setup lib

.editorconfig

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+root = true
+
+[*]
+indent_style = tab
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.yml]
+indent_style = space
+indent_size = 2

.gitattributes

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+* text=auto eol=lf

.github/workflows/main.yml

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+name: CI
+on:
+  - push
+  - pull_request
+jobs:
+  test:
+    name: Node.js ${{ matrix.node-version }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        node-version:
+          - 20
+          - 18
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+      - run: npm install
+      - run: npm test

.gitignore

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+node_modules
+yarn.lock

.npmrc

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+package-lock=false

index.d.ts

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+/**
+Check if Electron is running in development.
+
+This package must be used from the Electron main process.
+
+You can force development mode by setting the `ELECTRON_IS_DEV` environment variable to `1`.
+
+@example
+```
+import isDev from 'electron-is-dev';
+
+if (isDev) {
+	console.log('Running in development');
+} else {
+	console.log('Running in production');
+}
+```
+*/
+declare const isDev: boolean;
+
+export default isDev;

index.js

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+'use strict';
+
+let isDev = false;
+const { protocol, hostname } = window.location;
+
+
+
+	if(
+		(protocol === 'http:' || protocol === 'https:') ||
+		(hostname === 'localhost' || hostname.startsWith('localhost:'))
+
+	) {
+		isDev = true;
+	}
+
+module.exports.isDev = isDev;
+
+

index.test-d.ts

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+import {expectType} from 'tsd';
+import isDev from './index.js';
+
+expectType<boolean>(isDev);

package.json

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+{
+	"name": "electron-vite-is-dev",
+	"version": "0.0.1",
+	"description": "Check if Electron-Vite is running in development",
+	"license": "Apache 2.0",
+	"repository": "Safouene1/electron-vite-is-dev",
+	"author": {
+		"name": "Safouen Turki",
+		"email": "tsafouen@gmail.com",
+		"url": "safouen.substack.com"
+	},
+	"type": "module",
+	"exports": {
+		"types": "./index.d.ts",
+		"default": "./index.js"
+	},
+	"sideEffects": false,
+	"engines": {
+		"node": ">=18"
+	},
+	"scripts": {
+		"test": "xo && tsd"
+	},
+	"files": [
+		"index.js",
+		"index.d.ts"
+	],
+	"keywords": [
+		"electron",
+		"dev",
+		"electron-vite",
+		"development",
+		"mode",
+		"prod",
+		"production",
+		"detect",
+		"check",
+		"debug",
+		"app"
+	],
+	"devDependencies": {
+		"tsd": "^0.30.3",
+		"xo": "^0.56.0"
+	}
+}