812 lines
24 KiB
Plaintext
812 lines
24 KiB
Plaintext
/**
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* @fileoverview Shared types for ESLint Core.
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*/
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import { JSONSchema4 } from "json-schema";
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/**
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* Represents an error inside of a file.
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*/
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export interface FileError {
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message: string;
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line: number;
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column: number;
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endLine?: number;
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endColumn?: number;
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}
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/**
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* Represents a problem found in a file.
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*/
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export interface FileProblem {
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ruleId: string | null;
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message: string;
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loc: SourceLocation;
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}
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/**
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* Represents the start and end coordinates of a node inside the source.
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*/
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export interface SourceLocation {
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start: Position;
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end: Position;
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}
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/**
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* Represents the start and end coordinates of a node inside the source with an offset.
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*/
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export interface SourceLocationWithOffset {
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start: PositionWithOffset;
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end: PositionWithOffset;
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}
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/**
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* Represents a location coordinate inside the source. ESLint-style formats
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* have just `line` and `column` while others may have `offset` as well.
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*/
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export interface Position {
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line: number;
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column: number;
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}
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/**
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* Represents a location coordinate inside the source with an offset.
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*/
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export interface PositionWithOffset extends Position {
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offset: number;
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}
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/**
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* Represents a range of characters in the source.
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*/
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export type SourceRange = [number, number];
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/**
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* What the rule is responsible for finding:
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* - `problem` means the rule has noticed a potential error.
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* - `suggestion` means the rule suggests an alternate or better approach.
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* - `layout` means the rule is looking at spacing, indentation, etc.
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*/
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export type RuleType = "problem" | "suggestion" | "layout";
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/**
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* The type of fix the rule can provide:
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* - `code` means the rule can fix syntax.
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* - `whitespace` means the rule can fix spacing and indentation.
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*/
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export type RuleFixType = "code" | "whitespace";
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/**
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* An object containing visitor information for a rule. Each method is either the
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* name of a node type or a selector, or is a method that will be called at specific
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* times during the traversal.
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*/
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export type RuleVisitor = Record<string, ((...args: any[]) => void) | undefined>;
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/**
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* Rule meta information used for documentation.
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*/
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export interface RulesMetaDocs {
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/**
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* A short description of the rule.
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*/
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description?: string | undefined;
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/**
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* The URL to the documentation for the rule.
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*/
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url?: string | undefined;
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/**
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* The category the rule falls under.
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* @deprecated No longer used.
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*/
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category?: string | undefined;
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/**
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* Indicates if the rule is generally recommended for all users.
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*/
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recommended?: boolean | undefined;
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/**
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* Indicates if the rule is frozen (no longer accepting feature requests).
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*/
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frozen?: boolean | undefined;
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}
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/**
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* Meta information about a rule.
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*/
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export interface RulesMeta<MessageIds extends string = string, RuleOptions = unknown[], ExtRuleDocs = unknown> {
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/**
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* Properties that are used when documenting the rule.
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*/
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docs?: (RulesMetaDocs & ExtRuleDocs) | undefined;
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/**
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* The type of rule.
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*/
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type?: RuleType | undefined;
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/**
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* The schema for the rule options. Required if the rule has options.
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*/
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schema?: JSONSchema4 | JSONSchema4[] | false | undefined;
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/**
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* Any default options to be recursively merged on top of any user-provided options.
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**/
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defaultOptions?: RuleOptions;
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/**
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* The messages that the rule can report.
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*/
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messages?: Record<MessageIds, string>;
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/**
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* Indicates whether the rule has been deprecated or provides additional metadata about the deprecation. Omit if not deprecated.
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*/
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deprecated?: boolean | DeprecatedInfo | undefined;
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/**
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* @deprecated Use deprecated.replacedBy instead.
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* The name of the rule(s) this rule was replaced by, if it was deprecated.
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*/
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replacedBy?: readonly string[] | undefined;
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/**
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* Indicates if the rule is fixable, and if so, what type of fix it provides.
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*/
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fixable?: RuleFixType | undefined;
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/**
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* Indicates if the rule may provide suggestions.
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*/
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hasSuggestions?: boolean | undefined;
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/**
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* The language the rule is intended to lint.
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*/
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language?: string;
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/**
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* The dialects of `language` that the rule is intended to lint.
