react-native-builder-bob/lib/src/utils/spawn.js

CLI to build JavaScript files for React Native libraries

import crossSpawn from 'cross-spawn';
export const spawn = async (...args) => {
    return new Promise((resolve, reject) => {
        const child = crossSpawn(...args);
        let stdout = '';
        let stderr = '';
        child.stdout?.setEncoding('utf8');
        child.stdout?.on('data', (data) => {
            stdout += data;
        });
        child.stderr?.setEncoding('utf8');
        child.stderr?.on('data', (data) => {
            stderr += data;
        });
        child.once('error', reject);
        child.once('close', (code) => {
            if (code === 0) {
                resolve(stdout.trim());
            }
            else {
                const error = new Error(stderr.trim() || `Command exited with code ${String(code)}`);
                Object.defineProperties(error, {
                    stdout: {
                        enumerable: false,
                        value: stdout,
                    },
                    stderr: {
                        enumerable: false,
                        value: stderr,
                    },
                    code: {
                        enumerable: false,
                        value: code,
                    },
                });
                reject(error);
            }
        });
    });
};
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