feat(useStrapi): improve types for v5 and v4

[ChristopheCVB]

Types of changes

• Bug fix (a non-breaking change which fixes an issue)
• New feature (a non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Description

Added types for fields, sort and populate in Strapi5RequestParams

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes (if not applicable, please state why)

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[benjamincanac]

@XanderD99 Could I ask you to review this?

[XanderD99]

Implementation looks good to me. I would suggest tho to add something like this to it. Since the populate can be an object as well:

https://docs.strapi.io/dev-docs/api/rest/populate-select

type StrapiRequestParamPopulate<T> = {
  [K in keyof T]: T[K] extends object
  ? T[K] extends Array<infer I>
  ? `${Exclude<K, symbol>}` | `${Exclude<K, symbol>}.${StrapiRequestParamPopulate<I>}`
  : `${Exclude<K, symbol>}` | `${Exclude<K, symbol>}.${StrapiRequestParamPopulate<T[K]>}`
  : never;
}[keyof T]

interface Strapi5RequestParams<T> {
  populate?: ValidPopulateKeys<T> extends never
  ? never // Exclude `populate` if no sub-objects exist.
  : '*' // Populate all relations.
  | StrapiRequestParamPopulate<T> // String paths like "field.subfield".
  | Array<StrapiRequestParamPopulate<T>> // Array of string paths.
  | { // Nested object for advanced populates.
    [K in keyof T]?: T[K] extends object
    ? T[K] extends Array<infer I>
    ? Strapi5RequestParams<I> | '*' // Nested array population or wildcard.
    : Strapi5RequestParams<T[K]> | '*' // Nested object population or wildcard.
    : never; // Non-object keys cannot have nested populate.
  }
}

type ValidPopulateKeys<T> = keyof {
  [K in keyof T as T[K] extends object ? K : never]: T[K];
};

[benjamincanac]

Merging this, @XanderD99 your suggestion can be done in another PR I guess.