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*/
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dialects?: string[];
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}
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/**
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* Provides additional metadata about a deprecation.
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*/
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export interface DeprecatedInfo {
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/**
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* General message presented to the user, e.g. for the key rule why the rule
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* is deprecated or for info how to replace the rule.
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*/
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message?: string;
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/**
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* URL to more information about this deprecation in general.
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*/
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url?: string;
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/**
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* An empty array explicitly states that there is no replacement.
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*/
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replacedBy?: ReplacedByInfo[];
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/**
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* The package version since when the rule is deprecated (should use full
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* semver without a leading "v").
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*/
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deprecatedSince?: string;
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/**
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* The estimated version when the rule is removed (probably the next major
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* version). null means the rule is "frozen" (will be available but will not
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* be changed).
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*/
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availableUntil?: string | null;
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}
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/**
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* Provides metadata about a replacement
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*/
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export interface ReplacedByInfo {
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/**
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* General message presented to the user, e.g. how to replace the rule
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*/
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message?: string;
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/**
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* URL to more information about this replacement in general
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*/
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url?: string;
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/**
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* Name should be "eslint" if the replacement is an ESLint core rule. Omit
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* the property if the replacement is in the same plugin.
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*/
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plugin?: ExternalSpecifier;
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/**
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* Name and documentation of the replacement rule
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*/
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rule?: ExternalSpecifier;
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}
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/**
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* Specifies the name and url of an external resource. At least one property
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* should be set.
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*/
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export interface ExternalSpecifier {
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/**
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* Name of the referenced plugin / rule.
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*/
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name?: string;
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/**
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* URL pointing to documentation for the plugin / rule.
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*/
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url?: string;
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}
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/**
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* Generic type for `RuleContext`.
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*/
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export interface RuleContextTypeOptions {
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LangOptions: LanguageOptions;
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Code: SourceCode;
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RuleOptions: unknown[];
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Node: unknown;
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MessageIds: string;
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}
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/**
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* Represents the context object that is passed to a rule. This object contains
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* information about the current state of the linting process and is the rule's
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* view into the outside world.
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*/
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export interface RuleContext<Options extends RuleContextTypeOptions = RuleContextTypeOptions> {
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/**
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* The current working directory for the session.
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*/
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cwd: string;
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/**
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* Returns the current working directory for the session.
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* @deprecated Use `cwd` instead.
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*/
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getCwd(): string;
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/**
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* The filename of the file being linted.
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*/
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filename: string;
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/**
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* Returns the filename of the file being linted.
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* @deprecated Use `filename` instead.
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*/
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getFilename(): string;
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/**
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* The physical filename of the file being linted.
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*/
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physicalFilename: string;
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/**
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* Returns the physical filename of the file being linted.
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* @deprecated Use `physicalFilename` instead.
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*/
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getPhysicalFilename(): string;
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/**
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* The source code object that the rule is running on.
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*/
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sourceCode: Options["Code"];
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/**
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* Returns the source code object that the rule is running on.
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* @deprecated Use `sourceCode` instead.
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*/
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getSourceCode(): Options["Code"];
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/**
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* Shared settings for the configuration.
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*/
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settings: SettingsConfig;
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/**
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* Parser-specific options for the configuration.
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* @deprecated Use `languageOptions.parserOptions` instead.
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*/
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parserOptions: Record<string, unknown>;
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/**
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* The language options for the configuration.
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*/
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languageOptions: Options["LangOptions"];
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/**
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* The CommonJS path to the parser used while parsing this file.
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* @deprecated No longer used.
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*/
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parserPath: string | undefined;
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/**
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* The rule ID.
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*/
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id: string;
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/**
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* The rule's configured options.
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*/
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options: Options["RuleOptions"];
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/**
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* The report function that the rule should use to report problems.
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* @param violation The violation to report.
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*/
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report(violation: ViolationReport<Options["Node"], Options["MessageIds"]>): void;
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}
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/**
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* Manager of text edits for a rule fix.
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*/
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export interface RuleTextEditor<EditableSyntaxElement = unknown> {
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/**
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* Inserts text after the specified node or token.
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* @param syntaxElement The node or token to insert after.
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* @param text The edit to insert after the node or token.
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*/
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insertTextAfter(syntaxElement: EditableSyntaxElement, text: string): RuleTextEdit;
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/**
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* Inserts text after the specified range.
