This repository attempts to recreate the issue raised in facebook/create-react-app#10258
Running npm start launches a basic SPA that works in Chrome, FireFox and Edge, but fails in IE11 even though it's meant to be the polyfill included is meant to overcome issues.
My earlier code had HOCs defined in index.js files, and the problem appeared to be due to the following type of definitions:
import { connect } from "react-redux";
import { withStyles } from "@material-ui/core/styles";
import styles from "../../style/mainPage.css";
import MainPage from "./mainPage";
const mapStateToProps = state => ({
connection: state.mainPage.connection,
query: state.mainPage.query,
form: state.mainPage.activeForm?.form,
openSearchDrawer: state.mainPage.searchDrawer,
});
export default connect(mapStateToProps)(withStyles(styles)(MainPage));
The connect on top of withStyles doesn't appear to be transpiled correctly for IE, leading to an error like the following:
Error: You must pass a component to the function returned by connect. Instead received {"$$typeof":60112,"propTypes":{},"displayName":"WithStyles(MainPage)","options":{"defaultTheme":{"breakpoints":{"keys":["xs","sm","md","lg","xl"],"values":{"xs":0,"sm":600,"md":960,"lg":1280,"xl":1920}},"direction":"ltr","mixins":{"toolbar":{"minHeight":56,"@media (min-width:0px) and (orientation: landscape)":{"minHeight":48},"@media (min-width:600px)":{"minHeight":64}}},"overrides":{},"palette":{"common":{"black":"#000","white":"#fff"},"type":"light","primary":{"light":"#7986cb","main":"#3f51b5","dark":"#303f9f","contrastText":"#fff"},"secondary":{"light":"#ff4081","main":"#f50057","dark":"#c51162","contrastText":"#fff"},"error":{"light":"#e57373","main":"#f44336","dark":"#d32f2f","contrastText":"#fff"},"warning":{"light":"#ffb74d","main":"#ff9800","dark":"#f57c00","contrastText":"rgba(0, 0, 0, 0.87)"},"info":{"light":"#64b5f6","main":"#2196f3","dark":"#1976d2","contrastText":"#fff"},"success":{"light":"#81c784","main":"#4caf50","dark":"#388e3c","contrastText":"rgba(0, 0, 0, 0.87)"},"grey":{"50":"#fafafa","100":"#f5f5f5","200":"#eeeeee","300":"#e0e0e0","400":"#bdbdbd","500":"#9e9e9e","600":"#757575","700":"#616161","800":"#424242","900":"#212121","A100":"#d5d5d5","A200":"#aaaaaa","A400":"#303030","A700":"#616161"},"contrastThreshold":3,"tonalOffset":0.2,"text":{"primary":"rgba(0, 0, 0, 0.87)","secondary":"rgba(0, 0, 0, 0.54)","disabled":"rgba(0, 0, 0, 0.38)","hint":"rgba(0, 0, 0, 0.38)"},"divider":"rgba(0, 0, 0, 0.12)","background":{"paper":"#fff","default":"#fafafa"},"action":{"active":"rgba(0, 0, 0, 0.54)","hover":"rgba(0, 0, 0, 0.04)","hoverOpacity":0.04,"selected":"rgba(0, 0, 0, 0.08)","selectedOpacity":0.08,"disabled":"rgba(0, 0, 0, 0.26)","disabledBackground":"rgba(0, 