You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
2119 lines
80 KiB
2119 lines
80 KiB
/**
|
|
* @fileoverview Main Linter Class
|
|
* @author Gyandeep Singh
|
|
* @author aladdin-add
|
|
*/
|
|
|
|
"use strict";
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Requirements
|
|
//------------------------------------------------------------------------------
|
|
|
|
const
|
|
path = require("path"),
|
|
eslintScope = require("eslint-scope"),
|
|
evk = require("eslint-visitor-keys"),
|
|
espree = require("espree"),
|
|
merge = require("lodash.merge"),
|
|
pkg = require("../../package.json"),
|
|
astUtils = require("../shared/ast-utils"),
|
|
{
|
|
directivesPattern
|
|
} = require("../shared/directives"),
|
|
{
|
|
Legacy: {
|
|
ConfigOps,
|
|
ConfigValidator,
|
|
environments: BuiltInEnvironments
|
|
}
|
|
} = require("@eslint/eslintrc/universal"),
|
|
Traverser = require("../shared/traverser"),
|
|
{ SourceCode } = require("../source-code"),
|
|
CodePathAnalyzer = require("./code-path-analysis/code-path-analyzer"),
|
|
applyDisableDirectives = require("./apply-disable-directives"),
|
|
ConfigCommentParser = require("./config-comment-parser"),
|
|
NodeEventGenerator = require("./node-event-generator"),
|
|
createReportTranslator = require("./report-translator"),
|
|
Rules = require("./rules"),
|
|
createEmitter = require("./safe-emitter"),
|
|
SourceCodeFixer = require("./source-code-fixer"),
|
|
timing = require("./timing"),
|
|
ruleReplacements = require("../../conf/replacements.json");
|
|
const { getRuleFromConfig } = require("../config/flat-config-helpers");
|
|
const { FlatConfigArray } = require("../config/flat-config-array");
|
|
const { RuleValidator } = require("../config/rule-validator");
|
|
const { assertIsRuleOptions, assertIsRuleSeverity } = require("../config/flat-config-schema");
|
|
const { normalizeSeverityToString } = require("../shared/severity");
|
|
const debug = require("debug")("eslint:linter");
|
|
const MAX_AUTOFIX_PASSES = 10;
|
|
const DEFAULT_PARSER_NAME = "espree";
|
|
const DEFAULT_ECMA_VERSION = 5;
|
|
const commentParser = new ConfigCommentParser();
|
|
const DEFAULT_ERROR_LOC = { start: { line: 1, column: 0 }, end: { line: 1, column: 1 } };
|
|
const parserSymbol = Symbol.for("eslint.RuleTester.parser");
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Typedefs
|
|
//------------------------------------------------------------------------------
|
|
|
|
/** @typedef {InstanceType<import("../cli-engine/config-array").ConfigArray>} ConfigArray */
|
|
/** @typedef {InstanceType<import("../cli-engine/config-array").ExtractedConfig>} ExtractedConfig */
|
|
/** @typedef {import("../shared/types").ConfigData} ConfigData */
|
|
/** @typedef {import("../shared/types").Environment} Environment */
|
|
/** @typedef {import("../shared/types").GlobalConf} GlobalConf */
|
|
/** @typedef {import("../shared/types").LintMessage} LintMessage */
|
|
/** @typedef {import("../shared/types").SuppressedLintMessage} SuppressedLintMessage */
|
|
/** @typedef {import("../shared/types").ParserOptions} ParserOptions */
|
|
/** @typedef {import("../shared/types").LanguageOptions} LanguageOptions */
|
|
/** @typedef {import("../shared/types").Processor} Processor */
|
|
/** @typedef {import("../shared/types").Rule} Rule */
|
|
|
|
/* eslint-disable jsdoc/valid-types -- https://github.com/jsdoc-type-pratt-parser/jsdoc-type-pratt-parser/issues/4#issuecomment-778805577 */
|
|
/**
|
|
* @template T
|
|
* @typedef {{ [P in keyof T]-?: T[P] }} Required
|
|
*/
|
|
/* eslint-enable jsdoc/valid-types -- https://github.com/jsdoc-type-pratt-parser/jsdoc-type-pratt-parser/issues/4#issuecomment-778805577 */
|
|
|
|
/**
|
|
* @typedef {Object} DisableDirective
|
|
* @property {("disable"|"enable"|"disable-line"|"disable-next-line")} type Type of directive
|
|
* @property {number} line The line number
|
|
* @property {number} column The column number
|
|
* @property {(string|null)} ruleId The rule ID
|
|
* @property {string} justification The justification of directive
|
|
*/
|
|
|
|
/**
|
|
* The private data for `Linter` instance.
|
|
* @typedef {Object} LinterInternalSlots
|
|
* @property {ConfigArray|null} lastConfigArray The `ConfigArray` instance that the last `verify()` call used.
|
|
* @property {SourceCode|null} lastSourceCode The `SourceCode` instance that the last `verify()` call used.
|
|
* @property {SuppressedLintMessage[]} lastSuppressedMessages The `SuppressedLintMessage[]` instance that the last `verify()` call produced.
|
|
* @property {Map<string, Parser>} parserMap The loaded parsers.
|
|
* @property {Rules} ruleMap The loaded rules.
|
|
*/
|
|
|
|
/**
|
|
* @typedef {Object} VerifyOptions
|
|
* @property {boolean} [allowInlineConfig] Allow/disallow inline comments' ability
|
|
* to change config once it is set. Defaults to true if not supplied.
|
|
* Useful if you want to validate JS without comments overriding rules.
|
|
* @property {boolean} [disableFixes] if `true` then the linter doesn't make `fix`
|
|
* properties into the lint result.
|
|
* @property {string} [filename] the filename of the source code.
|
|
* @property {boolean | "off" | "warn" | "error"} [reportUnusedDisableDirectives] Adds reported errors for
|
|
* unused `eslint-disable` directives.
