2856 lines
81 KiB
JavaScript
2856 lines
81 KiB
JavaScript
/**
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* @fileoverview Main Linter Class
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* @author Gyandeep Singh
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* @author aladdin-add
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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 path = require("node:path"),
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eslintScope = require("eslint-scope"),
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evk = require("eslint-visitor-keys"),
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espree = require("espree"),
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merge = require("lodash.merge"),
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pkg = require("../../package.json"),
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{
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Legacy: {
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ConfigOps,
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ConfigValidator,
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environments: BuiltInEnvironments,
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},
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} = require("@eslint/eslintrc/universal"),
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Traverser = require("../shared/traverser"),
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{ SourceCode } = require("../languages/js/source-code"),
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applyDisableDirectives = require("./apply-disable-directives"),
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{ ConfigCommentParser } = require("@eslint/plugin-kit"),
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NodeEventGenerator = require("./node-event-generator"),
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createReportTranslator = require("./report-translator"),
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Rules = require("./rules"),
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createEmitter = require("./safe-emitter"),
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SourceCodeFixer = require("./source-code-fixer"),
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timing = require("./timing"),
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ruleReplacements = require("../../conf/replacements.json");
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const { getRuleFromConfig } = require("../config/flat-config-helpers");
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const { FlatConfigArray } = require("../config/flat-config-array");
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const { startTime, endTime } = require("../shared/stats");
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const { RuleValidator } = require("../config/rule-validator");
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const { assertIsRuleSeverity } = require("../config/flat-config-schema");
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const {
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normalizeSeverityToString,
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normalizeSeverityToNumber,
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} = require("../shared/severity");
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const { deepMergeArrays } = require("../shared/deep-merge-arrays");
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const jslang = require("../languages/js");
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const {
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activeFlags,
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inactiveFlags,
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getInactivityReasonMessage,
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} = require("../shared/flags");
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const debug = require("debug")("eslint:linter");
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const MAX_AUTOFIX_PASSES = 10;
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const DEFAULT_PARSER_NAME = "espree";
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const DEFAULT_ECMA_VERSION = 5;
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const commentParser = new ConfigCommentParser();
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const DEFAULT_ERROR_LOC = {
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start: { line: 1, column: 0 },
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end: { line: 1, column: 1 },
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};
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const parserSymbol = Symbol.for("eslint.RuleTester.parser");
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const { LATEST_ECMA_VERSION } = require("../../conf/ecma-version");
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const { VFile } = require("./vfile");
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const { ParserService } = require("../services/parser-service");
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const { FileContext } = require("./file-context");
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const { ProcessorService } = require("../services/processor-service");
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const { containsDifferentProperty } = require("../shared/option-utils");
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const STEP_KIND_VISIT = 1;
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const STEP_KIND_CALL = 2;
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//------------------------------------------------------------------------------
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// Typedefs
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//------------------------------------------------------------------------------
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/** @typedef {import("../shared/types").ConfigData} ConfigData */
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/** @typedef {import("../shared/types").Environment} Environment */
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/** @typedef {import("../shared/types").GlobalConf} GlobalConf */
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/** @typedef {import("../shared/types").LintMessage} LintMessage */
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/** @typedef {import("../shared/types").SuppressedLintMessage} SuppressedLintMessage */
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/** @typedef {import("../shared/types").ParserOptions} ParserOptions */
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/** @typedef {import("../shared/types").LanguageOptions} LanguageOptions */
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/** @typedef {import("../shared/types").Processor} Processor */
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/** @typedef {import("../types").Rule.RuleModule} Rule */
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/** @typedef {import("../shared/types").Times} Times */
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/** @typedef {import("@eslint/core").Language} Language */
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/** @typedef {import("@eslint/core").RuleSeverity} RuleSeverity */
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/** @typedef {import("@eslint/core").RuleConfig} RuleConfig */
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/** @typedef {import("../types").Linter.StringSeverity} StringSeverity */
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/* eslint-disable jsdoc/valid-types -- https://github.com/jsdoc-type-pratt-parser/jsdoc-type-pratt-parser/issues/4#issuecomment-778805577 */
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/**
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* @template T
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* @typedef {{ [P in keyof T]-?: T[P] }} Required
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*/
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/* eslint-enable jsdoc/valid-types -- https://github.com/jsdoc-type-pratt-parser/jsdoc-type-pratt-parser/issues/4#issuecomment-778805577 */
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/**
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* @typedef {Object} DisableDirective
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* @property {("disable"|"enable"|"disable-line"|"disable-next-line")} type Type of directive
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* @property {number} line The line number
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* @property {number} column The column number
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* @property {(string|null)} ruleId The rule ID
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* @property {string} justification The justification of directive
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*/
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/**
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* The private data for `Linter` instance.
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* @typedef {Object} LinterInternalSlots
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* @property {ConfigArray|null} lastConfigArray The `ConfigArray` instance that the last `verify()` call used.
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* @property {SourceCode|null} lastSourceCode The `SourceCode` instance that the last `verify()` call used.
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* @property {SuppressedLintMessage[]} lastSuppressedMessages The `SuppressedLintMessage[]` instance that the last `verify()` call produced.
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* @property {Map<string, Parser>} parserMap The loaded parsers.
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* @property {Times} times The times spent on applying a rule to a file (see `stats` option).
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* @property {Rules} ruleMap The loaded rules.
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*/
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/**
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* @typedef {Object} VerifyOptions
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* @property {boolean} [allowInlineConfig] Allow/disallow inline comments' ability
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* to change config once it is set. Defaults to true if not supplied.
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* Useful if you want to validate JS without comments overriding rules.
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* @property {boolean} [disableFixes] if `true` then the linter doesn't make `fix`
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* properties into the lint result.
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* @property {string} [filename] the filename of the source code.
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* @property {boolean | "off" | "warn" | "error"} [reportUnusedDisableDirectives] Adds reported errors for
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* unused `eslint-disable` directives.
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* @property {Function} [ruleFilter] A predicate function that determines whether a given rule should run.
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*/
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/**
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* @typedef {Object} ProcessorOptions
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* @property {(filename:string, text:string) => boolean} [filterCodeBlock] the
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* predicate function that selects adopt code blocks.
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* @property {Processor.postprocess} [postprocess] postprocessor for report
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* messages. If provided, this should accept an array of the message lists
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* for each code block returned from the preprocessor, apply a mapping to
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* the messages as appropriate, and return a one-dimensional array of
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* messages.
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* @property {Processor.preprocess} [preprocess] preprocessor for source text.
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* If provided, this should accept a string of source text, and return an
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* array of code blocks to lint.
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*/
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/**
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* @typedef {Object} FixOptions
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* @property {boolean | ((message: LintMessage) => boolean)} [fix] Determines
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* whether fixes should be applied.
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*/
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/**
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* @typedef {Object} InternalOptions
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* @property {string | null} warnInlineConfig The config name what `noInlineConfig` setting came from. If `noInlineConfig` setting didn't exist, this is null. If this is a config name, then the linter warns directive comments.
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* @property {StringSeverity} reportUnusedDisableDirectives Severity to report unused disable directives, if not "off" (boolean values were normalized).
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* @property {StringSeverity} reportUnusedInlineConfigs Severity to report unused inline configs, if not "off".
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*/
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//------------------------------------------------------------------------------
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// Helpers
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//------------------------------------------------------------------------------
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/**
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* Determines if a given object is Espree.
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* @param {Object} parser The parser to check.
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* @returns {boolean} True if the parser is Espree or false if not.
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*/
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function isEspree(parser) {
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return !!(parser === espree || parser[parserSymbol] === espree);
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}
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/**
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* Ensures that variables representing built-in properties of the Global Object,
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* and any globals declared by special block comments, are present in the global
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* scope.
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* @param {Scope} globalScope The global scope.
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* @param {Object} configGlobals The globals declared in configuration
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* @param {{exportedVariables: Object, enabledGlobals: Object}} commentDirectives Directives from comment configuration
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* @returns {void}
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*/
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function addDeclaredGlobals(
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globalScope,
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configGlobals,
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{ exportedVariables, enabledGlobals },
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) {
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// Define configured global variables.
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for (const id of new Set([
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...Object.keys(configGlobals),
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...Object.keys(enabledGlobals),
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])) {
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/*
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* `ConfigOps.normalizeConfigGlobal` will throw an error if a configured global value is invalid. However, these errors would
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* typically be caught when validating a config anyway (validity for inline global comments is checked separately).
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*/
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const configValue =
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configGlobals[id] === void 0
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? void 0
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: ConfigOps.normalizeConfigGlobal(configGlobals[id]);
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const commentValue = enabledGlobals[id] && enabledGlobals[id].value;
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const value = commentValue || configValue;
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const sourceComments =
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enabledGlobals[id] && enabledGlobals[id].comments;
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if (value === "off") {
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continue;
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}
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let variable = globalScope.set.get(id);
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if (!variable) {
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variable = new eslintScope.Variable(id, globalScope);
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globalScope.variables.push(variable);
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globalScope.set.set(id, variable);
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}
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variable.eslintImplicitGlobalSetting = configValue;
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variable.eslintExplicitGlobal = sourceComments !== void 0;
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variable.eslintExplicitGlobalComments = sourceComments;
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variable.writeable = value === "writable";
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}
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// mark all exported variables as such
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Object.keys(exportedVariables).forEach(name => {
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const variable = globalScope.set.get(name);
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if (variable) {
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variable.eslintUsed = true;
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variable.eslintExported = true;
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}
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});
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/*
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* "through" contains all references which definitions cannot be found.
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* Since we augment the global scope using configuration, we need to update
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* references and remove the ones that were added by configuration.
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*/
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globalScope.through = globalScope.through.filter(reference => {
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const name = reference.identifier.name;
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const variable = globalScope.set.get(name);
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if (variable) {
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/*
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* Links the variable and the reference.
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* And this reference is removed from `Scope#through`.
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*/
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reference.resolved = variable;
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variable.references.push(reference);
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return false;
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}
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return true;
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});
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}
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/**
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* creates a missing-rule message.
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* @param {string} ruleId the ruleId to create
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* @returns {string} created error message
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* @private
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*/
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function createMissingRuleMessage(ruleId) {
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return Object.hasOwn(ruleReplacements.rules, ruleId)
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? `Rule '${ruleId}' was removed and replaced by: ${ruleReplacements.rules[ruleId].join(", ")}`
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: `Definition for rule '${ruleId}' was not found.`;
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}
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/**
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* Updates a given location based on the language offsets. This allows us to
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* change 0-based locations to 1-based locations. We always want ESLint
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* reporting lines and columns starting from 1.
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* @param {Object} location The location to update.
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* @param {number} location.line The starting line number.
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* @param {number} location.column The starting column number.
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* @param {number} [location.endLine] The ending line number.
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* @param {number} [location.endColumn] The ending column number.
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* @param {Language} language The language to use to adjust the location information.
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* @returns {Object} The updated location.
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*/
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function updateLocationInformation(
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{ line, column, endLine, endColumn },
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language,
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) {
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const columnOffset = language.columnStart === 1 ? 0 : 1;
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const lineOffset = language.lineStart === 1 ? 0 : 1;
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// calculate separately to account for undefined
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const finalEndLine = endLine === void 0 ? endLine : endLine + lineOffset;
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const finalEndColumn =
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endColumn === void 0 ? endColumn : endColumn + columnOffset;
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return {
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line: line + lineOffset,
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column: column + columnOffset,
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endLine: finalEndLine,
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endColumn: finalEndColumn,
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};
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}
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/**
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* creates a linting problem
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* @param {Object} options to create linting error
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* @param {string} [options.ruleId] the ruleId to report
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* @param {Object} [options.loc] the loc to report
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* @param {string} [options.message] the error message to report
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* @param {RuleSeverity} [options.severity] the error message to report
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* @param {Language} [options.language] the language to use to adjust the location information
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* @returns {LintMessage} created problem, returns a missing-rule problem if only provided ruleId.
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* @private
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*/
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function createLintingProblem(options) {
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const {
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ruleId = null,
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loc = DEFAULT_ERROR_LOC,
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message = createMissingRuleMessage(options.ruleId),
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severity = 2,
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// fallback for eslintrc mode
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language = {
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columnStart: 0,
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lineStart: 1,
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},
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} = options;
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return {
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ruleId,
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message,
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...updateLocationInformation(
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{
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line: loc.start.line,
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column: loc.start.column,
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endLine: loc.end.line,
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endColumn: loc.end.column,
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},
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language,
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),
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severity,
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nodeType: null,
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};
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}
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/**
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* Wraps the value in an Array if it isn't already one.