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* @param range The range to insert after.
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* @param text The edit to insert after the range.
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*/
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insertTextAfterRange(range: SourceRange, text: string): RuleTextEdit;
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/**
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* Inserts text before the specified node or token.
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* @param syntaxElement A syntax element with location information to insert before.
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* @param text The edit to insert before the node or token.
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*/
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insertTextBefore(syntaxElement: EditableSyntaxElement, text: string): RuleTextEdit;
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/**
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* Inserts text before the specified range.
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* @param range The range to insert before.
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* @param text The edit to insert before the range.
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*/
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insertTextBeforeRange(range: SourceRange, text: string): RuleTextEdit;
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/**
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* Removes the specified node or token.
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* @param syntaxElement A syntax element with location information to remove.
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* @returns The edit to remove the node or token.
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*/
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remove(syntaxElement: EditableSyntaxElement): RuleTextEdit;
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/**
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* Removes the specified range.
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* @param range The range to remove.
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* @returns The edit to remove the range.
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*/
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removeRange(range: SourceRange): RuleTextEdit;
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/**
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* Replaces the specified node or token with the given text.
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* @param syntaxElement A syntax element with location information to replace.
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* @param text The text to replace the node or token with.
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* @returns The edit to replace the node or token.
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*/
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replaceText(syntaxElement: EditableSyntaxElement, text: string): RuleTextEdit;
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/**
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* Replaces the specified range with the given text.
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* @param range The range to replace.
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* @param text The text to replace the range with.
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* @returns The edit to replace the range.
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*/
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replaceTextRange(range: SourceRange, text: string): RuleTextEdit;
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}
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/**
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* Represents a fix for a rule violation implemented as a text edit.
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*/
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export interface RuleTextEdit {
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/**
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* The range to replace.
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*/
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range: SourceRange;
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/**
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* The text to insert.
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*/
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text: string;
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}
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/**
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* Fixes a violation.
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* @param fixer The text editor to apply the fix.
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* @returns The fix(es) for the violation.
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*/
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type RuleFixer = (fixer: RuleTextEditor) => RuleTextEdit | Iterable<RuleTextEdit> | null;
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interface ViolationReportBase {
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/**
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* The type of node that the violation is for.
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* @deprecated May be removed in the future.
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*/
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nodeType?: string | undefined;
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/**
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* The data to insert into the message.
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*/
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data?: Record<string, string> | undefined;
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/**
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* The fix to be applied for the violation.
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*/
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fix?: RuleFixer | null | undefined;
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/**
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* An array of suggested fixes for the problem. These fixes may change the
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* behavior of the code, so they are not applied automatically.
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*/
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suggest?: SuggestedEdit[] | null | undefined;
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}
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type ViolationMessage<MessageIds = string> = {
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message: string;
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} | {
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messageId: MessageIds;
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};
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type ViolationLocation<Node> = {
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loc: SourceLocation | Position;
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} | {
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node: Node;
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};
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export type ViolationReport<Node = unknown, MessageIds = string> = ViolationReportBase & ViolationMessage<MessageIds> & ViolationLocation<Node>;
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interface SuggestedEditBase {
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/**
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* The data to insert into the message.
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*/
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data?: Record<string, string> | undefined;
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/**
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* The fix to be applied for the suggestion.
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*/
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fix?: RuleFixer | null | undefined;
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}
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type SuggestionMessage = {
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desc: string;
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} | {
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messageId: string;
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};
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/**
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* A suggested edit for a rule violation.
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*/
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export type SuggestedEdit = SuggestedEditBase & SuggestionMessage;
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/**
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* Generic options for the `RuleDefinition` type.
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*/
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export interface RuleDefinitionTypeOptions {
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LangOptions: LanguageOptions;
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Code: SourceCode;
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RuleOptions: unknown[];
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Visitor: RuleVisitor;
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Node: unknown;
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MessageIds: string;
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ExtRuleDocs: unknown;
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}
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/**
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* The definition of an ESLint rule.
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*/
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export interface RuleDefinition<Options extends RuleDefinitionTypeOptions = RuleDefinitionTypeOptions> {
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/**
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* The meta information for the rule.
