(3.8.7 extension) the *this* in main.ts `export const methods` changes?

[cinast]

Cocos Creator version

3.8.7

System information

win11

Issue description

in methods.openImportSVG I found this is not methods but a Package obj like object
I sreached in whole range of project, include cc.d.ts and similar d.ts
and ur doc seems have no introdution about this and no record at github (sreached)

I wonder why

// this of methods
let Package: {
    json: PackageJSON;
    panels: [];
    enabled: true;
    invalid: false;
    path: "";
    module: {
        load: [Function];
        unload: [Function];
        methods: { String: Function };
    };
    [K: string]: any;
};

Relevant error log output

2025-12-28 11:58:25 - log: Package {
json: {
'$schema': './@types/schema/package/index.json',
package_version: 2,
name: 'cocos-svg-series',
version: '1.0.0',
author: 'Cinast',
editor: '>=3.0.0',
scripts: {
preinstall: 'node ./scripts/preinstall.js',
build: 'tsc',
watch: 'tsc -w'
},
description: 'i18n:cocos-svg-series.description',
main: './dist/main.js',
panels: {},
contributions: {
importer: [Object],
menu: [Array],
messages: [Object],
shortcuts: [Array],
'asset-db': [Object],
scene: [Object]
},
devDependencies: {
'@cocos/creator-types': '^3.8.7',
'@types/node': '^18.17.1',
typescript: '^5.9.3'
},
dependencies: { flubber: '^0.4.2', 'svg.js': '^2.7.1' },
debug: false
},
panels: [],
enabled: true,
invalid: false,
path: 'C:\Users\aaeow\Desktop\code\store\Cocos\the_silent_mill\extensions\cocos-svg-series',
module: {
methods: {
openImportSVG: [AsyncFunction: openImportSVG],
openImportSVGBatch: [AsyncFunction: openImportSVGBatch],
importSVGFile: [AsyncFunction: importSVGFile],
importSVGBatch: [AsyncFunction: importSVGBatch],
getSVGPreview: [AsyncFunction: getSVGPreview],
refreshAssetDatabase: [AsyncFunction: refreshAssetDatabase],
refreshAssetDatabaseMultiple: [AsyncFunction: refreshAssetDatabaseMultiple],
isValidSVG: [Function: isValidSVG],
parseSVGInfo: [Function: parseSVGInfo],
parseDimension: [Function: parseDimension],
getOrCreateUUID: [AsyncFunction: getOrCreateUUID],
generateUUID: [Function: generateUUID],
getRelativePath: [Function: getRelativePath],
getCommonDirectory: [Function: getCommonDirectory]
},
load: [Function: load],
unload: [Function: unload]
}
}
2025-12-28 11:58:25 - log: undefined
2025-12-28 11:58:25 - log: {}
2025-12-28 11:58:25 - error: 打开导入对话框失败: TypeError: this.importSVGFile is not a function
at Package.openImportSVG (C:\Users\aaeow\Desktop\code\store\Cocos\the_silent_mill\extensions\cocos-svg-series\source\main.ts:27:44)
at C:\ProgramData\cocos\editors\Creator\3.8.7\resources\app.asar\node_modules@editor\package\dist\browser\index.js:1:3396

Steps to reproduce

1. make a blank extension
2. main.ts to package.json.main
3. export const methods = {}
4. methods.test = ()=>{console.log(this)}

Minimal reproduction project

No response

[cinast]

very confusing

[cinast]

source at https://github.com/cinast/tmp

[cinast]

...