alex/yomichan
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use duck typing for event listener

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siikamiika 2020-04-04 16:59:17 +03:00
parent 067c26982e
commit 123e725049
1 changed files with 29 additions and 26 deletions
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11
ext/mixed/js/core.js
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@ -325,7 +325,13 @@ const yomichan = (() => {
reject = _reject;
});
if (eventHandler === chrome.runtime.onMessage) {
if (
typeof eventHandler.addListener === 'undefined' ||
typeof eventHandler.removeListener === 'undefined'
) {
throw new Error('Event handler type not supported');
}
const runtimeMessageCallback = ({action, params}, sender, sendResponse) => {
let timeoutId = null;
if (timeout !== null) {
@ -350,9 +356,6 @@ const yomichan = (() => {
};
eventHandler.addListener(runtimeMessageCallback);
} else {
throw new Error('Event handler type not supported');
}
return listenerPromise;
}