import type { Linter } from "eslint";

import functional from "eslint-plugin-functional";
import typescriptEslint from "typescript-eslint";

export const règlesProgrammationFonctionnelle: Readonly<Linter.Config> = {
  name: "Programmation fonctionnelle",
  plugins: { functional: functional as typeof typescriptEslint.plugin },
  rules: {
    ...functional.configs.noExceptions.rules,
    ...functional.configs.noMutations.rules,
    ...functional.configs.externalTypeScriptRecommended.rules,
    ...functional.configs.stylistic.rules,
    // Choix stylistique.
    "@typescript-eslint/array-type": ["error", { default: "generic", readonly: "generic" }],
    // L'imposition d'une immutabilité plus importante est extrêmement contraignante.
    "functional/prefer-immutable-types": ["error", { enforcement: "ReadonlyShallow" }],
    // Le style tacite complique la lecture du code.
    "functional/prefer-tacit": "off",
    // Choix stylistique.
    "functional/readonly-type": ["error", "generic"],
    // L'imposition d'une immutabilité plus importante est extrêmement contraignante.
    "functional/type-declaration-immutability": [
      "error",
      {
        ignoreInterfaces: false,
        rules: [
          {
            comparator: "AtLeast",
            fixer: false,
            identifiers: "^(?!I?Mutable).+",
            immutability: "ReadonlyShallow",
            suggestions: false,
          },
        ],
      },
    ],
  },
};