|
|
*/
|
|
|
|
/**
|
|
* @typedef {Object} ProcessorOptions
|
|
* @property {(filename:string, text:string) => boolean} [filterCodeBlock] the
|
|
* predicate function that selects adopt code blocks.
|
|
* @property {Processor.postprocess} [postprocess] postprocessor for report
|
|
* messages. If provided, this should accept an array of the message lists
|
|
* for each code block returned from the preprocessor, apply a mapping to
|
|
* the messages as appropriate, and return a one-dimensional array of
|
|
* messages.
|
|
* @property {Processor.preprocess} [preprocess] preprocessor for source text.
|
|
* If provided, this should accept a string of source text, and return an
|
|
* array of code blocks to lint.
|
|
*/
|
|
|
|
/**
|
|
* @typedef {Object} FixOptions
|
|
* @property {boolean | ((message: LintMessage) => boolean)} [fix] Determines
|
|
* whether fixes should be applied.
|
|
*/
|
|
|
|
/**
|
|
* @typedef {Object} InternalOptions
|
|
* @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.
|
|
* @property {"off" | "warn" | "error"} reportUnusedDisableDirectives (boolean values were normalized)
|
|
*/
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Helpers
|
|
//------------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Determines if a given object is Espree.
|
|
* @param {Object} parser The parser to check.
|
|
* @returns {boolean} True if the parser is Espree or false if not.
|
|
*/
|
|
function isEspree(parser) {
|
|
return !!(parser === espree || parser[parserSymbol] === espree);
|
|
}
|
|
|
|
/**
|
|
* Ensures that variables representing built-in properties of the Global Object,
|
|
* and any globals declared by special block comments, are present in the global
|
|
* scope.
|
|
* @param {Scope} globalScope The global scope.
|
|
* @param {Object} configGlobals The globals declared in configuration
|
|
* @param {{exportedVariables: Object, enabledGlobals: Object}} commentDirectives Directives from comment configuration
|
|
* @returns {void}
|
|
*/
|
|
function addDeclaredGlobals(globalScope, configGlobals, { exportedVariables, enabledGlobals }) {
|
|
|
|
// Define configured global variables.
|
|
for (const id of new Set([...Object.keys(configGlobals), ...Object.keys(enabledGlobals)])) {
|
|
|
|
/*
|
|
* `ConfigOps.normalizeConfigGlobal` will throw an error if a configured global value is invalid. However, these errors would
|
|
* typically be caught when validating a config anyway (validity for inline global comments is checked separately).
|
|
*/
|
|
const configValue = configGlobals[id] === void 0 ? void 0 : ConfigOps.normalizeConfigGlobal(configGlobals[id]);
|
|
const commentValue = enabledGlobals[id] && enabledGlobals[id].value;
|
|
const value = commentValue || configValue;
|
|
const sourceComments = enabledGlobals[id] && enabledGlobals[id].comments;
|
|
|
|
if (value === "off") {
|
|
continue;
|
|
}
|
|
|
|
let variable = globalScope.set.get(id);
|
|
|
|
if (!variable) {
|
|
variable = new eslintScope.Variable(id, globalScope);
|
|
|
|
globalScope.variables.push(variable);
|
|
globalScope.set.set(id, variable);
|
|
}
|
|
|
|
variable.eslintImplicitGlobalSetting = configValue;
|
|
variable.eslintExplicitGlobal = sourceComments !== void 0;
|
|
variable.eslintExplicitGlobalComments = sourceComments;
|
|
variable.writeable = (value === "writable");
|
|
}
|
|
|
|
// mark all exported variables as such
|
|
Object.keys(exportedVariables).forEach(name => {
|
|
const variable = globalScope.set.get(name);
|
|
|
|
if (variable) {
|
|
variable.eslintUsed = true;
|
|
variable.eslintExported = true;
|
|
}
|
|
});
|
|
|
|
/*
|
|
* "through" contains all references which definitions cannot be found.
|
|
* Since we augment the global scope using configuration, we need to update
|
|
* references and remove the ones that were added by configuration.
|
|
*/
|
|
globalScope.through = globalScope.through.filter(reference => {
|
|
const name = reference.identifier.name;
|
|
const variable = globalScope.set.get(name);
|
|
|
|
if (variable) {
|
|
|
|
/*
|
|
* Links the variable and the reference.
|
|
* And this reference is removed from `Scope#through`.
|
|
*/
|
|
reference.resolved = variable;
|
|
variable.references.push(reference);
|
|
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
});
|
|
}
|
|
|
|
/**
|
|
* creates a missing-rule message.
|
|
* @param {string} ruleId the ruleId to create
|
|
* @returns {string} created error message
|
|
* @private
|
|
*/
|
|
function createMissingRuleMessage(ruleId) {
|
|
return Object.prototype.hasOwnProperty.call(ruleReplacements.rules, ruleId)
|
|
? `Rule '${ruleId}' was removed and replaced by: ${ruleReplacements.rules[ruleId].join(", ")}`
|
|
: `Definition for rule '${ruleId}' was not found.`;
|
|
}
|
|
|
|
/**
|
|
* creates a linting problem
|
|
* @param {Object} options to create linting error
|
|
* @param {string} [options.ruleId] the ruleId to report
|
|
* @param {Object} [options.loc] the loc to report
|
|
* @param {string} [options.message] the error message to report
|
|
* @param {string} [options.severity] the error message to report
|
|
* @returns {LintMessage} created problem, returns a missing-rule problem if only provided ruleId.
