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221 lines
9.2 KiB
221 lines
9.2 KiB
2 months ago
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"use strict";
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// Copyright (c) Microsoft Corporation. All rights reserved. Licensed under the MIT license.
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// See LICENSE in the project root for license information.
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var __importDefault = (this && this.__importDefault) || function (mod) {
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return (mod && mod.__esModule) ? mod : { "default": mod };
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.generatePatchedLinterJsFileIfDoesNotExist = void 0;
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const fs_1 = __importDefault(require("fs"));
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const constants_1 = require("./constants");
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/**
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* Dynamically generate file to properly patch many versions of ESLint
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* @param inputFilePath - Must be an iteration of https://github.com/eslint/eslint/blob/main/lib/linter/linter.js
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* @param outputFilePath - Some small changes to linter.js
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*/
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function generatePatchedLinterJsFileIfDoesNotExist(inputFilePath, outputFilePath) {
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const generateEnvVarValue = process.env[constants_1.ESLINT_BULK_FORCE_REGENERATE_PATCH_ENV_VAR_NAME];
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if (generateEnvVarValue !== 'true' && generateEnvVarValue !== '1' && fs_1.default.existsSync(outputFilePath)) {
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return;
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}
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const inputFile = fs_1.default.readFileSync(inputFilePath).toString();
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let inputIndex = 0;
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/**
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* Extract from the stream until marker is reached. When matching marker,
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* ignore whitespace in the stream and in the marker. Return the extracted text.
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*/
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function scanUntilMarker(marker) {
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const trimmedMarker = marker.replace(/\s/g, '');
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let output = '';
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let trimmed = '';
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while (inputIndex < inputFile.length) {
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const char = inputFile[inputIndex++];
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output += char;
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if (!/^\s$/.test(char)) {
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trimmed += char;
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}
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if (trimmed.endsWith(trimmedMarker)) {
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return output;
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}
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}
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throw new Error('Unexpected end of input while looking for ' + JSON.stringify(marker));
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}
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function scanUntilNewline() {
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let output = '';
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while (inputIndex < inputFile.length) {
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const char = inputFile[inputIndex++];
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output += char;
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if (char === '\n') {
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return output;
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}
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}
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throw new Error('Unexpected end of input while looking for new line');
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}
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function scanUntilEnd() {
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const output = inputFile.substring(inputIndex);
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inputIndex = inputFile.length;
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return output;
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}
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/**
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* Returns index of next public method
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* @param fromIndex - index of inputFile to search if public method still exists
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* @returns -1 if public method does not exist or index of next public method
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*/
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function getIndexOfNextPublicMethod(fromIndex) {
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const rest = inputFile.substring(fromIndex);
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const endOfClassIndex = rest.indexOf('\n}');
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const markerForStartOfClassMethod = '\n */\n ';
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const startOfClassMethodIndex = rest.indexOf(markerForStartOfClassMethod);
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if (startOfClassMethodIndex === -1 || startOfClassMethodIndex > endOfClassIndex) {
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return -1;
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}
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const afterMarkerIndex = rest.indexOf(markerForStartOfClassMethod) + markerForStartOfClassMethod.length;
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const isPublicMethod = rest[afterMarkerIndex] !== '_' &&
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rest[afterMarkerIndex] !== '#' &&
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!rest.substring(afterMarkerIndex, rest.indexOf('\n', afterMarkerIndex)).includes('static') &&
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!rest.substring(afterMarkerIndex, rest.indexOf('\n', afterMarkerIndex)).includes('constructor');
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if (isPublicMethod) {
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return fromIndex + afterMarkerIndex;
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}
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return getIndexOfNextPublicMethod(fromIndex + afterMarkerIndex);
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}
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function scanUntilIndex(indexToScanTo) {
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const output = inputFile.substring(inputIndex, indexToScanTo);
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inputIndex = indexToScanTo;
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return output;
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}
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let outputFile = '';
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// Match this:
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// //------------------------------------------------------------------------------
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// // Requirements
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// //------------------------------------------------------------------------------
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outputFile += scanUntilMarker('// Requirements');
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outputFile += scanUntilMarker('//--');
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outputFile += scanUntilNewline();
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outputFile += `
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// --- BEGIN MONKEY PATCH ---
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const bulkSuppressionsPatch = require(process.env.${constants_1.ESLINT_BULK_PATCH_PATH_ENV_VAR_NAME});
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const requireFromPathToLinterJS = bulkSuppressionsPatch.requireFromPathToLinterJS;
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`;
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// Match this:
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// //------------------------------------------------------------------------------
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// // Typedefs
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// //------------------------------------------------------------------------------
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const requireSection = scanUntilMarker('// Typedefs');
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// Match something like this:
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//
