[BUG] [typescript-fetch] method name conflicts xxxRaw

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?

• Have you validated the input using an OpenAPI validator (example)?

• Have you tested with the latest master to confirm the issue still exists?

• Have you searched for related issues/PRs?

• [] What's the actual output vs expected output?

• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

https://try.gitea.io/swagger.v1.json

Provides method renderMarkdown and renderMarkdownRaw

renderMarkdown generate

1. public method renderMarkdown()
2. and public internal renderMarkdownRaw(), seems for internal use

renderMarkdownRaw generate

1. public method renderMarkdownRaw()
2. and public internal renderMarkdownRawRaw(), seems for internal use

Two renderMarkdownRaw() are not same

openapi-generator version

OpenAPI declaration file content or url

https://try.gitea.io/swagger.v1.json

Generation Details

Steps to reproduce

$ openapi-generator-cli generate -g typescript-fetch -i https://try.gitea.io/swagger.v1.json -o src
$ tsc --init
$ tsc --outDir dist
src/apis/MiscellaneousApi.ts(204,11): error TS2393: Duplicate function implementation.
src/apis/MiscellaneousApi.ts(312,11): error TS2393: Duplicate function implementation.
src/apis/index.ts(10,1): error TS2308: Module './RepositoryApi' has already exported a member named 'CreateCurrentUserRepoRequest'. Consider explicitly re-exporting to resolve the ambiguity.
src/runtime.ts(129,24): error TS2304: Cannot find name 'GlobalFetch'.

    /**
     * Render a markdown document as HTML
     */
    async renderMarkdownRaw(requestParameters: RenderMarkdownRequest, initOverrides?: RequestInit): Promise<runtime.ApiResponse<string>> {
        const queryParameters: any = {};

        const headerParameters: runtime.HTTPHeaders = {};

        headerParameters['Content-Type'] = 'application/json';

        // if (this.configuration && this.configuration.apiKey) {
        // ...
        // ... 

        return new runtime.TextApiResponse(response) as any;
    }

    /**
     * Render raw markdown as HTML
     */
    async renderMarkdownRaw(requestParameters: RenderMarkdownRawRequest, initOverrides?: RequestInit): Promise<string> {
        const response = await this.renderMarkdownRawRaw(requestParameters, initOverrides);
        return await response.value();
    }

Related issues/PRs

Suggest a fix

renderMarkdown generate

1. public method renderMarkdown()
2. and private internal #renderMarkdown()

renderMarkdownRaw generate

1. public method renderMarkdownRaw()
2. and private internal #renderMarkdownRaw()

class X {
    renderMarkdown() { return this.#renderMarkdownRaw() }
    // deprecate: renderMarkdownRaw() { console.log('renderMarkdown') }
    #renderMarkdown() { console.log('renderMarkdown') }

    renderMarkdownRaw() { return this.#renderMarkdownRawRaw() }
    // deprecate: renderMarkdownRawRaw() { console.log('renderMarkdownRaw') }
    #renderMarkdownRaw() { console.log('renderMarkdownRaw') }
}
const x = new X()
x.renderMarkdown()
x.renderMarkdownRaw()

Reproduce the generator command with https://try.gitea.io/swagger.v1.json, then inspect the generated src/apis/MiscellaneousApi.ts, src/apis/index.ts, and src/runtime.ts. Compare the duplicate method declarations and TypeScript compiler errors with the requested public/internal method behavior. Done means the generated typescript-fetch client compiles without the reported duplicate or export errors.