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* @template T
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* @param {T|T[]} value Value to be wrapped.
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* @returns {Array} The value as an array.
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*/
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function asArray(value) {
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return Array.isArray(value) ? value : [value];
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}
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/**
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* Pushes a problem to inlineConfigProblems if ruleOptions are redundant.
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* @param {ConfigData} config Provided config.
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* @param {Object} loc A line/column location
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* @param {Array} problems Problems that may be added to.
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* @param {string} ruleId The rule ID.
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* @param {Array} ruleOptions The rule options, merged with the config's.
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* @param {Array} ruleOptionsInline The rule options from the comment.
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* @param {"error"|"warn"} severity The severity to report.
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* @returns {void}
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*/
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function addProblemIfSameSeverityAndOptions(
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config,
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loc,
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problems,
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ruleId,
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ruleOptions,
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ruleOptionsInline,
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severity,
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) {
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const existingConfigRaw = config.rules?.[ruleId];
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const existingConfig = existingConfigRaw
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? asArray(existingConfigRaw)
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: ["off"];
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const existingSeverity = normalizeSeverityToString(existingConfig[0]);
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const inlineSeverity = normalizeSeverityToString(ruleOptions[0]);
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const sameSeverity = existingSeverity === inlineSeverity;
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if (!sameSeverity) {
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return;
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}
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const alreadyConfigured = existingConfigRaw
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? `is already configured to '${existingSeverity}'`
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: "is not enabled so can't be turned off";
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let message;
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if (
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(existingConfig.length === 1 && ruleOptions.length === 1) ||
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existingSeverity === "off"
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) {
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message = `Unused inline config ('${ruleId}' ${alreadyConfigured}).`;
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} else if (
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!containsDifferentProperty(
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ruleOptions.slice(1),
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existingConfig.slice(1),
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)
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) {
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message =
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ruleOptionsInline.length === 1
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? `Unused inline config ('${ruleId}' ${alreadyConfigured}).`
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: `Unused inline config ('${ruleId}' ${alreadyConfigured} with the same options).`;
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}
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if (message) {
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problems.push(
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createLintingProblem({
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ruleId: null,
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message,
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loc,
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language: config.language,
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severity: normalizeSeverityToNumber(severity),
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}),
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);
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}
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}
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/**
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* Creates a collection of disable directives from a comment
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* @param {Object} options to create disable directives
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* @param {("disable"|"enable"|"disable-line"|"disable-next-line")} options.type The type of directive comment
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|
* @param {string} options.value The value after the directive in the comment
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|
* comment specified no specific rules, so it applies to all rules (e.g. `eslint-disable`)
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* @param {string} options.justification The justification of the directive
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|
* @param {ASTNode|token} options.node The Comment node/token.
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* @param {function(string): {create: Function}} ruleMapper A map from rule IDs to defined rules
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* @param {Language} language The language to use to adjust the location information.
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* @param {SourceCode} sourceCode The SourceCode object to get comments from.
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* @returns {Object} Directives and problems from the comment
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*/
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function createDisableDirectives(
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{ type, value, justification, node },
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ruleMapper,
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language,
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sourceCode,
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) {
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const ruleIds = Object.keys(commentParser.parseListConfig(value));
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const directiveRules = ruleIds.length ? ruleIds : [null];
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const result = {
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directives: [], // valid disable directives
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directiveProblems: [], // problems in directives
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};
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const parentDirective = { node, value, ruleIds };
|
|
|
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for (const ruleId of directiveRules) {
|
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const loc = sourceCode.getLoc(node);
|
|
|
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// push to directives, if the rule is defined(including null, e.g. /*eslint enable*/)
|
|
if (ruleId === null || !!ruleMapper(ruleId)) {
|
|
if (type === "disable-next-line") {
|
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const { line, column } = updateLocationInformation(
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loc.end,
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language,
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);
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result.directives.push({
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parentDirective,
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type,
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line,
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column,
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ruleId,
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justification,
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});
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} else {
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const { line, column } = updateLocationInformation(
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loc.start,
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language,
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);
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result.directives.push({
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parentDirective,
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type,
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line,
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column,
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ruleId,
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justification,
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});
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}
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} else {
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result.directiveProblems.push(
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createLintingProblem({ ruleId, loc, language }),
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);
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}
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}
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return result;
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}
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|
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/**
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|
* Parses comments in file to extract file-specific config of rules, globals
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|
* and environments and merges them with global config; also code blocks
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|
* where reporting is disabled or enabled and merges them with reporting config.
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|
* @param {SourceCode} sourceCode The SourceCode object to get comments from.
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|
* @param {function(string): {create: Function}} ruleMapper A map from rule IDs to defined rules
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|
* @param {string|null} warnInlineConfig If a string then it should warn directive comments as disabled. The string value is the config name what the setting came from.
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|
* @param {ConfigData} config Provided config.
|
|
* @returns {{configuredRules: Object, enabledGlobals: {value:string,comment:Token}[], exportedVariables: Object, problems: LintMessage[], disableDirectives: DisableDirective[]}}
|
|
* A collection of the directive comments that were found, along with any problems that occurred when parsing
|
|
*/
|
|
function getDirectiveComments(
|
|
sourceCode,
|
|
ruleMapper,
|
|
warnInlineConfig,
|
|
config,
|
|
) {
|
|
const configuredRules = {};
|
|
const enabledGlobals = Object.create(null);
|
|
const exportedVariables = {};
|
|
const problems = [];
|
|
const disableDirectives = [];
|
|
const validator = new ConfigValidator({
|
|
builtInRules: Rules,
|
|
});
|
|
|
|
sourceCode
|
|
.getInlineConfigNodes()
|
|
.filter(token => token.type !== "Shebang")
|
|
.forEach(comment => {
|
|
const directive = commentParser.parseDirective(comment.value);
|
|
|
|
if (!directive) {
|
|
return;
|
|
}
|
|
|
|
const {
|
|
label,
|
|
value,
|
|
justification: justificationPart,
|
|
} = directive;
|
|
|
|
const lineCommentSupported = /^eslint-disable-(next-)?line$/u.test(
|
|
label,
|
|
);
|
|
|
|
if (comment.type === "Line" && !lineCommentSupported) {
|
|
return;
|
|
}
|
|
|
|
const loc = sourceCode.getLoc(comment);
|
|
|
|
if (warnInlineConfig) {
|
|
const kind =
|
|
comment.type === "Block" ? `/*${label}*/` : `//${label}`;
|
|
|
|
problems.push(
|
|
createLintingProblem({
|
|
ruleId: null,
|
|
message: `'${kind}' has no effect because you have 'noInlineConfig' setting in ${warnInlineConfig}.`,
|
|
loc,
|
|
severity: 1,
|
|
}),
|
|
);
|
|
return;
|
|
}
|
|
|
|
if (
|
|
label === "eslint-disable-line" &&
|
|
loc.start.line !== loc.end.line
|
|
) {
|
|
const message = `${label} comment should not span multiple lines.`;
|
|
|
|
problems.push(
|
|
createLintingProblem({
|
|
ruleId: null,
|
|
message,
|
|
loc,
|
|
}),
|
|
);
|
|
return;
|
|
}
|
|
|
|
switch (label) {
|
|
case "eslint-disable":
|
|
case "eslint-enable":
|
|
case "eslint-disable-next-line":
|
|
case "eslint-disable-line": {
|
|
const directiveType = label.slice("eslint-".length);
|
|
const { directives, directiveProblems } =
|
|
createDisableDirectives(
|
|
{
|
|
type: directiveType,
|
|
value,
|
|
justification: justificationPart,
|
|
node: comment,
|
|
},
|
|
ruleMapper,
|
|
jslang,
|
|
sourceCode,
|
|
);
|
|
|
|
disableDirectives.push(...directives);
|
|
problems.push(...directiveProblems);
|
|
break;
|
|
}
|
|
|
|
case "exported":
|
|
Object.assign(
|
|
exportedVariables,
|
|
commentParser.parseListConfig(value),
|
|
);
|
|
break;
|
|
|
|
case "globals":
|
|
case "global":
|
|
for (const [id, idSetting] of Object.entries(
|
|
commentParser.parseStringConfig(value),
|
|
)) {
|
|
let normalizedValue;
|
|
|
|
try {
|
|
normalizedValue =
|
|
ConfigOps.normalizeConfigGlobal(idSetting);
|
|
} catch (err) {
|
|
problems.push(
|
|
createLintingProblem({
|
|
ruleId: null,
|
|
loc,
|
|
message: err.message,
|
|
}),
|
|
);
|
|
continue;
|
|
}
|
|
|
|
if (enabledGlobals[id]) {
|
|
enabledGlobals[id].comments.push(comment);
|
|
enabledGlobals[id].value = normalizedValue;
|
|
} else {
|
|
enabledGlobals[id] = {
|
|
comments: [comment],
|
|
value: normalizedValue,
|
|
};
|
|
}
|
|
}
|
|
break;
|
|
|
|
case "eslint": {
|
|
const parseResult =
|
|
commentParser.parseJSONLikeConfig(value);
|
|
|
|
if (parseResult.ok) {
|
|
Object.keys(parseResult.config).forEach(name => {
|
|
const rule = ruleMapper(name);
|
|
const ruleValue = parseResult.config[name];
|
|
|
|
if (!rule) {
|
|
problems.push(
|
|
createLintingProblem({ ruleId: name, loc }),
|
|
);
|
|
return;
|
|
}
|
|
|
|
if (Object.hasOwn(configuredRules, name)) {
|
|
problems.push(
|
|
createLintingProblem({
|
|
message: `Rule "${name}" is already configured by another configuration comment in the preceding code. This configuration is ignored.`,
|
|
loc,
|
|
}),
|
|
);
|
|
return;
|
|
}
|
|
|
|
let ruleOptions = asArray(ruleValue);
|
|
|
|
/*
|
|
* If the rule was already configured, inline rule configuration that
|
|
* only has severity should retain options from the config and just override the severity.
|
|
*
|
|
* Example:
|
|
*
|
|
* {
|
|
* rules: {
|
|
* curly: ["error", "multi"]
|
|
* }
|
|
* }
|
|
*
|
|
* /* eslint curly: ["warn"] * /
|
|
*
|
|
* Results in:
|
|
*
|
|
* curly: ["warn", "multi"]
|
|
*/
|
|
if (
|
|
/*
|
|
* If inline config for the rule has only severity
|
|
*/
|
|
ruleOptions.length === 1 &&
|
|
/*
|
|
* And the rule was already configured
|
|
*/
|
|
config.rules &&
|
|
Object.hasOwn(config.rules, name)
|
|
) {
|
|
/*
|
|
* Then use severity from the inline config and options from the provided config
|
|
*/
|
|
ruleOptions = [
|
|
ruleOptions[0], // severity from the inline config
|
|
...asArray(config.rules[name]).slice(1), // options from the provided config
|
|
];
|
|
}
|
|
|
|
try {
|
|
validator.validateRuleOptions(
|
|
rule,
|
|
name,
|
|
ruleOptions,
|
|
);
|
|
} catch (err) {
|
|
/*
|
|
* If the rule has invalid `meta.schema`, throw the error because
|
|
* this is not an invalid inline configuration but an invalid rule.
|
|
*/
|
|
if (
|
|
err.code ===
|
|
"ESLINT_INVALID_RULE_OPTIONS_SCHEMA"
|
|
) {
|
|
throw err;
|
|
}
|
|
|
|
problems.push(
|
|
createLintingProblem({
|
|
ruleId: name,
|
|
message: err.message,
|
|
loc,
|
|
}),
|
|
);
|
|
|
|
// do not apply the config, if found invalid options.
|
|
return;
|
|
}
|
|
|
|
configuredRules[name] = ruleOptions;
|
|
});
|
|
} else {
|
|
const problem = createLintingProblem({
|
|
ruleId: null,
|
|
loc,
|
|
message: parseResult.error.message,
|
|
});
|
|
|
|
problem.fatal = true;
|
|
problems.push(problem);
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
// no default
|
|
}
|
|
});
|
|
|
|
return {
|
|
configuredRules,
|
|
enabledGlobals,
|
|
exportedVariables,
|
|
problems,
|
|
disableDirectives,
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Parses comments in file to extract disable directives.
