ng-packagr/lib/ts/cache-compiler-host.js.map

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

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type { CompilerHost, CompilerOptions } from '@angular/compiler-cli';\nimport convertSourceMap from 'convert-source-map';\nimport { createHash } from 'crypto';\nimport assert from 'node:assert';\nimport * as path from 'path';\nimport ts from 'typescript';\nimport { NgPackageConfig } from '../../ng-package.schema';\nimport { FileCache } from '../file-system/file-cache';\nimport { BuildGraph } from '../graph/build-graph';\nimport { Node } from '../graph/node';\nimport { EntryPointNode, fileUrl } from '../ng-package/nodes';\nimport { StylesheetProcessor } from '../styles/stylesheet-processor';\nimport { ensureUnixPath } from '../utils/path';\n\nexport function cacheCompilerHost(\n  graph: BuildGraph,\n  entryPoint: EntryPointNode,\n  compilerOptions: CompilerOptions,\n  moduleResolutionCache: ts.ModuleResolutionCache,\n  stylesheetProcessor?: StylesheetProcessor,\n  inlineStyleLanguage?: NgPackageConfig['inlineStyleLanguage'],\n  sourcesFileCache: FileCache = entryPoint.cache.sourcesFileCache,\n): CompilerHost {\n  const compilerHost = ts.createIncrementalCompilerHost(compilerOptions);\n\n  // Set the parsing mode to the same as TS 5.3 default for tsc. This provides a parse\n  // performance improvement by skipping non-type related JSDoc parsing.\n  // NOTE: The check for this enum can be removed when TS 5.3 support is the minimum.\n  if (ts.JSDocParsingMode) {\n    compilerHost.jsDocParsingMode = ts.JSDocParsingMode.ParseForTypeErrors;\n  }\n\n  const getNode = (fileName: string) => {\n    const nodeUri = fileUrl(ensureUnixPath(fileName));\n    let node = graph.get(nodeUri);\n\n    if (!node) {\n      node = new Node(nodeUri);\n      graph.put(node);\n    }\n\n    return node;\n  };\n\n  const addDependee = (fileName: string) => {\n    const node = getNode(fileName);\n    entryPoint.dependsOn(node);\n  };\n\n  const { flatModuleFile, destinationPath, entryFile } = entryPoint.data.entryPoint;\n  const flatModuleFileDtsFilename = `${flatModuleFile}.d.ts`;\n  const flatModuleFileDtsPath = ensureUnixPath(path.join(destinationPath, flatModuleFileDtsFilename));\n  const hasIndexEntryFile = path.basename(entryFile.toLowerCase()) === 'index.ts';\n\n  return {\n    ...compilerHost,\n\n    // ts specific\n    fileExists: (fileName: string) => {\n      const cache = sourcesFileCache.getOrCreate(fileName);\n      if (cache.exists === undefined) {\n        cache.exists = compilerHost.fileExists.call(this, fileName);\n      }\n\n      return cache.exists;\n    },\n\n    getSourceFile: (fileName: string, languageVersion: ts.ScriptTarget) => {\n      addDependee(fileName);\n      const cache = sourcesFileCache.getOrCreate(fileName);\n      if (!cache.sourceFile) {\n        cache.sourceFile = compilerHost.getSourceFile.call(this, fileName, languageVersion);\n      }\n\n      return cache.sourceFile;\n    },\n\n    writeFile: (\n      fileName: string,\n      data: string,\n      writeByteOrderMark: boolean,\n      onError?: (message: string) => void,\n      sourceFiles?: ReadonlyArray<ts.SourceFile>,\n    ) => {\n      if (fileName.includes('.ngtypecheck.')) {\n        return;\n      }\n\n      if (!sourceFiles?.length && fileName.endsWith('.tsbuildinfo')) {\n        // Save builder info contents to specified location\n        compilerHost.writeFile.call(this, fileName, data, writeByteOrderMark, onError, sourceFiles);\n\n        return;\n      }\n\n      assert(sourceFiles?.length === 1, 'Invalid TypeScript program emit for ' + fileName);\n      const outputCache = entryPoint.cache.outputCache;\n\n      if (fileName.endsWith('.d.ts')) {\n        if (fileName === flatModuleFileDtsPath) {\n          if (hasIndexEntryFile) {\n            // In case the entry file is index.ts, we should not emit the `d.ts` which are a re-export of the `index.ts`.\n            // Because it will cause a conflict.\n            return;\n          } else {\n            // Rename file to index.d.ts so that TypeScript can resolve types without\n            // them needing to be referenced in the package.json manifest.