Test the library with undefined and production NODE_ENV.

changelog.md

@@ -5,6 +5,7 @@
 ### Patch
 
 - Remove redundant uses of `this` in the internal `GraphQLQuery` component constructor.
+- Test the library with undefined and production `NODE_ENV`.
 
 ## 4.0.0
 

package.json

@@ -84,12 +84,13 @@
     "prepare:js": "babel src -d lib",
     "prepare:jsdoc": "jsdoc-md",
     "prepare:prettier": "prettier 'lib/**/*.{mjs,js}' readme.md --write",
-    "test": "npm run test:eslint && npm run test:prettier && npm run test:size && npm run test:mjs && npm run test:js",
+    "test": "npm run test:eslint && npm run test:prettier && npm run test:lib && NODE_ENV=production npm run test:lib",
     "test:eslint": "eslint . --ext mjs,js",
     "test:prettier": "prettier '**/*.{json,yml,md}' -l",
     "test:size": "size-limit",
-    "test:mjs": "node --experimental-modules --no-warnings lib/test | tap-mocha-reporter spec",
-    "test:js": "node lib/test | tap-mocha-reporter spec",
+    "test:lib": "npm run test:lib:mjs && npm run test:lib:js",
+    "test:lib:mjs": "node --experimental-modules --no-warnings lib/test | tap-mocha-reporter spec",
+    "test:lib:js": "node  lib/test | tap-mocha-reporter spec",
     "prepublishOnly": "npm run prepare && npm test",
     "watch": "watch 'npm run prepublishOnly --silent' src --interval 1"
   },

src/test.mjs

@@ -9,6 +9,13 @@ import reactDom from 'react-dom/server'
 import t from 'tap'
 import { GraphQL, Provider, Query, preload } from '.'
 
+// eslint-disable-next-line no-console
+console.log(
+  `Testing ${
+    process.execArgv.includes('--experimental-modules') ? 'ESM' : 'CJS'
+  } library with ${process.env.NODE_ENV} NODE_ENV…\n\n`
+)
+
 const EPOCH_QUERY = /* GraphQL */ `
   {
     epoch {