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Disable FSI/PDI isolating on IE11 #178

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Disable FSI/PDI isolating on IE11 #178

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6 changes: 5 additions & 1 deletion src/web/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -14,7 +14,11 @@ import { documentReady, getResourceLinks, getMeta } from './util';
// used to create new `MessageContext` objects for a given `lang` with selected
// builtin functions.
function createContext(lang) {
return new MessageContext(lang);
// IE11 renders FSI and PDI as mojibakes so we turn them off.
const isIE11 = navigator.userAgent.indexOf('Trident') > -1;
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I'd change that to:

const isIE = !!document.documentMode;

The less UA-sniffing the better; UA can always change while no browser should ever implement the non-standard document.documentMode.

return new MessageContext(lang, {
useIsolating: !isIE11
});
}

// Called for every named Localization declared via <link name=…> elements.
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