Parcel: MemberExpressions attempts to convert process.env.hasOwnProperty to a node

[EricRabil]

🐛 bug report

At /src/visitors/globals.js:26, Parcel is recognizing DotEnv's call to process.env.hasOwnProperty(...) and is attempting to convert it to a node, causing the babel converter to throw an exception.

🎛 Configuration (.babelrc, package.json, cli command)

.babelrc

{
    "presets": [
        ["env", {
            "targets": {
                "browsers": ["last 1 Chrome version"]
            }
        }]
    ]
}

package.json

{
  "name": "StormStarter",
  "version": "1.0.0",
  "main": "out/index.js",
  "repository": "https://github.com/EricRabil/StormStarter.git",
  "author": "EricRabil <[email protected]>",
  "license": "MIT",
  "dependencies": {
    "babel-polyfill": "^6.26.0",
    "bcrypt": "^2.0.1",
    "biguint-format": "^1.0.0",
    "cookie-parser": "^1.4.3",
    "express": "^4.16.3",
    "express-session": "^1.15.6",
    "flake-idgen": "^1.1.0",
    "fs-extra": "^6.0.0",
    "keymirror": "^0.1.1",
    "mongodb": "^3.0.7",
    "nobi": "^0.0.1",
    "parcel": "^1.8.1",
    "passport": "^0.4.0",
    "passport-local": "^1.0.0",
    "passport-unique-token": "^0.1.4",
    "pug": "^2.0.3",
    "superagent": "^3.8.3",
    "typeorm": "^0.2.5",
    "uws": "^10.148.0",
    "vue": "^2.5.16",
    "vue-hot-reload-api": "^2.3.0",
    "vue-router": "^3.0.1",
    "webpack": "^4.7.0",
    "winston": "2.4.0"
  },
  "devDependencies": {
    "@vue/component-compiler-utils": "^1.3.0",
    "babel-plugin-transform-runtime": "^6.23.0",
    "node-sass": "^4.9.0",
    "typescript": "^2.8.3",
    "vue-template-compiler": "^2.5.16"
  }
}

cli

parcel watch index.html -d ../../out/frontend

🤔 Expected Behavior

It should be able to compile

😯 Current Behavior

It throws the above error due to DotEnv

/Users/ericrabil/eric.git/StormStarter/node_modules/dotenv/lib/main.js: don't know how to turn this value into a node
    at Object.valueToNode (/Users/ericrabil/.config/yarn/global/node_modules/babel-types/lib/converters.js:349:9)
    at MemberExpression (/Users/ericrabil/.config/yarn/global/node_modules/parcel-bundler/src/visitors/globals.js:26:25)
    at c (/Users/ericrabil/.config/yarn/global/node_modules/babylon-walk/lib/index.js:149:9)
    at c (/Users/ericrabil/.config/yarn/global/node_modules/babylon-walk/lib/index.js:186:9)
    at c (/Users/ericrabil/.config/yarn/global/node_modules/babylon-walk/lib/index.js:186:9)
    at c (/Users/ericrabil/.config/yarn/global/node_modules/babylon-walk/lib/index.js:186:9)
    at c (/Users/ericrabil/.config/yarn/global/node_modules/babylon-walk/lib/index.js:183:11)
    at c (/Users/ericrabil/.config/yarn/global/node_modules/babylon-walk/lib/index.js:186:9)
    at c (/Users/ericrabil/.config/yarn/global/node_modules/babylon-walk/lib/index.js:183:11)
    at c (/Users/ericrabil/.config/yarn/global/node_modules/babylon-walk/lib/index.js:186:9)

💁 Possible Solution

In /src/visitors/globals.js at the MemberExpressions definition, check whether the inline access to process.env is a function call, and if so, do not attempt to coerce it to a node.

🔦 Context

The issue affects me by preventing the build process from completing.

I am spawning a parcel instance through child_process however the error occurs when running it from a standard CLI. I am compiling a TypeScript/Vue project and redirecting it to another directory.

💻 Code Sample

https://github.com/EricRabil/StormStarter

🌍 Your Environment

| Software | Version(s) |
| ---------------- | ---------- |
| Parcel | 1.7.1, 1.8.1
| Node | 10.2.1, 8.9.0
| npm/Yarn | 1.7.0
| Operating System | macOS 10.13.4

[Ronnie1734]

Had the same error in this project.

https://github.com/Tag-it/image-tagger/commit/3f9490efa2ff787aed940766835a472c4a05625c

[EricRabil]

@Ronnie1734 does yours still repro / have you found a fix?

[EricRabil]

Anyone?

[TrueCarry]

@EricRabil Hello. Just tried to use parcel and it can't load dotenv. To repro you need just two lines of code:

import dotenv from 'dotenv'
dotenv.config()

[jchu4483]

Getting the same error when trying to use dotenv in my project when running parcel too.

[Strajk]

@TrueCarry @jchu4483

Having same issue, have you been lucky solving it pls?

---

EDIT: Not a fix, but quick workaround is to use dotenv v4.0.0 - works well
https://github.com/motdotla/dotenv/releases/tag/v4.0.0

[manthis]

Same here, impossible to use dotenv with parcel. Any update on that subject?