23 lines
859 B
JavaScript
23 lines
859 B
JavaScript
'use strict';
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// preventing reregistration if reinjected by tabs.executeScript for whatever reason, just in case
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if (typeof self.oldCode !== 'string') {
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self.oldCode = (document.querySelector('body > pre') || document.body).textContent;
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chrome.runtime.onConnect.addListener(port => {
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if (port.name !== 'downloadSelf') return;
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port.onMessage.addListener(({id, force}) => {
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fetch(location.href, {mode: 'same-origin'})
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.then(r => r.text())
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.then(code => ({id, code: force || code !== self.oldCode ? code : null}))
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.catch(error => ({id, error: error.message || `${error}`}))
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.then(msg => {
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port.postMessage(msg);
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if (msg.code != null) self.oldCode = msg.code;
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});
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});
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});
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}
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// passing the result to tabs.executeScript
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self.oldCode; // eslint-disable-line no-unused-expressions
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