Method checkAndAddResource

lib/lbt/bundle/Resolver.js:111–207

(resourceName, depth, msg)

			}

			function checkAndAddResource(resourceName, depth, msg) {
				// console.log("    checking " + resourceName + " at depth " + depth);
				let maybeAccepted = true;
				let done;

				if ( !(resourceName in visitedResources) && (maybeAccepted = isAccepted(resourceName, depth > 0)) ) {
					// console.log("    accepted: " + resourceName );
					if ( dependencyTracker != null ) {
						dependencyTracker.visitDependency(resourceName);
					}

					// remember that we have seen this module already
					visitedResources[resourceName] = resourceName;

					done = pool.findResourceWithInfo(resourceName)
						.catch( (err) => {
							// if the caller provided an error message, log it
							if ( msg && !ignoreMissingModules ) {
								missingModules[resourceName] ??= [];
								missingModules[resourceName].push(msg);
							}
							// return undefined
						})
						.then( (resource) => checkForDecomposableBundle(resource) )
						.then( ({resource, isBundle, decomposable}) => {
							const dependencyInfo = resource && resource.info;
							let promises = [];

							// Skip ESM modules — they can't be bundled
							if (resource?.info?.format === ModuleInfo.Format.ESM) {
								log.error(
									`Module ${resourceName} is an ECMAScript Module (ESM), ` +
									`which is not supported for bundling. ` +
									`The module will be skipped.`
								);
								return;
							}

							if ( isBundle && !decomposable ) {
								resource.info.subModules.forEach(
									(included) => {
										includedModules.add(included);
									}
								);
							}

							if ( decomposable ) {
								// bundles are not added, only their embedded modules
								promises = dependencyInfo.subModules.map( (included) => {
									return checkAndAddResource(included, depth + 1,
										`**** error: missing submodule ${included}, included by ${resourceName}`);
								});
							} else if ( resource != null ) {
								// trace.trace("    checking dependencies of " + resource.name );
								selectedResources[resourceName] = resourceName;
								selectedResourcesSequence.push(resourceName);

								// trace.info("    collecting %s", resource.name);