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Protect exportFunction with defineAs

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For #429
This commit is contained in:
kkapsner 2020-01-19 01:27:26 +01:00
parent 16f88a5daa
commit 363940014d
2 changed files with 12 additions and 0 deletions
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8
lib/extension.js
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@ -13,6 +13,7 @@
}
const browserAvailable = typeof browser !== "undefined";
const logging = require("./logging");
scope.inBackgroundScript = !!(
browserAvailable &&
@ -60,6 +61,13 @@
defineAs: name
};
const oldDescriptor = Object.getOwnPropertyDescriptor(wrappedContext, name);
if (oldDescriptor && !oldDescriptor.configurable){
logging.error(
"Unable to export function with the correct name", name,
"instead we have to use", exportedTry.name
);
return exportedTry;
}
const exported = exportFunction(func, context, options);
if (oldDescriptor){
Object.defineProperty(wrappedContext, name, oldDescriptor);