Handle projects without tsconfig files

Resolves #2304

CHANGELOG.md

@@ -4,6 +4,7 @@
 
 -   Added `stripYamlFrontmatter` config option to remove YAML frontmatter from README.md, #2381.
 -   Added `--excludeCategories` config option to remove reflections present in any excluded category, #1407.
+-   If no tsconfig.json file is present, TypeDoc will now attempt to compile without setting any compiler options, #2304.
 -   Navigation is now written to a JS file and built dynamically, which significantly decreases document generation time
     with large projects and also provides large space benefits. Themes may now override `DefaultTheme.buildNavigation`
     to customize the displayed navigation tree, #2287.

src/lib/utils/entry-point.ts

@@ -183,7 +183,7 @@ function getEntryPointsForPaths(
     logger: Logger,
     inputFiles: string[],
     options: Options,
-    programs = getEntryPrograms(logger, options),
+    programs = getEntryPrograms(inputFiles, logger, options),
 ): DocumentationEntryPoint[] {
     const baseDir = options.getValue("basePath") || deriveRootDir(inputFiles);
     const entryPoints: DocumentationEntryPoint[] = [];
@@ -234,7 +234,7 @@ export function getExpandedEntryPointsForPaths(
     logger: Logger,
     inputFiles: string[],
     options: Options,
-    programs = getEntryPrograms(logger, options),
+    programs = getEntryPrograms(inputFiles, logger, options),
 ): DocumentationEntryPoint[] {
     return getEntryPointsForPaths(
         logger,
@@ -284,9 +284,15 @@ function expandGlobs(inputFiles: string[], exclude: string[], logger: Logger) {
     return result;
 }
 
-function getEntryPrograms(logger: Logger, options: Options) {
+function getEntryPrograms(
+    inputFiles: string[],
+    logger: Logger,
+    options: Options,
+) {
     const rootProgram = ts.createProgram({
-        rootNames: options.getFileNames(),
+        rootNames: options.getFileNames().length
+            ? options.getFileNames()
+            : inputFiles,
         options: options.getCompilerOptions(),
         projectReferences: options.getProjectReferences(),
     });

src/lib/utils/options/readers/tsconfig.ts

@@ -21,7 +21,6 @@ import {
     tsdocModifierTags,
 } from "../tsdoc-defaults";
 import { unique } from "../../array";
-import { EntryPointStrategy } from "../../entry-point";
 import { findTsConfigFile, readTsConfig } from "../../tsconfig";
 
 function isSupportForTags(obj: unknown): obj is Record<`@${string}`, boolean> {
@@ -82,13 +81,6 @@ export class TSConfigReader implements OptionsReader {
                 logger.error(
                     `The tsconfig file ${nicePath(file)} does not exist`,
                 );
-            } else if (
-                container.getValue("entryPointStrategy") !==
-                EntryPointStrategy.Packages
-            ) {
-                logger.warn(
-                    "No tsconfig file found, this will prevent TypeDoc from finding your entry points.",
-                );
             }
             return;
         }