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126 lines
4.2 KiB
JavaScript
126 lines
4.2 KiB
JavaScript
/**
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* @fileoverview Flat Config Array
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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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// Requirements
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//-----------------------------------------------------------------------------
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const { ConfigArray, ConfigArraySymbol } = require("@humanwhocodes/config-array");
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const { flatConfigSchema } = require("./flat-config-schema");
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const { RuleValidator } = require("./rule-validator");
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const { defaultConfig } = require("./default-config");
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const recommendedConfig = require("../../conf/eslint-recommended");
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const allConfig = require("../../conf/eslint-all");
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//-----------------------------------------------------------------------------
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// Helpers
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//-----------------------------------------------------------------------------
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const ruleValidator = new RuleValidator();
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/**
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* Splits a plugin identifier in the form a/b/c into two parts: a/b and c.
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* @param {string} identifier The identifier to parse.
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* @returns {{objectName: string, pluginName: string}} The parts of the plugin
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* name.
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*/
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function splitPluginIdentifier(identifier) {
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const parts = identifier.split("/");
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return {
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objectName: parts.pop(),
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pluginName: parts.join("/")
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};
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}
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//-----------------------------------------------------------------------------
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// Exports
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//-----------------------------------------------------------------------------
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/**
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* Represents an array containing configuration information for ESLint.
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*/
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class FlatConfigArray extends ConfigArray {
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/**
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* Creates a new instance.
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* @param {*[]} configs An array of configuration information.
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* @param {{basePath: string, baseConfig: FlatConfig}} options The options
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* to use for the config array instance.
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*/
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constructor(configs, { basePath, baseConfig = defaultConfig }) {
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super(configs, {
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basePath,
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schema: flatConfigSchema
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});
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this.unshift(baseConfig);
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}
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/* eslint-disable class-methods-use-this */
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/**
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* Replaces a config with another config to allow us to put strings
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* in the config array that will be replaced by objects before
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* normalization.
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* @param {Object} config The config to preprocess.
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* @returns {Object} The preprocessed config.
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*/
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[ConfigArraySymbol.preprocessConfig](config) {
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if (config === "eslint:recommended") {
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return recommendedConfig;
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}
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if (config === "eslint:all") {
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return allConfig;
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}
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return config;
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}
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/**
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* Finalizes the config by replacing plugin references with their objects
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* and validating rule option schemas.
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* @param {Object} config The config to finalize.
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* @returns {Object} The finalized config.
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* @throws {TypeError} If the config is invalid.
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*/
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[ConfigArraySymbol.finalizeConfig](config) {
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const { plugins, languageOptions, processor } = config;
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// Check parser value
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if (languageOptions && languageOptions.parser && typeof languageOptions.parser === "string") {
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const { pluginName, objectName: parserName } = splitPluginIdentifier(languageOptions.parser);
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if (!plugins || !plugins[pluginName] || !plugins[pluginName].parsers || !plugins[pluginName].parsers[parserName]) {
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throw new TypeError(`Key "parser": Could not find "${parserName}" in plugin "${pluginName}".`);
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}
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languageOptions.parser = plugins[pluginName].parsers[parserName];
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}
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// Check processor value
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if (processor && typeof processor === "string") {
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const { pluginName, objectName: processorName } = splitPluginIdentifier(processor);
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if (!plugins || !plugins[pluginName] || !plugins[pluginName].processors || !plugins[pluginName].processors[processorName]) {
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throw new TypeError(`Key "processor": Could not find "${processorName}" in plugin "${pluginName}".`);
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}
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config.processor = plugins[pluginName].processors[processorName];
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}
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ruleValidator.validate(config);
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return config;
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}
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/* eslint-enable class-methods-use-this */
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}
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exports.FlatConfigArray = FlatConfigArray;
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