refactor(parser): start passing options object around instead of positional parameters

README.md

@@ -6,6 +6,7 @@ Mainly, it's because the original project maintainer [doesn't have time](https:/
 - ability to select which services to export and naming strategies for generated methods
 - support for non-ASCII characters
 - support for x-body-name header (compatible with Connexion v3.x)
+- ability to autoformat output with Prettier
 
 # OpenAPI Typescript Codegen
 

bin/index.js

@@ -20,10 +20,10 @@ const params = program
     .option('--exportCore <value>', 'Write core files to disk', true)
     .option('--exportServices <value>', 'Write services to disk', true)
     .option('--exportModels <value>', 'Write models to disk', true)
-    .option('--useOperationId <value>', 'Use operation id to generate operation names', true)
     .option('--exportSchemas <value>', 'Write schemas to disk', false)
     .option('--indent <value>', 'Indentation options [4, 2, tabs]', '4')
     .option('--postfixServices <value>', 'Service name postfix', 'Service')
+    .option('--useOperationId <value>', 'Use operation id to generate operation names', true)
     .option('--postfixModels <value>', 'Model name postfix')
     .option('--request <value>', 'Path to custom request file')
     .parse(process.argv)
@@ -41,22 +41,22 @@ const parseBooleanOrString = value => {
 
 if (OpenAPI) {
     OpenAPI.generate({
-        input: params.input,
-        output: params.output,
-        httpClient: params.client,
-        clientName: params.name,
-        useOptions: params.useOptions,
-        useUnionTypes: params.useUnionTypes,
         autoformat: JSON.parse(params.autoformat) === true,
+        clientName: params.name,
         exportCore: JSON.parse(params.exportCore) === true,
-        exportServices: parseBooleanOrString(params.exportServices),
         exportModels: parseBooleanOrString(params.exportModels),
         exportSchemas: JSON.parse(params.exportSchemas) === true,
-        useOperationId: JSON.parse(params.useOperationId) === true,
+        exportServices: parseBooleanOrString(params.exportServices),
+        httpClient: params.client,
         indent: params.indent,
-        postfixServices: params.postfixServices,
+        input: params.input,
+        output: params.output,
         postfixModels: params.postfixModels,
+        postfixServices: params.postfixServices,
         request: params.request,
+        useOperationId: JSON.parse(params.useOperationId) === true,
+        useOptions: params.useOptions,
+        useUnionTypes: params.useUnionTypes,
     })
         .then(() => {
             process.exit(0);

src/client/interfaces/Options.d.ts

@@ -0,0 +1,19 @@
+export interface Options {
+    autoformat?: boolean;
+    clientName?: string;
+    exportCore?: boolean;
+    exportModels?: boolean | string;
+    exportSchemas?: boolean;
+    exportServices?: boolean | string;
+    httpClient?: HttpClient;
+    indent?: Indent;
+    input: string | Record<string, any>;
+    output: string;
+    postfixModels?: string;
+    postfixServices?: string;
+    request?: string;
+    useOperationId?: boolean;
+    useOptions?: boolean;
+    useUnionTypes?: boolean;
+    write?: boolean;
+}

src/index.ts

@@ -1,3 +1,4 @@
+import type { Options } from './client/interfaces/Options';
 import { HttpClient } from './HttpClient';
 import { Indent } from './Indent';
 import { parse as parseV2 } from './openApi/v2';
@@ -12,26 +13,6 @@ import { writeClient } from './utils/writeClient';
 export { HttpClient } from './HttpClient';
 export { Indent } from './Indent';
 
-export type Options = {
-    input: string | Record<string, any>;
-    output: string;
-    httpClient?: HttpClient;
-    clientName?: string;
-    useOptions?: boolean;
-    useUnionTypes?: boolean;
-    autoformat?: boolean;
-    exportCore?: boolean;
-    exportServices?: boolean | string;
-    exportModels?: boolean | string;
-    exportSchemas?: boolean;
-    useOperationId?: boolean;
-    indent?: Indent;
-    postfixServices?: string;
-    postfixModels?: string;
-    request?: string;
-    write?: boolean;
-};
-
 /**
  * Generate the OpenAPI client. This method will read the OpenAPI specification and based on the
  * given language it will generate the client, including the typed models, validation schemas,
@@ -54,26 +35,21 @@ export type Options = {
  * @param request Path to custom request file
  * @param write Write the files to disk (true or false)
  */
-export const generate = async ({
-    input,
-    output,
-    httpClient = HttpClient.FETCH,
-    clientName,
-    useOptions = false,
-    useUnionTypes = false,
-    autoformat = false,
-    exportCore = true,
-    exportServices = true,
-    exportModels = true,
-    exportSchemas = false,
-    useOperationId = true,
-    indent = Indent.SPACE_4,
-    postfixServices = 'Service',
-    postfixModels = '',
-    request,
-    write = true,
-}: Options): Promise<void> => {
-    const openApi = isString(input) ? await getOpenApiSpec(input) : input;
+export const generate = async (options: Options): Promise<void> => {
+    const {
+        httpClient = HttpClient.FETCH,
+        useOptions = false,
+        useUnionTypes = false,
+        exportCore = true,
+        exportServices = true,
+        exportModels = true,
+        exportSchemas = false,
+        indent = Indent.SPACE_4,
+        postfixServices = 'Service',
+        postfixModels = '',
+        write = true,
+    } = options;
+    const openApi = isString(options.input) ? await getOpenApiSpec(options.input) : options.input;
     const openApiVersion = getOpenApiVersion(openApi);
     const templates = registerHandlebarTemplates({
         httpClient,
@@ -96,26 +72,24 @@ export const generate = async ({
     }
 
