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111 lines
2.7 KiB
111 lines
2.7 KiB
/**
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* @fileoverview Shared functions to work with configs.
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* @author Nicholas C. Zakas
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*/
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"use strict";
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//-----------------------------------------------------------------------------
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// Functions
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//-----------------------------------------------------------------------------
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/**
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* Parses a ruleId into its plugin and rule parts.
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* @param {string} ruleId The rule ID to parse.
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* @returns {{pluginName:string,ruleName:string}} The plugin and rule
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* parts of the ruleId;
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*/
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function parseRuleId(ruleId) {
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let pluginName, ruleName;
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// distinguish between core rules and plugin rules
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if (ruleId.includes("/")) {
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// mimic scoped npm packages
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if (ruleId.startsWith("@")) {
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pluginName = ruleId.slice(0, ruleId.lastIndexOf("/"));
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} else {
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pluginName = ruleId.slice(0, ruleId.indexOf("/"));
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}
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ruleName = ruleId.slice(pluginName.length + 1);
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} else {
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pluginName = "@";
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ruleName = ruleId;
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}
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return {
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pluginName,
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ruleName
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};
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}
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/**
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* Retrieves a rule instance from a given config based on the ruleId.
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* @param {string} ruleId The rule ID to look for.
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* @param {FlatConfig} config The config to search.
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* @returns {import("../shared/types").Rule|undefined} The rule if found
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* or undefined if not.
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*/
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function getRuleFromConfig(ruleId, config) {
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const { pluginName, ruleName } = parseRuleId(ruleId);
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const plugin = config.plugins && config.plugins[pluginName];
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let rule = plugin && plugin.rules && plugin.rules[ruleName];
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// normalize function rules into objects
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if (rule && typeof rule === "function") {
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rule = {
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create: rule
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};
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}
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return rule;
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}
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/**
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* Gets a complete options schema for a rule.
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* @param {{create: Function, schema: (Array|null)}} rule A new-style rule object
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* @returns {Object} JSON Schema for the rule's options.
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*/
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function getRuleOptionsSchema(rule) {
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if (!rule) {
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return null;
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}
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const schema = rule.schema || rule.meta && rule.meta.schema;
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if (Array.isArray(schema)) {
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if (schema.length) {
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return {
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type: "array",
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items: schema,
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minItems: 0,
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maxItems: schema.length
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};
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}
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return {
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type: "array",
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minItems: 0,
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maxItems: 0
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};
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}
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// Given a full schema, leave it alone
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return schema || null;
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}
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//-----------------------------------------------------------------------------
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// Exports
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//-----------------------------------------------------------------------------
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module.exports = {
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parseRuleId,
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getRuleFromConfig,
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getRuleOptionsSchema
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};
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