0, 0, 0.12)","disabledOpacity":0.38,"focus":"rgba(0, 0, 0, 0.12)","focusOpacity":0.12,"activatedOpacity":0.12}},"props":{},"shadows":["none","0px 2px 1px -1px rgba(0,0,0,0.2),0px 1px 1px 0px rgba(0,0,0,0.14),0px 1px 3px 0px rgba(0,0,0,0.12)","0px 3px 1px -2px rgba(0,0,0,0.2),0px 2px 2px 0px rgba(0,0,0,0.14),0px 1px 5px 0px rgba(0,0,0,0.12)","0px 3px 3px -2px rgba(0,0,0,0.2),0px 3px 4px 0px rgba(0,0,0,0.14),0px 1px 8px 0px rgba(0,0,0,0.12)","0px 2px 4px -1px rgba(0,0,0,0.2),0px 4px 5px 0px rgba(0,0,0,0.14),0px 1px 10px 0px rgba(0,0,0,0.12)","0px 3px 5px -1px rgba(0,0,0,0.2),0px 5px 8px 0px rgba(0,0,0,0.14),0px 1px 14px 0px rgba(0,0,0,0.12)","0px 3px 5px -1px rgba(0,0,0,0.2),0px 6px 10px 0px rgba(0,0,0,0.14),0px 1px 18px 0px rgba(0,0,0,0.12)","0px 4px 5px -2px rgba(0,0,0,0.2),0px 7px 10px 1px rgba(0,0,0,0.14),0px 2px 16px 1px rgba(0,0,0,0.12)","0px 5px 5px -3px rgba(0,0,0,0.2),0px 8px 10px 1px rgba(0,0,0,0.14),0px 3px 14px 2px rgba(0,0,0,0.12)","0px 5px 6px -3px rgba(0,0,0,0.2),0px 9px 12px 1px rgba(0,0,0,0.14),0px 3px 16px 2px rgba(0,0,0,0.12)","0px 6px 6px -3px rgba(0,0,0,0.2),0px 10px 14px 1px rgba(0,0,0,0.14),0px 4px 18px 3px rgba(0,0,0,0.12)","0px 6px 7px -4px rgba(0,0,0,0.2),0px 11px 15px 1px rgba(0,0,0,0.14),0px 4px 20px 3px rgba(0,0,0,0.12)","0px 7px 8px -4px rgba(0,0,0,0.2),0px 12px 17px 2px rgba(0,0,0,0.14),0px 5px 22px 4px rgba(0,0,0,0.12)","0px 7px 8px -4px rgba(0,0,0,0.2),0px 13px 19px 2px rgba(0,0,0,0.14),0px 5px 24px 4px rgba(0,0,0,0.12)","0px 7px 9px -4px rgba(0,0,0,0.2),0px 14px 21px 2px rgba(0,0,0,0.14),0px 5px 26px 4px rgba(0,0,0,0.12)","0px 8px 9px -5px rgba(0,0,0,0.2),0px 15px 22px 2px rgba(0,0,0,0.14),0px 6px 28px 5px rgba(0,0,0,0.12)","0px 8px 10px -5px rgba(0,0,0,0.2),0px 16px 24px 2px rgba(0,0,0,0.14),0px 6px 30px 5px rgba(0,0,0,0.12)","0px 8px 11px -5px rgba(0,0,0,0.2),0px 17px 26px 2px rgba(0,0,0,0.14),0px 6px 32px 5px rgba(0,0,0,0.12)","0px 9px 11px -5px rgba(0,0,0,0.2),0px 18px 28px 2px rgba(0,0,0,0.14),0px 7px 34px 6px rgba(0,0,0,0.12)","0px 9px 12px -6px rgba(0,0,0,0.2),0px 19px 29px 2px rgba(0,0,0,0.14),0px 7px 36px 6px rgba(0,0,0,0.12)","0px 10px 13px -6px rgba(0,0,0,0.2),0px 20px 31px 3px rgba(0,0,0,0.14),0px 8px 38px 7px rgba(0,0,0,0.12)","0px 10px 13px -6px rgba(0,0,0,0.2),0px 21px 33px 3px rgba(0,0,0,0.14),0px 8px 40px 7px rgba(0,0,0,0.12)","0px 10px 14px -6px rgba(0,0,0,0.2),0px 22px 35px 3px rgba(0,0,0,0.14),0px 8px 42px 7px rgba(0,0,0,0.12)","0px 11px 14px -7px rgba(0,0,0,0.2),0px 23px 36px 3px rgba(0,0,0,0.14),0px 9px 44px 8px rgba(0,0,0,0.12)","0px 11px 15px -7px rgba(0,0,0,0.2),0px 24px 38px 3px rgba(0,0,0,0.14),0px 9px 46px 8px