|
|
* @private
|
|
*/
|
|
function createLintingProblem(options) {
|
|
const {
|
|
ruleId = null,
|
|
loc = DEFAULT_ERROR_LOC,
|
|
message = createMissingRuleMessage(options.ruleId),
|
|
severity = 2
|
|
} = options;
|
|
|
|
return {
|
|
ruleId,
|
|
message,
|
|
line: loc.start.line,
|
|
column: loc.start.column + 1,
|
|
endLine: loc.end.line,
|
|
endColumn: loc.end.column + 1,
|
|
severity,
|
|
nodeType: null
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Creates a collection of disable directives from a comment
|
|
* @param {Object} options to create disable directives
|
|
* @param {("disable"|"enable"|"disable-line"|"disable-next-line")} options.type The type of directive comment
|
|
* @param {token} options.commentToken The Comment token
|
|
* @param {string} options.value The value after the directive in the comment
|
|
* comment specified no specific rules, so it applies to all rules (e.g. `eslint-disable`)
|
|
* @param {string} options.justification The justification of the directive
|
|
* @param {function(string): {create: Function}} options.ruleMapper A map from rule IDs to defined rules
|
|
* @returns {Object} Directives and problems from the comment
|
|
*/
|
|
function createDisableDirectives(options) {
|
|
const { commentToken, type, value, justification, ruleMapper } = options;
|
|
const ruleIds = Object.keys(commentParser.parseListConfig(value));
|
|
const directiveRules = ruleIds.length ? ruleIds : [null];
|
|
const result = {
|
|
directives: [], // valid disable directives
|
|
directiveProblems: [] // problems in directives
|
|
};
|
|
|
|
const parentComment = { commentToken, ruleIds };
|
|
|
|
for (const ruleId of directiveRules) {
|
|
|
|
// push to directives, if the rule is defined(including null, e.g. /*eslint enable*/)
|
|
if (ruleId === null || !!ruleMapper(ruleId)) {
|
|
if (type === "disable-next-line") {
|
|
result.directives.push({
|
|
parentComment,
|
|
type,
|
|
line: commentToken.loc.end.line,
|
|
column: commentToken.loc.end.column + 1,
|
|
ruleId,
|
|
justification
|
|
});
|
|
} else {
|
|
result.directives.push({
|
|
parentComment,
|
|
type,
|
|
line: commentToken.loc.start.line,
|
|
column: commentToken.loc.start.column + 1,
|
|
ruleId,
|
|
justification
|
|
});
|
|
}
|
|
} else {
|
|
result.directiveProblems.push(createLintingProblem({ ruleId, loc: commentToken.loc }));
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Parses comments in file to extract file-specific config of rules, globals
|
|
* and environments and merges them with global config; also code blocks
|
|
* where reporting is disabled or enabled and merges them with reporting config.
|
|
* @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 {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.
|
|
* @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) {
|
|
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 { directivePart, justificationPart } = commentParser.extractDirectiveComment(comment.value);
|
|
|
|
const match = directivesPattern.exec(directivePart);
|
|
|
|
if (!match) {
|
|
return;
|
|
}
|
|
const directiveText = match[1];
|
|
const lineCommentSupported = /^eslint-disable-(next-)?line$/u.test(directiveText);
|
|
|
|
if (comment.type === "Line" && !lineCommentSupported) {
|
|
return;
|
|
}
|
|
|
|
if (warnInlineConfig) {
|
|
const kind = comment.type === "Block" ? `/*${directiveText}*/` : `//${directiveText}`;
|
|
|
|
problems.push(createLintingProblem({
|
|
ruleId: null,
|
|
message: `'${kind}' has no effect because you have 'noInlineConfig' setting in ${warnInlineConfig}.`,
|
|
loc: comment.loc,
|
|
severity: 1
|
|
}));
|
|
return;
|
|
}
|
|
|
|
if (directiveText === "eslint-disable-line" && comment.loc.start.line !== comment.loc.end.line) {
|
|
const message = `${directiveText} comment should not span multiple lines.`;
|
|
|
|
problems.push(createLintingProblem({
|
|
ruleId: null,
|
|
message,
|
|
loc: comment.loc
|
|
}));
|
|
return;
|
|
}
|
|
|
|
const directiveValue = directivePart.slice(match.index + directiveText.length);
|
|
|
|
switch (directiveText) {
|
|
case "eslint-disable":
|
|
case "eslint-enable":
|
|
case "eslint-disable-next-line":
|
|
case "eslint-disable-line": {
|
|
const directiveType = directiveText.slice("eslint-".length);
|
|
const options = { commentToken: comment, type: directiveType, value: directiveValue, justification: justificationPart, ruleMapper };
|
|
const { directives, directiveProblems } = createDisableDirectives(options);
|
|
|
|
disableDirectives.push(...directives);
|
|
problems.push(...directiveProblems);
|
|
break;
|
|
}
|
|
|
|
case "exported":
|
|
Object.assign(exportedVariables, commentParser.parseStringConfig(directiveValue, comment));
|
|
break;
|
|
|
|
case "globals":
|
|
case "global":
|
|
for (const [id, { value }] of Object.entries(commentParser.parseStringConfig(directiveValue, comment))) {
|
|
let normalizedValue;
|
|
|
|
try {
|
|
normalizedValue = ConfigOps.normalizeConfigGlobal(value);
|
|
} catch (err) {
|
|
problems.push(createLintingProblem({
|
|
ruleId: null,
|
|
loc: comment.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.parseJsonConfig(directiveValue, comment.loc);
|
|
|
|
if (parseResult.success) {
|
|
Object.keys(parseResult.config).forEach(name => {
|
|
const rule = ruleMapper(name);
|
|
const ruleValue = parseResult.config[name];
|
|
|
|
if (!rule) {
|
|
problems.push(createLintingProblem({ ruleId: name, loc: comment.loc }));
|
|
return;
|
|
}
|
|
|
|
try {
|
|
validator.validateRuleOptions(rule, name, ruleValue);
|
|
} catch (err) {
|
|
problems.push(createLintingProblem({
|
|
ruleId: name,
|
|
message: err.message,
|
|
loc: comment.loc
|
|
}));
|
|
|
|
// do not apply the config, if found invalid options.
