Image not loading with webpack bundle

[phatakrajan]

Environment Android

package.json

{
  "nativescript": {
    "id": "org.test.demo",
    "tns-android": {
      "version": "4.2.0"
    },
    "tns-ios": {
      "version": "4.2.0"
    }
  },
  "description": "Test",
  "license": "SEE LICENSE IN <your-license-filename>",
  "repository": "<fill-your-repository-here>",
  "dependencies": {
    "@angular/animations": "~6.1.0",
    "@angular/common": "~6.1.0",
    "@angular/compiler": "~6.1.0",
    "@angular/core": "~6.1.0",
    "@angular/forms": "~6.1.0",
    "@angular/http": "~6.1.0",
    "@angular/platform-browser": "~6.1.0",
    "@angular/platform-browser-dynamic": "~6.1.0",
    "@angular/router": "~6.1.0",
    "nativescript-angular": "^6.1.0",
    "nativescript-checkbox": "^3.0.3",
    "nativescript-drop-down": "^4.0.1",
    "nativescript-geolocation": "^4.3.1",
    "nativescript-google-maps-sdk": "^2.6.1",
    "nativescript-localize": "^3.0.6",
    "nativescript-ngx-fonticon": "^4.2.0",
    "nativescript-pdf-view": "^2.0.1",
    "nativescript-theme-core": "~1.0.4",
    "nativescript-ui-calendar": "^3.9.0",
    "nativescript-ui-sidedrawer": "^4.3.1",
    "nativescript-webview-interface": "^1.4.2",
    "reflect-metadata": "~0.1.8",
    "rxjs": "^6.0.0",
    "tns-core-modules": "^4.2.1",
    "zone.js": "^0.8.26"
  },
  "devDependencies": {
    "@angular/compiler-cli": "~6.1.0",
    "@nativescript/schematics": "~0.3.0",
    "@ngtools/webpack": "~6.2.0",
    "nativescript-dev-typescript": "^0.7.4",
    "nativescript-dev-webpack": "^0.16.3",
    "typescript": "~2.7.2"
  },
  "readme": "Test"
}

webpack

const { join, relative, resolve, sep } = require("path");

const webpack = require("webpack");
const nsWebpack = require("nativescript-dev-webpack");
const nativescriptTarget = require("nativescript-dev-webpack/nativescript-target");
const { nsReplaceBootstrap } = require("nativescript-dev-webpack/transformers/ns-replace-bootstrap");
const CleanWebpackPlugin = require("clean-webpack-plugin");
const CopyWebpackPlugin = require("copy-webpack-plugin");
const { BundleAnalyzerPlugin } = require("webpack-bundle-analyzer");
const { NativeScriptWorkerPlugin } = require("nativescript-worker-loader/NativeScriptWorkerPlugin");
const UglifyJsPlugin = require("uglifyjs-webpack-plugin");
const { AngularCompilerPlugin } = require("@ngtools/webpack");

module.exports = env => {
    // Add your custom Activities, Services and other Android app components here.
    const appComponents = [
        "tns-core-modules/ui/frame",
        "tns-core-modules/ui/frame/activity",
    ];

    const platform = env && (env.android && "android" || env.ios && "ios");
    if (!platform) {
        throw new Error("You need to provide a target platform!");
    }

    const projectRoot = __dirname;

    // Default destination inside platforms/<platform>/...
    const dist = resolve(projectRoot, nsWebpack.getAppPath(platform, projectRoot));
    const appResourcesPlatformDir = platform === "android" ? "Android" : "iOS";

    const {
        // The 'appPath' and 'appResourcesPath' values are fetched from
        // the nsconfig.json configuration file
        // when bundling with `tns run android|ios --bundle`.
        appPath = "src",
        appResourcesPath = "app/App_Resources",