|
|
* @param {SourceCode} sourceCode The SourceCode object to get comments from.
|
|
* @param {function(string): {create: Function}} ruleMapper A map from rule IDs to defined rules
|
|
* @param {Language} language The language to use to adjust the location information
|
|
* @returns {{problems: LintMessage[], disableDirectives: DisableDirective[]}}
|
|
* A collection of the directive comments that were found, along with any problems that occurred when parsing
|
|
*/
|
|
function getDirectiveCommentsForFlatConfig(sourceCode, ruleMapper, language) {
|
|
const disableDirectives = [];
|
|
const problems = [];
|
|
|
|
if (sourceCode.getDisableDirectives) {
|
|
const { directives: directivesSources, problems: directivesProblems } =
|
|
sourceCode.getDisableDirectives();
|
|
|
|
problems.push(
|
|
...directivesProblems.map(directiveProblem =>
|
|
createLintingProblem({
|
|
...directiveProblem,
|
|
language,
|
|
}),
|
|
),
|
|
);
|
|
|
|
directivesSources.forEach(directive => {
|
|
const { directives, directiveProblems } = createDisableDirectives(
|
|
directive,
|
|
ruleMapper,
|
|
language,
|
|
sourceCode,
|
|
);
|
|
|
|
disableDirectives.push(...directives);
|
|
problems.push(...directiveProblems);
|
|
});
|
|
}
|
|
|
|
return {
|
|
problems,
|
|
disableDirectives,
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Normalize ECMAScript version from the initial config
|
|
* @param {Parser} parser The parser which uses this options.
|
|
* @param {number} ecmaVersion ECMAScript version from the initial config
|
|
* @returns {number} normalized ECMAScript version
|
|
*/
|
|
function normalizeEcmaVersion(parser, ecmaVersion) {
|
|
if (isEspree(parser)) {
|
|
if (ecmaVersion === "latest") {
|
|
return espree.latestEcmaVersion;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Calculate ECMAScript edition number from official year version starting with
|
|
* ES2015, which corresponds with ES6 (or a difference of 2009).
|
|
*/
|
|
return ecmaVersion >= 2015 ? ecmaVersion - 2009 : ecmaVersion;
|
|
}
|
|
|
|
/**
|
|
* Normalize ECMAScript version from the initial config into languageOptions (year)
|
|
* format.
|
|
* @param {any} [ecmaVersion] ECMAScript version from the initial config
|
|
* @returns {number} normalized ECMAScript version
|
|
*/
|
|
function normalizeEcmaVersionForLanguageOptions(ecmaVersion) {
|
|
switch (ecmaVersion) {
|
|
case 3:
|
|
return 3;
|
|
|
|
// void 0 = no ecmaVersion specified so use the default
|
|
case 5:
|
|
case void 0:
|
|
return 5;
|
|
|
|
default:
|
|
if (typeof ecmaVersion === "number") {
|
|
return ecmaVersion >= 2015 ? ecmaVersion : ecmaVersion + 2009;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* We default to the latest supported ecmaVersion for everything else.
|
|
* Remember, this is for languageOptions.ecmaVersion, which sets the version
|
|
* that is used for a number of processes inside of ESLint. It's normally
|
|
* safe to assume people want the latest unless otherwise specified.
|
|
*/
|
|
return LATEST_ECMA_VERSION;
|
|
}
|
|
|
|
const eslintEnvPattern = /\/\*\s*eslint-env\s(.+?)(?:\*\/|$)/gsu;
|
|
|
|
/**
|
|
* Checks whether or not there is a comment which has "eslint-env *" in a given text.
|
|
* @param {string} text A source code text to check.
|
|
* @returns {Object|null} A result of parseListConfig() with "eslint-env *" comment.
|
|
*/
|
|
function findEslintEnv(text) {
|
|
let match, retv;
|
|
|
|
eslintEnvPattern.lastIndex = 0;
|
|
|
|
while ((match = eslintEnvPattern.exec(text)) !== null) {
|
|
if (match[0].endsWith("*/")) {
|
|
retv = Object.assign(
|
|
retv || {},
|
|
commentParser.parseListConfig(
|
|
commentParser.parseDirective(match[0].slice(2, -2)).value,
|
|
),
|
|
);
|
|
}
|
|
}
|
|
|
|
return retv;
|
|
}
|
|
|
|
/**
|
|
* Convert "/path/to/<text>" to "<text>".
|
|
* `CLIEngine#executeOnText()` method gives "/path/to/<text>" if the filename
|
|
* was omitted because `configArray.extractConfig()` requires an absolute path.
|
|
* But the linter should pass `<text>` to `RuleContext#filename` in that
|
|
* case.
|
|
* Also, code blocks can have their virtual filename. If the parent filename was
|
|
* `<text>`, the virtual filename is `<text>/0_foo.js` or something like (i.e.,
|
|
* it's not an absolute path).
|
|
* @param {string} filename The filename to normalize.
|
|
* @returns {string} The normalized filename.
|
|
*/
|
|
function normalizeFilename(filename) {
|
|
const parts = filename.split(path.sep);
|
|
const index = parts.lastIndexOf("<text>");
|
|
|
|
return index === -1 ? filename : parts.slice(index).join(path.sep);
|
|
}
|
|
|
|
/**
|
|
* Normalizes the possible options for `linter.verify` and `linter.verifyAndFix` to a
|
|
* consistent shape.
|
|
* @param {VerifyOptions} providedOptions Options
|
|
* @param {ConfigData} config Config.
|
|
* @returns {Required<VerifyOptions> & InternalOptions} Normalized options
|
|
*/
|
|
function normalizeVerifyOptions(providedOptions, config) {
|
|
const linterOptions = config.linterOptions || config;
|
|
|
|
// .noInlineConfig for eslintrc, .linterOptions.noInlineConfig for flat
|
|
const disableInlineConfig = linterOptions.noInlineConfig === true;
|
|
const ignoreInlineConfig = providedOptions.allowInlineConfig === false;
|
|
const configNameOfNoInlineConfig = config.configNameOfNoInlineConfig
|
|
? ` (${config.configNameOfNoInlineConfig})`
|
|
: "";
|
|
|
|
let reportUnusedDisableDirectives =
|
|
providedOptions.reportUnusedDisableDirectives;
|
|
|
|
if (typeof reportUnusedDisableDirectives === "boolean") {
|
|
reportUnusedDisableDirectives = reportUnusedDisableDirectives
|
|
? "error"
|
|
: "off";
|
|
}
|
|
if (typeof reportUnusedDisableDirectives !== "string") {
|
|
if (typeof linterOptions.reportUnusedDisableDirectives === "boolean") {
|
|
reportUnusedDisableDirectives =
|
|
linterOptions.reportUnusedDisableDirectives ? "warn" : "off";
|
|
} else {
|
|
reportUnusedDisableDirectives =
|
|
linterOptions.reportUnusedDisableDirectives === void 0
|
|
? "off"
|
|
: normalizeSeverityToString(
|
|
linterOptions.reportUnusedDisableDirectives,
|
|
);
|
|
}
|
|
}
|
|
|
|
const reportUnusedInlineConfigs =
|
|
linterOptions.reportUnusedInlineConfigs === void 0
|
|
? "off"
|
|
: normalizeSeverityToString(
|
|
linterOptions.reportUnusedInlineConfigs,
|
|
);
|
|
|
|
let ruleFilter = providedOptions.ruleFilter;
|
|
|
|
if (typeof ruleFilter !== "function") {
|
|
ruleFilter = () => true;
|
|
}
|
|
|
|
return {
|
|
filename: normalizeFilename(providedOptions.filename || "<input>"),
|
|
allowInlineConfig: !ignoreInlineConfig,
|
|
warnInlineConfig:
|
|
disableInlineConfig && !ignoreInlineConfig
|
|
? `your config${configNameOfNoInlineConfig}`
|
|
: null,
|
|
reportUnusedDisableDirectives,
|
|
reportUnusedInlineConfigs,
|
|
disableFixes: Boolean(providedOptions.disableFixes),
|
|
stats: providedOptions.stats,
|
|
ruleFilter,
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Combines the provided parserOptions with the options from environments
|
|
* @param {Parser} parser The parser which uses this options.
|
|
* @param {ParserOptions} providedOptions The provided 'parserOptions' key in a config
|
|
* @param {Environment[]} enabledEnvironments The environments enabled in configuration and with inline comments
|
|
* @returns {ParserOptions} Resulting parser options after merge
|
|
*/
|
|
function resolveParserOptions(parser, providedOptions, enabledEnvironments) {
|
|
const parserOptionsFromEnv = enabledEnvironments
|
|
.filter(env => env.parserOptions)
|
|
.reduce(
|
|
(parserOptions, env) => merge(parserOptions, env.parserOptions),
|
|
{},
|
|
);
|
|
const mergedParserOptions = merge(
|
|
parserOptionsFromEnv,
|
|
providedOptions || {},
|
|
);
|
|
const isModule = mergedParserOptions.sourceType === "module";
|
|
|
|
if (isModule) {
|
|
/*
|
|
* can't have global return inside of modules
|
|
* TODO: espree validate parserOptions.globalReturn when sourceType is setting to module.(@aladdin-add)
|
|
*/
|
|
mergedParserOptions.ecmaFeatures = Object.assign(
|
|
{},
|
|
mergedParserOptions.ecmaFeatures,
|
|
{ globalReturn: false },
|
|
);
|
|
}
|
|
|
|
mergedParserOptions.ecmaVersion = normalizeEcmaVersion(
|
|
parser,
|
|
mergedParserOptions.ecmaVersion,
|
|
);
|
|
|
|
return mergedParserOptions;
|
|
}
|
|
|
|
/**
|
|
* Converts parserOptions to languageOptions for backwards compatibility with eslintrc.
|
|
* @param {ConfigData} config Config object.
|
|
* @param {Object} config.globals Global variable definitions.
|
|
* @param {Parser} config.parser The parser to use.
|
|
* @param {ParserOptions} config.parserOptions The parserOptions to use.
|
|
* @returns {LanguageOptions} The languageOptions equivalent.
|
|
*/
|
|
function createLanguageOptions({
|
|
globals: configuredGlobals,
|
|
parser,
|
|
parserOptions,
|
|
}) {
|
|
const { ecmaVersion, sourceType } = parserOptions;
|
|
|
|
return {
|
|
globals: configuredGlobals,
|
|
ecmaVersion: normalizeEcmaVersionForLanguageOptions(ecmaVersion),
|
|
sourceType,
|
|
parser,
|
|
parserOptions,
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Combines the provided globals object with the globals from environments
|
|
* @param {Record<string, GlobalConf>} providedGlobals The 'globals' key in a config
|
|
* @param {Environment[]} enabledEnvironments The environments enabled in configuration and with inline comments
|
|
* @returns {Record<string, GlobalConf>} The resolved globals object
|
|
*/
|
|
function resolveGlobals(providedGlobals, enabledEnvironments) {
|
|
return Object.assign(
|
|
Object.create(null),
|
|
...enabledEnvironments
|
|
.filter(env => env.globals)
|
|
.map(env => env.globals),
|
|
providedGlobals,
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Store time measurements in map
|
|
* @param {number} time Time measurement
|
|
* @param {Object} timeOpts Options relating which time was measured
|
|
* @param {WeakMap<Linter, LinterInternalSlots>} slots Linter internal slots map
|
|
* @returns {void}
|
|
*/
|
|
function storeTime(time, timeOpts, slots) {
|
|
const { type, key } = timeOpts;
|
|
|
|
if (!slots.times) {
|
|
slots.times = { passes: [{}] };
|
|
}
|
|
|
|
const passIndex = slots.fixPasses;
|
|
|
|
if (passIndex > slots.times.passes.length - 1) {
|
|
slots.times.passes.push({});
|
|
}
|
|
|
|
if (key) {
|
|
slots.times.passes[passIndex][type] ??= {};
|
|
slots.times.passes[passIndex][type][key] ??= { total: 0 };
|
|
slots.times.passes[passIndex][type][key].total += time;
|
|
} else {
|
|
slots.times.passes[passIndex][type] ??= { total: 0 };
|
|
slots.times.passes[passIndex][type].total += time;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get the options for a rule (not including severity), if any
|
|
* @param {RuleConfig} ruleConfig rule configuration
|
|
* @param {Object|undefined} defaultOptions rule.meta.defaultOptions
|
|
* @returns {Array} of rule options, empty Array if none
|
|
*/
|
|
function getRuleOptions(ruleConfig, defaultOptions) {
|
|
if (Array.isArray(ruleConfig)) {
|
|
return deepMergeArrays(defaultOptions, ruleConfig.slice(1));
|
|
}
|
|
return defaultOptions ?? [];
|
|
}
|
|
|
|
/**
|
|
* Analyze scope of the given AST.
