web/scripts/build.js

const { exec } = require('child_process')

const envList = process.env.task.split(',')
if (envList.length === 0) {
    console.error('Error: task environment variable is not defined.')
} else {
    const promises = envList.map((env) => {
        return new Promise((resolve, reject) => {
            exec(`npm run build:${env}`, (error, stdout, stderr) => {
                if (error) {
                    console.error(`exec error: ${error}`)
                    reject(error)
                } else {
                    console.log(`stdout: ${stdout}`)
                    console.error(`stderr: ${stderr}`)
                    resolve()
                }
            })
        })
    })

    Promise.all(promises)
        .then(() => console.log('All builds completed successfully.'))
        .catch((err) => console.error('Error occurred during build:', err))
}