feat: add CLI option for schema-only generation

Author: sserrata

README.md

@@ -307,6 +307,16 @@ yarn docusaurus gen-api-docs all --all-versions
 
 > This will generate API docs for all versions of all the OpenAPI specification (OAS) files referenced in your `docusaurus-plugin-openapi-docs` config.
 
+To generate only schema MDX files—without updating the sidebar or requiring `showSchemas` in your plugin config—use the `--schemas-only` flag:
+
+```bash
+yarn docusaurus gen-api-docs petstore --schemas-only
+```
+
+> This command writes the schema pages to the configured output directory while leaving other generated docs untouched.
+
+The `--schemas-only` flag is also available for `gen-api-docs:version`.
+
 ### Cleaning API Docs
 
 To clean/remove all API Docs, run the following command from the root directory of your project:

demo/docs/intro.mdx

@@ -363,6 +363,14 @@ Example:
 yarn docusaurus gen-api-docs petstore
 ```
 
+To generate only schema MDX files—without updating the sidebar or requiring `showSchemas` in your plugin config—use the `--schemas-only` flag:
+
+```bash title="generating only schema docs for 'petstore'"
+yarn docusaurus gen-api-docs petstore --schemas-only
+```
+
+> This command writes the schema pages to the configured output directory while leaving other generated docs untouched.
+
 ### Cleaning API Docs
 
 To clean/remove all API Docs, run the following command from the root directory of your project:

packages/docusaurus-plugin-openapi-docs/README.md

@@ -328,6 +328,16 @@ yarn docusaurus gen-api-docs all --all-versions
 
 > This will generate API docs for all versions of all the OpenAPI specification (OAS) files referenced in your `docusaurus-plugin-openapi-docs` config.
 
+To generate only schema MDX files—without updating the sidebar or requiring `showSchemas` in your plugin config—use the `--schemas-only` flag:
+
+```bash
+yarn docusaurus gen-api-docs petstore --schemas-only
+```
+
+> This command writes the schema pages to the configured output directory while leaving other generated docs untouched.
+
+The `--schemas-only` flag is also available for `gen-api-docs:version`.
+
 ### Cleaning API Docs
 
 To clean/remove all API Docs, run the following command from the root directory of your project:

packages/docusaurus-plugin-openapi-docs/src/index.ts

@@ -123,9 +123,12 @@ export default function pluginOpenAPIDocs(
       markdownGenerators,
       downloadUrl,
       sidebarOptions,
+      schemasOnly,
       disableCompression,
     } = options;
 
+    const isSchemasOnly = schemasOnly === true;
+
     // Remove trailing slash before proceeding
     outputDir = outputDir.replace(/\/$/, "");
 
@@ -160,7 +163,7 @@ export default function pluginOpenAPIDocs(
       }
 
       // TODO: figure out better way to set default
-      if (Object.keys(sidebarOptions ?? {}).length > 0) {
+      if (!isSchemasOnly && Object.keys(sidebarOptions ?? {}).length > 0) {
         const sidebarSlice = generateSidebarSlice(
           sidebarOptions!,
           options,
@@ -332,6 +335,9 @@ custom_edit_url: null
         }
         const markdown = pageGeneratorByType[item.type](item as any);
         item.markdown = markdown;
+        if (isSchemasOnly && item.type !== "schema") {
+          return;
+        }
         if (item.type === "api") {
           // opportunity to compress JSON
           // const serialize = (o: any) => {
@@ -668,10 +674,12 @@ custom_edit_url: null
         .arguments("<id>")
         .option("-p, --plugin-id <plugin>", "OpenAPI docs plugin ID.")
         .option("--all-versions", "Generate all versions.")
+        .option("--schemas-only", "Generate only schema docs.")
         .action(async (id, instance) => {
           const options = instance.opts();
           const pluginId = options.pluginId;
           const allVersions = options.allVersions;
+          const schemasOnly = options.schemasOnly;
           const pluginInstances = getPluginInstances(plugins);
           let targetConfig: any;
           let targetDocsPluginId: any;
@@ -698,6 +706,9 @@ custom_edit_url: null
             targetConfig = config;
           }
 
+          const withSchemaOverride = (apiOptions: APIOptions): APIOptions =>
+            schemasOnly ? { ...apiOptions, schemasOnly: true } : apiOptions;
+
           if (id === "all") {
             if (targetConfig[id]) {
               console.error(
@@ -707,12 +718,10 @@ custom_edit_url: null
               );
             } else {
               Object.keys(targetConfig).forEach(async function (key) {
-                await generateApiDocs(targetConfig[key], targetDocsPluginId);
+                const apiOptions = withSchemaOverride(targetConfig[key]);
+                await generateApiDocs(apiOptions, targetDocsPluginId);
                 if (allVersions) {
-                  await generateAllVersions(
-                    targetConfig[key],
-                    targetDocsPluginId
-                  );
+                  await generateAllVersions(apiOptions, targetDocsPluginId);
                 }
               });
             }
@@ -721,9 +730,10 @@ custom_edit_url: null
               chalk.red(`ID '${id}' does not exist in OpenAPI docs config.`)
             );
           } else {
-            await generateApiDocs(targetConfig[id], targetDocsPluginId);
+            const apiOptions = withSchemaOverride(targetConfig[id]);
+            await generateApiDocs(apiOptions, targetDocsPluginId);
             if (allVersions) {
-              await generateAllVersions(targetConfig[id], targetDocsPluginId);