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*/
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meta?: RulesMeta<Options["MessageIds"], Options["RuleOptions"], Options["ExtRuleDocs"]>;
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/**
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* Creates the visitor that ESLint uses to apply the rule during traversal.
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* @param context The rule context.
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* @returns The rule visitor.
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*/
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create(context: RuleContext<{
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LangOptions: Options["LangOptions"];
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Code: Options["Code"];
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RuleOptions: Options["RuleOptions"];
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Node: Options["Node"];
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MessageIds: Options["MessageIds"];
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}>): Options["Visitor"];
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}
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/**
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* The human readable severity level used in a configuration.
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*/
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export type SeverityName = "off" | "warn" | "error";
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/**
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* The numeric severity level for a rule.
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*
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* - `0` means off.
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* - `1` means warn.
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* - `2` means error.
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*/
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export type SeverityLevel = 0 | 1 | 2;
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/**
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* The severity of a rule in a configuration.
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*/
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export type Severity = SeverityName | SeverityLevel;
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/**
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* Represents the configuration options for the core linter.
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*/
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export interface LinterOptionsConfig {
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/**
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* Indicates whether or not inline configuration is evaluated.
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*/
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noInlineConfig?: boolean;
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/**
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* Indicates what to do when an unused disable directive is found.
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*/
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reportUnusedDisableDirectives?: boolean | Severity;
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}
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/**
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* Shared settings that are accessible from within plugins.
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*/
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export type SettingsConfig = Record<string, unknown>;
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/**
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* The configuration for a rule.
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*/
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export type RuleConfig = Severity | [Severity, ...unknown[]];
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/**
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* A collection of rules and their configurations.
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*/
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export type RulesConfig = Record<string, RuleConfig>;
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/**
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* Generic options for the `Language` type.
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*/
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export interface LanguageTypeOptions {
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LangOptions: LanguageOptions;
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Code: SourceCode;
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RootNode: unknown;
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Node: unknown;
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}
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/**
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* Represents a plugin language.
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*/
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export interface Language<Options extends LanguageTypeOptions = {
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LangOptions: LanguageOptions;
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Code: SourceCode;
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RootNode: unknown;
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Node: unknown;
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}> {
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/**
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* Indicates how ESLint should read the file.
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*/
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fileType: "text";
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/**
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* First line number returned from the parser (text mode only).
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*/
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lineStart: 0 | 1;
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/**
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* First column number returned from the parser (text mode only).
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*/
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columnStart: 0 | 1;
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/**
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* The property to read the node type from. Used in selector querying.
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*/
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nodeTypeKey: string;
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/**
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* The traversal path that tools should take when evaluating the AST
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*/
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visitorKeys?: Record<string, string[]>;
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/**
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* Default language options. User-defined options are merged with this object.
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*/
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defaultLanguageOptions?: LanguageOptions;
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/**
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* Validates languageOptions for this language.
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*/
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validateLanguageOptions(languageOptions: Options["LangOptions"]): void;
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/**
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* Normalizes languageOptions for this language.
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*/
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normalizeLanguageOptions?(languageOptions: Options["LangOptions"]): Options["LangOptions"];
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/**
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* Helper for esquery that allows languages to match nodes against
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* class. esquery currently has classes like `function` that will
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* match all the various function nodes. This method allows languages
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* to implement similar shorthands.
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*/
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matchesSelectorClass?(className: string, node: Options["Node"], ancestry: Options["Node"][]): boolean;
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/**
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* Parses the given file input into its component parts. This file should not
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* throws errors for parsing errors but rather should return any parsing
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* errors as parse of the ParseResult object.
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*/
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parse(file: File, context: LanguageContext<Options["LangOptions"]>): ParseResult<Options["RootNode"]>;
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/**
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* Creates SourceCode object that ESLint uses to work with a file.
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*/
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createSourceCode(file: File, input: OkParseResult<Options["RootNode"]>, context: LanguageContext<Options["LangOptions"]>): Options["Code"];
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}
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/**
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* Plugin-defined options for the language.
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*/
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export type LanguageOptions = Record<string, unknown>;
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/**
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* The context object that is passed to the language plugin methods.
