fix: prevent component duplication

HISTORY.md

@@ -6,9 +6,13 @@ All notable changes to this project will be documented in this file.
 
 <!-- unreleased changes go here -->
 
+* Fixed
+  * Prevent Component duplications ([#1418] via [#1456])
 * Docs
   * Correct default value of option `specVersion` (via [#1460])
 
+[#1418]: https://github.com/CycloneDX/cyclonedx-webpack-plugin/issues/1418
+[#1456]: https://github.com/CycloneDX/cyclonedx-webpack-plugin/pull/1456
 [#1460]: https://github.com/CycloneDX/cyclonedx-webpack-plugin/pull/1460
 
 ## 5.2.1 - 2025-11-05

src/_helpers.ts

@@ -40,15 +40,15 @@ export interface ValidPackageJSON {
   version: string
 }
 
-export interface PackageDescription {
+export interface PackageDescription<PJ = any> {
   path: string
-  packageJson: NonNullable<any>
+  packageJson: NonNullable<PJ>
 }
 
 
 const PACKAGE_MANIFEST_FILENAME = 'package.json'
 
-export function getPackageDescription(path: string): PackageDescription | undefined {
+export function getPackageDescription(path: string): PackageDescription<ValidPackageJSON> | undefined {
   const isSubDirOfNodeModules = isSubDirectoryOfNodeModulesFolder(path)
 
   while (isAbsolute(path)) {
@@ -138,3 +138,4 @@ export function normalizePackageManifest (data: any, warn?: normalizePackageData
     data.version = oVersion.trim()
   }
 }
+

src/extractor.ts

@@ -50,8 +50,8 @@ export class Extractor {
     this.#leGatherer = leFetcher
   }
 
-  generateComponents (modules: Iterable<Module>, collectEvidence: boolean, logger?: WebpackLogger): Iterable<CDX.Models.Component> {
-    const pkgs: Record<string, CDX.Models.Component | undefined> = {}
+  generateComponents (modules: Iterable<Module>, collectEvidence: boolean, logger?: WebpackLogger): Map<string, CDX.Models.Component> {
+    const pkgs = new Map<string, CDX.Models.Component>()
     const components = new Map<Module, CDX.Models.Component>()
 
     logger?.log('start building Components from modules...')
@@ -65,7 +65,7 @@ export class Extractor {
         logger?.debug('skipped package for', module.context)
         continue
       }
-      let component = pkgs[pkg.path]
+      let component = pkgs.get(pkg.path)
       if (component === undefined) {
         logger?.log('try to build new Component from PkgPath:', pkg.path)
         try {
@@ -76,7 +76,7 @@ export class Extractor {
           continue
         }
         logger?.debug('built', component, 'based on', pkg, 'for module', module)
-        pkgs[pkg.path] = component
+        pkgs.set(pkg.path, component)
       }
       components.set(module, component)
     }
@@ -85,7 +85,7 @@ export class Extractor {
     this.#linkDependencies(components)
 
     logger?.log('done building Components from modules...')
-    return components.values()
+    return pkgs
   }
 
   /**

src/plugin.ts

@@ -206,7 +206,6 @@ export class CycloneDxWebpackPlugin {
 
     const bom = new CDX.Models.Bom()
     bom.metadata.lifecycles.add(CDX.Enums.LifecyclePhase.Build)
-    bom.metadata.component = this.#makeRootComponent(compilation.compiler.context, cdxComponentBuilder, logger.getChildLogger('RootComponentBuilder'))
 
     const serializeOptions: CDX.Serialize.Types.SerializerOptions & CDX.Serialize.Types.NormalizerOptions = {
       sortLists: this.reproducibleResults,
@@ -247,6 +246,9 @@ export class CycloneDxWebpackPlugin {
       }
     }
 