|
|
* @param {ASTNode} ast The `Program` node to analyze.
|
|
* @param {LanguageOptions} languageOptions The parser options.
|
|
* @param {Record<string, string[]>} visitorKeys The visitor keys.
|
|
* @returns {ScopeManager} The analysis result.
|
|
*/
|
|
function analyzeScope(ast, languageOptions, visitorKeys) {
|
|
const parserOptions = languageOptions.parserOptions;
|
|
const ecmaFeatures = parserOptions.ecmaFeatures || {};
|
|
const ecmaVersion = languageOptions.ecmaVersion || DEFAULT_ECMA_VERSION;
|
|
|
|
return eslintScope.analyze(ast, {
|
|
ignoreEval: true,
|
|
nodejsScope: ecmaFeatures.globalReturn,
|
|
impliedStrict: ecmaFeatures.impliedStrict,
|
|
ecmaVersion: typeof ecmaVersion === "number" ? ecmaVersion : 6,
|
|
sourceType: languageOptions.sourceType || "script",
|
|
childVisitorKeys: visitorKeys || evk.KEYS,
|
|
fallback: Traverser.getKeys,
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Runs a rule, and gets its listeners
|
|
* @param {Rule} rule A rule object
|
|
* @param {Context} ruleContext The context that should be passed to the rule
|
|
* @throws {TypeError} If `rule` is not an object with a `create` method
|
|
* @throws {any} Any error during the rule's `create`
|
|
* @returns {Object} A map of selector listeners provided by the rule
|
|
*/
|
|
function createRuleListeners(rule, ruleContext) {
|
|
if (
|
|
!rule ||
|
|
typeof rule !== "object" ||
|
|
typeof rule.create !== "function"
|
|
) {
|
|
throw new TypeError(
|
|
`Error while loading rule '${ruleContext.id}': Rule must be an object with a \`create\` method`,
|
|
);
|
|
}
|
|
|
|
try {
|
|
return rule.create(ruleContext);
|
|
} catch (ex) {
|
|
ex.message = `Error while loading rule '${ruleContext.id}': ${ex.message}`;
|
|
throw ex;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Runs the given rules on the given SourceCode object
|
|
* @param {SourceCode} sourceCode A SourceCode object for the given text
|
|
* @param {Object} configuredRules The rules configuration
|
|
* @param {function(string): Rule} ruleMapper A mapper function from rule names to rules
|
|
* @param {string | undefined} parserName The name of the parser in the config
|
|
* @param {Language} language The language object used for parsing.
|
|
* @param {LanguageOptions} languageOptions The options for parsing the code.
|
|
* @param {Object} settings The settings that were enabled in the config
|
|
* @param {string} filename The reported filename of the code
|
|
* @param {boolean} applyDefaultOptions If true, apply rules' meta.defaultOptions in computing their config options.
|
|
* @param {boolean} disableFixes If true, it doesn't make `fix` properties.
|
|
* @param {string | undefined} cwd cwd of the cli
|
|
* @param {string} physicalFilename The full path of the file on disk without any code block information
|
|
* @param {Function} ruleFilter A predicate function to filter which rules should be executed.
|
|
* @param {boolean} stats If true, stats are collected appended to the result
|
|
* @param {WeakMap<Linter, LinterInternalSlots>} slots InternalSlotsMap of linter
|
|
* @returns {LintMessage[]} An array of reported problems
|
|
* @throws {Error} If traversal into a node fails.
|
|
*/
|
|
function runRules(
|
|
sourceCode,
|
|
configuredRules,
|
|
ruleMapper,
|
|
parserName,
|
|
language,
|
|
languageOptions,
|
|
settings,
|
|
filename,
|
|
applyDefaultOptions,
|
|
disableFixes,
|
|
cwd,
|
|
physicalFilename,
|
|
ruleFilter,
|
|
stats,
|
|
slots,
|
|
) {
|
|
const emitter = createEmitter();
|
|
|
|
// must happen first to assign all node.parent properties
|
|
const eventQueue = sourceCode.traverse();
|
|
|
|
/*
|
|
* Create a frozen object with the ruleContext properties and methods that are shared by all rules.
|
|
* All rule contexts will inherit from this object. This avoids the performance penalty of copying all the
|
|
* properties once for each rule.
|
|
*/
|
|
const sharedTraversalContext = new FileContext({
|
|
cwd,
|
|
filename,
|
|
physicalFilename: physicalFilename || filename,
|
|
sourceCode,
|
|
parserOptions: {
|
|
...languageOptions.parserOptions,
|
|
},
|
|
parserPath: parserName,
|
|
languageOptions,
|
|
settings,
|
|
});
|
|
|
|
const lintingProblems = [];
|
|
|
|
Object.keys(configuredRules).forEach(ruleId => {
|
|
const severity = ConfigOps.getRuleSeverity(configuredRules[ruleId]);
|
|
|
|
// not load disabled rules
|
|
if (severity === 0) {
|
|
return;
|
|
}
|
|
|
|
if (ruleFilter && !ruleFilter({ ruleId, severity })) {
|
|
return;
|
|
}
|
|
|
|
const rule = ruleMapper(ruleId);
|
|
|
|
if (!rule) {
|
|
lintingProblems.push(createLintingProblem({ ruleId, language }));
|
|
return;
|
|
}
|
|
|
|
const messageIds = rule.meta && rule.meta.messages;
|
|
let reportTranslator = null;
|
|
const ruleContext = Object.freeze(
|
|
Object.assign(Object.create(sharedTraversalContext), {
|
|
id: ruleId,
|
|
options: getRuleOptions(
|
|
configuredRules[ruleId],
|
|
applyDefaultOptions ? rule.meta?.defaultOptions : void 0,
|
|
),
|
|
report(...args) {
|
|
/*
|
|
* Create a report translator lazily.
|
|
* In a vast majority of cases, any given rule reports zero errors on a given
|
|
* piece of code. Creating a translator lazily avoids the performance cost of
|
|
* creating a new translator function for each rule that usually doesn't get
|
|
* called.
|
|
*
|
|
* Using lazy report translators improves end-to-end performance by about 3%
|
|
* with Node 8.4.0.
|
|
*/
|
|
if (reportTranslator === null) {
|
|
reportTranslator = createReportTranslator({
|
|
ruleId,
|
|
severity,
|
|
sourceCode,
|
|
messageIds,
|
|
disableFixes,
|
|
language,
|
|
});
|
|
}
|
|
const problem = reportTranslator(...args);
|
|
|
|
if (problem.fix && !(rule.meta && rule.meta.fixable)) {
|
|
throw new Error(
|
|
'Fixable rules must set the `meta.fixable` property to "code" or "whitespace".',
|
|
);
|
|
}
|
|
if (
|
|
problem.suggestions &&
|
|
!(rule.meta && rule.meta.hasSuggestions === true)
|
|
) {
|
|
if (
|
|
rule.meta &&
|
|
rule.meta.docs &&
|
|
typeof rule.meta.docs.suggestion !== "undefined"
|
|
) {
|
|
// Encourage migration from the former property name.
|
|
throw new Error(
|
|
"Rules with suggestions must set the `meta.hasSuggestions` property to `true`. `meta.docs.suggestion` is ignored by ESLint.",
|
|
);
|
|
}
|
|
throw new Error(
|
|
"Rules with suggestions must set the `meta.hasSuggestions` property to `true`.",
|
|
);
|
|
}
|
|
lintingProblems.push(problem);
|
|
},
|
|
}),
|
|
);
|
|
|
|
const ruleListenersReturn =
|
|
timing.enabled || stats
|
|
? timing.time(
|
|
ruleId,
|
|
createRuleListeners,
|
|
stats,
|
|
)(rule, ruleContext)
|
|
: createRuleListeners(rule, ruleContext);
|
|
|
|
const ruleListeners = stats
|
|
? ruleListenersReturn.result
|
|
: ruleListenersReturn;
|
|
|
|
if (stats) {
|
|
storeTime(
|
|
ruleListenersReturn.tdiff,
|
|
{ type: "rules", key: ruleId },
|
|
slots,
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Include `ruleId` in error logs
|
|
* @param {Function} ruleListener A rule method that listens for a node.
|
|
* @returns {Function} ruleListener wrapped in error handler
|
|
*/
|
|
function addRuleErrorHandler(ruleListener) {
|
|
return function ruleErrorHandler(...listenerArgs) {
|
|
try {
|
|
const ruleListenerReturn = ruleListener(...listenerArgs);
|
|
|
|
const ruleListenerResult = stats
|
|
? ruleListenerReturn.result
|
|
: ruleListenerReturn;
|
|
|
|
if (stats) {
|
|
storeTime(
|
|
ruleListenerReturn.tdiff,
|
|
{ type: "rules", key: ruleId },
|
|
slots,
|
|
);
|
|
}
|
|
|
|
return ruleListenerResult;
|
|
} catch (e) {
|
|
e.ruleId = ruleId;
|
|
throw e;
|
|
}
|
|
};
|
|
}
|
|
|
|
if (typeof ruleListeners === "undefined" || ruleListeners === null) {
|
|
throw new Error(
|
|
`The create() function for rule '${ruleId}' did not return an object.`,
|
|
);
|
|
}
|
|
|
|
// add all the selectors from the rule as listeners
|
|
Object.keys(ruleListeners).forEach(selector => {
|
|
const ruleListener =
|
|
timing.enabled || stats
|
|
? timing.time(ruleId, ruleListeners[selector], stats)
|
|
: ruleListeners[selector];
|
|
|
|
emitter.on(selector, addRuleErrorHandler(ruleListener));
|
|
});
|
|
});
|
|
|
|
const eventGenerator = new NodeEventGenerator(emitter, {
|
|
visitorKeys: sourceCode.visitorKeys ?? language.visitorKeys,
|
|
fallback: Traverser.getKeys,
|
|
matchClass: language.matchesSelectorClass ?? (() => false),
|
|
nodeTypeKey: language.nodeTypeKey,
|
|
});
|
|
|
|
for (const step of eventQueue) {
|
|
switch (step.kind) {
|
|
case STEP_KIND_VISIT: {
|
|
try {
|
|
if (step.phase === 1) {
|
|
eventGenerator.enterNode(step.target);
|
|
} else {
|
|
eventGenerator.leaveNode(step.target);
|
|
}
|
|
} catch (err) {
|
|
err.currentNode = step.target;
|
|
throw err;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case STEP_KIND_CALL: {
|
|
emitter.emit(step.target, ...step.args);
|
|
break;
|
|
}
|
|
|
|
default:
|
|
throw new Error(
|
|
`Invalid traversal step found: "${step.type}".`,
|
|
);
|
|
}
|
|
}
|
|
|
|
return lintingProblems;
|
|
}
|
|
|
|
/**
|
|
* Ensure the source code to be a string.
|
|
* @param {string|SourceCode} textOrSourceCode The text or source code object.
|
|
* @returns {string} The source code text.
|
|
*/
|
|
function ensureText(textOrSourceCode) {
|
|
if (typeof textOrSourceCode === "object") {
|
|
const { hasBOM, text } = textOrSourceCode;
|
|
const bom = hasBOM ? "\uFEFF" : "";
|
|
|
|
return bom + text;
|
|
}
|
|
|
|
return String(textOrSourceCode);
|
|
}
|
|
|
|
/**
|
|
* Get an environment.
|
|
* @param {LinterInternalSlots} slots The internal slots of Linter.
|
|
* @param {string} envId The environment ID to get.
|
|
* @returns {Environment|null} The environment.
|
|
*/
|
|
function getEnv(slots, envId) {
|
|
return (
|
|
(slots.lastConfigArray &&
|
|
slots.lastConfigArray.pluginEnvironments.get(envId)) ||
|
|
BuiltInEnvironments.get(envId) ||
|
|
null
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Get a rule.
