How to solve the problem that the package size of the applet is too large?

.Currently, subcontracting of mini programs has the following restrictions:

The size of all subpackages of the entire applet should not exceed 20M
The size of a single subpackage/main package does not exceed 2M

Original project path:

├── app.js
├── app.json
├── app.wxss
├── packageA
│   └── pages
│       ├── cat
│       └── dog
├── packageB
│   └── pages
│       ├── apple
│       └── banana
├── pages
│   ├── index
│   └── logs
└── utils

Subpackage loading of applets

Subpackage configuration path

├── app.js
├── app.json
├── app.wxss
├── packageA
│   └── pages
│       ├── cat
│       └── dog
├── packageB
│   └── pages
│       ├── apple
│       └── banana
├── pages
│   ├── index
│   └── logs
└── utils

Packaging Principles

After declaration subpackages , it will subpackages be packaged according to the configuration path, and subpackages directories outside the configuration path will be packaged into the main package
The main package can also have its own pages, the outermost pages field.
subpackagesubpackage The root directory of a cannot be a subdirectory within another
tabBar The page must be inside the main package

Citation principle

packageA JS files cannot be required , but JS files within packageB the main package can be required ; this restriction is not imposed when using subpackage asynchronizationpackageA
packageA The template cannot be imported packageB , but packageA the template in the main package can be required
packageA unusable packageB resources, but can use packageA resources inside the main package,

Low version compatible

The compatibility of the old version of the client is handled by the WeChat background compilation. The background will compile two code packages, one is the code after subcontracting, and the other is the compatible code of the entire package. New clients use subpackages, while old clients still use the whole package. The full package will put subpackage the paths inside each page into pages.