Node 10 - assets.flatMap is not a function

🐛 bug report

Parcel 2 does not work on Node 10 anymore

Building SimpleTable.tsx...
Error: assets.flatMap is not a function
× Build failed.
TypeError: assets.flatMap is not a function
    at Transformation.runPipelines (D:\a\solid-simple-table\solid-simple-table\node_modules\@parcel\core\lib\Transformation.js:368:131)

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

Everything is available here: https://github.com/aminya/solid-simple-table

  "targets": {
    "main": {
      "context": "browser",
      "engines": {
        "browsers": "> 0.25%"
      },
      "includeNodeModules": true,
      "isLibrary": true
    },
    "module": {
      "context": "browser",
      "engines": {
        "browsers": "Chrome 76"
      },
      "includeNodeModules": false,
      "isLibrary": true
    },
}

babel

{
  "presets": ["babel-preset-solid", "@babel/preset-typescript", "@parcel/babel-preset-env"],
  "plugins": ["@parcel/babel-plugin-transform-runtime"]
}

🤔 Expected Behavior

Node 10 should work like other versions

😯 Current Behavior

It does not work

💁 Possible Solution

🔦 Context

💻 Code Sample

https://github.com/aminya/solid-simple-table

🌍 Your Environment

Software	Version(s)
Parcel	^2.0.0-nightly.489
Node	10
npm/Yarn	6
Operating System	Win 10

[mischnic]

We have dropped Node 10 support because it’s a maintenance LTS version already.

Didn’t you get a warning from npm? We do specify "engines": {"node": ">= 12.0.0"}: https://unpkg.com/browse/@parcel/core@2.0.0-nightly.500/package.json

[aminya]

I wrote a custom script to install and build the project using Parcel 1, 2-beta or 2-nightly based on the Node version.

const child_process = require('child_process');
const path = require('path')

const NodeVersion = parseFloat(process.version.match(/^v(\d+\.\d+)/)[1])

if ( NodeVersion < 10) {
  child_process.execSync(`npm install parcel@1`, {stdio: 'inherit'})
  child_process.execSync(`node ${path.resolve('./node_modules/parcel/dist/bin/parcel')} parcel build --target main --target types --target module --experimental-scope-hoisting src/SimpleTable.tsx`, {stdio: 'inherit'})
} 
else if (NodeVersion < 12) {
  child_process.execSync(`npm install parcel@2.0.0-beta.1`, {stdio: 'inherit'})
  child_process.execSync(`node ${path.resolve('./node_modules/parcel/dist/bin/parcel')} parcel build --target main --target types --target module src/SimpleTable.tsx`, {stdio: 'inherit'})
} else {
  child_process.execSync(`node ${path.resolve('./node_modules/parcel/dist/bin/parcel')} parcel build --target main --target types --target module src/SimpleTable.tsx`, {stdio: 'inherit'})
}