|
|
return;
|
|
}
|
|
|
|
configuredRules[name] = ruleValue;
|
|
});
|
|
} else {
|
|
problems.push(parseResult.error);
|
|
}
|
|
|
|
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
|
|
* @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) {
|
|
const problems = [];
|
|
const disableDirectives = [];
|
|
|
|
sourceCode.getInlineConfigNodes().filter(token => token.type !== "Shebang").forEach(comment => {
|
|
const { directivePart, justificationPart } = commentParser.extractDirectiveComment(comment.value);
|
|
|
|
const match = directivesPattern.exec(directivePart);
|
|
|
|
if (!match) {
|
|
return;
|
|
}
|
|
const directiveText = match[1];
|
|
const lineCommentSupported = /^eslint-disable-(next-)?line$/u.test(directiveText);
|
|
|
|
if (comment.type === "Line" && !lineCommentSupported) {
|
|
return;
|
|
}
|
|
|
|
if (directiveText === "eslint-disable-line" && comment.loc.start.line !== comment.loc.end.line) {
|
|
const message = `${directiveText} comment should not span multiple lines.`;
|
|
|
|
problems.push(createLintingProblem({
|
|
ruleId: null,
|
|
message,
|
|
loc: comment.loc
|
|
}));
|
|
return;
|
|
}
|
|
|
|
const directiveValue = directivePart.slice(match.index + directiveText.length);
|
|
|
|
switch (directiveText) {
|
|
case "eslint-disable":
|
|
case "eslint-enable":
|
|
case "eslint-disable-next-line":
|
|
case "eslint-disable-line": {
|
|
const directiveType = directiveText.slice("eslint-".length);
|
|
const options = { commentToken: comment, type: directiveType, value: directiveValue, justification: justificationPart, ruleMapper };
|
|
const { directives, directiveProblems } = createDisableDirectives(options);
|
|
|
|
disableDirectives.push(...directives);
|
|
problems.push(...directiveProblems);
|
|
break;
|
|
}
|
|
|
|
// no default
|
|
}
|
|
});
|
|
|
|
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 espree.latestEcmaVersion + 2009;
|
|
}
|
|
|
|
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.extractDirectiveComment(match[1]).directivePart)
|
|
);
|
|
}
|
|
}
|
|
|
|
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);
|
|
}
|
|
}
|
|
|
|
return {
|
|
filename: normalizeFilename(providedOptions.filename || "<input>"),
|
|
allowInlineConfig: !ignoreInlineConfig,
|
|
warnInlineConfig: disableInlineConfig && !ignoreInlineConfig
|
|
? `your config${configNameOfNoInlineConfig}`
|
|
: null,
|
|
reportUnusedDisableDirectives,
|
|
disableFixes: Boolean(providedOptions.disableFixes)
|
|
};
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Strips Unicode BOM from a given text.
|
|
* @param {string} text A text to strip.
|
|
* @returns {string} The stripped text.
|
|
*/
|
|
function stripUnicodeBOM(text) {
|
|
|
|
/*
|
|
* Check Unicode BOM.
|
|
* In JavaScript, string data is stored as UTF-16, so BOM is 0xFEFF.
|
|
* http://www.ecma-international.org/ecma-262/6.0/#sec-unicode-format-control-characters
|
|
*/
|
|
if (text.charCodeAt(0) === 0xFEFF) {
|
|
return text.slice(1);
|
|
}
|
|
return text;
|
|
}
|
|
|
|
/**
|
|
* Get the options for a rule (not including severity), if any
|
|
* @param {Array|number} ruleConfig rule configuration
|
|
* @returns {Array} of rule options, empty Array if none
|
|
*/
|
|
function getRuleOptions(ruleConfig) {
|
|
if (Array.isArray(ruleConfig)) {
|
|
return ruleConfig.slice(1);
|
|
}
|
|
return [];
|
|
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Parses text into an AST. Moved out here because the try-catch prevents
|
|
* optimization of functions, so it's best to keep the try-catch as isolated
|
|
* as possible
|
|
* @param {string} text The text to parse.
|
|
* @param {LanguageOptions} languageOptions Options to pass to the parser
|
|
* @param {string} filePath The path to the file being parsed.
|
|
* @returns {{success: false, error: LintMessage}|{success: true, sourceCode: SourceCode}}
|
|
* An object containing the AST and parser services if parsing was successful, or the error if parsing failed
|
|
* @private
|
|
*/
|
|
function parse(text, languageOptions, filePath) {
|
|
const textToParse = stripUnicodeBOM(text).replace(astUtils.shebangPattern, (match, captured) => `//${captured}`);
|
|
const { ecmaVersion, sourceType, parser } = languageOptions;
|
|
const parserOptions = Object.assign(
|
|
{ ecmaVersion, sourceType },
|
|
languageOptions.parserOptions,
|
|
{
|
|
loc: true,
|
|
range: true,
|
|
raw: true,
|
|
tokens: true,
|
|
comment: true,
|
|
eslintVisitorKeys: true,
|
|
eslintScopeManager: true,
|
|
filePath
|
|
}
|
|
);
|
|
|
|
/*
|
|
* Check for parsing errors first. If there's a parsing error, nothing
|
|
* else can happen. However, a parsing error does not throw an error
|
|
* from this method - it's just considered a fatal error message, a
|
|
* problem that ESLint identified just like any other.
