package-preview/lib/npmPack.js

Creates a production preview of a package

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const spawn = require("cross-spawn");
function npmPack(dependencyPath) {
    return new Promise((resolve, reject) => {
        const proc = spawn('npm', ['pack', '--ignore-scripts'], {
            cwd: dependencyPath,
        });
        let stdout = '';
        let stderr = '';
        proc.stdout.on('data', (data) => {
            stdout += data.toString();
        });
        proc.stderr.on('data', (data) => {
            stderr += data.toString();
        });
        proc.on('error', reject);
        proc.on('close', (code) => {
            if (code > 0) {
                console.log(stdout);
                console.log(stderr);
                return reject(new Error('Exit code ' + code));
            }
            // The last line contains the generated tgz filename
            stdout = stdout.trim();
            const parts = stdout.split('\n');
            const tgzFilename = parts[parts.length - 1];
            return resolve(tgzFilename);
        });
    });
}
exports.default = npmPack;
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