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/**
* @fileoverview Defines a storage for rules.
* @author Nicholas C. Zakas
*/
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
var loadRules = require("./load-rules");
//------------------------------------------------------------------------------
// Privates
//------------------------------------------------------------------------------
var rules = Object.create(null);
//------------------------------------------------------------------------------
// Public Interface
//------------------------------------------------------------------------------
/**
* Registers a rule module for rule id in storage.
* @param {string} ruleId Rule id (file name).
* @param {Function} ruleModule Rule handler.
* @returns {void}
*/
function define(ruleId, ruleModule) {
rules[ruleId] = ruleModule;
}
/**
* Loads and registers all rules from passed rules directory.
* @param {string} [rulesDir] Path to rules directory, may be relative. Defaults to `lib/rules`.
* @param {string} cwd Current working directory
* @returns {void}
*/
function load(rulesDir, cwd) {
var newRules = loadRules(rulesDir, cwd);
Object.keys(newRules).forEach(function(ruleId) {
define(ruleId, newRules[ruleId]);
});
}
/**
* Registers all given rules of a plugin.
* @param {Object} pluginRules A key/value map of rule definitions.
* @param {string} pluginName The name of the plugin without prefix (`eslint-plugin-`).
* @returns {void}
*/
function importPlugin(pluginRules, pluginName) {
Object.keys(pluginRules).forEach(function(ruleId) {
var qualifiedRuleId = pluginName + "/" + ruleId,
rule = pluginRules[ruleId];
define(qualifiedRuleId, rule);
});
}
/**
* Access rule handler by id (file name).
* @param {string} ruleId Rule id (file name).
* @returns {Function} Rule handler.
*/
function get(ruleId) {
if (typeof rules[ruleId] === "string") {
return require(rules[ruleId]);
} else {
return rules[ruleId];
}
}
/**
* Reset rules storage.
* Should be used only in tests.
* @returns {void}
*/
function testClear() {
rules = Object.create(null);
}
module.exports = {
define: define,
load: load,
import: importPlugin,
get: get,
testClear: testClear,
/**
* Resets rules to its starting state. Use for tests only.
* @returns {void}
*/
testReset: function() {
testClear();
load();
}
};
//------------------------------------------------------------------------------
// Initialization
//------------------------------------------------------------------------------
// loads built-in rules
load();
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