Error: Reflect.getMetadata is not a function

[VictorLeach96]

I've just upgraded to the latest version of Webpack in my repo and am getting the following error, do you have any ideas what this could be?

Thanks!

/Users/victor/Documents/Dev/Frameworks/MEAN/Test/node_modules/inversify/lib/planning/planner.js:107
            throw new Error(error.message);
                  ^
Error: Reflect.getMetadata is not a function
    at _createSubRequests (/Users/victor/Documents/Dev/Frameworks/MEAN/Test/node_modules/inversify/lib/planning/planner.js:107:19)
    at Object.plan (/Users/victor/Documents/Dev/Frameworks/MEAN/Test/node_modules/inversify/lib/planning/planner.js:126:5)
    at /Users/victor/Documents/Dev/Frameworks/MEAN/Test/node_modules/inversify/lib/container/container.js:239:37
    at Container._get (/Users/victor/Documents/Dev/Frameworks/MEAN/Test/node_modules/inversify/lib/container/container.js:232:44)
    at Container.get (/Users/victor/Documents/Dev/Frameworks/MEAN/Test/node_modules/inversify/lib/container/container.js:191:21)
    at e.value (/Users/victor/Documents/Dev/Frameworks/MEAN/Test/node_modules/javascript-obfuscator/dist/webpack:/src/container/InversifyContainerFacade.ts:121:34)
    at Function.value (/Users/victor/Documents/Dev/Frameworks/MEAN/Test/node_modules/javascript-obfuscator/dist/webpack:/src/JavaScriptObfuscator.ts:26:17)
    at /Users/victor/Documents/Dev/Frameworks/MEAN/Test/node_modules/webpack-obfuscator/index.js:44:66
    at Array.forEach (native)
    at Compilation.<anonymous> (/Users/victor/Documents/Dev/Frameworks/MEAN/Test/node_modules/webpack-obfuscator/index.js:22:23)
    at next (/Users/victor/Documents/Dev/Frameworks/MEAN/Test/node_modules/tapable/lib/Tapable.js:186:14)
    at Compilation.compilation.plugin (/Users/victor/Documents/Dev/Frameworks/MEAN/Test/node_modules/webpack/lib/optimize/UglifyJsPlugin.js:230:5)
    at Compilation.applyPluginsAsyncSeries (/Users/victor/Documents/Dev/Frameworks/MEAN/Test/node_modules/tapable/lib/Tapable.js:188:13)
    at self.applyPluginsAsync.err (/Users/victor/Documents/Dev/Frameworks/MEAN/Test/node_modules/webpack/lib/Compilation.js:635:10)
    at Compilation.applyPluginsAsyncSeries (/Users/victor/Documents/Dev/Frameworks/MEAN/Test/node_modules/tapable/lib/Tapable.js:177:46)
    at sealPart2 (/Users/victor/Documents/Dev/Frameworks/MEAN/Test/node_modules/webpack/lib/Compilation.js:631:9)
    at Compilation.applyPluginsAsyncSeries (/Users/victor/Documents/Dev/Frameworks/MEAN/Test/node_modules/tapable/lib/Tapable.js:177:46)
    at Compilation.seal (/Users/victor/Documents/Dev/Frameworks/MEAN/Test/node_modules/webpack/lib/Compilation.js:579:8)
    at /Users/victor/Documents/Dev/Frameworks/MEAN/Test/node_modules/webpack/lib/Compiler.js:493:16
    at /Users/victor/Documents/Dev/Frameworks/MEAN/Test/node_modules/tapable/lib/Tapable.js:271:11
    at _addModuleChain (/Users/victor/Documents/Dev/Frameworks/MEAN/Test/node_modules/webpack/lib/Compilation.js:481:11)
    at processModuleDependencies.err (/Users/victor/Documents/Dev/Frameworks/MEAN/Test/node_modules/webpack/lib/Compilation.js:452:13)

[sanex3339]

Please try to reproduce this error on clear webpack config without any other plugins and environments.