     if (parser) {
-        const client = parser(openApi, useOperationId);
+        const client = parser(openApi, options);
         const clientFinal = postProcessClient(client);
         if (write) {
             await writeClient(
                 clientFinal,
                 templates,
-                output,
+                options.output,
                 httpClient,
                 useOptions,
                 useUnionTypes,
-                autoformat,
                 exportCore,
                 exportServices,
                 exportModels,
                 exportSchemas,
                 indent,
                 postfixServices,
                 postfixModels,
-                clientName,
-                request
+                options
             );
         }
     }

src/openApi/v2/index.ts

@@ -1,4 +1,5 @@
 import type { Client } from '../../client/interfaces/Client';
+import type { Options } from '../../client/interfaces/Options';
 import type { OpenApi } from './interfaces/OpenApi';
 import { getModels } from './parser/getModels';
 import { getServer } from './parser/getServer';
@@ -9,13 +10,13 @@ import { getServiceVersion } from './parser/getServiceVersion';
  * Parse the OpenAPI specification to a Client model that contains
  * all the models, services and schema's we should output.
  * @param openApi The OpenAPI spec that we have loaded from disk.
- * @param useOperationId should the operationId be used when generating operation names
+ * @param options Options passed to the generate method
  */
-export const parse = (openApi: OpenApi, useOperationId: boolean): Client => {
+export const parse = (openApi: OpenApi, options: Options): Client => {
     const version = getServiceVersion(openApi.info.version);
     const server = getServer(openApi);
     const models = getModels(openApi);
-    const services = getServices(openApi, useOperationId);
+    const services = getServices(openApi, options);
 
     return { version, server, models, services };
 };

src/openApi/v2/parser/getOperation.ts

@@ -1,5 +1,6 @@
 import type { Operation } from '../../../client/interfaces/Operation';
 import type { OperationParameters } from '../../../client/interfaces/OperationParameters';
+import type { Options } from '../../../client/interfaces/Options';
 import type { OpenApi } from '../interfaces/OpenApi';
 import type { OpenApiOperation } from '../interfaces/OpenApiOperation';
 import { getOperationErrors } from './getOperationErrors';
@@ -18,10 +19,10 @@ export const getOperation = (
     tag: string,
     op: OpenApiOperation,
     pathParams: OperationParameters,
-    useOperationId: boolean
+    options: Options
 ): Operation => {
     const serviceName = getServiceName(tag);
-    const operationName = getOperationName(url, method, useOperationId, op.operationId);
+    const operationName = getOperationName(url, method, options, op.operationId);
 
     // Create a new operation object for this method.
     const operation: Operation = {

src/openApi/v2/parser/getOperationName.spec.ts

@@ -1,33 +1,51 @@
+import type { Options } from '../../../client/interfaces/Options';
 import { getOperationName } from './getOperationName';
 