\n            fileName = fileName.replace(flatModuleFileDtsFilename, 'index.d.ts');\n          }\n        }\n\n        sourceFiles.forEach(source => {\n          const cache = sourcesFileCache.getOrCreate(source.fileName);\n          if (!cache.declarationFileName) {\n            cache.declarationFileName = ensureUnixPath(fileName);\n          }\n        });\n\n        if (outputCache.get(fileName)?.content === data) {\n          // Only emit files that changed content.\n          return;\n        }\n\n        outputCache.set(fileName, {\n          content: data,\n        });\n      } else {\n        fileName = fileName.replace(/\\.js(\\.map)?$/, '.mjs$1');\n        if (outputCache.get(fileName)?.content === data) {\n          return;\n        }\n\n        // Extract inline sourcemap which will later be used by rollup.\n        let map = undefined;\n        const version = createHash('sha256').update(data).digest('hex');\n\n        if (fileName.endsWith('.mjs')) {\n          if (outputCache.get(fileName)?.version === version) {\n            // Only emit changed files\n            return;\n          }\n\n          map = convertSourceMap.fromComment(data).toJSON();\n        }\n\n        outputCache.set(fileName, {\n          content: data,\n          version,\n          map,\n        });\n      }\n\n      compilerHost.writeFile.call(this, fileName, data, writeByteOrderMark, onError, sourceFiles);\n    },\n\n    readFile: (fileName: string) => {\n      addDependee(fileName);\n      const cache = sourcesFileCache.getOrCreate(fileName);\n      if (cache.content === undefined) {\n        cache.content = compilerHost.readFile.call(this, fileName);\n      }\n\n      return cache.content;\n    },\n\n    resolveModuleNames: (moduleNames: string[], containingFile: string) => {\n      return moduleNames.map(moduleName => {\n        const { resolvedModule } = ts.resolveModuleName(\n          moduleName,\n          ensureUnixPath(containingFile),\n          compilerOptions,\n          compilerHost,\n          moduleResolutionCache,\n        );\n\n        return resolvedModule;\n      });\n    },\n\n    resourceNameToFileName: (resourceName: string, containingFilePath: string) => {\n      const resourcePath = path.resolve(path.dirname(containingFilePath), resourceName);\n      const containingNode = getNode(containingFilePath);\n      const resourceNode = getNode(resourcePath);\n      containingNode.dependsOn(resourceNode);\n\n      return resourcePath;\n    },\n\n    readResource: async (fileName: string) => {\n      addDependee(fileName);\n\n      const cache = sourcesFileCache.getOrCreate(fileName);\n      if (cache.content === undefined) {\n        if (!compilerHost.fileExists(fileName)) {\n          throw new Error(`Cannot read file ${fileName}.`);\n        }\n\n        if (/(?:html?|svg)$/.test(path.extname(fileName))) {\n          // template\n          cache.content = compilerHost.readFile.call(this, fileName);\n        } else {\n          // stylesheet\n          cache.content = await stylesheetProcessor.process({\n            filePath: fileName,\n            content: compilerHost.readFile.call(this, fileName),\n          });\n        }\n\n        cache.exists = true;\n      }\n\n      return cache.content;\n    },\n    transformResource: async (data, context) => {\n      if (context.resourceFile || context.type !== 'style') {\n        return null;\n      }\n\n      if (inlineStyleLanguage) {\n        const key = createHash('sha1').update(data).digest('hex');\n        const fileName = `${context.containingFile}-${key}.${inlineStyleLanguage}`;\n        const cache = sourcesFileCache.getOrCreate(fileName);\n        if (cache.content === undefined) {\n          cache.content = await stylesheetProcessor.process({\n            filePath: fileName,\n            content: data,\n          });\n\n          const virtualFileNode = getNode(fileName);\n          const containingFileNode = getNode(context.containingFile);\n          virtualFileNode.dependsOn(containingFileNode);\n        }\n\n        cache.exists = true;\n\n        return { content: cache.content };\n      }\n\n      return null;\n    },\n  };\n}\n\nexport function augmentProgramWithVersioning(program: ts.Program): void {\n  const baseGetSourceFiles = program.getSourceFiles;\n  program.getSourceFiles = function (...parameters) {\n    const files: readonly (ts.SourceFile & { version?: string })[] = baseGetSourceFiles(...parameters);\n\n    for (const file of files) {\n      if (file.version === undefined) {\n        file.version = createHash('sha256').update(file.text).digest('hex');\n      }\n    }\n\n    return files;\n  };\n}\n"]}