59 lines
1.7 KiB
JavaScript
59 lines
1.7 KiB
JavaScript
'use strict';
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const { isPlainObject } = require('./utils/validateTypes');
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// Rule settings can take a number of forms, e.g.
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// a. "rule-name": null
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// b. "rule-name": [null, ...]
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// c. "rule-name": primaryOption
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// d. "rule-name": [primaryOption]
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// e. "rule-name": [primaryOption, secondaryOption]
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// Where primaryOption can be anything: primitive, Object, or Array.
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/**
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* This function normalizes all the possibilities into the
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* standard form: [primaryOption, secondaryOption]
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* Except in the cases with null, a & b, in which case
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* null is returned
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* @template T
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* @template {Object} O
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* @param {import('stylelint').ConfigRuleSettings<T, O>} rawSettings
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* @param {import('stylelint').Rule<T, O>} [rule]
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* @return {[T] | [T, O] | null}
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*/
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module.exports = function normalizeRuleSettings(rawSettings, rule) {
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if (rawSettings === null || rawSettings === undefined) {
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return null;
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}
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if (!Array.isArray(rawSettings)) {
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return [rawSettings];
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}
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// Everything below is an array ...
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const [primary, secondary] = rawSettings;
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if (rawSettings.length > 0 && (primary === null || primary === undefined)) {
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return null;
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}
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if (rule && !rule.primaryOptionArray) {
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return rawSettings;
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}
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// Everything below is a rule that CAN have an array for a primary option ...
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// (they might also have something else, e.g. rule-properties-order can
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// have the string "alphabetical")
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if (rawSettings.length === 1 && Array.isArray(primary)) {
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return rawSettings;
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}
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if (rawSettings.length === 2 && !isPlainObject(primary) && isPlainObject(secondary)) {
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return rawSettings;
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}
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// `T` must be an array type, but TSC thinks it's probably invalid to
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// cast `[T]` to `T` so we cast through `any` first.
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return [/** @type {T} */ (/** @type {any} */ (rawSettings))];
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};
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