|
|
* @param {LinterInternalSlots} slots The internal slots of Linter.
|
|
* @param {string} ruleId The rule ID to get.
|
|
* @returns {Rule|null} The rule.
|
|
*/
|
|
function getRule(slots, ruleId) {
|
|
return (
|
|
(slots.lastConfigArray &&
|
|
slots.lastConfigArray.pluginRules.get(ruleId)) ||
|
|
slots.ruleMap.get(ruleId)
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Normalize the value of the cwd
|
|
* @param {string | undefined} cwd raw value of the cwd, path to a directory that should be considered as the current working directory, can be undefined.
|
|
* @returns {string | undefined} normalized cwd
|
|
*/
|
|
function normalizeCwd(cwd) {
|
|
if (cwd) {
|
|
return cwd;
|
|
}
|
|
if (typeof process === "object") {
|
|
return process.cwd();
|
|
}
|
|
|
|
// It's more explicit to assign the undefined
|
|
// eslint-disable-next-line no-undefined -- Consistently returning a value
|
|
return undefined;
|
|
}
|
|
|
|
/**
|
|
* The map to store private data.
|
|
* @type {WeakMap<Linter, LinterInternalSlots>}
|
|
*/
|
|
const internalSlotsMap = new WeakMap();
|
|
|
|
/**
|
|
* Throws an error when the given linter is in flat config mode.
|
|
* @param {Linter} linter The linter to check.
|
|
* @returns {void}
|
|
* @throws {Error} If the linter is in flat config mode.
|
|
*/
|
|
function assertEslintrcConfig(linter) {
|
|
const { configType } = internalSlotsMap.get(linter);
|
|
|
|
if (configType === "flat") {
|
|
throw new Error(
|
|
"This method cannot be used with flat config. Add your entries directly into the config array.",
|
|
);
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Public Interface
|
|
//------------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Object that is responsible for verifying JavaScript text
|
|
* @name Linter
|
|
*/
|
|
class Linter {
|
|
/**
|
|
* Initialize the Linter.
|
|
* @param {Object} [config] the config object
|
|
* @param {string} [config.cwd] path to a directory that should be considered as the current working directory, can be undefined.
|
|
* @param {Array<string>} [config.flags] the feature flags to enable.
|
|
* @param {"flat"|"eslintrc"} [config.configType="flat"] the type of config used.
|
|
*/
|
|
constructor({ cwd, configType = "flat", flags = [] } = {}) {
|
|
const processedFlags = [];
|
|
|
|
flags.forEach(flag => {
|
|
if (inactiveFlags.has(flag)) {
|
|
const inactiveFlagData = inactiveFlags.get(flag);
|
|
const inactivityReason =
|
|
getInactivityReasonMessage(inactiveFlagData);
|
|
|
|
if (typeof inactiveFlagData.replacedBy === "undefined") {
|
|
throw new Error(
|
|
`The flag '${flag}' is inactive: ${inactivityReason}`,
|
|
);
|
|
}
|
|
|
|
// if there's a replacement, enable it instead of original
|
|
if (typeof inactiveFlagData.replacedBy === "string") {
|
|
processedFlags.push(inactiveFlagData.replacedBy);
|
|
}
|
|
|
|
globalThis.process?.emitWarning?.(
|
|
`The flag '${flag}' is inactive: ${inactivityReason}`,
|
|
`ESLintInactiveFlag_${flag}`,
|
|
);
|
|
|
|
return;
|
|
}
|
|
|
|
if (!activeFlags.has(flag)) {
|
|
throw new Error(`Unknown flag '${flag}'.`);
|
|
}
|
|
|
|
processedFlags.push(flag);
|
|
});
|
|
|
|
internalSlotsMap.set(this, {
|
|
cwd: normalizeCwd(cwd),
|
|
flags: processedFlags,
|
|
lastConfigArray: null,
|
|
lastSourceCode: null,
|
|
lastSuppressedMessages: [],
|
|
configType, // TODO: Remove after flat config conversion
|
|
parserMap: new Map([["espree", espree]]),
|
|
ruleMap: new Rules(),
|
|
});
|
|
|
|
this.version = pkg.version;
|
|
}
|
|
|
|
/**
|
|
* Getter for package version.
|
|
* @static
|
|
* @returns {string} The version from package.json.
|
|
*/
|
|
static get version() {
|
|
return pkg.version;
|
|
}
|
|
|
|
/**
|
|
* Indicates if the given feature flag is enabled for this instance.
|
|
* @param {string} flag The feature flag to check.
|
|
* @returns {boolean} `true` if the feature flag is enabled, `false` if not.
|
|
*/
|
|
hasFlag(flag) {
|
|
return internalSlotsMap.get(this).flags.includes(flag);
|
|
}
|
|
|
|
/**
|
|
* Lint using eslintrc and without processors.
|
|
* @param {VFile} file The file to lint.
|
|
* @param {ConfigData} providedConfig An ESLintConfig instance to configure everything.
|
|
* @param {VerifyOptions} [providedOptions] The optional filename of the file being checked.
|
|
* @throws {Error} If during rule execution.
|
|
* @returns {(LintMessage|SuppressedLintMessage)[]} The results as an array of messages or an empty array if no messages.
|
|
*/
|
|
#eslintrcVerifyWithoutProcessors(file, providedConfig, providedOptions) {
|
|
const slots = internalSlotsMap.get(this);
|
|
const config = providedConfig || {};
|
|
const options = normalizeVerifyOptions(providedOptions, config);
|
|
|
|
// Resolve parser.
|
|
let parserName = DEFAULT_PARSER_NAME;
|
|
let parser = espree;
|
|
|
|
if (typeof config.parser === "object" && config.parser !== null) {
|
|
parserName = config.parser.filePath;
|
|
parser = config.parser.definition;
|
|
} else if (typeof config.parser === "string") {
|
|
if (!slots.parserMap.has(config.parser)) {
|
|
return [
|
|
{
|
|
ruleId: null,
|
|
fatal: true,
|
|
severity: 2,
|
|
message: `Configured parser '${config.parser}' was not found.`,
|
|
line: 0,
|
|
column: 0,
|
|
nodeType: null,
|
|
},
|
|
];
|
|
}
|
|
parserName = config.parser;
|
|
parser = slots.parserMap.get(config.parser);
|
|
}
|
|
|
|
// search and apply "eslint-env *".
|
|
const envInFile =
|
|
options.allowInlineConfig && !options.warnInlineConfig
|
|
? findEslintEnv(file.body)
|
|
: {};
|
|
const resolvedEnvConfig = Object.assign(
|
|
{ builtin: true },
|
|
config.env,
|
|
envInFile,
|
|
);
|
|
const enabledEnvs = Object.keys(resolvedEnvConfig)
|
|
.filter(envName => resolvedEnvConfig[envName])
|
|
.map(envName => getEnv(slots, envName))
|
|
.filter(env => env);
|
|
|
|
const parserOptions = resolveParserOptions(
|
|
parser,
|
|
config.parserOptions || {},
|
|
enabledEnvs,
|
|
);
|
|
const configuredGlobals = resolveGlobals(
|
|
config.globals || {},
|
|
enabledEnvs,
|
|
);
|
|
const settings = config.settings || {};
|
|
const languageOptions = createLanguageOptions({
|
|
globals: config.globals,
|
|
parser,
|
|
parserOptions,
|
|
});
|
|
|
|
if (!slots.lastSourceCode) {
|
|
let t;
|
|
|
|
if (options.stats) {
|
|
t = startTime();
|
|
}
|
|
|
|
const parserService = new ParserService();
|
|
const parseResult = parserService.parseSync(file, {
|
|
language: jslang,
|
|
languageOptions,
|
|
});
|
|
|
|
if (options.stats) {
|
|
const time = endTime(t);
|
|
const timeOpts = { type: "parse" };
|
|
|
|
storeTime(time, timeOpts, slots);
|
|
}
|
|
|
|
if (!parseResult.ok) {
|
|
return parseResult.errors;
|
|
}
|
|
|
|
slots.lastSourceCode = parseResult.sourceCode;
|
|
} else {
|
|
/*
|
|
* If the given source code object as the first argument does not have scopeManager, analyze the scope.
|
|
* This is for backward compatibility (SourceCode is frozen so it cannot rebind).
|
|
*/
|
|
if (!slots.lastSourceCode.scopeManager) {
|
|
slots.lastSourceCode = new SourceCode({
|
|
text: slots.lastSourceCode.text,
|
|
ast: slots.lastSourceCode.ast,
|
|
hasBOM: slots.lastSourceCode.hasBOM,
|
|
parserServices: slots.lastSourceCode.parserServices,
|
|
visitorKeys: slots.lastSourceCode.visitorKeys,
|
|
scopeManager: analyzeScope(
|
|
slots.lastSourceCode.ast,
|
|
languageOptions,
|
|
),
|
|
});
|
|
}
|
|
}
|
|
|
|
const sourceCode = slots.lastSourceCode;
|
|
const commentDirectives = options.allowInlineConfig
|
|
? getDirectiveComments(
|
|
sourceCode,
|
|
ruleId => getRule(slots, ruleId),
|
|
options.warnInlineConfig,
|
|
config,
|
|
)
|
|
: {
|
|
configuredRules: {},
|
|
enabledGlobals: {},
|
|
exportedVariables: {},
|
|
problems: [],
|
|
disableDirectives: [],
|
|
};
|
|
|
|
addDeclaredGlobals(
|
|
sourceCode.scopeManager.scopes[0],
|
|
configuredGlobals,
|
|
{
|
|
exportedVariables: commentDirectives.exportedVariables,
|
|
enabledGlobals: commentDirectives.enabledGlobals,
|
|
},
|
|
);
|
|
|
|
const configuredRules = Object.assign(
|
|
{},
|
|
config.rules,
|
|
commentDirectives.configuredRules,
|
|
);
|
|
|
|
let lintingProblems;
|
|
|
|
try {
|
|
lintingProblems = runRules(
|
|
sourceCode,
|
|
configuredRules,
|
|
ruleId => getRule(slots, ruleId),
|
|
parserName,
|
|
jslang,
|
|
languageOptions,
|
|
settings,
|
|
options.filename,
|
|
true,
|
|
options.disableFixes,
|
|
slots.cwd,
|
|
providedOptions.physicalFilename,
|
|
null,
|
|
options.stats,
|
|
slots,
|
|
);
|
|
} catch (err) {
|
|
err.message += `\nOccurred while linting ${options.filename}`;
|
|
debug("An error occurred while traversing");
|
|
debug("Filename:", options.filename);
|
|
if (err.currentNode) {
|
|
const { line } = sourceCode.getLoc(err.currentNode).start;
|
|
|
|
debug("Line:", line);
|
|
err.message += `:${line}`;
|
|
}
|
|
debug("Parser Options:", parserOptions);
|
|
debug("Parser Path:", parserName);
|
|
debug("Settings:", settings);
|
|
|
|
if (err.ruleId) {
|
|
err.message += `\nRule: "${err.ruleId}"`;
|
|
}
|
|
|
|
throw err;
|
|
}
|
|
|
|
return applyDisableDirectives({
|
|
language: jslang,
|
|
sourceCode,
|
|
directives: commentDirectives.disableDirectives,
|
|
disableFixes: options.disableFixes,
|
|
problems: lintingProblems
|
|
.concat(commentDirectives.problems)
|
|
.sort(
|
|
(problemA, problemB) =>
|
|
problemA.line - problemB.line ||
|
|
problemA.column - problemB.column,
|
|
),
|
|
reportUnusedDisableDirectives:
|
|
options.reportUnusedDisableDirectives,
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Same as linter.verify, except without support for processors.
|
|
* @param {string|SourceCode} textOrSourceCode The text to parse or a SourceCode object.
|
|
* @param {ConfigData} providedConfig An ESLintConfig instance to configure everything.
|
|
* @param {VerifyOptions} [providedOptions] The optional filename of the file being checked.
|
|
* @throws {Error} If during rule execution.
|
|
* @returns {(LintMessage|SuppressedLintMessage)[]} The results as an array of messages or an empty array if no messages.