 describe('getOperationName', () => {
     it('should produce correct result', () => {
-        expect(getOperationName('/api/v{api-version}/users', 'GET', true, 'GetAllUsers')).toEqual('getAllUsers');
-        expect(getOperationName('/api/v{api-version}/users', 'GET', true, undefined)).toEqual('getApiUsers');
-        expect(getOperationName('/api/v{api-version}/users', 'POST', true, undefined)).toEqual('postApiUsers');
-        expect(getOperationName('/api/v1/users', 'GET', true, 'GetAllUsers')).toEqual('getAllUsers');
-        expect(getOperationName('/api/v1/users', 'GET', true, undefined)).toEqual('getApiV1Users');
-        expect(getOperationName('/api/v1/users', 'POST', true, undefined)).toEqual('postApiV1Users');
-        expect(getOperationName('/api/v1/users/{id}', 'GET', true, undefined)).toEqual('getApiV1UsersById');
-        expect(getOperationName('/api/v1/users/{id}', 'POST', true, undefined)).toEqual('postApiV1UsersById');
+        const options: Options = {
+            input: '',
+            output: '',
+        };
+        expect(getOperationName('/api/v{api-version}/users', 'GET', options, 'GetAllUsers')).toEqual('getAllUsers');
+        expect(getOperationName('/api/v{api-version}/users', 'GET', options, undefined)).toEqual('getApiUsers');
+        expect(getOperationName('/api/v{api-version}/users', 'POST', options, undefined)).toEqual('postApiUsers');
+        expect(getOperationName('/api/v1/users', 'GET', options, 'GetAllUsers')).toEqual('getAllUsers');
+        expect(getOperationName('/api/v1/users', 'GET', options, undefined)).toEqual('getApiV1Users');
+        expect(getOperationName('/api/v1/users', 'POST', options, undefined)).toEqual('postApiV1Users');
+        expect(getOperationName('/api/v1/users/{id}', 'GET', options, undefined)).toEqual('getApiV1UsersById');
+        expect(getOperationName('/api/v1/users/{id}', 'POST', options, undefined)).toEqual('postApiV1UsersById');
 
-        expect(getOperationName('/api/v{api-version}/users', 'GET', true, 'fooBar')).toEqual('fooBar');
-        expect(getOperationName('/api/v{api-version}/users', 'GET', true, 'FooBar')).toEqual('fooBar');
-        expect(getOperationName('/api/v{api-version}/users', 'GET', true, 'Foo Bar')).toEqual('fooBar');
-        expect(getOperationName('/api/v{api-version}/users', 'GET', true, 'foo bar')).toEqual('fooBar');
-        expect(getOperationName('/api/v{api-version}/users', 'GET', true, 'foo-bar')).toEqual('fooBar');
-        expect(getOperationName('/api/v{api-version}/users', 'GET', true, 'foo_bar')).toEqual('fooBar');
-        expect(getOperationName('/api/v{api-version}/users', 'GET', true, 'foo.bar')).toEqual('fooBar');
-        expect(getOperationName('/api/v{api-version}/users', 'GET', true, '@foo.bar')).toEqual('fooBar');
-        expect(getOperationName('/api/v{api-version}/users', 'GET', true, '$foo.bar')).toEqual('fooBar');
-        expect(getOperationName('/api/v{api-version}/users', 'GET', true, '_foo.bar')).toEqual('fooBar');
-        expect(getOperationName('/api/v{api-version}/users', 'GET', true, '-foo.bar')).toEqual('fooBar');
-        expect(getOperationName('/api/v{api-version}/users', 'GET', true, '123.foo.bar')).toEqual('fooBar');
+        expect(getOperationName('/api/v{api-version}/users', 'GET', options, 'fooBar')).toEqual('fooBar');
+        expect(getOperationName('/api/v{api-version}/users', 'GET', options, 'FooBar')).toEqual('fooBar');
+        expect(getOperationName('/api/v{api-version}/users', 'GET', options, 'Foo Bar')).toEqual('fooBar');
+        expect(getOperationName('/api/v{api-version}/users', 'GET', options, 'foo bar')).toEqual('fooBar');
+        expect(getOperationName('/api/v{api-version}/users', 'GET', options, 'foo-bar')).toEqual('fooBar');
+        expect(getOperationName('/api/v{api-version}/users', 'GET', options, 'foo_bar')).toEqual('fooBar');
+        expect(getOperationName('/api/v{api-version}/users', 'GET', options, 'foo.bar')).toEqual('fooBar');
+        expect(getOperationName('/api/v{api-version}/users', 'GET', options, '@foo.bar')).toEqual('fooBar');
+        expect(getOperationName('/api/v{api-version}/users', 'GET', options, '$foo.bar')).toEqual('fooBar');
+        expect(getOperationName('/api/v{api-version}/users', 'GET', options, '_foo.bar')).toEqual('fooBar');
+        expect(getOperationName('/api/v{api-version}/users', 'GET', options, '-foo.bar')).toEqual('fooBar');
+        expect(getOperationName('/api/v{api-version}/users', 'GET', options, '123.foo.bar')).toEqual('fooBar');
 
