1 files changed, 166 insertions, 0 deletions
diff --git a/node_modules/@istanbuljs/load-nyc-config/index.js b/node_modules/@istanbuljs/load-nyc-config/index.js
new file mode 100644
index 0000000..0c8c05e
--- /dev/null
+++ b/node_modules/@istanbuljs/load-nyc-config/index.js
@@ -0,0 +1,166 @@
+'use strict';
+
+const fs = require('fs');
+const path = require('path');
+const {promisify} = require('util');
+const camelcase = require('camelcase');
+const findUp = require('find-up');
+const resolveFrom = require('resolve-from');
+const getPackageType = require('get-package-type');
+
+const readFile = promisify(fs.readFile);
+
+let loadActive = false;
+
+function isLoading() {
+	return loadActive;
+}
+
+const standardConfigFiles = [
+	'.nycrc',
+	'.nycrc.json',
+	'.nycrc.yml',
+	'.nycrc.yaml',
+	'nyc.config.js',
+	'nyc.config.cjs',
+	'nyc.config.mjs'
+];
+
+function camelcasedConfig(config) {
+	const results = {};
+	for (const [field, value] of Object.entries(config)) {
+		results[camelcase(field)] = value;
+	}
+
+	return results;
+}
+
+async function findPackage(options) {
+	const cwd = options.cwd || process.env.NYC_CWD || process.cwd();
+	const pkgPath = await findUp('package.json', {cwd});
+	if (pkgPath) {
+		const pkgConfig = JSON.parse(await readFile(pkgPath, 'utf8')).nyc || {};
+		if ('cwd' in pkgConfig) {
+			pkgConfig.cwd = path.resolve(path.dirname(pkgPath), pkgConfig.cwd);
+		}
+
+		return {
+			cwd: path.dirname(pkgPath),
+			pkgConfig
+		};
+	}
+
+	return {
+		cwd,
+		pkgConfig: {}
+	};
+}
+
+async function actualLoad(configFile) {
+	if (!configFile) {
+		return {};
+	}
+
+	const configExt = path.extname(configFile).toLowerCase();
+	switch (configExt) {
+		case '.js':
+			/* istanbul ignore next: coverage for 13.2.0+ is shown in load-esm.js */
+			if (await getPackageType(configFile) === 'module') {
+				return require('./load-esm')(configFile);
+			}
+
+			/* fallthrough */
+		case '.cjs':
+			return require(configFile);
+		/* istanbul ignore next: coverage for 13.2.0+ is shown in load-esm.js */
+		case '.mjs':
+			return require('./load-esm')(configFile);
+		case '.yml':
+		case '.yaml':
+			return require('js-yaml').load(await readFile(configFile, 'utf8'));
+		default:
+			return JSON.parse(await readFile(configFile, 'utf8'));
+	}
+}
+
+async function loadFile(configFile) {
+	/* This lets @istanbuljs/esm-loader-hook avoid circular initialization when loading
+	 * configuration.  This should generally only happen when the loader hook is active
+	 * on the main nyc process. */
+	loadActive = true;
+
+	try {
+		return await actualLoad(configFile);
+	} finally {
+		loadActive = false;
+	}
+}
+
+async function applyExtends(config, filename, loopCheck = new Set()) {
+	config = camelcasedConfig(config);
+	if ('extends' in config) {
+		const extConfigs = [].concat(config.extends);
+		if (extConfigs.some(e => typeof e !== 'string')) {
+			throw new TypeError(`${filename} contains an invalid 'extends' option`);
+		}
+
+		delete config.extends;
+		const filePath = path.dirname(filename);
+		for (const extConfig of extConfigs) {
+			const configFile = resolveFrom.silent(filePath, extConfig) ||
+				resolveFrom.silent(filePath, './' + extConfig);
+			if (!configFile) {
+				throw new Error(`Could not resolve configuration file ${extConfig} from ${path.dirname(filename)}.`);
+			}
+
+			if (loopCheck.has(configFile)) {
+				throw new Error(`Circular extended configurations: '${configFile}'.`);
+			}
+
+			loopCheck.add(configFile);
+
+			// eslint-disable-next-line no-await-in-loop
+			const configLoaded = await loadFile(configFile);
+			if ('cwd' in configLoaded) {
+				configLoaded.cwd = path.resolve(path.dirname(configFile), configLoaded.cwd);
+			}
+
+			Object.assign(
+				config,
+				// eslint-disable-next-line no-await-in-loop
+				await applyExtends(configLoaded, configFile, loopCheck)
+			);
+		}
+	}
+
+	return config;
+}
+
+async function loadNycConfig(options = {}) {
+	const {cwd, pkgConfig} = await findPackage(options);
+	const configFiles = [].concat(options.nycrcPath || standardConfigFiles);
+	const configFile = await findUp(configFiles, {cwd});
+	if (options.nycrcPath && !configFile) {
+		throw new Error(`Requested configuration file ${options.nycrcPath} not found`);
+	}
+
+	const config = {
+		cwd,
+		...(await applyExtends(pkgConfig, path.join(cwd, 'package.json'))),
+		...(await applyExtends(await loadFile(configFile), configFile))
+	};
+
+	const arrayFields = ['require', 'extension', 'exclude', 'include'];
+	for (const arrayField of arrayFields) {
+		if (config[arrayField]) {
+			config[arrayField] = [].concat(config[arrayField]);
+		}
+	}
+
+	return config;
+}
+
+module.exports = {
+	loadNycConfig,
+	isLoading
+};