|
|
*/
|
|
try {
|
|
debug("Parsing:", filePath);
|
|
const parseResult = (typeof parser.parseForESLint === "function")
|
|
? parser.parseForESLint(textToParse, parserOptions)
|
|
: { ast: parser.parse(textToParse, parserOptions) };
|
|
|
|
debug("Parsing successful:", filePath);
|
|
const ast = parseResult.ast;
|
|
const parserServices = parseResult.services || {};
|
|
const visitorKeys = parseResult.visitorKeys || evk.KEYS;
|
|
|
|
debug("Scope analysis:", filePath);
|
|
const scopeManager = parseResult.scopeManager || analyzeScope(ast, languageOptions, visitorKeys);
|
|
|
|
debug("Scope analysis successful:", filePath);
|
|
|
|
return {
|
|
success: true,
|
|
|
|
/*
|
|
* Save all values that `parseForESLint()` returned.
|
|
* If a `SourceCode` object is given as the first parameter instead of source code text,
|
|
* linter skips the parsing process and reuses the source code object.
|
|
* In that case, linter needs all the values that `parseForESLint()` returned.
|
|
*/
|
|
sourceCode: new SourceCode({
|
|
text,
|
|
ast,
|
|
parserServices,
|
|
scopeManager,
|
|
visitorKeys
|
|
})
|
|
};
|
|
} catch (ex) {
|
|
|
|
// If the message includes a leading line number, strip it:
|
|
const message = `Parsing error: ${ex.message.replace(/^line \d+:/iu, "").trim()}`;
|
|
|
|
debug("%s\n%s", message, ex.stack);
|
|
|
|
return {
|
|
success: false,
|
|
error: {
|
|
ruleId: null,
|
|
fatal: true,
|
|
severity: 2,
|
|
message,
|
|
line: ex.lineNumber,
|
|
column: ex.column,
|
|
nodeType: null
|
|
}
|
|
};
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Runs a rule, and gets its listeners
|
|
* @param {Rule} rule A normalized rule with a `create` method
|
|
* @param {Context} ruleContext The context that should be passed to the rule
|
|
* @throws {any} Any error during the rule's `create`
|
|
* @returns {Object} A map of selector listeners provided by the rule
|
|
*/
|
|
function createRuleListeners(rule, ruleContext) {
|
|
try {
|
|
return rule.create(ruleContext);
|
|
} catch (ex) {
|
|
ex.message = `Error while loading rule '${ruleContext.id}': ${ex.message}`;
|
|
throw ex;
|
|
}
|
|
}
|
|
|
|
// methods that exist on SourceCode object
|
|
const DEPRECATED_SOURCECODE_PASSTHROUGHS = {
|
|
getSource: "getText",
|
|
getSourceLines: "getLines",
|
|
getAllComments: "getAllComments",
|
|
getNodeByRangeIndex: "getNodeByRangeIndex",
|
|
getComments: "getComments",
|
|
getCommentsBefore: "getCommentsBefore",
|
|
getCommentsAfter: "getCommentsAfter",
|
|
getCommentsInside: "getCommentsInside",
|
|
getJSDocComment: "getJSDocComment",
|
|
getFirstToken: "getFirstToken",
|
|
getFirstTokens: "getFirstTokens",
|
|
getLastToken: "getLastToken",
|
|
getLastTokens: "getLastTokens",
|
|
getTokenAfter: "getTokenAfter",
|
|
getTokenBefore: "getTokenBefore",
|
|
getTokenByRangeStart: "getTokenByRangeStart",
|
|
getTokens: "getTokens",
|
|
getTokensAfter: "getTokensAfter",
|
|
getTokensBefore: "getTokensBefore",
|
|
getTokensBetween: "getTokensBetween"
|
|
};
|
|
|
|
|
|
const BASE_TRAVERSAL_CONTEXT = Object.freeze(
|
|
Object.keys(DEPRECATED_SOURCECODE_PASSTHROUGHS).reduce(
|
|
(contextInfo, methodName) =>
|
|
Object.assign(contextInfo, {
|
|
[methodName](...args) {
|
|
return this.sourceCode[DEPRECATED_SOURCECODE_PASSTHROUGHS[methodName]](...args);
|
|
}
|
|
}),
|
|
{}
|
|
)
|
|
);
|
|
|
|
/**
|
|
* 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 {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} 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
|
|
* @returns {LintMessage[]} An array of reported problems
|
|
*/
|
|
function runRules(sourceCode, configuredRules, ruleMapper, parserName, languageOptions, settings, filename, disableFixes, cwd, physicalFilename) {
|
|
const emitter = createEmitter();
|
|
const nodeQueue = [];
|
|
let currentNode = sourceCode.ast;
|
|
|
|
Traverser.traverse(sourceCode.ast, {
|
|
enter(node, parent) {
|
|
node.parent = parent;
|
|
nodeQueue.push({ isEntering: true, node });
|
|
},
|
|
leave(node) {
|
|
nodeQueue.push({ isEntering: false, node });
|
|
},
|
|
visitorKeys: sourceCode.visitorKeys
|
|
});
|
|
|
|
/*
|
|
* 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 = Object.freeze(
|
|
Object.assign(
|
|
Object.create(BASE_TRAVERSAL_CONTEXT),
|
|
{
|
|
getAncestors: () => sourceCode.getAncestors(currentNode),
|
|
getDeclaredVariables: node => sourceCode.getDeclaredVariables(node),
|
|
getCwd: () => cwd,
|
|
cwd,
|
|
getFilename: () => filename,
|
|
filename,
|
|
getPhysicalFilename: () => physicalFilename || filename,
|
|
physicalFilename: physicalFilename || filename,
|
|
getScope: () => sourceCode.getScope(currentNode),
|
|
getSourceCode: () => sourceCode,
|
|
sourceCode,
|
|
markVariableAsUsed: name => sourceCode.markVariableAsUsed(name, currentNode),
|
|
parserOptions: {
|
|
...languageOptions.parserOptions
|
|
},
|
|
parserPath: parserName,
|
|
languageOptions,
|
|
parserServices: sourceCode.parserServices,
|
|
settings
|
|
}
|
|
)
|
|
);
|
|
|
|
const lintingProblems = [];
|
|
|
|
Object.keys(configuredRules).forEach(ruleId => {
|
|
const severity = ConfigOps.getRuleSeverity(configuredRules[ruleId]);
|
|
|
|
// not load disabled rules
|
|
if (severity === 0) {
|
|
return;
|
|
}
|
|
|
|
const rule = ruleMapper(ruleId);
|
|
|
|
if (!rule) {
|
|
lintingProblems.push(createLintingProblem({ ruleId }));
|
|
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]),
|
|
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
|
|
});
|
|
}
|
|
