ng-packagr/lib/ng-package/package.transform.js.map

Compile and package Angular libraries in Angular Package Format (APF)

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{ DepGraph } from 'dependency-graph';\nimport {\n  NEVER,\n  Observable,\n  catchError,\n  concatMap,\n  debounceTime,\n  defaultIfEmpty,\n  filter,\n  finalize,\n  from,\n  map,\n  of as observableOf,\n  pipe,\n  startWith,\n  switchMap,\n  takeLast,\n  tap,\n} from 'rxjs';\nimport { createFileWatch } from '../file-system/file-watcher';\nimport { BuildGraph } from '../graph/build-graph';\nimport { STATE_DIRTY, STATE_DONE, STATE_IN_PROGRESS } from '../graph/node';\nimport { Transform } from '../graph/transform';\nimport { colors } from '../utils/color';\nimport { rmdir } from '../utils/fs';\nimport * as log from '../utils/log';\nimport { ensureUnixPath } from '../utils/path';\nimport { discoverPackages } from './discover-packages';\nimport {\n  EntryPointNode,\n  PackageNode,\n  byEntryPoint,\n  fileUrl,\n  fileUrlPath,\n  isEntryPoint,\n  isPackage,\n  ngUrl,\n} from './nodes';\nimport { NgPackagrOptions } from './options.di';\n\n/**\n * A transformation for building an npm package:\n *\n *  - discoverPackages\n *  - options\n *  - initTsConfig\n *  - analyzeTsSources (thereby extracting template and stylesheet files)\n *  - for each entry point\n *    - run the entryPontTransform\n *\n * @param project Project token, reference to `ng-package.json`\n * @param options ng-packagr options\n * @param initTsConfigTransform Transformation initializing the tsconfig of each entry point.\n * @param analyseSourcesTransform Transformation analyzing the typescript source files of each entry point.\n * @param entryPointTransform Transformation for asset rendering and compilation of a single entry point.\n */\nexport const packageTransformFactory =\n  (\n    project: string,\n    options: NgPackagrOptions,\n    initTsConfigTransform: Transform,\n    analyseSourcesTransform: Transform,\n    entryPointTransform: Transform,\n  ) =>\n  (source$: Observable<BuildGraph>): Observable<BuildGraph> => {\n    log.info(`Building Angular Package`);\n\n    const buildTransform = options.watch\n      ? watchTransformFactory(project, options, analyseSourcesTransform, entryPointTransform)\n      : buildTransformFactory(project, analyseSourcesTransform, entryPointTransform);\n\n    const pkgUri = ngUrl(project);\n    const ngPkg = new PackageNode(pkgUri);\n\n    return source$.pipe(\n      // Discover packages and entry points\n      // Clean the primary dest folder (should clean all secondary sub-directory, as well)\n      switchMap(async graph => {\n        ngPkg.data = await discoverPackages({ project });\n\n        graph.put(ngPkg);\n        const { dest, deleteDestPath } = ngPkg.data;\n\n        if (deleteDestPath) {\n          try {\n            await rmdir(dest, { recursive: true });\n          } catch {}\n        }\n\n        const entryPoints = [ngPkg.data.primary, ...ngPkg.data.secondaries].map(entryPoint => {\n          const { destinationFiles, moduleId } = entryPoint;\n          const node = new EntryPointNode(\n            ngUrl(moduleId),\n            ngPkg.cache.sourcesFileCache,\n            ngPkg.cache.moduleResolutionCache,\n          );\n          node.data = { entryPoint, destinationFiles };\n          node.state = 'dirty';\n          ngPkg.dependsOn(node);\n\n          return node;\n        });\n\n        // Add entry points to graph\n        return graph.put(entryPoints);\n      }),\n      // Initialize the tsconfig for each entry point\n      initTsConfigTransform,\n      // perform build\n      buildTransform,\n      finalize(() => {\n        for (const node of ngPkg.dependents) {\n          if (node instanceof EntryPointNode) {\n            node.cache.stylesheetProcessor?.destroy();\n          }\n        }\n      }),\n    );\n  };\n\nconst watchTransformFactory =\n  (project: string, options: NgPackagrOptions, analyseSourcesTransform: Transform, entryPointTransform: Transform) =>\n  (source$: Observable<BuildGraph>): Observable<BuildGraph> => {\n    const CompleteWaitingForFileChange = '\\nCompilation complete. Watching for file changes...';\n    const FileChangeDetected = '\\nFile change detected. Starting incremental compilation...';\n    const FailedWaitingForFileChange = '\\nCompilation failed. Watching for file changes...';\n\n    return source$.pipe(\n      switchMap(graph => {\n        const { data, cache } = graph.find(isPackage);\n        const { onFileChange, watcher } = createFileWatch([], [data.dest], options.poll);\n        graph.watcher = watcher;\n\n        return onFileChange.pipe(\n          tap(fileChange => {\n            const { filePath } = fileChange;\n            