A quick and dirty node shell script to get all of the production licenses from a package.

licenses.js

#!/usr/bin/env node

const { exec } = require("child_process")

async function run() {
  let deps
  exec("npm list --prod --depth=0 --json", (error, stdout, stderr) => {
    if (error) {
      console.log(`error: ${error.message}`)
      return
    }
    if (stderr) {
      console.log(`stderr: ${stderr}`)
      return
    }
    deps = JSON.parse(stdout)
    // console.log(deps)
    let list = []
    for (let i in deps.dependencies) {
      list.push(deps.dependencies[i].from)
    }
    exec(
      `npx license-checker --packages "${list.join(";")}" --json`,
      (error, stdout, stderr) => {
        if (error) {
          console.log(`error: ${error.message}`)
          return
        }
        if (stderr) {
          console.log(`stderr: ${stderr}`)
          return
        }
        deps = JSON.parse(stdout)
        console.log(deps)
      }
    )
  })
}
run()