[api-extractor] Replace the old "tsdocFlavor" field with a dist/tsdoc-metadata.json output

apps/api-documenter/src/start.ts

@@ -3,18 +3,14 @@
 
 import * as os from 'os';
 import * as colors from 'colors';
-import * as path from 'path';
 
-import { FileConstants } from '@microsoft/node-core-library';
+import { PackageJsonLookup } from '@microsoft/node-core-library';
 
 import { ApiDocumenterCommandLine } from './cli/ApiDocumenterCommandLine';
 
-const myPackageJsonFilename: string = path.resolve(path.join(
-  __dirname, '..', FileConstants.PackageJson)
-);
-const myPackageJson: { version: string } = require(myPackageJsonFilename);
+const myPackageVersion: string = PackageJsonLookup.loadOwnPackageJson(__dirname, '..').version;
 
-console.log(os.EOL + colors.bold(`api-documenter ${myPackageJson.version} `
+console.log(os.EOL + colors.bold(`api-documenter ${myPackageVersion} `
   + colors.cyan(' - http://aka.ms/extractor') + os.EOL));
 
 const parser: ApiDocumenterCommandLine = new ApiDocumenterCommandLine();

apps/api-extractor/src/ExtractorContext.ts

@@ -51,7 +51,8 @@ export interface IExtractorContextOptions {
  * abstract syntax tree.
  */
 export class ExtractorContext {
-  public typeChecker: ts.TypeChecker;
+  public readonly program: ts.Program;
+  public readonly typeChecker: ts.TypeChecker;
   public package: AstPackage;
 
   /**
@@ -73,12 +74,12 @@ export class ExtractorContext {
 
   public readonly validationRules: IExtractorValidationRulesConfig;
 
+  public readonly logger: ILogger;
+
   // If the entry point is "C:\Folder\project\src\index.ts" and the nearest package.json
   // is "C:\Folder\project\package.json", then the packageFolder is "C:\Folder\project"
   private _packageFolder: string;
 
-  private _logger: ILogger;
-
   constructor(options: IExtractorContextOptions) {
     this.packageJsonLookup = new PackageJsonLookup();
 
@@ -97,7 +98,7 @@ export class ExtractorContext {
 
     this.docItemLoader = new DocItemLoader(this._packageFolder);
 
-    this._logger = options.logger;
+    this.logger = options.logger;
 
     // This runs a full type analysis, and then augments the Abstract Syntax Tree (i.e. declarations)
     // with semantic information (i.e. symbols).  The "diagnostics" are a subset of the everyday
@@ -107,6 +108,7 @@ export class ExtractorContext {
       this.reportError(`TypeScript: ${errorText}`, diagnostic.file, diagnostic.start);
     }
 
+    this.program = options.program;
     this.typeChecker = options.program.getTypeChecker();
 
     const rootFile: ts.SourceFile | undefined = options.program.getSourceFile(options.entryPointFile);
@@ -146,10 +148,10 @@ export class ExtractorContext {
 
       // Format the error so that VS Code can follow it.  For example:
       // "src\MyClass.ts(15,1): The JSDoc tag "@blah" is not supported by AEDoc"
-      this._logger.logError(`${shownPath}(${lineAndCharacter.line + 1},${lineAndCharacter.character + 1}): `
+      this.logger.logError(`${shownPath}(${lineAndCharacter.line + 1},${lineAndCharacter.character + 1}): `
         + message);
     } else {
-      this._logger.logError(message);
+      this.logger.logError(message);
     }
   }
 

apps/api-extractor/src/extractor/Extractor.ts

@@ -10,7 +10,8 @@ import {
   JsonFile,
   JsonSchema,
   Path,
-  FileSystem
+  FileSystem,
+  PackageJsonLookup
 } from '@microsoft/node-core-library';
 import {
   IExtractorConfig,
@@ -25,6 +26,7 @@ import { ApiFileGenerator } from '../generators/ApiFileGenerator';
 import { DtsRollupGenerator, DtsRollupKind } from '../generators/dtsRollup/DtsRollupGenerator';
 import { MonitoredLogger } from './MonitoredLogger';
 import { TypeScriptMessageFormatter } from '../utils/TypeScriptMessageFormatter';
+import { PackageMetadataManager } from '../generators/dtsRollup/PackageMetadataManager';
 