+    const rcPath = getPackageDescription(compilation.compiler.context)?.path
+      ?? compilation.compiler.context
+
     compilation.hooks.afterOptimizeTree.tap(
       pluginName,
       (_, modules) => {
@@ -259,23 +261,38 @@ export class CycloneDxWebpackPlugin {
         )
 
         thisLogger.log('generating components...')
-        for (const component of extractor.generateComponents(modules, this.collectEvidence, thisLogger.getChildLogger('Extractor'))) {
-          if (bom.metadata.component !== undefined &&
-            bom.metadata.component.group === component.group &&
-            bom.metadata.component.name === component.name &&
-            bom.metadata.component.version === component.version
-          ) {
-            // metadata matches this exact component.
-            // -> so the component is actually treated as the root component.
-            thisLogger.debug('update bom.metadata.component - replace', bom.metadata.component, 'with', component)
-            bom.metadata.component = component
+        const components = extractor.generateComponents(modules, this.collectEvidence, thisLogger.getChildLogger('Extractor'))
+        const rcComponentDetected = components.get(rcPath)
+        if ( undefined !== rcComponentDetected ) {
+          if (this.rootComponentAutodetect) {
+            thisLogger.debug('set bom.metadata.component', rcComponentDetected)
+            bom.metadata.component = rcComponentDetected
+            components.delete(rcPath)
           } else {
+            const rcComponent = cdxComponentBuilder.makeComponent({
+              name: this.rootComponentName,
+              version: this.rootComponentVersion,
+            })
+            if (rcComponent !== undefined) {
+              rcComponent.dependencies = rcComponentDetected.dependencies
+              for (const {dependencies} of components.values()) {
+                if (dependencies.delete(rcComponentDetected.bomRef)) {
+                  dependencies.add(rcComponent.bomRef)
+                }
+              }
+              thisLogger.debug('add to bom.metadata.component', rcComponentDetected)
+              bom.metadata.component = rcComponent
+              components.delete(rcPath)
+            }
+          }
+        }
+        for (const component of components.values()) {
             thisLogger.debug('add to bom.components', component)
             bom.components.add(component)
-          }
         }
         thisLogger.log('generated components.')
 
+
         thisLogger.log('finalizing BOM...')
         this.#finalizeBom(bom, cdxComponentBuilder, cdxPurlFactory, logger.getChildLogger('BomFinalizer'))
         thisLogger.log('finalized BOM.')
@@ -368,25 +385,6 @@ export class CycloneDxWebpackPlugin {
     }
   }
 
-  #makeRootComponent (
-    path: string,
-    builder: CDX.Builders.FromNodePackageJson.ComponentBuilder,
-    logger: WebpackLogger
-  ): CDX.Models.Component | undefined {
-    /* eslint-disable-next-line @typescript-eslint/no-unsafe-assignment -- expected */
-    const thisPackageJson = this.rootComponentAutodetect
-      ? getPackageDescription(path)?.packageJson
-      : { name: this.rootComponentName, version: this.rootComponentVersion }
-    if (thisPackageJson === undefined) { return undefined }
-    normalizePackageManifest(
-
-      thisPackageJson,
-      w => { logger.debug('normalizePackageJson from PkgPath', path, 'caused:', w) }
-    )
-
-    return builder.makeComponent(thisPackageJson)
-  }
-
   #finalizeBom (
     bom: CDX.Models.Bom,
     cdxComponentBuilder: CDX.Builders.FromNodePackageJson.ComponentBuilder,
@@ -410,12 +408,13 @@ export class CycloneDxWebpackPlugin {
       bom.metadata.tools.components.add(toolC)
     }
 
-    if (bom.metadata.component !== undefined) {
-      this.#addRootComponentExtRefs(bom.metadata.component, logger)
+    const rComponent = bom.metadata.component
+    if (rComponent !== undefined) {
+      this.#addRootComponentExtRefs(rComponent, logger)
       /* eslint-disable-next-line  @typescript-eslint/no-unsafe-type-assertion -- ack */
-      bom.metadata.component.type = this.rootComponentType as CDX.Models.Component['type']
-      bom.metadata.component.purl = cdxPurlFactory.makeFromComponent(bom.metadata.component)
-      bom.metadata.component.bomRef.value = bom.metadata.component.purl?.toString()
+      rComponent.type = this.rootComponentType as CDX.Models.Component['type']
+      rComponent.purl = cdxPurlFactory.makeFromComponent(rComponent)
+      rComponent.bomRef.value = rComponent.purl?.toString()
     }
     /* eslint-enable no-param-reassign */
   }