ng-packagr
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Compile and package Angular libraries in Angular Package Format (APF)
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{ parse as parseJson } from 'jsonc-parser';\nimport * as path from 'path';\nimport { exists, readFile, stat } from '../utils/fs';\nimport { globFiles } from '../utils/glob';\nimport * as log from '../utils/log';\nimport { ensureUnixPath } from '../utils/path';\nimport { NgEntryPoint } from './entry-point/entry-point';\nimport { NgPackage } from './package';\nimport { validateNgPackageEntryPointSchema, validateNgPackageSchema } from './schema';\n\ninterface UserPackage {\n /** Values from the `package.json` file of this user package. */\n packageJson: Record<string, any>;\n /** NgPackageConfig for this user package. */\n ngPackageJson: Record<string, any>;\n /** Absolute directory path of this user package. */\n basePath: string;\n}\n\nasync function readConfigFile(filePath: string): Promise<any> {\n if (!(await exists(filePath))) {\n return undefined;\n }\n\n if (filePath.endsWith('.js')) {\n return import(filePath);\n }\n\n const data = await readFile(filePath, 'utf-8');\n\n return parseJson(data, undefined, { allowTrailingComma: true });\n}\n\n/**\n * Resolves a user's package by testing 'ng-package.json', or 'ng-package.js'.\n *\n * @param folderPathOrFilePath A path pointing either to a file or a directory\n * @param isSecondary A boolean determining if this is a secondary package\n * @return The user's package\n */\nasync function resolveUserPackage(folderPathOrFilePath: string, isSecondary = false): Promise<UserPackage | undefined> {\n const fullPath = path.resolve(folderPathOrFilePath);\n const pathStats = await stat(fullPath);\n const basePath = pathStats.isDirectory() ? fullPath : path.dirname(fullPath);\n\n let ngPackageJson: unknown;\n if (pathStats.isDirectory()) {\n ngPackageJson = await readConfigFile(path.join(basePath, 'ng-package.json'));\n if (!ngPackageJson) {\n ngPackageJson = await readConfigFile(path.join(basePath, 'ng-package.js'));\n }\n } else {\n ngPackageJson = await readConfigFile(fullPath);\n }\n\n if (ngPackageJson) {\n ngPackageJson = ngPackageJson['default'] ?? ngPackageJson;\n try {\n if (isSecondary) {\n validateNgPackageEntryPointSchema(ngPackageJson);\n } else {\n validateNgPackageSchema(ngPackageJson);\n }\n } catch (e) {\n log.error(`An error has occurred while validating config at ${folderPathOrFilePath}`);\n throw e;\n }\n\n let packageJson: {} = {};\n if (!isSecondary) {\n const pkgJsonPath = path.join(basePath, 'package.json');\n packageJson = await readConfigFile(pkgJsonPath);\n\n if (!packageJson) {\n throw new Error(`Cannot discover package sources at ${folderPathOrFilePath} as 'package.json' was not found.`);\n }\n\n if (packageJson && typeof packageJson !== 'object') {\n throw new Error(`Invalid 'package.json' at ${folderPathOrFilePath}.`);\n }\n }\n\n return {\n basePath,\n packageJson,\n ngPackageJson,\n };\n }\n\n if (pathStats.isDirectory()) {\n // return even if it's undefined and use defaults when it's not a file\n return undefined;\n }\n\n if (pathStats.isFile()) {\n throw new Error(`Trying to read a package from unsupported file extension. Path: ${folderPathOrFilePath}`);\n }\n\n throw new Error(`Cannot discover package sources at ${folderPathOrFilePath}`);\n}\n\n/**\n * Scans `directoryPath` and sub-folders, looking for `ng-package` files.\n * Similar to `find ${directoryPath} --name ng-package --exec dirname {}`.\n *\n * @param directoryPath Path pointing to a directory\n * @param excludeFolder A sub-folder of `directoryPath` that is excluded from search results.\n */\nasync function findSecondaryPackagesPaths(directoryPath: string, excludeFolder: string): Promise<string[]> {\n const ignore = ['**/node_modules/**', '**/.git/**', `${excludeFolder}/**`, 'ng-package.json'];\n\n const filePaths = await globFiles(`**/ng-package.json`, {\n ignore,\n onlyFiles: true,\n cwd: directoryPath,\n });\n\n return filePaths.map(subpath => path.dirname(path.join(directoryPath, subpath)));\n}\n\n/**\n * Reads a secondary entry point from it's package file.\n *\n * @param primary The primary entry point.\n * @param userPackage The user package for the secondary entry point.\n */\nfunction secondaryEntryPoint(primary: NgEntryPoint, userPackage: UserPackage): NgEntryPoint {\n const { packageJson, ngPackageJson, basePath } = userPackage;\n if (path.resolve(basePath) === path.resolve(primary.basePath)) {\n log.error(`Cannot read secondary entry point. It's already a primary entry point. Path: ${basePath}`);\n throw new Error(`Secondary entry point is already a primary.`);\n }\n\n const relativeSourcePath = path.relative(primary.basePath, basePath);\n const secondaryModuleId = ensureUnixPath(`${primary.moduleId}/${relativeSourcePath}`);\n\n return new NgEntryPoint(packageJson, ngPackageJson, basePath, {\n moduleId: secondaryModuleId,\n primaryDestinationPath: primary.destinationPath,\n destinationPath: path.join(primary.destinationPath, relativeSourcePath),\n });\n}\n\nexport async function discoverPackages({ project }: { project: string }): Promise<NgPackage> {\n project = path.isAbsolute(project) ? project : path.resolve(project);\n\n const { packageJson, ngPackageJson, basePath } = await resolveUserPackage(project);\n const primary = new NgEntryPoint(packageJson, ngPackageJson, basePath);\n log.debug(`Found primary entry point: ${primary.moduleId}`);\n\n const folderPaths = await findSecondaryPackagesPaths(basePath, primary.$get('dest'));\n const secondaries: NgEntryPoint[] = [];\n\n for (const folderPath of folderPaths) {\n const secondaryPackage = await resolveUserPackage(folderPath, true);\n if (secondaryPackage) {\n secondaries.push(secondaryEntryPoint(primary, secondaryPackage));\n }\n }\n\n if (secondaries.length > 0) {\n log.debug(`Found secondary entry points: ${secondaries.map(e => e.moduleId).join(', ')}`);\n }\n\n return new NgPackage(basePath, primary, secondaries);\n}\n"]}