|
|
*/
|
|
_verifyWithoutProcessors(
|
|
textOrSourceCode,
|
|
providedConfig,
|
|
providedOptions,
|
|
) {
|
|
const slots = internalSlotsMap.get(this);
|
|
const filename = normalizeFilename(
|
|
providedOptions.filename || "<input>",
|
|
);
|
|
let text;
|
|
|
|
// evaluate arguments
|
|
if (typeof textOrSourceCode === "string") {
|
|
slots.lastSourceCode = null;
|
|
text = textOrSourceCode;
|
|
} else {
|
|
slots.lastSourceCode = textOrSourceCode;
|
|
text = textOrSourceCode.text;
|
|
}
|
|
|
|
const file = new VFile(filename, text, {
|
|
physicalPath: providedOptions.physicalFilename,
|
|
});
|
|
|
|
return this.#eslintrcVerifyWithoutProcessors(
|
|
file,
|
|
providedConfig,
|
|
providedOptions,
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Verifies the text against the rules specified by the second argument.
|
|
* @param {string|SourceCode} textOrSourceCode The text to parse or a SourceCode object.
|
|
* @param {ConfigData|ConfigArray} config An ESLintConfig instance to configure everything.
|
|
* @param {(string|(VerifyOptions&ProcessorOptions))} [filenameOrOptions] The optional filename of the file being checked.
|
|
* If this is not set, the filename will default to '<input>' in the rule context. If
|
|
* an object, then it has "filename", "allowInlineConfig", and some properties.
|
|
* @returns {LintMessage[]} The results as an array of messages or an empty array if no messages.
|
|
*/
|
|
verify(textOrSourceCode, config, filenameOrOptions) {
|
|
debug("Verify");
|
|
|
|
const { configType, cwd } = internalSlotsMap.get(this);
|
|
|
|
const options =
|
|
typeof filenameOrOptions === "string"
|
|
? { filename: filenameOrOptions }
|
|
: filenameOrOptions || {};
|
|
|
|
const configToUse = config ?? {};
|
|
|
|
if (configType !== "eslintrc") {
|
|
/*
|
|
* Because of how Webpack packages up the files, we can't
|
|
* compare directly to `FlatConfigArray` using `instanceof`
|
|
* because it's not the same `FlatConfigArray` as in the tests.
|
|
* So, we work around it by assuming an array is, in fact, a
|
|
* `FlatConfigArray` if it has a `getConfig()` method.
|
|
*/
|
|
let configArray = configToUse;
|
|
|
|
if (
|
|
!Array.isArray(configToUse) ||
|
|
typeof configToUse.getConfig !== "function"
|
|
) {
|
|
configArray = new FlatConfigArray(configToUse, {
|
|
basePath: cwd,
|
|
});
|
|
configArray.normalizeSync();
|
|
}
|
|
|
|
return this._distinguishSuppressedMessages(
|
|
this._verifyWithFlatConfigArray(
|
|
textOrSourceCode,
|
|
configArray,
|
|
options,
|
|
true,
|
|
),
|
|
);
|
|
}
|
|
|
|
if (typeof configToUse.extractConfig === "function") {
|
|
return this._distinguishSuppressedMessages(
|
|
this._verifyWithConfigArray(
|
|
textOrSourceCode,
|
|
configToUse,
|
|
options,
|
|
),
|
|
);
|
|
}
|
|
|
|
/*
|
|
* If we get to here, it means `config` is just an object rather
|
|
* than a config array so we can go right into linting.
|
|
*/
|
|
|
|
/*
|
|
* `Linter` doesn't support `overrides` property in configuration.
|
|
* So we cannot apply multiple processors.
|
|
*/
|
|
if (options.preprocess || options.postprocess) {
|
|
return this._distinguishSuppressedMessages(
|
|
this._verifyWithProcessor(
|
|
textOrSourceCode,
|
|
configToUse,
|
|
options,
|
|
),
|
|
);
|
|
}
|
|
return this._distinguishSuppressedMessages(
|
|
this._verifyWithoutProcessors(
|
|
textOrSourceCode,
|
|
configToUse,
|
|
options,
|
|
),
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Verify with a processor.
|
|
* @param {string|SourceCode} textOrSourceCode The source code.
|
|
* @param {FlatConfig} config The config array.
|
|
* @param {VerifyOptions&ProcessorOptions} options The options.
|
|
* @param {FlatConfigArray} [configForRecursive] The `ConfigArray` object to apply multiple processors recursively.
|
|
* @returns {(LintMessage|SuppressedLintMessage)[]} The found problems.
|
|
*/
|
|
_verifyWithFlatConfigArrayAndProcessor(
|
|
textOrSourceCode,
|
|
config,
|
|
options,
|
|
configForRecursive,
|
|
) {
|
|
const slots = internalSlotsMap.get(this);
|
|
const filename = options.filename || "<input>";
|
|
const filenameToExpose = normalizeFilename(filename);
|
|
const physicalFilename = options.physicalFilename || filenameToExpose;
|
|
const text = ensureText(textOrSourceCode);
|
|
const file = new VFile(filenameToExpose, text, {
|
|
physicalPath: physicalFilename,
|
|
});
|
|
|
|
const preprocess = options.preprocess || (rawText => [rawText]);
|
|
const postprocess =
|
|
options.postprocess || (messagesList => messagesList.flat());
|
|
|
|
const processorService = new ProcessorService();
|
|
const preprocessResult = processorService.preprocessSync(file, {
|
|
processor: {
|
|
preprocess,
|
|
postprocess,
|
|
},
|
|
});
|
|
|
|
if (!preprocessResult.ok) {
|
|
return preprocessResult.errors;
|
|
}
|
|
|
|
const filterCodeBlock =
|
|
options.filterCodeBlock ||
|
|
(blockFilename => blockFilename.endsWith(".js"));
|
|
const originalExtname = path.extname(filename);
|
|
const { files } = preprocessResult;
|
|
|
|
const messageLists = files.map(block => {
|
|
debug("A code block was found: %o", block.path || "(unnamed)");
|
|
|
|
// Keep the legacy behavior.
|
|
if (typeof block === "string") {
|
|
return this._verifyWithFlatConfigArrayAndWithoutProcessors(
|
|
block,
|
|
config,
|
|
options,
|
|
);
|
|
}
|
|
|
|
// Skip this block if filtered.
|
|
if (!filterCodeBlock(block.path, block.body)) {
|
|
debug("This code block was skipped.");
|
|
return [];
|
|
}
|
|
|
|
// Resolve configuration again if the file content or extension was changed.
|
|
if (
|
|
configForRecursive &&
|
|
(text !== block.rawBody ||
|
|
path.extname(block.path) !== originalExtname)
|
|
) {
|
|
debug(
|
|
"Resolving configuration again because the file content or extension was changed.",
|
|
);
|
|
return this._verifyWithFlatConfigArray(
|
|
block.rawBody,
|
|
configForRecursive,
|
|
{
|
|
...options,
|
|
filename: block.path,
|
|
physicalFilename: block.physicalPath,
|
|
},
|
|
);
|
|
}
|
|
|
|
slots.lastSourceCode = null;
|
|
|
|
// Does lint.
|
|
return this.#flatVerifyWithoutProcessors(block, config, {
|
|
...options,
|
|
filename: block.path,
|
|
physicalFilename: block.physicalPath,
|
|
});
|
|
});
|
|
|
|
return processorService.postprocessSync(file, messageLists, {
|
|
processor: {
|
|
preprocess,
|
|
postprocess,
|
|
},
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Verify using flat config and without any processors.
|
|
* @param {VFile} file The file to lint.
|
|
* @param {FlatConfig} providedConfig An ESLintConfig instance to configure everything.
|
|
* @param {VerifyOptions} [providedOptions] The optional filename of the file being checked.
|
|
* @throws {Error} If during rule execution.
|
|
* @returns {(LintMessage|SuppressedLintMessage)[]} The results as an array of messages or an empty array if no messages.
|
|
*/
|
|
#flatVerifyWithoutProcessors(file, providedConfig, providedOptions) {
|
|
const slots = internalSlotsMap.get(this);
|
|
const config = providedConfig || {};
|
|
const { settings = {}, languageOptions } = config;
|
|
const options = normalizeVerifyOptions(providedOptions, config);
|
|
|
|
if (!slots.lastSourceCode) {
|
|
let t;
|
|
|
|
if (options.stats) {
|
|
t = startTime();
|
|
}
|
|
|
|
const parserService = new ParserService();
|
|
const parseResult = parserService.parseSync(file, config);
|
|
|
|
if (options.stats) {
|
|
const time = endTime(t);
|
|
|
|
storeTime(time, { type: "parse" }, slots);
|
|
}
|
|
|
|
if (!parseResult.ok) {
|
|
return parseResult.errors;
|
|
}
|
|
|
|
slots.lastSourceCode = parseResult.sourceCode;
|
|
} else {
|
|
/*
|
|
* If the given source code object as the first argument does not have scopeManager, analyze the scope.
|
|
* This is for backward compatibility (SourceCode is frozen so it cannot rebind).
|
|
*
|
|
* We check explicitly for `null` to ensure that this is a JS-flavored language.
|
|
* For non-JS languages we don't want to do this.
|
|
*
|
|
* TODO: Remove this check when we stop exporting the `SourceCode` object.
|
|
*/
|
|
if (slots.lastSourceCode.scopeManager === null) {
|
|
slots.lastSourceCode = new SourceCode({
|
|
text: slots.lastSourceCode.text,
|
|
ast: slots.lastSourceCode.ast,
|
|
hasBOM: slots.lastSourceCode.hasBOM,
|
|
parserServices: slots.lastSourceCode.parserServices,
|
|
visitorKeys: slots.lastSourceCode.visitorKeys,
|
|
scopeManager: analyzeScope(
|
|
slots.lastSourceCode.ast,
|
|
languageOptions,
|
|
),
|
|
});
|
|
}
|
|
}
|
|
|
|
const sourceCode = slots.lastSourceCode;
|
|
|
|
/*
|
|
* Make adjustments based on the language options. For JavaScript,
|
|
* this is primarily about adding variables into the global scope
|
|
* to account for ecmaVersion and configured globals.
|
|
*/
|
|
sourceCode.applyLanguageOptions?.(languageOptions);
|
|
|
|
const mergedInlineConfig = {
|
|
rules: {},
|
|
};
|
|
const inlineConfigProblems = [];
|
|
|
|
/*
|
|
* Inline config can be either enabled or disabled. If disabled, it's possible
|
|
* to detect the inline config and emit a warning (though this is not required).
|
|
* So we first check to see if inline config is allowed at all, and if so, we
|
|
* need to check if it's a warning or not.
|
|
*/
|
|
if (options.allowInlineConfig) {
|
|
// if inline config should warn then add the warnings
|
|
if (options.warnInlineConfig) {
|
|
if (sourceCode.getInlineConfigNodes) {
|
|
sourceCode.getInlineConfigNodes().forEach(node => {
|
|
const loc = sourceCode.getLoc(node);
|
|
const range = sourceCode.getRange(node);
|
|
|
|
inlineConfigProblems.push(
|
|
createLintingProblem({
|
|
ruleId: null,
|
|
message: `'${sourceCode.text.slice(range[0], range[1])}' has no effect because you have 'noInlineConfig' setting in ${options.warnInlineConfig}.`,
|
|
loc,
|
|
severity: 1,
|
|
language: config.language,
|
|
}),
|
|
);
|
|
});
|
|
}
|
|
} else {
|
|
const inlineConfigResult = sourceCode.applyInlineConfig?.();
|
|
|
|
if (inlineConfigResult) {
|
|
inlineConfigProblems.push(
|
|
...inlineConfigResult.problems
|
|
.map(problem =>
|
|
createLintingProblem({
|
|
...problem,
|
|
language: config.language,
|
|
}),
|
|
)
|
|
.map(problem => {
|
|
problem.fatal = true;
|
|
return problem;
|
|
}),
|
|
);
|
|
|
|
// next we need to verify information about the specified rules
|
|
const ruleValidator = new RuleValidator();
|
|
|
|
for (const {
|
|
config: inlineConfig,
|
|
loc,
|
|
} of inlineConfigResult.configs) {
|
|
Object.keys(inlineConfig.rules).forEach(ruleId => {
|
|
const rule = getRuleFromConfig(ruleId, config);
|
|
const ruleValue = inlineConfig.rules[ruleId];
|
|
|
|
if (!rule) {
|
|
inlineConfigProblems.push(
|
|
createLintingProblem({
|
|
ruleId,
|
|
loc,
|
|
language: config.language,
|
|
}),
|
|
);
|
|
return;
|
|
}
|
|
|
|
if (
|
|
Object.hasOwn(mergedInlineConfig.rules, ruleId)
|
|
) {
|
|
inlineConfigProblems.push(
|
|
createLintingProblem({
|
|
message: `Rule "${ruleId}" is already configured by another configuration comment in the preceding code. This configuration is ignored.`,
|
|
loc,
|
|
language: config.language,
|
|
}),
|
|
);
|
|
return;
|
|
}
|
|
|
|
try {
|
|
const ruleOptionsInline = asArray(ruleValue);
|
|
let ruleOptions = ruleOptionsInline;
|
|
|
|
assertIsRuleSeverity(ruleId, ruleOptions[0]);
|
|
|
|
/*
|
|
* If the rule was already configured, inline rule configuration that
|
|
* only has severity should retain options from the config and just override the severity.