        // You can provide the following flags when running 'tns run android|ios'
        aot, // --env.aot
        snapshot, // --env.snapshot
        uglify, // --env.uglify
        report, // --env.report
        sourceMap, // --env.sourceMap
    } = env;

    const appFullPath = resolve(projectRoot, appPath);
    const appResourcesFullPath = resolve(projectRoot, appResourcesPath);

    const entryModule = `${nsWebpack.getEntryModule(appFullPath)}.ts`;
    const entryPath = `.${sep}${entryModule}`;

    const ngCompilerPlugin = new AngularCompilerPlugin({
        hostReplacementPaths: nsWebpack.getResolver([platform, "tns"]),
        platformTransformers: aot ? [nsReplaceBootstrap(() => ngCompilerPlugin)] : null,
        mainPath: resolve(appPath, entryModule),
        tsConfigPath: join(__dirname, "tsconfig.tns.json"),
        skipCodeGeneration: !aot,
        sourceMap: !!sourceMap,
    });

    const config = {
        mode: uglify ? "production" : "development",
        context: appFullPath,
        watchOptions: {
            ignored: [
                appResourcesFullPath,
                // Don't watch hidden files
                "**/.*",
            ]
        },
        target: nativescriptTarget,
        entry: {
            bundle: entryPath,
        },
        output: {
            pathinfo: false,
            path: dist,
            libraryTarget: "commonjs2",
            filename: "[name].js",
            globalObject: "global",
        },
        resolve: {
            extensions: [".ts", ".js", ".scss", ".css"],
            // Resolve {N} system modules from tns-core-modules
            modules: [
                resolve(__dirname, "node_modules/tns-core-modules"),
                resolve(__dirname, "node_modules"),
                "node_modules/tns-core-modules",
                "node_modules",
            ],
            alias: {
                '~': appFullPath
            },
            symlinks: true
        },
        resolveLoader: {
            symlinks: false
        },
        node: {
            // Disable node shims that conflict with NativeScript
            "http": false,
            "timers": false,
            "setImmediate": false,
            "fs": "empty",
            "__dirname": false,
        },
        devtool: sourceMap ? "inline-source-map" : "none",
        optimization: {
            splitChunks: {
                cacheGroups: {
                    vendor: {
                        name: "vendor",
                        chunks: "all",
                        test: (module, chunks) => {
                            const moduleName = module.nameForCondition ? module.nameForCondition() : '';
                            return /[\\/]node_modules[\\/]/.test(moduleName) ||
                                appComponents.some(comp => comp === moduleName);
                        },
                        enforce: true,
                    },
                }
            },
            minimize: !!uglify,
            minimizer: [
                new UglifyJsPlugin({
                    uglifyOptions: {
                        parallel: true,
                        cache: true,
                        output: {
                            comments: false,
                        },
                        compress: {
                            // The Android SBG has problems parsing the output
                            // when these options are enabled
                            'collapse_vars': platform !== "android",
                            sequences: platform !== "android",
                        }
                    }
                })
            ],
        },
        module: {
            rules: [
                {
                    test: new RegExp(entryPath),
                    use: [
                        // Require all Android app components
                        platform === "android" && {
                            loader: "nativescript-dev-webpack/android-app-components-loader",
                            options: { modules: appComponents }
                        },

                        {
                            loader: "nativescript-dev-webpack/bundle-config-loader",
                            options: {
                                angular: true,
                                loadCss: !snapshot, // load the application css if in debug mode
                            }
                        },
                    ].filter(loader => !!loader)
                },

                { test: /\.html$|\.xml$/, use: "raw-loader" },

                // tns-core-modules reads the app.css and its imports using css-loader
                {
                    test: /[\/|\\]app\.css$/,
                    use: {
                        loader: "css-loader",
                        options: { minimize: false, url: false },
                    }
                },
                {
                    test: /[\/|\\]app\.scss$/,
                    use: [
                        { loader: "css-loader", options: { minimize: false, url: false } },
                        "sass-loader"
                    ]
                },

                // Angular components reference css files and their imports using raw-loader
                { test: /\.css$/, exclude: /[\/|\\]app\.css$/, use: "raw-loader" },
                { test: /\.scss$/, exclude: /[\/|\\]app\.scss$/, use: ["raw-loader", "resolve-url-loader", "sass-loader"] },

                {
                    test: /(?:\.ngfactory\.js|\.ngstyle\.js|\.ts)$/,
                    use: [
                        "nativescript-dev-webpack/moduleid-compat-loader",
                        "@ngtools/webpack",
                    ]
                },

