node-module-engine-host.js 13 KB

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  1. "use strict";
  2. /**
  3. * @license
  4. * Copyright Google LLC All Rights Reserved.
  5. *
  6. * Use of this source code is governed by an MIT-style license that can be
  7. * found in the LICENSE file at https://angular.io/license
  8. */
  9. Object.defineProperty(exports, "__esModule", { value: true });
  10. exports.NodeModulesEngineHost = exports.NodePackageDoesNotSupportSchematics = void 0;
  11. const core_1 = require("@angular-devkit/core");
  12. const path_1 = require("path");
  13. const export_ref_1 = require("./export-ref");
  14. const file_system_engine_host_base_1 = require("./file-system-engine-host-base");
  15. const file_system_utility_1 = require("./file-system-utility");
  16. class NodePackageDoesNotSupportSchematics extends core_1.BaseException {
  17. constructor(name) {
  18. super(`Package ${JSON.stringify(name)} was found but does not support schematics.`);
  19. }
  20. }
  21. exports.NodePackageDoesNotSupportSchematics = NodePackageDoesNotSupportSchematics;
  22. /**
  23. * A simple EngineHost that uses NodeModules to resolve collections.
  24. */
  25. class NodeModulesEngineHost extends file_system_engine_host_base_1.FileSystemEngineHostBase {
  26. constructor(paths) {
  27. super();
  28. this.paths = paths;
  29. }
  30. resolve(name, requester, references = new Set()) {
  31. if (requester) {
  32. if (references.has(requester)) {
  33. references.add(requester);
  34. throw new Error('Circular schematic reference detected: ' + JSON.stringify(Array.from(references)));
  35. }
  36. else {
  37. references.add(requester);
  38. }
  39. }
  40. const relativeBase = requester ? (0, path_1.dirname)(requester) : process.cwd();
  41. let collectionPath = undefined;
  42. if (name.startsWith('.')) {
  43. name = (0, path_1.resolve)(relativeBase, name);
  44. }
  45. const resolveOptions = {
  46. paths: requester ? [(0, path_1.dirname)(requester), ...(this.paths || [])] : this.paths,
  47. };
  48. // Try to resolve as a package
  49. try {
  50. const packageJsonPath = require.resolve((0, path_1.join)(name, 'package.json'), resolveOptions);
  51. const { schematics } = require(packageJsonPath);
  52. if (!schematics || typeof schematics !== 'string') {
  53. throw new NodePackageDoesNotSupportSchematics(name);
  54. }
  55. collectionPath = this.resolve(schematics, packageJsonPath, references);
  56. }
  57. catch (e) {
  58. if (e.code !== 'MODULE_NOT_FOUND') {
  59. throw e;
  60. }
  61. }
  62. // If not a package, try to resolve as a file
  63. if (!collectionPath) {
  64. try {
  65. collectionPath = require.resolve(name, resolveOptions);
  66. }
  67. catch (e) {
  68. if (e.code !== 'MODULE_NOT_FOUND') {
  69. throw e;
  70. }
  71. }
  72. }
  73. // If not a package or a file, error
  74. if (!collectionPath) {
  75. throw new file_system_engine_host_base_1.CollectionCannotBeResolvedException(name);
  76. }
  77. return collectionPath;
  78. }
  79. _resolveCollectionPath(name, requester) {
  80. const collectionPath = this.resolve(name, requester);
  81. (0, file_system_utility_1.readJsonFile)(collectionPath);
  82. return collectionPath;
  83. }
  84. _resolveReferenceString(refString, parentPath, collectionDescription) {
  85. const ref = new export_ref_1.ExportStringRef(refString, parentPath);
  86. if (!ref.ref) {
  87. return null;
  88. }
  89. return { ref: ref.ref, path: ref.module };
  90. }
  91. _transformCollectionDescription(name, desc) {
  92. if (!desc.schematics || typeof desc.schematics != 'object') {
  93. throw new file_system_engine_host_base_1.CollectionMissingSchematicsMapException(name);
  94. }
  95. return {
  96. ...desc,
  97. name,
  98. };
  99. }
  100. _transformSchematicDescription(name, _collection, desc) {
  101. if (!desc.factoryFn || !desc.path || !desc.description) {
  102. throw new file_system_engine_host_base_1.SchematicMissingFieldsException(name);
  103. }
  104. return desc;
  105. }
  106. }
  107. exports.NodeModulesEngineHost = NodeModulesEngineHost;
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[dirname(requester), ...(this.paths || [])] : this.paths,\n    };\n\n    // Try to resolve as a package\n    try {\n      const packageJsonPath = require.resolve(join(name, 'package.json'), resolveOptions);\n      const { schematics } = require(packageJsonPath);\n\n      if (!schematics || typeof schematics !== 'string') {\n        throw new NodePackageDoesNotSupportSchematics(name);\n      }\n\n      collectionPath = this.resolve(schematics, packageJsonPath, references);\n    } catch (e) {\n      if ((e as NodeJS.ErrnoException).code !== 'MODULE_NOT_FOUND') {\n        throw e;\n      }\n    }\n\n    // If not a package, try to resolve as a file\n    if (!collectionPath) {\n      try {\n        collectionPath = require.resolve(name, resolveOptions);\n      } catch (e) {\n        if ((e as NodeJS.ErrnoException).code !== 'MODULE_NOT_FOUND') {\n          throw e;\n        }\n      }\n    }\n\n    // If not a package or a file, error\n    if (!collectionPath) {\n      throw new CollectionCannotBeResolvedException(name);\n    }\n\n    return collectionPath;\n  }\n\n  protected _resolveCollectionPath(name: string, requester?: string): string {\n    const collectionPath = this.resolve(name, requester);\n    readJsonFile(collectionPath);\n\n    return collectionPath;\n  }\n\n  protected _resolveReferenceString(\n    refString: string,\n    parentPath: string,\n    collectionDescription?: FileSystemCollectionDesc,\n  ) {\n    const ref = new ExportStringRef<RuleFactory<{}>>(refString, parentPath);\n    if (!ref.ref) {\n      return null;\n    }\n\n    return { ref: ref.ref, path: ref.module };\n  }\n\n  protected _transformCollectionDescription(\n    name: string,\n    desc: Partial<FileSystemCollectionDesc>,\n  ): FileSystemCollectionDesc {\n    if (!desc.schematics || typeof desc.schematics != 'object') {\n      throw new CollectionMissingSchematicsMapException(name);\n    }\n\n    return {\n      ...desc,\n      name,\n    } as FileSystemCollectionDesc;\n  }\n\n  protected _transformSchematicDescription(\n    name: string,\n    _collection: FileSystemCollectionDesc,\n    desc: Partial<FileSystemSchematicDesc>,\n  ): FileSystemSchematicDesc {\n    if (!desc.factoryFn || !desc.path || !desc.description) {\n      throw new SchematicMissingFieldsException(name);\n    }\n\n    return desc as FileSystemSchematicDesc;\n  }\n}\n"]}