plus this, both very recently, where it breaks immediately in IE. Both head scratchers until we figure it out/Google and find the issue(s) here.

[schm-dt]

+1, also experiencing this.