mirror of
https://github.com/joelwmale/webhook-action.git
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224 lines
6.7 KiB
JavaScript
224 lines
6.7 KiB
JavaScript
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/**
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* @fileoverview `OverrideTester` class.
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*
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* `OverrideTester` class handles `files` property and `excludedFiles` property
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* of `overrides` config.
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*
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* It provides one method.
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*
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* - `test(filePath)`
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* Test if a file path matches the pair of `files` property and
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* `excludedFiles` property. The `filePath` argument must be an absolute
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* path.
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*
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* `ConfigArrayFactory` creates `OverrideTester` objects when it processes
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* `overrides` properties.
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*
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* @author Toru Nagashima <https://github.com/mysticatea>
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*/
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"use strict";
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const assert = require("assert");
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const path = require("path");
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const util = require("util");
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const { Minimatch } = require("minimatch");
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const minimatchOpts = { dot: true, matchBase: true };
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/**
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* @typedef {Object} Pattern
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* @property {InstanceType<Minimatch>[] | null} includes The positive matchers.
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* @property {InstanceType<Minimatch>[] | null} excludes The negative matchers.
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*/
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/**
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* Normalize a given pattern to an array.
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* @param {string|string[]|undefined} patterns A glob pattern or an array of glob patterns.
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* @returns {string[]|null} Normalized patterns.
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* @private
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*/
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function normalizePatterns(patterns) {
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if (Array.isArray(patterns)) {
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return patterns.filter(Boolean);
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}
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if (typeof patterns === "string" && patterns) {
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return [patterns];
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}
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return [];
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}
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/**
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* Create the matchers of given patterns.
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* @param {string[]} patterns The patterns.
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* @returns {InstanceType<Minimatch>[] | null} The matchers.
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*/
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function toMatcher(patterns) {
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if (patterns.length === 0) {
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return null;
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}
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return patterns.map(pattern => {
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if (/^\.[/\\]/u.test(pattern)) {
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return new Minimatch(
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pattern.slice(2),
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// `./*.js` should not match with `subdir/foo.js`
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{ ...minimatchOpts, matchBase: false }
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);
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}
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return new Minimatch(pattern, minimatchOpts);
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});
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}
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/**
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* Convert a given matcher to string.
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* @param {Pattern} matchers The matchers.
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* @returns {string} The string expression of the matcher.
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*/
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function patternToJson({ includes, excludes }) {
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return {
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includes: includes && includes.map(m => m.pattern),
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excludes: excludes && excludes.map(m => m.pattern)
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};
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}
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/**
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* The class to test given paths are matched by the patterns.
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*/
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class OverrideTester {
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/**
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* Create a tester with given criteria.
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* If there are no criteria, returns `null`.
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* @param {string|string[]} files The glob patterns for included files.
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* @param {string|string[]} excludedFiles The glob patterns for excluded files.
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* @param {string} basePath The path to the base directory to test paths.
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* @returns {OverrideTester|null} The created instance or `null`.
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*/
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static create(files, excludedFiles, basePath) {
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const includePatterns = normalizePatterns(files);
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const excludePatterns = normalizePatterns(excludedFiles);
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let endsWithWildcard = false;
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if (includePatterns.length === 0) {
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return null;
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}
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// Rejects absolute paths or relative paths to parents.
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for (const pattern of includePatterns) {
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if (path.isAbsolute(pattern) || pattern.includes("..")) {
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throw new Error(`Invalid override pattern (expected relative path not containing '..'): ${pattern}`);
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}
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if (pattern.endsWith("*")) {
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endsWithWildcard = true;
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}
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}
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for (const pattern of excludePatterns) {
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if (path.isAbsolute(pattern) || pattern.includes("..")) {
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throw new Error(`Invalid override pattern (expected relative path not containing '..'): ${pattern}`);
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}
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}
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const includes = toMatcher(includePatterns);
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const excludes = toMatcher(excludePatterns);
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return new OverrideTester(
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[{ includes, excludes }],
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basePath,
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endsWithWildcard
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);
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}
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/**
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* Combine two testers by logical and.
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* If either of the testers was `null`, returns the other tester.
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* The `basePath` property of the two must be the same value.
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* @param {OverrideTester|null} a A tester.
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* @param {OverrideTester|null} b Another tester.
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* @returns {OverrideTester|null} Combined tester.
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*/
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static and(a, b) {
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if (!b) {
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return a && new OverrideTester(
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a.patterns,
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a.basePath,
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a.endsWithWildcard
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);
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}
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if (!a) {
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return new OverrideTester(
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b.patterns,
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b.basePath,
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b.endsWithWildcard
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);
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}
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assert.strictEqual(a.basePath, b.basePath);
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return new OverrideTester(
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a.patterns.concat(b.patterns),
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a.basePath,
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a.endsWithWildcard || b.endsWithWildcard
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);
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}
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/**
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* Initialize this instance.
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* @param {Pattern[]} patterns The matchers.
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* @param {string} basePath The base path.
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* @param {boolean} endsWithWildcard If `true` then a pattern ends with `*`.
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*/
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constructor(patterns, basePath, endsWithWildcard = false) {
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/** @type {Pattern[]} */
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this.patterns = patterns;
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/** @type {string} */
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this.basePath = basePath;
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/** @type {boolean} */
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this.endsWithWildcard = endsWithWildcard;
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}
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/**
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* Test if a given path is matched or not.
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* @param {string} filePath The absolute path to the target file.
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* @returns {boolean} `true` if the path was matched.
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*/
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test(filePath) {
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if (typeof filePath !== "string" || !path.isAbsolute(filePath)) {
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throw new Error(`'filePath' should be an absolute path, but got ${filePath}.`);
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}
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const relativePath = path.relative(this.basePath, filePath);
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return this.patterns.every(({ includes, excludes }) => (
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(!includes || includes.some(m => m.match(relativePath))) &&
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(!excludes || !excludes.some(m => m.match(relativePath)))
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));
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}
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// eslint-disable-next-line jsdoc/require-description
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/**
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* @returns {Object} a JSON compatible object.
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*/
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toJSON() {
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if (this.patterns.length === 1) {
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return {
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...patternToJson(this.patterns[0]),
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basePath: this.basePath
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};
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}
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return {
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AND: this.patterns.map(patternToJson),
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basePath: this.basePath
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};
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}
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// eslint-disable-next-line jsdoc/require-description
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/**
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* @returns {Object} an object to display by `console.log()`.
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*/
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[util.inspect.custom]() {
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return this.toJSON();
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}
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}
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module.exports = { OverrideTester };
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