function getPackagerServer(args, config) {
const transformModulePath = args.transformer
? path.resolve(args.transformer)
: config.getTransformModulePath();
const providesModuleNodeModules =
args.providesModuleNodeModules || defaultProvidesModuleNodeModules;
let LogReporter;
if (args.customLogReporterPath) {
try {
// First we let require resolve it, so we can require packages in node_modules
// as expected. eg: require('my-package/reporter');
/* $FlowFixMe: can't type dynamic require */
LogReporter = require(args.customLogReporterPath);
} catch (e) {
// If that doesn't work, then we next try relative to the cwd, eg:
// require('./reporter');
/* $FlowFixMe: can't type dynamic require */
LogReporter = require(path.resolve(args.customLogReporterPath));
}
} else {
LogReporter = require('metro-bundler/src/lib/TerminalReporter');
}
/* $FlowFixMe: Flow is wrong, Node.js docs specify that process.stdout is an
* instance of a net.Socket (a local socket, not network). */
const terminal = new Terminal(process.stdout);
return ReactPackager.createServer({
assetExts: defaultAssetExts.concat(args.assetExts),
assetRegistryPath: ASSET_REGISTRY_PATH,
blacklistRE: config.getBlacklistRE(),
cacheVersion: '3',
enableBabelRCLookup: config.getEnableBabelRCLookup(),
extraNodeModules: config.extraNodeModules,
getPolyfills: config.getPolyfills,
getTransformOptions: config.getTransformOptions,
globalTransformCache: null,
hasteImpl: config.hasteImpl,
maxWorkers: args.maxWorkers,
platforms: defaultPlatforms.concat(args.platforms),
polyfillModuleNames: config.getPolyfillModuleNames(),
postMinifyProcess: config.postMinifyProcess,
postProcessBundleSourcemap: config.postProcessBundleSourcemap,
postProcessModules: config.postProcessModules,
projectRoots: args.projectRoots,
providesModuleNodeModules: providesModuleNodeModules,
reporter: new LogReporter(terminal),
resetCache: args.resetCache,
sourceExts: defaultSourceExts.concat(args.sourceExts),
transformModulePath: transformModulePath,
transformCache: TransformCaching.useTempDir(),
verbose: args.verbose,
watch: !args.nonPersistent,
workerPath: config.getWorkerPath(),
});
}
function buildBundle(
args: OutputOptions & {
assetsDest: mixed,
entryFile: string,
maxWorkers: number,
resetCache: boolean,
transformer: string,
},
config: ConfigT,
output = outputBundle,
packagerInstance,
) {
// This is used by a bazillion of npm modules we don't control so we don't
// have other choice than defining it as an env variable here.
process.env.NODE_ENV = args.dev ? 'development' : 'production';
let sourceMapUrl = args.sourcemapOutput;
if (sourceMapUrl && !args.sourcemapUseAbsolutePath) {
sourceMapUrl = path.basename(sourceMapUrl);
}
const requestOpts: RequestOptions = {
entryFile: args.entryFile,
sourceMapUrl,
dev: args.dev,
minify: !args.dev,
platform: args.platform,
};
// If a packager instance was not provided, then just create one for this
// bundle command and close it down afterwards.
var shouldClosePackager = false;
if (!packagerInstance) {
const assetExts = (config.getAssetExts && config.getAssetExts()) || [];
const sourceExts = (config.getSourceExts && config.getSourceExts()) || [];
const platforms = (config.getPlatforms && config.getPlatforms()) || [];
const transformModulePath = args.transformer
? path.resolve(args.transformer)
: config.getTransformModulePath();
const providesModuleNodeModules =
typeof config.getProvidesModuleNodeModules === 'function'
? config.getProvidesModuleNodeModules()
: defaultProvidesModuleNodeModules;
/* $FlowFixMe(>=0.54.0 site=react_native_fb,react_native_oss) This comment
* suppresses an error found when Flow v0.54 was deployed. To see the error
* delete this comment and run Flow. */
const terminal = new Terminal(process.stdout);
const options = {
assetExts: defaultAssetExts.concat(assetExts),
assetRegistryPath: ASSET_REGISTRY_PATH,
blacklistRE: config.getBlacklistRE(),
extraNodeModules: config.extraNodeModules,
getPolyfills: config.getPolyfills,
getTransformOptions: config.getTransformOptions,
globalTransformCache: null,
hasteImpl: config.hasteImpl,
maxWorkers: args.maxWorkers,
platforms: defaultPlatforms.concat(platforms),
postMinifyProcess: config.postMinifyProcess,
postProcessModules: config.postProcessModules,
postProcessBundleSourcemap: config.postProcessBundleSourcemap,
projectRoots: config.getProjectRoots(),
providesModuleNodeModules: providesModuleNodeModules,
resetCache: args.resetCache,
reporter: new TerminalReporter(terminal),
sourceExts: defaultSourceExts.concat(sourceExts),
transformCache: TransformCaching.useTempDir(),
transformModulePath: transformModulePath,
useDeltaBundler: false,
watch: false,
workerPath: config.getWorkerPath && config.getWorkerPath(),
};
packagerInstance = new Server(options);
shouldClosePackager = true;
}
const bundlePromise = output.build(packagerInstance, requestOpts)
.then(bundle => {
if (shouldClosePackager) {
packagerInstance.end();
}
return saveBundle(output, bundle, args);
});
// Save the assets of the bundle
const assets = bundlePromise
.then(bundle => bundle.getAssets())
.then(outputAssets => saveAssets(
outputAssets,
args.platform,
args.assetsDest,
));
// When we're done saving bundle output and the assets, we're done.
return assets;
}