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 ruleListeners = timing.enabled ? timing.time(ruleId, createRuleListeners)(rule, ruleContext) : createRuleListeners(rule, ruleContext);
|
|
|
|
/**
|
|
* 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 {
|
|
return ruleListener(...listenerArgs);
|
|
} 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
|
|
? timing.time(ruleId, ruleListeners[selector])
|
|
: ruleListeners[selector];
|
|
|
|
emitter.on(
|
|
selector,
|
|
addRuleErrorHandler(ruleListener)
|
|
);
|
|
});
|
|
});
|
|
|
|
// only run code path analyzer if the top level node is "Program", skip otherwise
|
|
const eventGenerator = nodeQueue[0].node.type === "Program"
|
|
? new CodePathAnalyzer(new NodeEventGenerator(emitter, { visitorKeys: sourceCode.visitorKeys, fallback: Traverser.getKeys }))
|
|
: new NodeEventGenerator(emitter, { visitorKeys: sourceCode.visitorKeys, fallback: Traverser.getKeys });
|
|
|
|
nodeQueue.forEach(traversalInfo => {
|
|
currentNode = traversalInfo.node;
|
|
|
|
try {
|
|
if (traversalInfo.isEntering) {
|
|
eventGenerator.enterNode(currentNode);
|
|
} else {
|
|
eventGenerator.leaveNode(currentNode);
|
|
}
|
|
} catch (err) {
|
|
err.currentNode = currentNode;
|
|
throw err;
|
|
}
|
|
});
|
|
|
|
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 {"flat"|"eslintrc"} [config.configType="eslintrc"] the type of config used.
|
|
*/
|
|
constructor({ cwd, configType } = {}) {
|
|
internalSlotsMap.set(this, {
|
|
cwd: normalizeCwd(cwd),
|
|
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;
|
|
}
|
|
|
|
/**
|
|
* 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 config = providedConfig || {};
|
|
const options = normalizeVerifyOptions(providedOptions, config);
|
|
let text;
|
|
|
|
// evaluate arguments
|
|
if (typeof textOrSourceCode === "string") {
|
|
slots.lastSourceCode = null;
|
|
text = textOrSourceCode;
|
|
} else {
|
|
slots.lastSourceCode = textOrSourceCode;
|
|
text = textOrSourceCode.text;
|
|
}
|
|
|
|
// 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(text)
|
|
: {};
|
|
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) {
|
|
const parseResult = parse(
|
|
text,
|
|
languageOptions,
|
|
options.filename
|
|
);
|
|
|
|
if (!parseResult.success) {
|
|
return [parseResult.error];
|
|
}
|
|
|
|
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,
|
|
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)
|
|
: { configuredRules: {}, enabledGlobals: {}, exportedVariables: {}, problems: [], disableDirectives: [] };
|
|
|
|
// augment global scope with declared global variables
|
|
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,
|
|
languageOptions,
|
|
settings,
|
|
options.filename,
|
|
options.disableFixes,
|
|
slots.cwd,
|
|
providedOptions.physicalFilename
|
|
);
|
|
} catch (err) {
|
|
err.message += `\nOccurred while linting ${options.filename}`;
|
|
debug("An error occurred while traversing");
|
|
debug("Filename:", options.filename);
|
|
if (err.currentNode) {
|
|
const { line } = err.currentNode.loc.start;
|
|
|
|
debug("Line:", line);
|
|
err.message += `:${line}`;
|
|
}
|
|
debug("Parser Options:", parserOptions);
|
|
debug("Parser Path:", parserName);
|
|
debug("Settings:", settings);
|
|
|
|
if (err.ruleId) {
|
|
err.message += `\nRule: "${err.ruleId}"`;
|
|
}
|
|
|
|
throw err;
|
|
}
|
|
|
|
return applyDisableDirectives({
|
|
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
|
|
});
|
|
}
|
|
|
|
/**
|
|
* 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 || {};
|
|
|
|
if (config) {
|
|
if (configType === "flat") {
|
|
|
|
/*
|
|
* 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 = config;
|
|
|
|
if (!Array.isArray(config) || typeof config.getConfig !== "function") {
|
|
configArray = new FlatConfigArray(config, { basePath: cwd });
|
|
configArray.normalizeSync();
|
|
}
|
|
|
|
return this._distinguishSuppressedMessages(this._verifyWithFlatConfigArray(textOrSourceCode, configArray, options, true));
|
|
}
|
|
|
|
if (typeof config.extractConfig === "function") {
|
|
return this._distinguishSuppressedMessages(this._verifyWithConfigArray(textOrSourceCode, config, 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, config, options));
|
|
}
|
|
return this._distinguishSuppressedMessages(this._verifyWithoutProcessors(textOrSourceCode, config, 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 filename = options.filename || "<input>";
|
|
const filenameToExpose = normalizeFilename(filename);
|
|
const physicalFilename = options.physicalFilename || filenameToExpose;
|
|
const text = ensureText(textOrSourceCode);
|
|
const preprocess = options.preprocess || (rawText => [rawText]);
|
|
const postprocess = options.postprocess || (messagesList => messagesList.flat());
|
|
const filterCodeBlock =
|
|
options.filterCodeBlock ||
|
|
(blockFilename => blockFilename.endsWith(".js"));
|
|
const originalExtname = path.extname(filename);
|
|
|
|
let blocks;
|
|
|
|
try {
|
|
blocks = preprocess(text, filenameToExpose);
|
|
} catch (ex) {
|
|
|
|
// If the message includes a leading line number, strip it:
|
|
const message = `Preprocessing error: ${ex.message.replace(/^line \d+:/iu, "").trim()}`;
|
|
|
|
debug("%s\n%s", message, ex.stack);
|
|
|
|
return [
|
|
{
|
|
ruleId: null,
|
|
fatal: true,
|
|
severity: 2,
|
|
message,
|
|
line: ex.lineNumber,
|
|
column: ex.column,
|
|
nodeType: null
|
|
}
|
|
];
|
|
}
|
|
|
|
const messageLists = blocks.map((block, i) => {
|
|
debug("A code block was found: %o", block.filename || "(unnamed)");
|
|
|
|
// Keep the legacy behavior.
