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vnu-jar.js

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#!/usr/bin/env node

'use strict';

const { execFile } = require('child_process');

const path = require('path');

const vnuJar = path.join(__dirname, 'build/dist/vnu.jar');

const vnu = {

check: async function (args = [], options = {}) {

const { resolveJava } = require('./vnu-java-downloader');

const javaCmd = await resolveJava();

const finalArgs = ['-jar', vnuJar, ...args];

return new Promise((resolve, reject) => {

const child = execFile(javaCmd, finalArgs, (error, stdout, stderr) => {

const output = [stdout, stderr].filter(Boolean).join('');

if (error) {

const errObj = new Error(output || error.message);

reject(errObj);

} else {

resolve(output);

}

});

});

}

};

const exported = new String(vnuJar);

exported.vnu = vnu;

module.exports = exported;

if (require.main === module) {

(async () => {

try {

const { resolveJava } = require('./vnu-java-downloader');

const javaCmd = await resolveJava();

const { spawn } = require('child_process');

const child = spawn(javaCmd,

['-jar', vnuJar, ...process.argv.slice(2)],

{ stdio: 'inherit' });

child.on('close', (code) => process.exit(code || 0));

} catch (err) {

console.error(err.message.trim());

// Set the exit code rather than calling process.exit(): exiting

// while the sockets from a failed download are still closing

// crashes Node with a libuv assertion on Windows.

process.exitCode = 1;

}

})();

}