+              await generateAllVersions(apiOptions, targetDocsPluginId);
             }
           }
         });
@@ -736,9 +746,11 @@ custom_edit_url: null
         .usage("<id:version>")
         .arguments("<id:version>")
         .option("-p, --plugin-id <plugin>", "OpenAPI docs plugin ID.")
+        .option("--schemas-only", "Generate only schema docs.")
         .action(async (id, instance) => {
           const options = instance.opts();
           const pluginId = options.pluginId;
+          const schemasOnly = options.schemasOnly;
           const pluginInstances = getPluginInstances(plugins);
           let targetConfig: any;
           let targetDocsPluginId: any;
@@ -767,6 +779,9 @@ custom_edit_url: null
           const [parentId, versionId] = id.split(":");
           const parentConfig = Object.assign({}, targetConfig[parentId]);
 
+          const withSchemaOverride = (apiOptions: APIOptions): APIOptions =>
+            schemasOnly ? { ...apiOptions, schemasOnly: true } : apiOptions;
+
           const version = parentConfig.version as string;
           const label = parentConfig.label as string;
           const baseUrl = parentConfig.baseUrl as string;
@@ -796,10 +811,10 @@ custom_edit_url: null
               await generateVersions(mergedVersions, parentConfig.outputDir);
               Object.keys(versions).forEach(async (key) => {
                 const versionConfig = versions[key];
-                const mergedConfig = {
+                const mergedConfig = withSchemaOverride({
                   ...parentConfig,
                   ...versionConfig,
-                };
+                });
                 await generateApiDocs(mergedConfig, targetDocsPluginId);
               });
             }
@@ -811,10 +826,10 @@ custom_edit_url: null
             );
           } else {
             const versionConfig = versions[versionId];
-            const mergedConfig = {
+            const mergedConfig = withSchemaOverride({
               ...parentConfig,
               ...versionConfig,
-            };
+            });
             await generateVersions(mergedVersions, parentConfig.outputDir);
             await generateApiDocs(mergedConfig, targetDocsPluginId);
           }

packages/docusaurus-plugin-openapi-docs/src/openapi/openapi.test.ts

@@ -11,6 +11,8 @@ import path from "path";
 import { posixPath } from "@docusaurus/utils";
 
 import { readOpenapiFiles } from ".";
+import { processOpenapiFile } from "./openapi";
+import type { APIOptions, SidebarOptions } from "../types";
 
 // npx jest packages/docusaurus-plugin-openapi/src/openapi/openapi.test.ts --watch
 
@@ -37,4 +39,60 @@ describe("openapi", () => {
       ).toBeDefined();
     });
   });
+
+  describe("schemasOnly", () => {
+    it("includes schema metadata when showSchemas is disabled", async () => {
+      const openapiData = {
+        openapi: "3.0.0",
+        info: {
+          title: "Schema Only",
+          version: "1.0.0",
+        },
+        paths: {
+          "/ping": {
+            get: {
+              summary: "Ping",
+              responses: {
+                "200": {
+                  description: "OK",
+                },
+              },
+            },
+          },
+        },
+        components: {
+          schemas: {
+            WithoutTags: {
+              title: "Without Tags",
+              type: "object",
+              properties: {
+                value: {
+                  type: "string",
+                },
+              },
+            },
+          },
+        },
+      };
+
+      const options: APIOptions = {
+        specPath: "dummy", // required by the type but unused in this context
+        outputDir: "build",
+        showSchemas: false,
+        schemasOnly: true,
+      };
+
+      const sidebarOptions = {} as SidebarOptions;
+
+      const [items] = await processOpenapiFile(
+        openapiData as any,
+        options,
+        sidebarOptions
+      );
+
+      const schemaItems = items.filter((item) => item.type === "schema");
+      expect(schemaItems).toHaveLength(1);
+      expect(schemaItems[0].id).toBe("without-tags");
+    });
+  });
 });

packages/docusaurus-plugin-openapi-docs/src/openapi/openapi.ts

@@ -95,6 +95,7 @@ function createItems(
   let items: PartialPage<ApiMetadata>[] = [];
   const infoIdSpaces = openapiData.info.title.replace(" ", "-").toLowerCase();
   const infoId = kebabCase(infoIdSpaces);
+  const schemasOnly = options?.schemasOnly === true;
 
   if (openapiData.info.description || openapiData.info.title) {
     // Only create an info page if we have a description.
@@ -434,6 +435,7 @@ function createItems(
   }
 
   if (
+    schemasOnly ||
     options?.showSchemas === true ||
     Object.entries(openapiData?.components?.schemas ?? {})
       .flatMap(([_, s]) => s["x-tags"])
@@ -443,7 +445,11 @@ function createItems(
     for (let [schema, schemaObject] of Object.entries(
       openapiData?.components?.schemas ?? {}
     )) {
-      if (options?.showSchemas === true || schemaObject["x-tags"]) {
+      if (
+        schemasOnly ||
+        options?.showSchemas === true ||
+        schemaObject["x-tags"]
+      ) {
         const baseIdSpaces =
           schemaObject?.title?.replace(" ", "-").toLowerCase() ?? "";
         const baseId = kebabCase(baseIdSpaces);

packages/docusaurus-plugin-openapi-docs/src/types.ts

@@ -51,6 +51,7 @@ export interface APIOptions {
   proxy?: string;
   markdownGenerators?: MarkdownGenerator;
   showSchemas?: boolean;
+  schemasOnly?: boolean;
   disableCompression?: boolean;
   maskCredentials?: boolean;
 }