                // Mark files inside `@angular/core` as using SystemJS style dynamic imports.
                // Removing this will cause deprecation warnings to appear.
                {
                    test: /[\/\\]@angular[\/\\]core[\/\\].+\.js$/,
                    parser: { system: true },
                },
            ],
        },
        plugins: [
            // Define useful constants like TNS_WEBPACK
            new webpack.DefinePlugin({
                "global.TNS_WEBPACK": "true",
                "process": undefined,
            }),
            // Remove all files from the out dir.
            new CleanWebpackPlugin([`${dist}/**/*`]),
            // Copy native app resources to out dir.
            new CopyWebpackPlugin([
                {
                    from: `${appResourcesFullPath}/${appResourcesPlatformDir}`,
                    to: `${dist}/App_Resources/${appResourcesPlatformDir}`,
                    context: projectRoot
                },
            ]),
            // Copy assets to out dir. Add your own globs as needed.
            new CopyWebpackPlugin([
                { from: "fonts/**" },
                { from: "**/*.jpg" },
                { from: "**/*.png" },
            ], { ignore: [`${relative(appPath, appResourcesFullPath)}/**`] }),
            // Generate a bundle starter script and activate it in package.json
            new nsWebpack.GenerateBundleStarterPlugin([
                "./vendor",
                "./bundle",
            ]),
            // For instructions on how to set up workers with webpack
            // check out https://github.com/nativescript/worker-loader
            new NativeScriptWorkerPlugin(),
            ngCompilerPlugin,
            // Does IPC communication with the {N} CLI to notify events when running in watch mode.
            new nsWebpack.WatchStateLoggerPlugin(),
        ],
    };

    if (report) {
        // Generate report files for bundles content
        config.plugins.push(new BundleAnalyzerPlugin({
            analyzerMode: "static",
            openAnalyzer: false,
            generateStatsFile: true,
            reportFilename: resolve(projectRoot, "report", `report.html`),
            statsFilename: resolve(projectRoot, "report", `stats.json`),
        }));
    }

    if (snapshot) {
        config.plugins.push(new nsWebpack.NativeScriptSnapshotPlugin({
            chunk: "vendor",
            angular: true,
            requireModules: [
                "reflect-metadata",
                "@angular/platform-browser",
                "@angular/core",
                "@angular/common",
                "@angular/router",
                "nativescript-angular/platform-static",
                "nativescript-angular/router",
            ],
            projectRoot,
            webpackConfig: config,
        }));
    }

    return config;
};

Describe the bug We have added following style and related image for a page background in dark.css present at the level of app.css

.page-theme { background-image: url("~/app/images/background.png"); height: 100%; background-position: center; background-repeat: no-repeat; background-size: cover; }

We are loading this file by calling following function this.page.addCssFile("./dark.css");

To Reproduce

Expected behavior

This code works fine when we build project without bundling. When i bundle and debug, i don't see the new custom css as well as the image folder that we have added in project. Here is our project hierarchy

|- src |-----app |---------app.css |---------dark.css |---------images |--------------background.png |---------modules |------------login |----------------login.component.ts |----------------login.component.css |----------------login.component.html

[NickIliev]

@phatakrajan add the custom assets folder to your webpack.config.js as follows:

new CopyWebpackPlugin([
                { from: "images/**" }, // HERE
                { from: "fonts/**" },
                { from: "**/*.jpg" },
                { from: "**/*.png" },
            ]

Then remove the platforms folder and rebuild.

[phatakrajan]

@NickIliev Do I need to add any entries for dark.css? Sorry my knowledge on webpack is very limited and my problem is still unresolved

[NickIliev]

@phatakrajan try using the import instead of addCssFile

For example

/* Import shared style rules */
@import './dark.css';

Of course the path may differ depending on where you are using the import

[allnash]

I am having a similar issue. The code works on native playground but not on the local build after I download it. SO WEIRD.

[allnash]

I have fixed this with the following change: login.component.css

FlexboxLayout {
    justify-content: center;
    align-items: center;
    background-size: cover;
    background-image: url("~/app/images/background.jpg");
}

webpack.config.js

 new CopyWebpackPlugin([
                { from: { glob: "images/**" } }, // images folder
                { from: { glob: "fonts/**"  } },
                { from: { glob: "**/*.jpg"  } },
                { from: { glob: "**/*.png"  } },

[NickIliev]

@phatakrajan were you able to resolve your issue?

[phatakrajan]

@NickIliev Yes. It is resolved