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|
*/
|
|
export interface LanguageContext<LangOptions = LanguageOptions> {
|
|
languageOptions: LangOptions;
|
|
}
|
|
/**
|
|
* Represents a file read by ESLint.
|
|
*/
|
|
export interface File {
|
|
/**
|
|
* The path that ESLint uses for this file. May be a virtual path
|
|
* if it was returned by a processor.
|
|
*/
|
|
path: string;
|
|
/**
|
|
* The path to the file on disk. This always maps directly to a file
|
|
* regardless of whether it was returned from a processor.
|
|
*/
|
|
physicalPath: string;
|
|
/**
|
|
* Indicates if the original source contained a byte-order marker.
|
|
* ESLint strips the BOM from the `body`, but this info is needed
|
|
* to correctly apply autofixing.
|
|
*/
|
|
bom: boolean;
|
|
/**
|
|
* The body of the file to parse.
|
|
*/
|
|
body: string | Uint8Array;
|
|
}
|
|
/**
|
|
* Represents the successful result of parsing a file.
|
|
*/
|
|
export interface OkParseResult<RootNode = unknown> {
|
|
/**
|
|
* Indicates if the parse was successful. If true, the parse was successful
|
|
* and ESLint should continue on to create a SourceCode object and run rules;
|
|
* if false, ESLint should just report the error(s) without doing anything
|
|
* else.
|
|
*/
|
|
ok: true;
|
|
/**
|
|
* The abstract syntax tree created by the parser. (only when ok: true)
|
|
*/
|
|
ast: RootNode;
|
|
/**
|
|
* Any additional data that the parser wants to provide.
|
|
*/
|
|
[key: string]: any;
|
|
}
|
|
/**
|
|
* Represents the unsuccessful result of parsing a file.
|
|
*/
|
|
export interface NotOkParseResult {
|
|
/**
|
|
* Indicates if the parse was successful. If true, the parse was successful
|
|
* and ESLint should continue on to create a SourceCode object and run rules;
|
|
* if false, ESLint should just report the error(s) without doing anything
|
|
* else.
|
|
*/
|
|
ok: false;
|
|
/**
|
|
* Any parsing errors, whether fatal or not. (only when ok: false)
|
|
*/
|
|
errors: FileError[];
|
|
/**
|
|
* Any additional data that the parser wants to provide.
|
|
*/
|
|
[key: string]: any;
|
|
}
|
|
export type ParseResult<RootNode = unknown> = OkParseResult<RootNode> | NotOkParseResult;
|
|
/**
|
|
* Represents inline configuration found in the source code.
|
|
*/
|
|
interface InlineConfigElement {
|
|
/**
|
|
* The location of the inline config element.
|
|
*/
|
|
loc: SourceLocation;
|
|
/**
|
|
* The interpreted configuration from the inline config element.
|
|
*/
|
|
config: {
|
|
rules: RulesConfig;
|
|
};
|
|
}
|
|
/**
|
|
* Generic options for the `SourceCodeBase` type.
|
|
*/
|
|
interface SourceCodeBaseTypeOptions {
|
|
LangOptions: LanguageOptions;
|
|
RootNode: unknown;
|
|
SyntaxElementWithLoc: unknown;
|
|
ConfigNode: unknown;
|
|
}
|
|
/**
|
|
* Represents the basic interface for a source code object.
|
|
*/
|
|
interface SourceCodeBase<Options extends SourceCodeBaseTypeOptions = {
|
|
LangOptions: LanguageOptions;
|
|
RootNode: unknown;
|
|
SyntaxElementWithLoc: unknown;
|
|
ConfigNode: unknown;
|
|
}> {
|
|
/**
|
|
* Root of the AST.
|
|
*/
|
|
ast: Options["RootNode"];
|
|
/**
|
|
* The traversal path that tools should take when evaluating the AST.
|
|
* When present, this overrides the `visitorKeys` on the language for
|
|
* just this source code object.
|
|
*/
|
|
visitorKeys?: Record<string, string[]>;
|
|
/**
|
|
* Retrieves the equivalent of `loc` for a given node or token.
|
|
* @param syntaxElement The node or token to get the location for.
|
|
* @returns The location of the node or token.
|
|
*/
|
|
getLoc(syntaxElement: Options["SyntaxElementWithLoc"]): SourceLocation;
|
|
/**
|
|
* Retrieves the equivalent of `range` for a given node or token.
|
|
* @param syntaxElement The node or token to get the range for.
|
|
* @returns The range of the node or token.