|
|
if (typeof block === "string") {
|
|
return this._verifyWithFlatConfigArrayAndWithoutProcessors(block, config, options);
|
|
}
|
|
|
|
const blockText = block.text;
|
|
const blockName = path.join(filename, `${i}_${block.filename}`);
|
|
|
|
// Skip this block if filtered.
|
|
if (!filterCodeBlock(blockName, blockText)) {
|
|
debug("This code block was skipped.");
|
|
return [];
|
|
}
|
|
|
|
// Resolve configuration again if the file content or extension was changed.
|
|
if (configForRecursive && (text !== blockText || path.extname(blockName) !== originalExtname)) {
|
|
debug("Resolving configuration again because the file content or extension was changed.");
|
|
return this._verifyWithFlatConfigArray(
|
|
blockText,
|
|
configForRecursive,
|
|
{ ...options, filename: blockName, physicalFilename }
|
|
);
|
|
}
|
|
|
|
// Does lint.
|
|
return this._verifyWithFlatConfigArrayAndWithoutProcessors(
|
|
blockText,
|
|
config,
|
|
{ ...options, filename: blockName, physicalFilename }
|
|
);
|
|
});
|
|
|
|
return postprocess(messageLists, filenameToExpose);
|
|
}
|
|
|
|
/**
|
|
* 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 config = providedConfig || {};
|
|
const options = normalizeVerifyOptions(providedOptions, config);
|
|
let text;
|
|
|
|
// evaluate arguments
|
|
if (typeof textOrSourceCode === "string") {
|
|
slots.lastSourceCode = null;
|
|
text = textOrSourceCode;
|
|
} else {
|
|
slots.lastSourceCode = textOrSourceCode;
|
|
text = textOrSourceCode.text;
|
|
}
|
|
|
|
const languageOptions = config.languageOptions;
|
|
|
|
languageOptions.ecmaVersion = normalizeEcmaVersionForLanguageOptions(
|
|
languageOptions.ecmaVersion
|
|
);
|
|
|
|
// double check that there is a parser to avoid mysterious error messages
|
|
if (!languageOptions.parser) {
|
|
throw new TypeError(`No parser specified for ${options.filename}`);
|
|
}
|
|
|
|
// Espree expects this information to be passed in
|
|
if (isEspree(languageOptions.parser)) {
|
|
const parserOptions = languageOptions.parserOptions;
|
|
|
|
if (languageOptions.sourceType) {
|
|
|
|
parserOptions.sourceType = languageOptions.sourceType;
|
|
|
|
if (
|
|
parserOptions.sourceType === "module" &&
|
|
parserOptions.ecmaFeatures &&
|
|
parserOptions.ecmaFeatures.globalReturn
|
|
) {
|
|
parserOptions.ecmaFeatures.globalReturn = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
const settings = config.settings || {};
|
|
|
|
if (!slots.lastSourceCode) {
|
|
const parseResult = parse(
|
|
text,
|
|
languageOptions,
|
|
options.filename
|
|
);
|
|
|
|
if (!parseResult.success) {
|
|
return [parseResult.error];
|
|
}
|
|
|
|
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,
|
|
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) {
|
|
sourceCode.getInlineConfigNodes().forEach(node => {
|
|
inlineConfigProblems.push(createLintingProblem({
|
|
ruleId: null,
|
|
message: `'${sourceCode.text.slice(node.range[0], node.range[1])}' has no effect because you have 'noInlineConfig' setting in ${options.warnInlineConfig}.`,
|
|
loc: node.loc,
|
|
severity: 1
|
|
}));
|
|
|
|
});
|
|
} else {
|
|
const inlineConfigResult = sourceCode.applyInlineConfig();
|
|
|
|
inlineConfigProblems.push(
|
|
...inlineConfigResult.problems
|
|
.map(createLintingProblem)
|
|
.map(problem => {
|
|
problem.fatal = true;
|
|
return problem;
|
|
})
|
|
);
|
|
|
|
// next we need to verify information about the specified rules
|
|
const ruleValidator = new RuleValidator();
|
|
|
|
for (const { config: inlineConfig, node } of inlineConfigResult.configs) {
|
|
|
|
Object.keys(inlineConfig.rules).forEach(ruleId => {
|
|
const rule = getRuleFromConfig(ruleId, config);
|
|
const ruleValue = inlineConfig.rules[ruleId];
|
|
|
|
if (!rule) {
|
|
inlineConfigProblems.push(createLintingProblem({ ruleId, loc: node.loc }));
|
|
return;
|
|
}
|
|
|
|
try {
|
|
|
|
const ruleOptions = Array.isArray(ruleValue) ? ruleValue : [ruleValue];
|
|
|
|
assertIsRuleOptions(ruleId, ruleValue);
|
|
assertIsRuleSeverity(ruleId, ruleOptions[0]);
|
|
|
|
ruleValidator.validate({
|
|
plugins: config.plugins,
|
|
rules: {
|
|
[ruleId]: ruleOptions
|
|
}
|
|
});
|
|
mergedInlineConfig.rules[ruleId] = ruleValue;
|
|
} catch (err) {
|
|
|
|
let baseMessage = err.message.slice(
|
|
err.message.startsWith("Key \"rules\":")
|
|
? err.message.indexOf(":", 12) + 1
|
|
: err.message.indexOf(":") + 1
|
|
).trim();
|
|
|
|
if (err.messageTemplate) {
|
|
baseMessage += ` You passed "${ruleValue}".`;
|
|
}
|
|
|
|
inlineConfigProblems.push(createLintingProblem({
|
|
ruleId,
|
|
message: `Inline configuration for rule "${ruleId}" is invalid:\n\t${baseMessage}\n`,
|
|
loc: node.loc
