Building a pure offline Meteor app

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Seems to be some questions about how one can use Meteor offline when there\'s no internet connection here on Stack Overflow, but I\'m interested in if it\'s possible to buil

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你的背包

2020-12-04 12:21
You can build a purely offline Meteor app but there are a few 'weird' compromises.
- Meteor is a bit forceful when it comes to making a DDP connection, so it is made to 127.0.0.1 as a sort of null loopback, since there is no server.
- Meteor already builds the app in this offline-only way since the Cordova system was introduced, so its just extracting that out pretty much. There are builds for server, web.cordova and browser.
1 ) Bundle your app and extract it out

I'll just make a random example out of the todo app (it requires a server side bit, but well ignore that)
```
meteor create --example todos
cd todos
meteor bundle ~/Desktop/app.tar.gz
cd Desktop
tar xvzf app.tar.gz
```
2) In bundle there is a directory at /programs/web.browser, this is the framework of your offline app so take that directory and put it somewhere.

3) There are two files with a hash as the filename. Rename them as app.js and app.css

4) There is a directory called app. Move all its contents up to the main directory, i.e
```
cd app
mv * ../
rm -r app
```
5) Create a index.html file with the following in it:
```
<!DOCTYPE html>
<html>

<head>
    <link rel="stylesheet" href="app.css?meteor_css_resource=true">
    <script type="text/javascript">
    __meteor_runtime_config__ = {
        "meteorRelease": "1.0.0",
        "ROOT_URL": "/",
        "ROOT_URL_PATH_PREFIX": "",
        "autoupdateVersion": "00000",
        "DDP_DEFAULT_CONNECTION_URL": "127.0.0.1"
    };
    </script>

    <script type="text/javascript" src="app.js"></script>

    <script type="text/javascript">
    if (typeof Package === 'undefined' ||
        !Package.webapp ||
        !Package.webapp.WebApp ||
        !Package.webapp.WebApp._isCssLoaded())
        console.log("Load Fail");
    </script>

    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1, user-scalable=0">
    <meta http-equiv="content-language" content="en">
    <meta name='apple-mobile-web-app-capable' content='yes' />
    <meta name='apple-mobile-web-app-status-bar-style' content='black' />
    <title>Your App</title>
</head>

<body>

</body>

</html>
```
and voila:

Keep in mind this app needs a server so its quite useless this way, but you can make a purely client side app if you wanted.

Other considerations:
- Use file based html paths for images, fonts and other files (file.jpg instead of /images/file.jpg)
- With iron router its a bit tricky but you can't use / you'll have to use index.html and relative paths
- You can remove redundant packages in meteor-platform that you will not use, such as autoupdate
- There are a few packages on atmosphere that help with data storage such as ground:db instead of mongo collections which require a server side.
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