|
|
*
|
|
* Example:
|
|
*
|
|
* {
|
|
* rules: {
|
|
* curly: ["error", "multi"]
|
|
* }
|
|
* }
|
|
*
|
|
* /* eslint curly: ["warn"] * /
|
|
*
|
|
* Results in:
|
|
*
|
|
* curly: ["warn", "multi"]
|
|
*/
|
|
|
|
let shouldValidateOptions = true;
|
|
|
|
if (
|
|
/*
|
|
* If inline config for the rule has only severity
|
|
*/
|
|
ruleOptions.length === 1 &&
|
|
/*
|
|
* And the rule was already configured
|
|
*/
|
|
config.rules &&
|
|
Object.hasOwn(config.rules, ruleId)
|
|
) {
|
|
/*
|
|
* Then use severity from the inline config and options from the provided config
|
|
*/
|
|
ruleOptions = [
|
|
ruleOptions[0], // severity from the inline config
|
|
...config.rules[ruleId].slice(1), // options from the provided config
|
|
];
|
|
|
|
// if the rule was enabled, the options have already been validated
|
|
if (config.rules[ruleId][0] > 0) {
|
|
shouldValidateOptions = false;
|
|
}
|
|
} else {
|
|
/**
|
|
* Since we know the user provided options, apply defaults on top of them
|
|
*/
|
|
const slicedOptions = ruleOptions.slice(1);
|
|
const mergedOptions = deepMergeArrays(
|
|
rule.meta?.defaultOptions,
|
|
slicedOptions,
|
|
);
|
|
|
|
if (mergedOptions.length) {
|
|
ruleOptions = [
|
|
ruleOptions[0],
|
|
...mergedOptions,
|
|
];
|
|
}
|
|
}
|
|
|
|
if (
|
|
options.reportUnusedInlineConfigs !== "off"
|
|
) {
|
|
addProblemIfSameSeverityAndOptions(
|
|
config,
|
|
loc,
|
|
inlineConfigProblems,
|
|
ruleId,
|
|
ruleOptions,
|
|
ruleOptionsInline,
|
|
options.reportUnusedInlineConfigs,
|
|
);
|
|
}
|
|
|
|
if (shouldValidateOptions) {
|
|
ruleValidator.validate({
|
|
plugins: config.plugins,
|
|
rules: {
|
|
[ruleId]: ruleOptions,
|
|
},
|
|
});
|
|
}
|
|
|
|
mergedInlineConfig.rules[ruleId] = ruleOptions;
|
|
} catch (err) {
|
|
/*
|
|
* If the rule has invalid `meta.schema`, throw the error because
|
|
* this is not an invalid inline configuration but an invalid rule.
|
|
*/
|
|
if (
|
|
err.code ===
|
|
"ESLINT_INVALID_RULE_OPTIONS_SCHEMA"
|
|
) {
|
|
throw err;
|
|
}
|
|
|
|
let baseMessage = err.message
|
|
.slice(
|
|
err.message.startsWith('Key "rules":')
|
|
? err.message.indexOf(":", 12) + 1
|
|
: err.message.indexOf(":") + 1,
|
|
)
|
|
.trim();
|
|
|
|
if (err.messageTemplate) {
|
|
baseMessage += ` You passed "${ruleValue}".`;
|
|
}
|
|
|
|
inlineConfigProblems.push(
|
|
createLintingProblem({
|
|
ruleId,
|
|
message: `Inline configuration for rule "${ruleId}" is invalid:\n\t${baseMessage}\n`,
|
|
loc,
|
|
language: config.language,
|
|
}),
|
|
);
|
|
}
|
|
});
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
const commentDirectives =
|
|
options.allowInlineConfig && !options.warnInlineConfig
|
|
? getDirectiveCommentsForFlatConfig(
|
|
sourceCode,
|
|
ruleId => getRuleFromConfig(ruleId, config),
|
|
config.language,
|
|
)
|
|
: { problems: [], disableDirectives: [] };
|
|
|
|
const configuredRules = Object.assign(
|
|
{},
|
|
config.rules,
|
|
mergedInlineConfig.rules,
|
|
);
|
|
|
|
let lintingProblems;
|
|
|
|
sourceCode.finalize?.();
|
|
|
|
try {
|
|
lintingProblems = runRules(
|
|
sourceCode,
|
|
configuredRules,
|
|
ruleId => getRuleFromConfig(ruleId, config),
|
|
void 0,
|
|
config.language,
|
|
languageOptions,
|
|
settings,
|
|
options.filename,
|
|
false,
|
|
options.disableFixes,
|
|
slots.cwd,
|
|
providedOptions.physicalFilename,
|
|
options.ruleFilter,
|
|
options.stats,
|
|
slots,
|
|
);
|
|
} catch (err) {
|
|
err.message += `\nOccurred while linting ${options.filename}`;
|
|
debug("An error occurred while traversing");
|
|
debug("Filename:", options.filename);
|
|
if (err.currentNode) {
|
|
const { line } = sourceCode.getLoc(err.currentNode).start;
|
|
|
|
debug("Line:", line);
|
|
err.message += `:${line}`;
|
|
}
|
|
debug("Parser Options:", languageOptions.parserOptions);
|
|
|
|
// debug("Parser Path:", parserName);
|
|
debug("Settings:", settings);
|
|
|
|
if (err.ruleId) {
|
|
err.message += `\nRule: "${err.ruleId}"`;
|
|
}
|
|
|
|
throw err;
|
|
}
|
|
|
|
return applyDisableDirectives({
|
|
language: config.language,
|
|
sourceCode,
|
|
directives: commentDirectives.disableDirectives,
|
|
disableFixes: options.disableFixes,
|
|
problems: lintingProblems
|
|
.concat(commentDirectives.problems)
|
|
.concat(inlineConfigProblems)
|
|
.sort(
|
|
(problemA, problemB) =>
|
|
problemA.line - problemB.line ||
|
|
problemA.column - problemB.column,
|
|
),
|
|
reportUnusedDisableDirectives:
|
|
options.reportUnusedDisableDirectives,
|
|
ruleFilter: options.ruleFilter,
|
|
configuredRules,
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Same as linter.verify, except without support for processors.
|
|
* @param {string|SourceCode} textOrSourceCode The text to parse or a SourceCode object.
|
|
* @param {FlatConfig} providedConfig An ESLintConfig instance to configure everything.
|
|
* @param {VerifyOptions} [providedOptions] The optional filename of the file being checked.
|
|
* @throws {Error} If during rule execution.
|
|
* @returns {(LintMessage|SuppressedLintMessage)[]} The results as an array of messages or an empty array if no messages.
|
|
*/
|
|
_verifyWithFlatConfigArrayAndWithoutProcessors(
|
|
textOrSourceCode,
|
|
providedConfig,
|
|
providedOptions,
|
|
) {
|
|
const slots = internalSlotsMap.get(this);
|
|
const filename = normalizeFilename(
|
|
providedOptions.filename || "<input>",
|
|
);
|
|
let text;
|
|
|
|
// evaluate arguments
|
|
if (typeof textOrSourceCode === "string") {
|
|
slots.lastSourceCode = null;
|
|
text = textOrSourceCode;
|
|
} else {
|
|
slots.lastSourceCode = textOrSourceCode;
|
|
text = textOrSourceCode.text;
|
|
}
|
|
|
|
const file = new VFile(filename, text, {
|
|
physicalPath: providedOptions.physicalFilename,
|
|
});
|
|
|
|
return this.#flatVerifyWithoutProcessors(
|
|
file,
|
|
providedConfig,
|
|
providedOptions,
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Verify a given code with `ConfigArray`.
|
|
* @param {string|SourceCode} textOrSourceCode The source code.
|
|
* @param {ConfigArray} configArray The config array.
|
|
* @param {VerifyOptions&ProcessorOptions} options The options.
|
|
* @returns {(LintMessage|SuppressedLintMessage)[]} The found problems.
|
|
*/
|
|
_verifyWithConfigArray(textOrSourceCode, configArray, options) {
|
|
debug("With ConfigArray: %s", options.filename);
|
|
|
|
// Store the config array in order to get plugin envs and rules later.
|
|
internalSlotsMap.get(this).lastConfigArray = configArray;
|
|
|
|
// Extract the final config for this file.
|
|
const config = configArray.extractConfig(options.filename);
|
|
const processor =
|
|
config.processor &&
|
|
configArray.pluginProcessors.get(config.processor);
|
|
|
|
// Verify.
|
|
if (processor) {
|
|
debug("Apply the processor: %o", config.processor);
|
|
const { preprocess, postprocess, supportsAutofix } = processor;
|
|
const disableFixes = options.disableFixes || !supportsAutofix;
|
|
|
|
return this._verifyWithProcessor(
|
|
textOrSourceCode,
|
|
config,
|
|
{ ...options, disableFixes, postprocess, preprocess },
|
|
configArray,
|
|
);
|
|
}
|
|
return this._verifyWithoutProcessors(textOrSourceCode, config, options);
|
|
}
|
|
|
|
/**
|
|
* Verify a given code with a flat config.
|
|
* @param {string|SourceCode} textOrSourceCode The source code.
|
|
* @param {FlatConfigArray} configArray The config array.
|
|
* @param {VerifyOptions&ProcessorOptions} options The options.
|
|
* @param {boolean} [firstCall=false] Indicates if this is being called directly
|
|
* from verify(). (TODO: Remove once eslintrc is removed.)
|
|
* @returns {(LintMessage|SuppressedLintMessage)[]} The found problems.
|
|
*/
|
|
_verifyWithFlatConfigArray(
|
|
textOrSourceCode,
|
|
configArray,
|
|
options,
|
|
firstCall = false,
|
|
) {
|
|
debug("With flat config: %s", options.filename);
|
|
|
|
// we need a filename to match configs against
|
|
const filename = options.filename || "__placeholder__.js";
|
|
|
|
// Store the config array in order to get plugin envs and rules later.
|
|
internalSlotsMap.get(this).lastConfigArray = configArray;
|
|
const config = configArray.getConfig(filename);
|
|
|
|
if (!config) {
|
|
return [
|
|
{
|
|
ruleId: null,
|
|
severity: 1,
|
|
message: `No matching configuration found for ${filename}.`,
|
|
line: 0,
|
|
column: 0,
|
|
nodeType: null,
|
|
},
|
|
];
|
|
}
|
|
|
|
// Verify.
|
|
if (config.processor) {
|
|
debug("Apply the processor: %o", config.processor);
|
|
const { preprocess, postprocess, supportsAutofix } =
|
|
config.processor;
|
|
const disableFixes = options.disableFixes || !supportsAutofix;
|
|
|
|
return this._verifyWithFlatConfigArrayAndProcessor(
|
|
textOrSourceCode,
|
|
config,
|
|
{ ...options, filename, disableFixes, postprocess, preprocess },
|
|
configArray,
|
|
);
|
|
}
|
|
|
|
// check for options-based processing
|
|
if (firstCall && (options.preprocess || options.postprocess)) {
|
|
return this._verifyWithFlatConfigArrayAndProcessor(
|
|
textOrSourceCode,
|
|
config,
|
|
options,
|
|
);
|
|
}
|
|
|
|
return this._verifyWithFlatConfigArrayAndWithoutProcessors(
|
|
textOrSourceCode,
|
|
config,
|
|
options,
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Verify with a processor.
|
|
* @param {string|SourceCode} textOrSourceCode The source code.