|
|
*/
|
|
getRange(syntaxElement: Options["SyntaxElementWithLoc"]): SourceRange;
|
|
/**
|
|
* Traversal of AST.
|
|
*/
|
|
traverse(): Iterable<TraversalStep>;
|
|
/**
|
|
* Applies language options passed in from the ESLint core.
|
|
*/
|
|
applyLanguageOptions?(languageOptions: Options["LangOptions"]): void;
|
|
/**
|
|
* Return all of the inline areas where ESLint should be disabled/enabled
|
|
* along with any problems found in evaluating the directives.
|
|
*/
|
|
getDisableDirectives?(): {
|
|
directives: Directive[];
|
|
problems: FileProblem[];
|
|
};
|
|
/**
|
|
* Returns an array of all inline configuration nodes found in the
|
|
* source code.
|
|
*/
|
|
getInlineConfigNodes?(): Options["ConfigNode"][];
|
|
/**
|
|
* Applies configuration found inside of the source code. This method is only
|
|
* called when ESLint is running with inline configuration allowed.
|
|
*/
|
|
applyInlineConfig?(): {
|
|
configs: InlineConfigElement[];
|
|
problems: FileProblem[];
|
|
};
|
|
/**
|
|
* Called by ESLint core to indicate that it has finished providing
|
|
* information. We now add in all the missing variables and ensure that
|
|
* state-changing methods cannot be called by rules.
|
|
* @returns {void}
|
|
*/
|
|
finalize?(): void;
|
|
}
|
|
/**
|
|
* Represents the source of a text file being linted.
|
|
*/
|
|
export interface TextSourceCode<Options extends SourceCodeBaseTypeOptions = {
|
|
LangOptions: LanguageOptions;
|
|
RootNode: unknown;
|
|
SyntaxElementWithLoc: unknown;
|
|
ConfigNode: unknown;
|
|
}> extends SourceCodeBase<Options> {
|
|
/**
|
|
* The body of the file that you'd like rule developers to access.
|
|
*/
|
|
text: string;
|
|
}
|
|
/**
|
|
* Represents the source of a binary file being linted.
|
|
*/
|
|
export interface BinarySourceCode<Options extends SourceCodeBaseTypeOptions = {
|
|
LangOptions: LanguageOptions;
|
|
RootNode: unknown;
|
|
SyntaxElementWithLoc: unknown;
|
|
ConfigNode: unknown;
|
|
}> extends SourceCodeBase<Options> {
|
|
/**
|
|
* The body of the file that you'd like rule developers to access.
|
|
*/
|
|
body: Uint8Array;
|
|
}
|
|
export type SourceCode<Options extends SourceCodeBaseTypeOptions = {
|
|
LangOptions: LanguageOptions;
|
|
RootNode: unknown;
|
|
SyntaxElementWithLoc: unknown;
|
|
ConfigNode: unknown;
|
|
}> = TextSourceCode<Options> | BinarySourceCode<Options>;
|
|
/**
|
|
* Represents a traversal step visiting the AST.
|
|
*/
|
|
export interface VisitTraversalStep {
|
|
kind: 1;
|
|
target: unknown;
|
|
phase: 1 | 2;
|
|
args: unknown[];
|
|
}
|
|
/**
|
|
* Represents a traversal step calling a function.
|
|
*/
|
|
export interface CallTraversalStep {
|
|
kind: 2;
|
|
target: string;
|
|
phase?: string;
|
|
args: unknown[];
|
|
}
|
|
export type TraversalStep = VisitTraversalStep | CallTraversalStep;
|
|
/**
|
|
* The type of disable directive. This determines how ESLint will disable rules.
|
|
*/
|
|
export type DirectiveType = "disable" | "enable" | "disable-line" | "disable-next-line";
|
|
/**
|
|
* Represents a disable directive.
|
|
*/
|
|
export interface Directive {
|
|
/**
|
|
* The type of directive.
|
|
*/
|
|
type: DirectiveType;
|
|
/**
|
|
* The node of the directive. May be in the AST or a comment/token.
|
|
*/
|
|
node: unknown;
|
|
/**
|
|
* The value of the directive.
|
|
*/
|
|
value: string;
|
|
/**
|
|
* The justification for the directive.
|
|
*/
|
|
justification?: string;
|
|
}
|
|
export {};
|