|
|
}));
|
|
}
|
|
});
|
|
}
|
|
}
|
|
}
|
|
|
|
const commentDirectives = options.allowInlineConfig && !options.warnInlineConfig
|
|
? getDirectiveCommentsForFlatConfig(
|
|
sourceCode,
|
|
ruleId => getRuleFromConfig(ruleId, config)
|
|
)
|
|
: { 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,
|
|
languageOptions,
|
|
settings,
|
|
options.filename,
|
|
options.disableFixes,
|
|
slots.cwd,
|
|
providedOptions.physicalFilename
|
|
);
|
|
} catch (err) {
|
|
err.message += `\nOccurred while linting ${options.filename}`;
|
|
debug("An error occurred while traversing");
|
|
debug("Filename:", options.filename);
|
|
if (err.currentNode) {
|
|
const { line } = err.currentNode.loc.start;
|
|
|
|
debug("Line:", line);
|
|
err.message += `:${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({
|
|
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
|
|
});
|
|
}
|
|
|
|
/**
|
|
* 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 filename = options.filename || "<input>";
|
|
const filenameToExpose = normalizeFilename(filename);
|
|
const physicalFilename = options.physicalFilename || filenameToExpose;
|
|
const text = ensureText(textOrSourceCode);
|
|
const preprocess = options.preprocess || (rawText => [rawText]);
|
|
const postprocess = options.postprocess || (messagesList => messagesList.flat());
|
|
const filterCodeBlock =
|
|
options.filterCodeBlock ||
|
|
(blockFilename => blockFilename.endsWith(".js"));
|
|
const originalExtname = path.extname(filename);
|
|
|
|
let blocks;
|
|
|
|
try {
|
|
blocks = preprocess(text, filenameToExpose);
|
|
} catch (ex) {
|
|
|
|
// If the message includes a leading line number, strip it:
|
|
const message = `Preprocessing error: ${ex.message.replace(/^line \d+:/iu, "").trim()}`;
|
|
|
|
debug("%s\n%s", message, ex.stack);
|
|
|
|
return [
|
|
{
|
|
ruleId: null,
|
|
fatal: true,
|
|
severity: 2,
|
|
message,
|
|
line: ex.lineNumber,
|
|
column: ex.column,
|
|
nodeType: null
|
|
}
|
|
];
|
|
}
|
|
|
|
const messageLists = blocks.map((block, i) => {
|
|
debug("A code block was found: %o", block.filename || "(unnamed)");
|
|
|
|
// Keep the legacy behavior.
|
|
if (typeof block === "string") {
|
|
return this._verifyWithoutProcessors(block, config, options);
|
|
}
|
|
|
|
const blockText = block.text;
|
|
const blockName = path.join(filename, `${i}_${block.filename}`);
|
|
|
|
// Skip this block if filtered.
|
|
if (!filterCodeBlock(blockName, blockText)) {
|
|
debug("This code block was skipped.");
|
|
return [];
|
|
}
|
|
|
|
// Resolve configuration again if the file content or extension was changed.
|
|
if (configForRecursive && (text !== blockText || path.extname(blockName) !== originalExtname)) {
|
|
debug("Resolving configuration again because the file content or extension was changed.");
|
|
return this._verifyWithConfigArray(
|
|
blockText,
|
|
configForRecursive,
|
|
{ ...options, filename: blockName, physicalFilename }
|
|
);
|
|
}
|
|
|
|
// Does lint.
|
|
return this._verifyWithoutProcessors(
|
|
blockText,
|
|
config,
|
|
{ ...options, filename: blockName, physicalFilename }
|
|
);
|
|
});
|
|
|
|
return postprocess(messageLists, filenameToExpose);
|
|
}
|
|
|
|
/**
|
|
* 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 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 {Function | Rule} ruleModule Function from context to object mapping AST node types to event handlers
|
|
* @returns {void}
|
|
*/
|
|
defineRule(ruleId, ruleModule) {
|
|
assertEslintrcConfig(this);
|
|
internalSlotsMap.get(this).ruleMap.define(ruleId, ruleModule);
|
|
}
|
|
|
|
/**
|
|
* Defines many new linting rules.
|
|
* @param {Record<string, Function | 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;
|
|
const debugTextDescription = options && options.filename || `${text.slice(0, 10)}...`;
|
|
const shouldFix = options && typeof options.fix !== "undefined" ? options.fix : true;
|
|
|
|
/**
|
|
* 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.
|
|
*/
|
|
do {
|
|
passNumber++;
|
|
|
|
debug(`Linting code for ${debugTextDescription} (pass ${passNumber})`);
|
|
messages = this.verify(currentText, config, options);
|
|
|
|
debug(`Generating fixed text for ${debugTextDescription} (pass ${passNumber})`);
|
|
fixedResult = SourceCodeFixer.applyFixes(currentText, messages, shouldFix);
|
|
|
|
/*
|
|
* 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
|
|
currentText = fixedResult.output;
|
|
|
|
} 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) {
|
|
fixedResult.messages = this.verify(currentText, config, options);
|
|
}
|
|
|
|
// 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);
|
|
}
|
|
};
|