|
|
* @param {ConfigData|ExtractedConfig} config The config array.
|
|
* @param {VerifyOptions&ProcessorOptions} options The options.
|
|
* @param {ConfigArray} [configForRecursive] The `ConfigArray` object to apply multiple processors recursively.
|
|
* @returns {(LintMessage|SuppressedLintMessage)[]} The found problems.
|
|
*/
|
|
_verifyWithProcessor(
|
|
textOrSourceCode,
|
|
config,
|
|
options,
|
|
configForRecursive,
|
|
) {
|
|
const slots = internalSlotsMap.get(this);
|
|
const filename = options.filename || "<input>";
|
|
const filenameToExpose = normalizeFilename(filename);
|
|
const physicalFilename = options.physicalFilename || filenameToExpose;
|
|
const text = ensureText(textOrSourceCode);
|
|
const file = new VFile(filenameToExpose, text, {
|
|
physicalPath: physicalFilename,
|
|
});
|
|
|
|
const preprocess = options.preprocess || (rawText => [rawText]);
|
|
const postprocess =
|
|
options.postprocess || (messagesList => messagesList.flat());
|
|
|
|
const processorService = new ProcessorService();
|
|
const preprocessResult = processorService.preprocessSync(file, {
|
|
processor: {
|
|
preprocess,
|
|
postprocess,
|
|
},
|
|
});
|
|
|
|
if (!preprocessResult.ok) {
|
|
return preprocessResult.errors;
|
|
}
|
|
|
|
const filterCodeBlock =
|
|
options.filterCodeBlock ||
|
|
(blockFilePath => blockFilePath.endsWith(".js"));
|
|
const originalExtname = path.extname(filename);
|
|
|
|
const { files } = preprocessResult;
|
|
|
|
const messageLists = files.map(block => {
|
|
debug("A code block was found: %o", block.path ?? "(unnamed)");
|
|
|
|
// Keep the legacy behavior.
|
|
if (typeof block === "string") {
|
|
return this._verifyWithoutProcessors(block, config, options);
|
|
}
|
|
|
|
// Skip this block if filtered.
|
|
if (!filterCodeBlock(block.path, block.body)) {
|
|
debug("This code block was skipped.");
|
|
return [];
|
|
}
|
|
|
|
// Resolve configuration again if the file content or extension was changed.
|
|
if (
|
|
configForRecursive &&
|
|
(text !== block.rawBody ||
|
|
path.extname(block.path) !== originalExtname)
|
|
) {
|
|
debug(
|
|
"Resolving configuration again because the file content or extension was changed.",
|
|
);
|
|
return this._verifyWithConfigArray(
|
|
block.rawBody,
|
|
configForRecursive,
|
|
{
|
|
...options,
|
|
filename: block.path,
|
|
physicalFilename: block.physicalPath,
|
|
},
|
|
);
|
|
}
|
|
|
|
slots.lastSourceCode = null;
|
|
|
|
// Does lint.
|
|
return this.#eslintrcVerifyWithoutProcessors(block, config, {
|
|
...options,
|
|
filename: block.path,
|
|
physicalFilename: block.physicalPath,
|
|
});
|
|
});
|
|
|
|
return processorService.postprocessSync(file, messageLists, {
|
|
processor: {
|
|
preprocess,
|
|
postprocess,
|
|
},
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Given a list of reported problems, distinguish problems between normal messages and suppressed messages.
|
|
* The normal messages will be returned and the suppressed messages will be stored as lastSuppressedMessages.
|
|
* @param {Array<LintMessage|SuppressedLintMessage>} problems A list of reported problems.
|
|
* @returns {LintMessage[]} A list of LintMessage.
|
|
*/
|
|
_distinguishSuppressedMessages(problems) {
|
|
const messages = [];
|
|
const suppressedMessages = [];
|
|
const slots = internalSlotsMap.get(this);
|
|
|
|
for (const problem of problems) {
|
|
if (problem.suppressions) {
|
|
suppressedMessages.push(problem);
|
|
} else {
|
|
messages.push(problem);
|
|
}
|
|
}
|
|
|
|
slots.lastSuppressedMessages = suppressedMessages;
|
|
|
|
return messages;
|
|
}
|
|
|
|
/**
|
|
* Gets the SourceCode object representing the parsed source.
|
|
* @returns {SourceCode} The SourceCode object.
|
|
*/
|
|
getSourceCode() {
|
|
return internalSlotsMap.get(this).lastSourceCode;
|
|
}
|
|
|
|
/**
|
|
* Gets the times spent on (parsing, fixing, linting) a file.
|
|
* @returns {LintTimes} The times.
|
|
*/
|
|
getTimes() {
|
|
return internalSlotsMap.get(this).times ?? { passes: [] };
|
|
}
|
|
|
|
/**
|
|
* Gets the number of autofix passes that were made in the last run.
|
|
* @returns {number} The number of autofix passes.
|
|
*/
|
|
getFixPassCount() {
|
|
return internalSlotsMap.get(this).fixPasses ?? 0;
|
|
}
|
|
|
|
/**
|
|
* Gets the list of SuppressedLintMessage produced in the last running.
|
|
* @returns {SuppressedLintMessage[]} The list of SuppressedLintMessage
|
|
*/
|
|
getSuppressedMessages() {
|
|
return internalSlotsMap.get(this).lastSuppressedMessages;
|
|
}
|
|
|
|
/**
|
|
* Defines a new linting rule.
|
|
* @param {string} ruleId A unique rule identifier
|
|
* @param {Rule} rule A rule object
|
|
* @returns {void}
|
|
*/
|
|
defineRule(ruleId, rule) {
|
|
assertEslintrcConfig(this);
|
|
internalSlotsMap.get(this).ruleMap.define(ruleId, rule);
|
|
}
|
|
|
|
/**
|
|
* Defines many new linting rules.
|
|
* @param {Record<string, Rule>} rulesToDefine map from unique rule identifier to rule
|
|
* @returns {void}
|
|
*/
|
|
defineRules(rulesToDefine) {
|
|
assertEslintrcConfig(this);
|
|
Object.getOwnPropertyNames(rulesToDefine).forEach(ruleId => {
|
|
this.defineRule(ruleId, rulesToDefine[ruleId]);
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Gets an object with all loaded rules.
|
|
* @returns {Map<string, Rule>} All loaded rules
|
|
*/
|
|
getRules() {
|
|
assertEslintrcConfig(this);
|
|
const { lastConfigArray, ruleMap } = internalSlotsMap.get(this);
|
|
|
|
return new Map(
|
|
(function* () {
|
|
yield* ruleMap;
|
|
|
|
if (lastConfigArray) {
|
|
yield* lastConfigArray.pluginRules;
|
|
}
|
|
})(),
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Define a new parser module
|
|
* @param {string} parserId Name of the parser
|
|
* @param {Parser} parserModule The parser object
|
|
* @returns {void}
|
|
*/
|
|
defineParser(parserId, parserModule) {
|
|
assertEslintrcConfig(this);
|
|
internalSlotsMap.get(this).parserMap.set(parserId, parserModule);
|
|
}
|
|
|
|
/**
|
|
* Performs multiple autofix passes over the text until as many fixes as possible
|
|
* have been applied.
|
|
* @param {string} text The source text to apply fixes to.
|
|
* @param {ConfigData|ConfigArray|FlatConfigArray} config The ESLint config object to use.
|
|
* @param {VerifyOptions&ProcessorOptions&FixOptions} options The ESLint options object to use.
|
|
* @returns {{fixed:boolean,messages:LintMessage[],output:string}} The result of the fix operation as returned from the
|
|
* SourceCodeFixer.
|
|
*/
|
|
verifyAndFix(text, config, options) {
|
|
let messages,
|
|
fixedResult,
|
|
fixed = false,
|
|
passNumber = 0,
|
|
currentText = text,
|
|
secondPreviousText,
|
|
previousText;
|
|
const debugTextDescription =
|
|
(options && options.filename) || `${text.slice(0, 10)}...`;
|
|
const shouldFix =
|
|
options && typeof options.fix !== "undefined" ? options.fix : true;
|
|
const stats = options?.stats;
|
|
|
|
/**
|
|
* This loop continues until one of the following is true:
|
|
*
|
|
* 1. No more fixes have been applied.
|
|
* 2. Ten passes have been made.
|
|
*
|
|
* That means anytime a fix is successfully applied, there will be another pass.
|
|
* Essentially, guaranteeing a minimum of two passes.
|
|
*/
|
|
const slots = internalSlotsMap.get(this);
|
|
|
|
// Remove lint times from the last run.
|
|
if (stats) {
|
|
delete slots.times;
|
|
slots.fixPasses = 0;
|
|
}
|
|
|
|
do {
|
|
passNumber++;
|
|
let tTotal;
|
|
|
|
if (stats) {
|
|
tTotal = startTime();
|
|
}
|
|
|
|
debug(
|
|
`Linting code for ${debugTextDescription} (pass ${passNumber})`,
|
|
);
|
|
messages = this.verify(currentText, config, options);
|
|
|
|
debug(
|
|
`Generating fixed text for ${debugTextDescription} (pass ${passNumber})`,
|
|
);
|
|
let t;
|
|
|
|
if (stats) {
|
|
t = startTime();
|
|
}
|
|
|
|
fixedResult = SourceCodeFixer.applyFixes(
|
|
currentText,
|
|
messages,
|
|
shouldFix,
|
|
);
|
|
|
|
if (stats) {
|
|
if (fixedResult.fixed) {
|
|
const time = endTime(t);
|
|
|
|
storeTime(time, { type: "fix" }, slots);
|
|
slots.fixPasses++;
|
|
} else {
|
|
storeTime(0, { type: "fix" }, slots);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* stop if there are any syntax errors.
|
|
* 'fixedResult.output' is a empty string.
|
|
*/
|
|
if (messages.length === 1 && messages[0].fatal) {
|
|
break;
|
|
}
|
|
|
|
// keep track if any fixes were ever applied - important for return value
|
|
fixed = fixed || fixedResult.fixed;
|
|
|
|
// update to use the fixed output instead of the original text
|
|
secondPreviousText = previousText;
|
|
previousText = currentText;
|
|
currentText = fixedResult.output;
|
|
|
|
if (stats) {
|
|
tTotal = endTime(tTotal);
|
|
const passIndex = slots.times.passes.length - 1;
|
|
|
|
slots.times.passes[passIndex].total = tTotal;
|
|
}
|
|
|
|
// Stop if we've made a circular fix
|
|
if (
|
|
passNumber > 1 &&
|
|
currentText.length === secondPreviousText.length &&
|
|
currentText === secondPreviousText
|
|
) {
|
|
debug(
|
|
`Circular fixes detected after pass ${passNumber}. Exiting fix loop.`,
|
|
);
|
|
globalThis?.process?.emitWarning?.(
|
|
`Circular fixes detected while fixing ${options?.filename ?? "text"}. It is likely that you have conflicting rules in your configuration.`,
|
|
"ESLintCircularFixesWarning",
|
|
);
|
|
break;
|
|
}
|
|
} while (fixedResult.fixed && passNumber < MAX_AUTOFIX_PASSES);
|
|
|
|
/*
|
|
* If the last result had fixes, we need to lint again to be sure we have
|
|
* the most up-to-date information.
|
|
*/
|
|
if (fixedResult.fixed) {
|
|
let tTotal;
|
|
|
|
if (stats) {
|
|
tTotal = startTime();
|
|
}
|
|
|
|
fixedResult.messages = this.verify(currentText, config, options);
|
|
|
|
if (stats) {
|
|
storeTime(0, { type: "fix" }, slots);
|
|
slots.times.passes.at(-1).total = endTime(tTotal);
|
|
}
|
|
}
|
|
|
|
// ensure the last result properly reflects if fixes were done
|
|
fixedResult.fixed = fixed;
|
|
fixedResult.output = currentText;
|
|
|
|
return fixedResult;
|
|
}
|
|
}
|
|
|
|
module.exports = {
|
|
Linter,
|
|
|
|
/**
|
|
* Get the internal slots of a given Linter instance for tests.
|
|
* @param {Linter} instance The Linter instance to get.
|
|
* @returns {LinterInternalSlots} The internal slots.
|
|
*/
|
|
getLinterInternalSlots(instance) {
|
|
return internalSlotsMap.get(instance);
|
|
},
|
|
};
|