sfcc/prefer-generated-hook-types

Require registered Salesforce system hook exports to use their generated SfccHooks function type.

Why

The synchronized Script API declarations define the hook parameters and return type. A broad or handwritten annotation can hide changes in that platform contract.

Incorrect

/** @type {Function} */
function calculate(lineItemCtnr) {
  // ...
}

exports.calculate = calculate

Correct

/** @type {SfccHooks.OrderCalculate} */
function calculate(lineItemCtnr) {
  // ...
}

exports.calculate = calculate

The rule derives SfccHooks.OrderCalculate from the registered dw.order.calculate extension point and verifies that the alias exists in the synchronized .b2c-script-types/types/sfcc-hooks.generated.d.ts declarations. It offers an ESLint suggestion for missing and incorrect @type annotations only when typescript-sfcc generated that alias.

Project-specific hooks and system extension points without a generated Salesforce Script API declaration are ignored. Run sfcc-ts-sync-types before ESLint to refresh the generated aliases.