1 files changed, 147 insertions, 0 deletions
diff --git a/node_modules/npm-conf/lib/util.js b/node_modules/npm-conf/lib/util.js
new file mode 100644
index 0000000..5cde7bc
--- /dev/null
+++ b/node_modules/npm-conf/lib/util.js
@@ -0,0 +1,147 @@
+'use strict';
+const fs = require('fs');
+const path = require('path');
+const types = require('./types');
+
+// https://github.com/npm/npm/blob/latest/lib/config/core.js#L409-L423
+const envReplace = str => {
+	if (typeof str !== 'string' || !str) {
+		return str;
+	}
+
+	// Replace any ${ENV} values with the appropriate environment
+	const regex = /(\\*)\$\{([^}]+)\}/g;
+
+	return str.replace(regex, (orig, esc, name) => {
+		esc = esc.length > 0 && esc.length % 2;
+
+		if (esc) {
+			return orig;
+		}
+
+		if (process.env[name] === undefined) {
+			throw new Error(`Failed to replace env in config: ${orig}`);
+		}
+
+		return process.env[name];
+	});
+};
+
+// https://github.com/npm/npm/blob/latest/lib/config/core.js#L362-L407
+const parseField = (field, key) => {
+	if (typeof field !== 'string') {
+		return field;
+	}
+
+	const typeList = [].concat(types[key]);
+	const isPath = typeList.indexOf(path) !== -1;
+	const isBool = typeList.indexOf(Boolean) !== -1;
+	const isString = typeList.indexOf(String) !== -1;
+	const isNumber = typeList.indexOf(Number) !== -1;
+
+	field = `${field}`.trim();
+
+	if (/^".*"$/.test(field)) {
+		try {
+			field = JSON.parse(field);
+		} catch (err) {
+			throw new Error(`Failed parsing JSON config key ${key}: ${field}`);
+		}
+	}
+
+	if (isBool && !isString && field === '') {
+		return true;
+	}
+
+	switch (field) { // eslint-disable-line default-case
+		case 'true': {
+			return true;
+		}
+
+		case 'false': {
+			return false;
+		}
+
+		case 'null': {
+			return null;
+		}
+
+		case 'undefined': {
+			return undefined;
+		}
+	}
+
+	field = envReplace(field);
+
+	if (isPath) {
+		const regex = process.platform === 'win32' ? /^~(\/|\\)/ : /^~\//;
+
+		if (regex.test(field) && process.env.HOME) {
+			field = path.resolve(process.env.HOME, field.substr(2));
+		}
+
+		field = path.resolve(field);
+	}
+
+	if (isNumber && !field.isNan()) {
+		field = Number(field);
+	}
+
+	return field;
+};
+
+// https://github.com/npm/npm/blob/latest/lib/config/find-prefix.js
+const findPrefix = name => {
+	name = path.resolve(name);
+
+	let walkedUp = false;
+
+	while (path.basename(name) === 'node_modules') {
+		name = path.dirname(name);
+		walkedUp = true;
+	}
+
+	if (walkedUp) {
+		return name;
+	}
+
+	const find = (name, original) => {
+		const regex = /^[a-zA-Z]:(\\|\/)?$/;
+
+		if (name === '/' || (process.platform === 'win32' && regex.test(name))) {
+			return original;
+		}
+
+		try {
+			const files = fs.readdirSync(name);
+
+			if (files.indexOf('node_modules') !== -1 || files.indexOf('package.json') !== -1) {
+				return name;
+			}
+
+			const dirname = path.dirname(name);
+
+			if (dirname === name) {
+				return original;
+			}
+
+			return find(dirname, original);
+		} catch (err) {
+			if (name === original) {
+				if (err.code === 'ENOENT') {
+					return original;
+				}
+
+				throw err;
+			}
+
+			return original;
+		}
+	};
+
+	return find(name, name);
+};
+
+exports.envReplace = envReplace;
+exports.findPrefix = findPrefix;
+exports.parseField = parseField;