 /**
  * Options for {@link Extractor.processProject}.
@@ -119,6 +121,13 @@ export class Extractor {
   private readonly _monitoredLogger: MonitoredLogger;
   private readonly _absoluteRootFolder: string;
 
+  /**
+   * The NPM package version for the currently executing instance of the "\@microsoft/api-extractor" library.
+   */
+  public static get version(): string {
+    return PackageJsonLookup.loadOwnPackageJson(__dirname, '../..').version;
+  }
+
   /**
    * Given a list of absolute file paths, return a list containing only the declaration
    * files.  Duplicates are also eliminated.
@@ -399,6 +408,9 @@ export class Extractor {
 
     this._generateRollupDtsFiles(context);
 
+    // Write the tsdoc-metadata.json file for this project
+    PackageMetadataManager.writeTsdocMetadataFile(context.packageFolder);
+
     if (this._localBuild) {
       // For a local build, fail if there were errors (but ignore warnings)
       return this._monitoredLogger.errorCount === 0;
@@ -486,7 +498,7 @@ export class Extractor {
     this._monitoredLogger.logVerbose(`Writing package typings: ${mainDtsRollupFullPath}`);
 
     dtsRollupGenerator.writeTypingsFile(mainDtsRollupFullPath, dtsKind);
-}
+  }
 
   private _getShortFilePath(absolutePath: string): string {
     if (!path.isAbsolute(absolutePath)) {

apps/api-extractor/src/generators/dtsRollup/AstSymbolTable.ts

@@ -13,6 +13,7 @@ import { AstSymbol } from './AstSymbol';
 import { AstImport } from './AstImport';
 import { AstEntryPoint, IExportedMember } from './AstEntryPoint';
 import { PackageMetadataManager } from './PackageMetadataManager';
+import { ILogger } from '../../extractor/ILogger';
 
 /**
  * AstSymbolTable is the workhorse that builds AstSymbol and AstDeclaration objects.
@@ -22,6 +23,7 @@ import { PackageMetadataManager } from './PackageMetadataManager';
  * is "exported" or not.)
  */
 export class AstSymbolTable {
+  private readonly _program: ts.Program;
   private readonly _typeChecker: ts.TypeChecker;
   private readonly _packageJsonLookup: PackageJsonLookup;
   private readonly _packageMetadataManager: PackageMetadataManager;
@@ -54,10 +56,13 @@ export class AstSymbolTable {
   private readonly _astEntryPointsBySourceFile: Map<ts.SourceFile, AstEntryPoint>
     = new Map<ts.SourceFile, AstEntryPoint>();
 
-  public constructor(typeChecker: ts.TypeChecker, packageJsonLookup: PackageJsonLookup) {
+  public constructor(program: ts.Program, typeChecker: ts.TypeChecker, packageJsonLookup: PackageJsonLookup,
+    logger: ILogger) {
+
+    this._program = program;
     this._typeChecker = typeChecker;
     this._packageJsonLookup = packageJsonLookup;
-    this._packageMetadataManager = new PackageMetadataManager(packageJsonLookup);
+    this._packageMetadataManager = new PackageMetadataManager(packageJsonLookup, logger);
   }
 
   /**
@@ -73,16 +78,18 @@ export class AstSymbolTable {
         throw new Error('Unable to find a root declaration for ' + sourceFile.fileName);
       }
 
-      if (!this._packageMetadataManager.isAedocSupportedFor(sourceFile.fileName)) {
-        const packageJsonPath: string | undefined = this._packageJsonLookup
-          .tryGetPackageJsonFilePathFor(sourceFile.fileName);
-
-        if (packageJsonPath) {
-          throw new Error(`Please add a field such as "tsdoc": { "tsdocFlavor": "AEDoc" } to this file:\n`
-            + packageJsonPath);
-        } else {
-          throw new Error(`The specified entry point does not appear to have an associated package.json file:\n`
-            + sourceFile.fileName);
+      if (this._program.isSourceFileFromExternalLibrary(sourceFile)) {
+        if (!this._packageMetadataManager.isAedocSupportedFor(sourceFile.fileName)) {
+          const packageJsonPath: string | undefined = this._packageJsonLookup
+            .tryGetPackageJsonFilePathFor(sourceFile.fileName);
+
+          if (packageJsonPath) {
+            throw new Error(`Please add a field such as "tsdoc": { "tsdocFlavor": "AEDoc" } to this file:\n`
+              + packageJsonPath);
+          } else {
+            throw new Error(`The specified entry point does not appear to have an associated package.json file:\n`
+              + sourceFile.fileName);
+          }
         }
       }
 
