ultrawidify/scripts/remove-evals.js

54 lines
1.4 KiB
JavaScript

#!/usr/bin/env node
const path = require('path');
const fs = require('fs');
const BUNDLE_DIR = path.join(__dirname, `../dist-${process.env.BROWSER === 'firefox' ? 'ff' : process.env.BROWSER}`);
const bundles = [
'csui/csui-popup.js',
];
const evalRegexForProduction = /;([a-z])=function\(\){return this}\(\);try{\1=\1\|\|Function\("return this"\)\(\)\|\|\(0,eval\)\("this"\)}catch\(t\){"object"==typeof window&&\(\1=window\)}/g;
const evalRegexForDevelopment = /;\\r\\n\\r\\n\/\/ This works in non-strict mode(?:.){1,304}/g;
const removeEvals = (file) => {
console.info(`Removing eval() from ${file}`);
return new Promise((resolve, reject) => {
fs.readFile(file, 'utf8', (err, data) => {
if(err) {
reject(err);
return;
}
const regex = process.env.NODE_ENV === 'production' ? evalRegexForProduction : evalRegexForDevelopment;
if(!regex.test(data)) {
reject(`No CSP specific code found in ${file}.`);
return;
}
data = data.replace(regex, '=window;');
fs.writeFile(file, data, (err) => {
if(err) {
reject(err);
return;
}
resolve();
});
});
});
};
const main = () => {
bundles.forEach(bundle => {
removeEvals(path.join(BUNDLE_DIR, bundle))
.then(() => console.info(`Bundle ${bundle}: OK`))
.catch(console.error);
});
};
main();