const { sourcesFileCache } = cache;\n            const cachedSourceFile = sourcesFileCache.get(filePath);\n            const { declarationFileName } = cachedSourceFile || {};\n            const uriToClean = [filePath, declarationFileName].map(x => fileUrl(ensureUnixPath(x)));\n            const nodesToClean = graph.filter(node => uriToClean.some(uri => uri === node.url));\n\n            if (!cachedSourceFile) {\n              if (!nodesToClean) {\n                return;\n              }\n            }\n\n            const allNodesToClean = [\n              ...nodesToClean,\n              // if a non ts file changes we need to clean up its direct dependees\n              // this is mainly done for resources such as html and css\n              ...nodesToClean.filter(node => !node.url.endsWith('.ts')).flatMap(node => [...node.dependees]),\n            ];\n\n            // delete node that changes\n            for (const { url } of allNodesToClean) {\n              sourcesFileCache.delete(fileUrlPath(url));\n            }\n\n            for (const entryPoint of graph.filter(isEntryPoint)) {\n              const isDirty = [...allNodesToClean].some(dependent => entryPoint.dependents.has(dependent));\n              if (isDirty) {\n                entryPoint.state = STATE_DIRTY;\n\n                uriToClean.forEach(url => {\n                  entryPoint.cache.analysesSourcesFileCache.delete(fileUrlPath(url));\n                });\n              }\n            }\n          }),\n          debounceTime(200),\n          tap(() => log.msg(FileChangeDetected)),\n          startWith(undefined),\n          map(() => graph),\n        );\n      }),\n      switchMap(graph => {\n        return observableOf(graph).pipe(\n          buildTransformFactory(project, analyseSourcesTransform, entryPointTransform),\n          tap(() => log.msg(CompleteWaitingForFileChange)),\n          catchError(error => {\n            log.error(error);\n            log.msg(FailedWaitingForFileChange);\n\n            return NEVER;\n          }),\n        );\n      }),\n    );\n  };\n\nconst buildTransformFactory =\n  (project: string, analyseSourcesTransform: Transform, entryPointTransform: Transform) =>\n  (source$: Observable<BuildGraph>): Observable<BuildGraph> => {\n    const startTime = Date.now();\n\n    const pkgUri = ngUrl(project);\n\n    return source$.pipe(\n      // Analyse dependencies and external resources for each entry point\n      analyseSourcesTransform,\n      // Next, run through the entry point transformation (assets rendering, code compilation)\n      scheduleEntryPoints(entryPointTransform),\n      tap(graph => {\n        const ngPkg = graph.get(pkgUri);\n        log.success('\\n------------------------------------------------------------------------------');\n        log.success(`Built Angular Package\n - from: ${ngPkg.data.src}\n - to:   ${ngPkg.data.dest}`);\n        log.success('------------------------------------------------------------------------------');\n        const b = colors.bold;\n        const w = colors.white;\n        log.msg(w(`\\nBuild at: ${b(new Date().toISOString())} - Time: ${b('' + (Date.now() - startTime))}ms\\n`));\n      }),\n    );\n  };\n\nconst scheduleEntryPoints = (epTransform: Transform): Transform =>\n  pipe(\n    concatMap(graph => {\n      // Calculate node/dependency depth and determine build order\n      const depGraph = new DepGraph({ circular: false });\n      const entryPoints: EntryPointNode[] = graph.filter(isEntryPoint);\n\n      for (const entryPoint of entryPoints) {\n        // Remove `ng://` prefix for better error messages\n        const from = entryPoint.url.substring(5);\n        depGraph.addNode(from);\n\n        for (const { url } of entryPoint.filter(isEntryPoint)) {\n          const to = url.substring(5);\n          depGraph.addNode(to);\n          depGraph.addDependency(from, to);\n        }\n      }\n\n      // The array index is the depth.\n      const groups = depGraph.overallOrder().map(ngUrl);\n\n      // Build entry points with lower depth values first.\n      return from(groups).pipe(\n        map((epUrl: string): EntryPointNode => graph.find(byEntryPoint().and(ep => ep.url === epUrl))),\n        filter((entryPoint: EntryPointNode): boolean => entryPoint.state !== STATE_DONE),\n        concatMap(ep =>\n          observableOf(ep).pipe(\n            // Mark the entry point as 'in-progress'\n            tap(entryPoint => (entryPoint.state = STATE_IN_PROGRESS)),\n            map(() => graph),\n            epTransform,\n          ),\n        ),\n        takeLast(1), // don't use last as sometimes it this will cause 'no elements in sequence',\n        defaultIfEmpty(graph),\n      );\n    }),\n  );\n"]}