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Fix inpage.js event handler memory leak #6177

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merged 1 commit into from
Feb 18, 2019
Merged

Fix inpage.js event handler memory leak #6177

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9 changes: 5 additions & 4 deletions app/scripts/inpage.js
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Original file line number Diff line number Diff line change
Expand Up @@ -29,12 +29,13 @@ console.warn('ATTENTION: In an effort to improve user privacy, MetaMask ' +
* @param {Function} handler - event handler
* @param {boolean} remove - removes this handler after being triggered
*/
function onMessage (messageType, handler, remove) {
window.addEventListener('message', function ({ data }) {
function onMessage (messageType, callback, remove) {
const handler = function ({ data }) {
if (!data || data.type !== messageType) { return }
remove && window.removeEventListener('message', handler)
handler.apply(window, arguments)
})
callback.apply(window, arguments)
}
window.addEventListener('message', handler)
}

//
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