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8-runtime-check.js

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'use strict';

const fs = require('node:fs/promises');

const hasPermission = (scope, reference) => {

const permissionApi = process.permission;

if (!permissionApi || typeof permissionApi.has !== 'function') {

return true;

}

return reference

? permissionApi.has(scope, reference)

: permissionApi.has(scope);

};

const main = async () => {

console.log('fs.read:', hasPermission('fs.read'));

const readConfig = hasPermission('fs.read', './config.json');

console.log('fs.read(config.json):', readConfig);

console.log('fs.write:', hasPermission('fs.write'));

console.log('net:', hasPermission('net'));

console.log('child:', hasPermission('child'));

console.log('worker:', hasPermission('worker'));

try {

const raw = await fs.readFile('./config.json', 'utf8');

console.log('config read ok:', raw.slice(0, 50) + '...');

} catch (err) {

console.error(err.code || err.name, err.message);

process.exitCode = 1;

}

};

main();