-        expect(getOperationName('/api/v1/users', 'GET', false, 'GetAllUsers')).toEqual('getApiV1Users');
-        expect(getOperationName('/api/v{api-version}/users', 'GET', false, 'fooBar')).toEqual('getApiUsers');
+        const optionsIgnoreOperationId: Options = {
+            ...options,
+            useOperationId: false,
+        };
+        expect(getOperationName('/api/v1/users', 'GET', optionsIgnoreOperationId, 'GetAllUsers')).toEqual(
+            'getApiV1Users'
+        );
+        expect(getOperationName('/api/v{api-version}/users', 'GET', optionsIgnoreOperationId, 'fooBar')).toEqual(
+            'getApiUsers'
+        );
         expect(
-            getOperationName('/api/v{api-version}/users/{userId}/location/{locationId}', 'GET', false, 'fooBar')
+            getOperationName(
+                '/api/v{api-version}/users/{userId}/location/{locationId}',
+                'GET',
+                optionsIgnoreOperationId,
+                'fooBar'
+            )
         ).toEqual('getApiUsersByUserIdLocationByLocationId');
     });
 });

src/openApi/v2/parser/getOperationName.ts

@@ -1,18 +1,15 @@
 import camelCase from 'camelcase';
 
+import type { Options } from '../../../client/interfaces/Options';
 import sanitizeOperationName from '../../../utils/sanitizeOperationName';
 
 /**
  * Convert the input value to a correct operation (method) classname.
  * This will use the operation ID - if available - and otherwise fallback
  * on a generated name from the URL
  */
-export const getOperationName = (
-    url: string,
-    method: string,
-    useOperationId: boolean,
-    operationId?: string
-): string => {
+export const getOperationName = (url: string, method: string, options: Options, operationId?: string): string => {
+    const { useOperationId = true } = options;
     if (useOperationId && operationId) {
         return camelCase(sanitizeOperationName(operationId).trim());
     }

src/openApi/v2/parser/getServices.spec.ts

@@ -1,7 +1,13 @@
+import type { Options } from '../../../client/interfaces/Options';
 import { getServices } from './getServices';
 
 describe('getServices', () => {
     it('should create a unnamed service if tags are empty', () => {
+        const options: Options = {
+            input: '',
+            output: '',
+            useOperationId: false,
+        };
         const services = getServices(
             {
                 swagger: '2.0',
@@ -25,7 +31,7 @@ describe('getServices', () => {
                     },
                 },
             },
-            false
+            options
         );
 
         expect(services).toHaveLength(1);

src/openApi/v2/parser/getServices.ts

@@ -1,3 +1,4 @@
+import type { Options } from '../../../client/interfaces/Options';
 import type { Service } from '../../../client/interfaces/Service';
 import { unique } from '../../../utils/unique';
 import type { OpenApi } from '../interfaces/OpenApi';
@@ -7,7 +8,7 @@ import { getOperationParameters } from './getOperationParameters';
 /**
  * Get the OpenAPI services
  */
-export const getServices = (openApi: OpenApi, useOperationId: boolean): Service[] => {
+export const getServices = (openApi: OpenApi, options: Options): Service[] => {
     const services = new Map<string, Service>();
     for (const url in openApi.paths) {
         if (openApi.paths.hasOwnProperty(url)) {
@@ -30,15 +31,7 @@ export const getServices = (openApi: OpenApi, useOperationId: boolean): Service[
                             const op = path[method]!;
                             const tags = op.tags?.length ? op.tags.filter(unique) : ['Default'];
                             tags.forEach(tag => {
-                                const operation = getOperation(
-                                    openApi,
-                                    url,
-                                    method,
-                                    tag,
-                                    op,
-                                    pathParams,
-                                    useOperationId
-                                );
+                                const operation = getOperation(openApi, url, method, tag, op, pathParams, options);
 
                                 // If we have already declared a service, then we should fetch that and
                                 // append the new method to it. Otherwise we should create a new service object.

src/openApi/v3/index.ts

@@ -1,4 +1,5 @@
 import type { Client } from '../../client/interfaces/Client';
+import type { Options } from '../../client/interfaces/Options';
 import type { OpenApi } from './interfaces/OpenApi';
 import { getModels } from './parser/getModels';
 import { getServer } from './parser/getServer';
@@ -9,13 +10,13 @@ import { getServiceVersion } from './parser/getServiceVersion';
  * Parse the OpenAPI specification to a Client model that contains
  * all the models, services and schema's we should output.
  * @param openApi The OpenAPI spec that we have loaded from disk.
- * @param useOperationId should the operationId be used when generating operation names
+ * @param options Options passed to the generate method
  */
-export const parse = (openApi: OpenApi, useOperationId: boolean): Client => {
+export const parse = (openApi: OpenApi, options: Options): Client => {
     const version = getServiceVersion(openApi.info.version);
     const server = getServer(openApi);
     const models = getModels(openApi);
-    const services = getServices(openApi, useOperationId);
+    const services = getServices(openApi, options);
 
     return { version, server, models, services };
 };