@@ -314,9 +321,11 @@ export class AstSymbolTable {
 
         // If the file is from a package that does not support AEDoc, then we process the
         // symbol itself, but we don't attempt to process any parent/children of it.
-        if (!this._packageMetadataManager.isAedocSupportedFor(
-          followedSymbol.declarations[0].getSourceFile().fileName)) {
-          nominal = true;
+        const followedSymbolSourceFile: ts.SourceFile = followedSymbol.declarations[0].getSourceFile();
+        if (this._program.isSourceFileFromExternalLibrary(followedSymbolSourceFile)) {
+          if (!this._packageMetadataManager.isAedocSupportedFor(followedSymbolSourceFile.fileName)) {
+            nominal = true;
+          }
         }
 
         let parentAstSymbol: AstSymbol | undefined = undefined;

apps/api-extractor/src/generators/dtsRollup/DtsRollupGenerator.ts

@@ -75,7 +75,8 @@ export class DtsRollupGenerator {
     this._context = context;
     this._typeChecker = context.typeChecker;
     this._tsdocParser = new tsdoc.TSDocParser();
-    this._astSymbolTable = new AstSymbolTable(this._context.typeChecker, this._context.packageJsonLookup);
+    this._astSymbolTable = new AstSymbolTable(this._context.program, this._context.typeChecker,
+      this._context.packageJsonLookup, context.logger);
   }
 
   /**

apps/api-extractor/src/generators/dtsRollup/PackageMetadataManager.ts

@@ -1,10 +1,17 @@
 // Copyright (c) Microsoft Corporation. All rights reserved. Licensed under the MIT license.
 // See LICENSE in the project root for license information.
 
+import * as path from 'path';
+
 import {
   PackageJsonLookup,
-  IPackageJson
+  IPackageJson,
+  FileSystem,
+  JsonFile,
+  NewlineKind
 } from '@microsoft/node-core-library';
+import { Extractor } from '../../extractor/Extractor';
+import { ILogger } from '../../extractor/ILogger';
 
 /**
  * Represents analyzed information for a package.json file.
@@ -26,37 +33,64 @@ export class PackageMetadata {
    */
   public readonly aedocSupported: boolean;
 
-  private readonly _packageJsonLookup: PackageJsonLookup;
-
-  public constructor(packageJsonPath: string, packageJsonLookup: PackageJsonLookup) {
-    this._packageJsonLookup = packageJsonLookup;
+  public constructor(packageJsonPath: string, packageJson: IPackageJson, aedocSupported: boolean) {
     this.packageJsonPath = packageJsonPath;
-
-    this.packageJson = this._packageJsonLookup.loadPackageJson(packageJsonPath);
-
-    this.aedocSupported = false;
-
-    if (this.packageJson.tsdoc) {
-      if (this.packageJson.tsdoc.tsdocFlavor) {
-        if (this.packageJson.tsdoc.tsdocFlavor.toUpperCase() === 'AEDOC') {
-          this.aedocSupported = true;
-        }
-      }
-    }
+    this.packageJson = packageJson;
+    this.aedocSupported = aedocSupported;
   }
 }
 
 /**
  * This class maintains a cache of analyzed information obtained from package.json
  * files.  It is built on top of the PackageJsonLookup class.
+ *
+ * @remarks
+ *
+ * IMPORTANT: Don't use PackageMetadataManager to analyze source files from the current project:
+ * 1. Files such as tsdoc-metadata.json may not have been built yet, and thus may contain incorrect information.
+ * 2. The current project is not guaranteed to have a package.json file at all.  For example, API Extractor can
+ *    be invoked on a bare .d.ts file.
+ *
+ * Use ts.program.isSourceFileFromExternalLibrary() to test source files before passing the to PackageMetadataManager.
  */
 export class PackageMetadataManager {
+  public static tsdocMetadataFilename: string = 'tsdoc-metadata.json';
+
   private readonly _packageJsonLookup: PackageJsonLookup;
+  private readonly _logger: ILogger;
   private readonly _packageMetadataByPackageJsonPath: Map<string, PackageMetadata>
     = new Map<string, PackageMetadata>();
 
