Install scripts, build app with rollup & configurable mirror app id

app/scripts/build.js

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+const fs = require('fs');
+const os = require('os');
+const path = require('path');
+
+require('@babel/register');
+
+const argv = require('minimist')(process.argv.slice(2));
+const rollup = require('rollup');
+
+const config = require('../rollup/rollup.config').default;
+
+const MANIFEST_NAME = 'fx_cast_bridge.json';
+
+async function build() {
+    const {path: executablePath, platform, ...configOptions} = argv;
+
+    const {output: bundleOutputs, ...bundleOptions} = config(configOptions);
+    const bundle = await rollup.rollup(bundleOptions);
+
+    for (const output of bundleOutputs) {
+        await bundle.write(output);
+        fs.chmodSync(output.file, '755');
+    }
+
+    const targetPlatform = platform || os.type();
+    const launcherExt = targetPlatform.toLowerCase().startsWith('win')
+            ? 'bat'
+            : 'sh';
+    const launcherName = `launcher.${launcherExt}`;
+    const launcherPath = path.join(__dirname, '../../dist', launcherName);
+
+    fs.copyFileSync(path.join(`src`, launcherName), launcherPath);
+
+    const manifest = {
+        ...(JSON.parse(fs.readFileSync(`src/${MANIFEST_NAME}`, 'utf8')))
+      , path: (executablePath || path.resolve(launcherPath))
+    };
+
+    fs.writeFileSync(
+        path.join('../dist/app', MANIFEST_NAME)
+      , JSON.stringify(manifest, null, 4)
+    );
+}
+
+build().catch(e => {
+    console.log("Build failed", e);
+    process.exit(1);
+});

app/scripts/install-manifest.js

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+const fs = require('fs');
+const os = require('os');
+const path = require('path');
+
+const argv = require('minimist')(process.argv.slice(2));
+const mkdirpSync = require('mkdirp').sync;
+
+const MANIFEST_NAME = 'fx_cast_bridge.json';
+const MANIFEST_PATH = path.resolve(__dirname, '../../dist/app', MANIFEST_NAME);
+
+const WIN_REGISTRY_KEY = 'fx_cast_bridge';
+
+let destination = argv.destination;
+
+switch (os.type()) {
+    case 'Darwin': {
+        if (!destination) {
+            const root = argv.root || process.env.HOME;
+            destination = path.resolve(
+                path.join(
+                    root
+                  , 'Library/Application Support/Mozilla/NativeMessagingHosts'
+                )
+            );
+        }
+
+        break;
+    }
+
+    case 'Linux': {
+        if (!destination) {
+            const root = argv.root || `${process.env.HOME}/.`;
+            destination = root.endsWith('/.')
+                ? `${root}mozilla/native-messaging-hosts/`
+                : path.join(root, 'mozilla/native-messaging-hosts/');
+        }
+
+        break;
+    }
+
+    case 'Windows_NT': {
+        const regedit = require('regedit');
+        const destinationManifestPath = path.join(destination, MANIFEST_NAME)
+            || MANIFEST_PATH;
+
+        regedit.putValue({
+            'HKEY_CURRENT_USER\\SOFTWARE\\Mozilla\\NativeMessagingHosts': {
+                [WIN_REGISTRY_KEY]: {
+                    value: destinationManifestPath
+                  , type: 'REG_DEFAULT'
+                }
+            }
+        });
+
+        break;
+    }
+
+    default:
+        console.error('Sorry, this installer does not yet support your OS');
+        process.exit(1);
+}
+
+if (destination) {
+    mkdirpSync(destination);
+    fs.copyFileSync(
+        MANIFEST_PATH
+      , path.join(destination, MANIFEST_NAME)
+    );
+}

app/scripts/start-debug.js

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+require('@babel/register')({
+    presets: [
+        [
+            "@babel/preset-env"
+          , {
+                targets: {
+                    node: "current"
+                }
+            }
+        ]
+    ]
+  , plugins: [
+        "@babel/plugin-transform-runtime"
+      , "@babel/plugin-syntax-dynamic-import"
+      , "@babel/plugin-syntax-import-meta"
+      , "@babel/plugin-proposal-class-properties"
+      , "@babel/plugin-proposal-json-strings"
+    ]
+});
+
+require('../src/js/main');