rgba(0,0,0,0.12)"],"typography":{"htmlFontSize":16,"fontFamily":""Roboto", "Helvetica", "Arial", sans-serif","fontSize":14,"fontWeightLight":300,"fontWeightRegular":400,"fontWeightMedium":500,"fontWeightBold":700,"h1":{"fontFamily":""Roboto", "Helvetica", "Arial", sans-serif","fontWeight":300,"fontSize":"6rem","lineHeight":1.167,"letterSpacing":"-0.01562em"},"h2":{"fontFamily":""Roboto", "Helvetica", "Arial", sans-serif","fontWeight":300,"fontSize":"3.75rem","lineHeight":1.2,"letterSpacing":"-0.00833em"},"h3":{"fontFamily":""Roboto", "Helvetica", "Arial", sans-serif","fontWeight":400,"fontSize":"3rem","lineHeight":1.167,"letterSpacing":"0em"},"h4":{"fontFamily":""Roboto", "Helvetica", "Arial", sans-serif","fontWeight":400,"fontSize":"2.125rem","lineHeight":1.235,"letterSpacing":"0.00735em"},"h5":{"fontFamily":""Roboto", "Helvetica", "Arial", sans-serif","fontWeight":400,"fontSize":"1.5rem","lineHeight":1.334,"letterSpacing":"0em"},"h6":{"fontFamily":""Roboto", "Helvetica", "Arial", sans-serif","fontWeight":500,"fontSize":"1.25rem","lineHeight":1.6,"letterSpacing":"0.0075em"},"subtitle1":{"fontFamily":""Roboto", "Helvetica", "Arial", sans-serif","fontWeight":400,"fontSize":"1rem","lineHeight":1.75,"letterSpacing":"0.00938em"},"subtitle2":{"fontFamily":""Roboto", "Helvetica", "Arial", sans-serif","fontWeight":500,"fontSize":"0.875rem","lineHeight":1.57,"letterSpacing":"0.00714em"},"body1":{"fontFamily":""Roboto", "Helvetica", "Arial", sans-serif","fontWeight":400,"fontSize":"1rem","lineHeight":1.5,"letterSpacing":"0.00938em"},"body2":{"fontFamily":""Roboto", "Helvetica", "Arial", sans-serif","fontWeight":400,"fontSize":"0.875rem","lineHeight":1.43,"letterSpacing":"0.01071em"},"button":{"fontFamily":""Roboto", "Helvetica", "Arial", sans-serif","fontWeight":500,"fontSize":"0.875rem","lineHeight":1.75,"letterSpacing":"0.02857em","textTransform":"uppercase"},"caption":{"fontFamily":""Roboto", "Helvetica", "Arial", sans-serif","fontWeight":400,"fontSize":"0.75rem","lineHeight":1.66,"letterSpacing":"0.03333em"},"overline":{"fontFamily":""Roboto", "Helvetica", "Arial", sans-serif","fontWeight":400,"fontSize":"0.75rem","lineHeight":2.66,"letterSpacing":"0.08333em","textTransform":"uppercase"}},"shape":{"borderRadius":4},"transitions":{"easing":{"easeInOut":"cubic-bezier(0.4, 0, 0.2, 1)","easeOut":"cubic-bezier(0.0, 0, 0.2, 1)","easeIn":"cubic-bezier(0.4, 0, 1, 1)","sharp":"cubic-bezier(0.4, 0, 0.6, 1)"},"duration":{"shortest":150,"shorter":200,"short":250,"standard":300,"complex":375,"enteringScreen":225,"leavingScreen":195}},"zIndex":{"mobileStepper":1000,"speedDial":1050,"appBar":1100,"drawer":1200,"modal":1300,"snackbar":1400,"tooltip":1500}}}}
HOCs were then removed, so this is a really basic project now, and it still has issues in IE. The fact appears to be React components are not correctly transpiled in IE.