[Pkg-javascript-devel] Bug#977232: babeljs-node is unable to find system modules

[Pirate Praveen]

Package: node-babel7
Version: 7.12.9+~cs150.130.99-1
Severity: important

When trying to run mocha using babeljs-node command, it fails to find 
the modules installed in global nodejs directories.

pravi at mahishi:~/forge/js-team/node-window-size$ babeljs-node 
/usr/bin/mocha -R spec
internal/modules/cjs/loader.js:638
    throw err;
    ^

Error: Cannot find module 'v8flags'
    at Function.Module._resolveFilename 
(internal/modules/cjs/loader.js:636:15)
    at Function.Module._load (internal/modules/cjs/loader.js:562:25)
    at Module.require (internal/modules/cjs/loader.js:692:17)
    at require (internal/modules/cjs/helpers.js:25:18)
    at Object.<anonymous> 
(/usr/share/nodejs/@babel/node/lib/babel-node.js:3:39)
    at Module._compile (internal/modules/cjs/loader.js:778:30)
    at Object.Module._extensions..js 
(internal/modules/cjs/loader.js:789:10)
    at Module.load (internal/modules/cjs/loader.js:653:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
    at Function.Module._load (internal/modules/cjs/loader.js:585:3)

Once I manually set the NODE_PATH variable, it starts working. We 
should probably set these paths before calling babeljs-node command.


pravi at mahishi:~/forge/js-team/node-window-size$ export 
NODE_PATH=/usr/lib/nodejs:debian/tests/test_modules:/usr/share/nodejs:/usr/lib/x86_64-linux-gnu/nodejs/:/usr/share/nodejs/mocha/node_modules
pravi at mahishi:~/forge/js-team/node-window-size$ babeljs-node 
/usr/bin/mocha -R spec


  window-size
    ✓ should return an object with width and height
    ✓ should expose a `.get` method to get up-to-date size
    ✓ should get size from process.stdout
    ✓ should get size from process.stderr
    ✓ should get size from process.env
    ✓ should get size from tty
    ✓ should get size from tput
    utils
      ✓ should expose a `.get` method to get up-to-date size
      ✓ should get size from process.env
      ✓ should get size from tty
      ✓ should get size from tput


  11 passing (27ms)

pravi at mahishi:~/forge/js-team/node-window-size$

Some other things I found in this experiment,

1. node-environment-flags module which is required in 
/usr/share/nodejs/@babel/node/lib/babel-node.js is only available in 
/usr/share/nodejs/mocha/node_modules

Error: Cannot find module 'node-environment-flags'
    at Function.Module._resolveFilename 
(internal/modules/cjs/loader.js:636:15)
    at Function.Module._load (internal/modules/cjs/loader.js:562:25)
    at Module.require (internal/modules/cjs/loader.js:692:17)
    at require (internal/modules/cjs/helpers.js:25:18)
    at Object.<anonymous> 
(/usr/share/nodejs/@babel/node/lib/babel-node.js:7:52)
    at Module._compile (internal/modules/cjs/loader.js:778:30)
    at Object.Module._extensions..js 
(internal/modules/cjs/loader.js:789:10)
    at Module.load (internal/modules/cjs/loader.js:653:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
    at Function.Module._load (internal/modules/cjs/loader.js:585:3)

2. Also node-yargs is missing a dependency on node-define-property.

/usr/share/nodejs/yargs/yargs.js:1242
      else throw err
           ^

Error: Cannot find module 'define-property'
    at Function.Module._resolveFilename 
(internal/modules/cjs/loader.js:636:15)
    at Function.Module._load (internal/modules/cjs/loader.js:562:25)
    at Module.require (internal/modules/cjs/loader.js:692:17)
    at require (internal/modules/cjs/helpers.js:25:18)
    at Object.<anonymous> 
(/home/pravi/forge/js-team/node-window-size/index.js:10:14)