Current File : /var/www/html/node_modules/@eslint/eslintrc/lib/config-array/ignore-pattern.js
/**
* @fileoverview `IgnorePattern` class.
*
* `IgnorePattern` class has the set of glob patterns and the base path.
*
* It provides two static methods.
*
* - `IgnorePattern.createDefaultIgnore(cwd)`
* Create the default predicate function.
* - `IgnorePattern.createIgnore(ignorePatterns)`
* Create the predicate function from multiple `IgnorePattern` objects.
*
* It provides two properties and a method.
*
* - `patterns`
* The glob patterns that ignore to lint.
* - `basePath`
* The base path of the glob patterns. If absolute paths existed in the
* glob patterns, those are handled as relative paths to the base path.
* - `getPatternsRelativeTo(basePath)`
* Get `patterns` as modified for a given base path. It modifies the
* absolute paths in the patterns as prepending the difference of two base
* paths.
*
* `ConfigArrayFactory` creates `IgnorePattern` objects when it processes
* `ignorePatterns` properties.
*
* @author Toru Nagashima <https://github.com/mysticatea>
*/
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
import assert from "assert";
import path from "path";
import ignore from "ignore";
import debugOrig from "debug";
const debug = debugOrig("eslintrc:ignore-pattern");
/** @typedef {ReturnType<import("ignore").default>} Ignore */
//------------------------------------------------------------------------------
// Helpers
//------------------------------------------------------------------------------
/**
* Get the path to the common ancestor directory of given paths.
* @param {string[]} sourcePaths The paths to calculate the common ancestor.
* @returns {string} The path to the common ancestor directory.
*/
function getCommonAncestorPath(sourcePaths) {
let result = sourcePaths[0];
for (let i = 1; i < sourcePaths.length; ++i) {
const a = result;
const b = sourcePaths[i];
// Set the shorter one (it's the common ancestor if one includes the other).
result = a.length < b.length ? a : b;
// Set the common ancestor.
for (let j = 0, lastSepPos = 0; j < a.length && j < b.length; ++j) {
if (a[j] !== b[j]) {
result = a.slice(0, lastSepPos);
break;
}
if (a[j] === path.sep) {
lastSepPos = j;
}
}
}
let resolvedResult = result || path.sep;
// if Windows common ancestor is root of drive must have trailing slash to be absolute.
if (resolvedResult && resolvedResult.endsWith(":") && process.platform === "win32") {
resolvedResult += path.sep;
}
return resolvedResult;
}
/**
* Make relative path.
* @param {string} from The source path to get relative path.
* @param {string} to The destination path to get relative path.
* @returns {string} The relative path.
*/
function relative(from, to) {
const relPath = path.relative(from, to);
if (path.sep === "/") {
return relPath;
}
return relPath.split(path.sep).join("/");
}
/**
* Get the trailing slash if existed.
* @param {string} filePath The path to check.
* @returns {string} The trailing slash if existed.
*/
function dirSuffix(filePath) {
const isDir = (
filePath.endsWith(path.sep) ||
(process.platform === "win32" && filePath.endsWith("/"))
);
return isDir ? "/" : "";
}
const DefaultPatterns = Object.freeze(["/**/node_modules/*"]);
const DotPatterns = Object.freeze([".*", "!.eslintrc.*", "!../"]);
//------------------------------------------------------------------------------
// Public
//------------------------------------------------------------------------------
class IgnorePattern {
/**
* The default patterns.
* @type {string[]}
*/
static get DefaultPatterns() {
return DefaultPatterns;
}
/**
* Create the default predicate function.
* @param {string} cwd The current working directory.
* @returns {((filePath:string, dot:boolean) => boolean) & {basePath:string; patterns:string[]}}
* The preficate function.
* The first argument is an absolute path that is checked.
* The second argument is the flag to not ignore dotfiles.
* If the predicate function returned `true`, it means the path should be ignored.
*/
static createDefaultIgnore(cwd) {
return this.createIgnore([new IgnorePattern(DefaultPatterns, cwd)]);
}
/**
* Create the predicate function from multiple `IgnorePattern` objects.
* @param {IgnorePattern[]} ignorePatterns The list of ignore patterns.
* @returns {((filePath:string, dot?:boolean) => boolean) & {basePath:string; patterns:string[]}}
* The preficate function.
* The first argument is an absolute path that is checked.
* The second argument is the flag to not ignore dotfiles.
* If the predicate function returned `true`, it means the path should be ignored.
*/
static createIgnore(ignorePatterns) {
debug("Create with: %o", ignorePatterns);
const basePath = getCommonAncestorPath(ignorePatterns.map(p => p.basePath));
const patterns = [].concat(
...ignorePatterns.map(p => p.getPatternsRelativeTo(basePath))
);
const ig = ignore().add([...DotPatterns, ...patterns]);
const dotIg = ignore().add(patterns);
debug(" processed: %o", { basePath, patterns });
return Object.assign(
(filePath, dot = false) => {
assert(path.isAbsolute(filePath), "'filePath' should be an absolute path.");
const relPathRaw = relative(basePath, filePath);
const relPath = relPathRaw && (relPathRaw + dirSuffix(filePath));
const adoptedIg = dot ? dotIg : ig;
const result = relPath !== "" && adoptedIg.ignores(relPath);
debug("Check", { filePath, dot, relativePath: relPath, result });
return result;
},
{ basePath, patterns }
);
}
/**
* Initialize a new `IgnorePattern` instance.
* @param {string[]} patterns The glob patterns that ignore to lint.
* @param {string} basePath The base path of `patterns`.
*/
constructor(patterns, basePath) {
assert(path.isAbsolute(basePath), "'basePath' should be an absolute path.");
/**
* The glob patterns that ignore to lint.
* @type {string[]}
*/
this.patterns = patterns;
/**
* The base path of `patterns`.
* @type {string}
*/
this.basePath = basePath;
/**
* If `true` then patterns which don't start with `/` will match the paths to the outside of `basePath`. Defaults to `false`.
*
* It's set `true` for `.eslintignore`, `package.json`, and `--ignore-path` for backward compatibility.
* It's `false` as-is for `ignorePatterns` property in config files.
* @type {boolean}
*/
this.loose = false;
}
/**
* Get `patterns` as modified for a given base path. It modifies the
* absolute paths in the patterns as prepending the difference of two base
* paths.
* @param {string} newBasePath The base path.
* @returns {string[]} Modifired patterns.
*/
getPatternsRelativeTo(newBasePath) {
assert(path.isAbsolute(newBasePath), "'newBasePath' should be an absolute path.");
const { basePath, loose, patterns } = this;
if (newBasePath === basePath) {
return patterns;
}
const prefix = `/${relative(newBasePath, basePath)}`;
return patterns.map(pattern => {
const negative = pattern.startsWith("!");
const head = negative ? "!" : "";
const body = negative ? pattern.slice(1) : pattern;
if (body.startsWith("/") || body.startsWith("../")) {
return `${head}${prefix}${body}`;
}
return loose ? pattern : `${head}${prefix}/**/${body}`;
});
}
}
export { IgnorePattern };
Mini Shell