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// const path = require('path'),
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// eslintScope = require('eslint-scope'),
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// evk = require('eslint-visitor-keys'),
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//
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// Convert to something like this:
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//
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// const path = require('path'),
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// eslintScope = requireFromPathToLinterJS('eslint-scope'),
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// evk = requireFromPathToLinterJS('eslint-visitor-keys'),
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//
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outputFile += requireSection.replace(/require\s*\((?:'([^']+)'|"([^"]+)")\)/g, (match, p1, p2) => {
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var _a;
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const importPath = (_a = p1 !== null && p1 !== void 0 ? p1 : p2) !== null && _a !== void 0 ? _a : '';
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if (importPath !== 'path') {
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if (p1) {
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return `requireFromPathToLinterJS('${p1}')`;
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}
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if (p2) {
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return `requireFromPathToLinterJS("${p2}")`;
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}
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}
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// Keep as-is
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return match;
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});
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outputFile += `--- END MONKEY PATCH ---
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`;
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// Match this:
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// ```
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// if (reportTranslator === null) {
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// reportTranslator = createReportTranslator({
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// ruleId,
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// severity,
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// sourceCode,
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// messageIds,
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// disableFixes
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// });
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// }
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// const problem = reportTranslator(...args);
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//
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// if (problem.fix && !(rule.meta && rule.meta.fixable)) {
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// throw new Error("Fixable rules must set the `meta.fixable` property to \"code\" or \"whitespace\".");
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// }
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// ```
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//
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// Convert to something like this:
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// ```
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// if (reportTranslator === null) {
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// reportTranslator = createReportTranslator({
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// ruleId,
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// severity,
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// sourceCode,
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// messageIds,
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// disableFixes
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// });
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// }
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// const problem = reportTranslator(...args);
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// // --- BEGIN MONKEY PATCH ---
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// if (bulkSuppressionsPatch.shouldBulkSuppress({ filename, currentNode, ruleId })) return;
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// // --- END MONKEY PATCH ---
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//
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// if (problem.fix && !(rule.meta && rule.meta.fixable)) {
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// throw new Error("Fixable rules must set the `meta.fixable` property to \"code\" or \"whitespace\".");
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// }
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// ```
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outputFile += scanUntilMarker('const problem = reportTranslator(...args);');
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outputFile += `
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// --- BEGIN MONKEY PATCH ---
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if (bulkSuppressionsPatch.shouldBulkSuppress({ filename, currentNode, ruleId, problem })) return;
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// --- END MONKEY PATCH ---
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`;
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outputFile += scanUntilMarker('nodeQueue.forEach(traversalInfo => {');
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outputFile += scanUntilMarker('});');
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outputFile += scanUntilNewline();
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outputFile += scanUntilMarker('class Linter {');
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outputFile += scanUntilNewline();
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outputFile += `
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// --- BEGIN MONKEY PATCH ---
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/**
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* We intercept ESLint execution at the .eslintrc.js file, but unfortunately the Linter class is
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* initialized before the .eslintrc.js file is executed. This means the internalSlotsMap that all
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* the patched methods refer to is not initialized. This method checks if the internalSlotsMap is
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* initialized, and if not, initializes it.
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*/
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_conditionallyReinitialize({ cwd, configType } = {}) {
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if (internalSlotsMap.get(this) === undefined) {
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internalSlotsMap.set(this, {
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cwd: normalizeCwd(cwd),
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lastConfigArray: null,
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lastSourceCode: null,
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lastSuppressedMessages: [],
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configType, // TODO: Remove after flat config conversion
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parserMap: new Map([['espree', espree]]),
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ruleMap: new Rules()
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});
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this.version = pkg.version;
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}
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}
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// --- END MONKEY PATCH ---
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`;
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let indexOfNextPublicMethod = getIndexOfNextPublicMethod(inputIndex);
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while (indexOfNextPublicMethod !== -1) {
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outputFile += scanUntilIndex(indexOfNextPublicMethod);
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outputFile += scanUntilNewline();
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outputFile += ` // --- BEGIN MONKEY PATCH ---
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this._conditionallyReinitialize();
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// --- END MONKEY PATCH ---
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`;
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indexOfNextPublicMethod = getIndexOfNextPublicMethod(inputIndex);
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}
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outputFile += scanUntilEnd();
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fs_1.default.writeFileSync(outputFilePath, outputFile);
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}
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exports.generatePatchedLinterJsFileIfDoesNotExist = generatePatchedLinterJsFileIfDoesNotExist;
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//# sourceMappingURL=generate-patched-file.js.map
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