-  public constructor(packageJsonLookup: PackageJsonLookup) {
+  public static writeTsdocMetadataFile(packageJsonFolder: string): void {
+    // This feature is still being standardized: https://github.com/Microsoft/tsdoc/issues/7
+    // In the future we will use the @microsoft/tsdoc library to read this file.
+    const tsdocMetadataPath: string = path.join(packageJsonFolder,
+      'dist', PackageMetadataManager.tsdocMetadataFilename);
+
+    const fileObject: Object = {
+      tsdocVersion: '0.12',
+      toolPackages: [
+        {
+           packageName: '@microsoft/api-extractor',
+           packageVersion: Extractor.version
+        }
+      ]
+    };
+
+    const fileContent: string =
+      '// This file is read by tools that parse documentation comments conforming to the TSDoc standard.\n'
+      + '// It should be published with your NPM package.  It should not be tracked by Git.\n'
+      + JsonFile.stringify(fileObject);
+
+    FileSystem.writeFile(tsdocMetadataPath, fileContent, {
+      convertLineEndings: NewlineKind.CrLf,
+      ensureFolderExists: true
+    });
+  }
+
+  public constructor(packageJsonLookup: PackageJsonLookup, logger: ILogger) {
     this._packageJsonLookup = packageJsonLookup;
+    this._logger = logger;
   }
 
   /**
@@ -72,16 +106,34 @@ export class PackageMetadataManager {
     }
     let packageMetadata: PackageMetadata | undefined
       = this._packageMetadataByPackageJsonPath.get(packageJsonFilePath);
+
     if (!packageMetadata) {
-      packageMetadata = new PackageMetadata(packageJsonFilePath, this._packageJsonLookup);
+      const packageJson: IPackageJson = this._packageJsonLookup.loadPackageJson(packageJsonFilePath);
+
+      const packageJsonFolder: string = path.dirname(packageJsonFilePath);
+
+      // This feature is still being standardized: https://github.com/Microsoft/tsdoc/issues/7
+      // In the future we will use the @microsoft/tsdoc library to read this file.
+      let aedocSupported: boolean = false;
+
+      const tsdocMetadataPath: string = path.join(packageJsonFolder,
+        'dist', PackageMetadataManager.tsdocMetadataFilename);
+
+      if (FileSystem.exists(tsdocMetadataPath)) {
+        this._logger.logVerbose('Found metadata in ' + tsdocMetadataPath);
+        // If the file exists at all, assume it was written by API Extractor
+        aedocSupported = true;
+      }
+
+      packageMetadata = new PackageMetadata(packageJsonFilePath, packageJson, aedocSupported);
       this._packageMetadataByPackageJsonPath.set(packageJsonFilePath, packageMetadata);
     }
+
     return packageMetadata;
   }
 
   /**
-   * Returns true if the source file has an associated PackageMetadata object
-   * with aedocSupported=true.
+   * Returns true if the source file is part of a package whose .d.ts files support AEDoc annotations.
    */
   public isAedocSupportedFor(sourceFilePath: string): boolean {
     const packageMetadata: PackageMetadata | undefined = this.tryFetchPackageMetadata(sourceFilePath);

apps/api-extractor/src/start.ts

@@ -3,18 +3,14 @@
 
 import * as os from 'os';
 import * as colors from 'colors';
-import * as path from 'path';
 
-import { FileConstants } from '@microsoft/node-core-library';
+import { PackageJsonLookup } from '@microsoft/node-core-library';
 
 import { ApiExtractorCommandLine } from './cli/ApiExtractorCommandLine';
 
-const myPackageJsonFilename: string = path.resolve(path.join(
-  __dirname, '..', FileConstants.PackageJson)
-);
-const myPackageJson: { version: string } = require(myPackageJsonFilename);
+const myPackageVersion: string = PackageJsonLookup.loadOwnPackageJson(__dirname, '..').version;
 
-console.log(os.EOL + colors.bold(`api-extractor ${myPackageJson.version} `
+console.log(os.EOL + colors.bold(`api-extractor ${myPackageVersion} `
   + colors.cyan(' - http://aka.ms/extractor') + os.EOL));
 
 const parser: ApiExtractorCommandLine = new ApiExtractorCommandLine();