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[BUG][typescript-axios] 'this' implicitly has type 'any' because it does not have a type annotation.

See original GitHub issue

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?
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Description

There is an error in the ts file generated from yaml.

async getTagsTagName(tagName: string, options?: any): Promise<(axios?: AxiosInstance, basePath?: string) => AxiosPromise<InlineResponse200>> {
    const localVarAxiosArgs = await TagApiAxiosParamCreator(configuration).getTagsTagName(tagName, options);
    return (axios: AxiosInstance = globalAxios, basePath: string = this.basePath) => {
        const axiosRequestArgs = {...localVarAxiosArgs.options, url: basePath + localVarAxiosArgs.url};
        return axios.request(axiosRequestArgs);
    };
},

> error TS2683: 'this' implicitly has type 'any' because it does not have a type annotation.
> return (axios: AxiosInstance = globalAxios, basePath: string = this.basePath) => {

openapi-generator version

OpenAPI declaration file content or url

openapi: 3.0.0
info:
  title: test
  version: '1.0'
  description:
  contact:
    name: name
    email: mail@example.com
servers:
  - url: 'http://localhost:4010'
    description: dev
paths:
  '/tags/{tag_name}':
    parameters:
      - schema:
          type: string
        name: tag_name
        in: path
        required: true
    get:
      summary:
      tags:
        - tag
      responses:
        '200':
          $ref: '#/components/responses/questionlist'
      operationId: get-tags-tag_name
      description:
components:
  schemas:
    QuestionHeader:
      title: QuestionHeader
      x-examples: {}
      x-tags:
        - question
      type: object
      description:
      properties:
        id:
          type: string
        title:
          type: string
        consumer_name:
          type: string
        consumer_icon_url:
          type: string
        answer_count:
          type: number
        tags:
          type: array
          items:
            $ref: '#/components/schemas/Tag'
        posted_at:
          type: string
          description: ''
          example: '2020-11-29 00:00:00'
          pattern: '\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}'
        status_type:
          type: string
          description:
          enum:
            - '0'
            - '1'
            - '9'
      required:
        - id
        - title
        - consumer_name
        - consumer_icon_url
        - answer_count
        - tags
        - posted_at
        - status_type
    Tag:
      title: Tag
      type: string
      description:
      x-tags:
        - tag
  securitySchemes: {}
  responses:
    questionlist:
      description:
      content:
        application/json:
          schema:
            type: object
            properties:
              totalCount:
                type: number
              questions:
                type: array
                items:
                  $ref: '#/components/schemas/QuestionHeader'
            required:
              - totalCount
              - questions
          examples: {}
  parameters: {}
tags:
  - name: answer
  - name: consumer
  - name: question
  - name: reply
  - name: tag

Generation Details

❯ docker run openapitools/openapi-generator-cli version 
5.0.0-SNAPSHOT

However, this problem does not occur in v5.0.0-beta3.

Steps to reproduce

Deploy yaml and run the script in docker.

❯ docker run -v ${PWD}/modules/api:/local openapitools/openapi-generator-cli generate -g typescript-axios -i /local/openapi/ask.v1.yaml -o /local/ask-api-client