yarn run v1.22.17
$ yarn build:lib && yarn build:changelog
$ tsc
src/params.ts:16:14 - error TS2322: Type 'string | number' is not assignable to type 'string'.
  Type 'number' is not assignable to type 'string'.

16     return { generator, action, templates }
                ~~~~~~~~~

  src/types.ts:48:3
    48   generator: string
         ~~~~~~~~~
    The expected type comes from property 'generator' which is declared here on type 'ParamsResult'

src/params.ts:16:25 - error TS2322: Type 'string | number' is not assignable to type 'string'.
  Type 'number' is not assignable to type 'string'.

16     return { generator, action, templates }
                           ~~~~~~

  src/types.ts:49:3
    49   action: string
         ~~~~~~
    The expected type comes from property 'action' which is declared here on type 'ParamsResult'

src/params.ts:18:42 - error TS2339: Property 'split' does not exist on type 'string | number'.
  Property 'split' does not exist on type 'number'.

18   const [mainAction, subaction] = action.split(':')
                                            ~~~~~

src/params.ts:20:45 - error TS2345: Argument of type 'string | number' is not assignable to parameter of type 'string'.
  Type 'number' is not assignable to type 'string'.

20   const actionfolder = path.join(templates, generator, mainAction)
                                               ~~~~~~~~~

src/params.ts:43:3 - error TS2322: Type '{ templates: string; actionfolder: string; generator: string | number; action: string | number; subaction: any; } & { [argName: string]: any; '--'?: (string | number)[]; } & { name: string | number; }' is not assignable to type 'ParamsResult'.
  Type '{ templates: string; actionfolder: string; generator: string | number; action: string | number; subaction: any; } & { [argName: string]: any; '--'?: (string | number)[]; } & { name: string | number; }' is not assignable to type '{ templates: string; generator: string; action: string; subaction?: string; actionfolder?: string; name?: string; dry?: boolean; }'.
    Types of property 'generator' are incompatible.
      Type 'string | number' is not assignable to type 'string'.
        Type 'number' is not assignable to type 'string'.

43   return args
     ~~~~~~~~~~~


Found 5 errors in the same file, starting at: src/params.ts:16