Because first thing that obfuscator does - requiring reflect-metadata
https://github.com/javascript-obfuscator/javascript-obfuscator/blob/master/src/JavaScriptObfuscator.ts#L1

[ezze]

@sanex3339, I'm new to JavaScript obfuscator and faced the same issue trying to add your plugin 0.13.0 to my private project. Here is a list of my plugins (I append obfuscator plugin to the end of the list):

plugins: [
    new webpack.NoEmitOnErrorsPlugin(),
    new webpack.DefinePlugin({
        'process.env.NODE_ENV': JSON.stringify(NODE_ENV),
        NODE_ENV: JSON.stringify(NODE_ENV),
        VERSION: JSON.stringify(packageJson.version)
    }),
    new HtmlPlugin({
        filename: path.resolve(__dirname, 'dist/index.html'),
        inject: false,
        template: htmlTemplate,
        title: 'RIPI GeoPort',
        meta: [{
            'http-equiv': 'Cache-Control',
            content: 'no-cache, no-store, must-revalidate'
        }, {
            'http-equiv': 'Pragma',
            content: 'no-cache'
        }, {
            'http-equiv': 'Expires',
            content: '0'
        }],
        appMountId: 'container',
        scripts: ['cesium/Cesium.js'],
        minify: {
            collapseWhitespace: NODE_ENV === 'production'
        }
    }),
    new FaviconsWepbackPlugin(
        path.resolve(__dirname, 'src/favicon.png')
    ),
    new webpack.ProvidePlugin({
        'Opentip': 'opentip/lib/opentip'
    }),
    new webpack.ContextReplacementPlugin(/moment[\/\\]locale$/, /en-gb|ru/),
    new webpack.optimize.CommonsChunkPlugin({
        name: 'vendor',
        minChunks: module => {
            return module.context && module.context.indexOf('node_modules') !== -1;
        }
    }),
    new webpack.optimize.CommonsChunkPlugin({
        name: 'manifest',
        minChunks: Infinity
    })
]

It's extended later by:

new ExtractTextPlugin({
    filename: 'css/[name].' + (NODE_ENV === 'development' ? '' : '[chunkhash:6].') + 'css',
    allChunks: true
}));

and

new webpack.optimize.UglifyJsPlugin({
    comments: false,
    compress: {
        warnings: false,
        drop_console: false,
        unsafe: false
    },
    sourceMap: false
});

depending on environment settings. I tried to disable some of them such as extract text, uglify, commons chunk, no emit on errors plugins but still get the same result. I can't disable all plugins because it will definitely break my build. Does it mean that obfuscator plugin is useless for me? It would be stange 'cause using listed plugins is a common use case.

[ezze]

Placing obfuscator first does not change anything:

plugins: [
    new ObfuscatorPlugin(),
    ...
]

Here is stack trace:

/home/ezze/Development/geoport/node_modules/inversify/lib/planning/metadata_reader.js:8
        var compilerGeneratedMetadata = Reflect.getMetadata(METADATA_KEY.PARAM_TYPES, constructorFunc);
                                                ^
TypeError: Reflect.getMetadata is not a function
    at MetadataReader.getConstructorMetadata (/home/ezze/Development/geoport/node_modules/inversify/lib/planning/metadata_reader.js:8:49)
    at getTargets (/home/ezze/Development/geoport/node_modules/inversify/lib/planning/reflection_utils.js:15:35)
    at Object.getDependencies (/home/ezze/Development/geoport/node_modules/inversify/lib/planning/reflection_utils.js:10:19)
    at /home/ezze/Development/geoport/node_modules/inversify/lib/planning/planner.js:106:51
    at Array.forEach (<anonymous>)
    at _createSubRequests (/home/ezze/Development/geoport/node_modules/inversify/lib/planning/planner.js:94:20)
    at Object.plan (/home/ezze/Development/geoport/node_modules/inversify/lib/planning/planner.js:129:9)
    at /home/ezze/Development/geoport/node_modules/inversify/lib/container/container.js:243:37
    at Container._get (/home/ezze/Development/geoport/node_modules/inversify/lib/container/container.js:236:44)
    at Container.get (/home/ezze/Development/geoport/node_modules/inversify/lib/container/container.js:195:21)
    at e.value (/home/ezze/Development/geoport/node_modules/javascript-obfuscator/dist/webpack:/src/container/InversifyContainerFacade.ts:126:34)
    at Function.value (/home/ezze/Development/geoport/node_modules/javascript-obfuscator/dist/webpack:/src/JavaScriptObfuscatorFacade.ts:26:17)
    at /home/ezze/Development/geoport/node_modules/webpack-obfuscator/index.js:49:66
    at Array.forEach (<anonymous>)
    at Compilation.<anonymous> (/home/ezze/Development/geoport/node_modules/webpack-obfuscator/index.js:27:23)
    at Compilation.applyPluginsAsyncSeries (/home/ezze/Development/geoport/node_modules/webpack/node_modules/tapable/lib/Tapable.js:206:13)