node/lib/internal/bootstrap
Joyee Cheung ce8f085d26
sea: support embedding assets
With this patch:

Users can now include assets by adding a key-path dictionary
to the configuration as the `assets` field. At build time, Node.js
would read the assets from the specified paths and bundle them into
the preparation blob. In the generated executable, users can retrieve
the assets using the `sea.getAsset()` and `sea.getAssetAsBlob()` API.

```json
{
  "main": "/path/to/bundled/script.js",
  "output": "/path/to/write/the/generated/blob.blob",
  "assets": {
    "a.jpg": "/path/to/a.jpg",
    "b.txt": "/path/to/b.txt"
  }
}
```

The single-executable application can access the assets as follows:

```cjs
const { getAsset } = require('node:sea');
// Returns a copy of the data in an ArrayBuffer
const image = getAsset('a.jpg');
// Returns a string decoded from the asset as UTF8.
const text = getAsset('b.txt', 'utf8');
// Returns a Blob containing the asset.
const blob = getAssetAsBlob('a.jpg');
```

Drive-by: update the  documentation to include a section dedicated
to the injected main script and refer to it as "injected main
script" instead of "injected module" because it's a script, not
a module.

PR-URL: https://github.com/nodejs/node/pull/50960
Refs: https://github.com/nodejs/single-executable/issues/68
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>
2024-02-02 15:25:34 +01:00
..
switches vm: support using the default loader to handle dynamic import() 2024-02-01 11:45:42 +00:00
web lib: define FormData and fetch etc. in the built-in snapshot 2024-01-31 17:44:23 +00:00
node.js src: add process.loadEnvFile and util.parseEnv 2024-01-23 18:46:26 +00:00
realm.js sea: support embedding assets 2024-02-02 15:25:34 +01:00
shadow_realm.js module: bootstrap module loaders in shadow realm 2023-11-13 22:09:47 +08:00