1 files changed, 97 insertions, 0 deletions
diff --git a/tools/node_modules/eslint/lib/shared/naming.js b/tools/node_modules/eslint/lib/shared/naming.js
new file mode 100644
index 0000000000..b99155f15c
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+++ b/tools/node_modules/eslint/lib/shared/naming.js
@@ -0,0 +1,97 @@
+/**
+ * @fileoverview Common helpers for naming of plugins, formatters and configs
+ */
+"use strict";
+
+const NAMESPACE_REGEX = /^@.*\//iu;
+
+/**
+ * Brings package name to correct format based on prefix
+ * @param {string} name The name of the package.
+ * @param {string} prefix Can be either "eslint-plugin", "eslint-config" or "eslint-formatter"
+ * @returns {string} Normalized name of the package
+ * @private
+ */
+function normalizePackageName(name, prefix) {
+    let normalizedName = name;
+
+    /**
+     * On Windows, name can come in with Windows slashes instead of Unix slashes.
+     * Normalize to Unix first to avoid errors later on.
+     * https://github.com/eslint/eslint/issues/5644
+     */
+    if (normalizedName.includes("\\")) {
+        normalizedName = normalizedName.replace(/\\/gu, "/");
+    }
+
+    if (normalizedName.charAt(0) === "@") {
+
+        /**
+         * it's a scoped package
+         * package name is the prefix, or just a username
+         */
+        const scopedPackageShortcutRegex = new RegExp(`^(@[^/]+)(?:/(?:${prefix})?)?$`, "u"),
+            scopedPackageNameRegex = new RegExp(`^${prefix}(-|$)`, "u");
+
+        if (scopedPackageShortcutRegex.test(normalizedName)) {
+            normalizedName = normalizedName.replace(scopedPackageShortcutRegex, `$1/${prefix}`);
+        } else if (!scopedPackageNameRegex.test(normalizedName.split("/")[1])) {
+
+            /**
+             * for scoped packages, insert the prefix after the first / unless
+             * the path is already @scope/eslint or @scope/eslint-xxx-yyy
+             */
+            normalizedName = normalizedName.replace(/^@([^/]+)\/(.*)$/u, `@$1/${prefix}-$2`);
+        }
+    } else if (!normalizedName.startsWith(`${prefix}-`)) {
+        normalizedName = `${prefix}-${normalizedName}`;
+    }
+
+    return normalizedName;
+}
+
+/**
+ * Removes the prefix from a fullname.
+ * @param {string} fullname The term which may have the prefix.
+ * @param {string} prefix The prefix to remove.
+ * @returns {string} The term without prefix.
+ */
+function getShorthandName(fullname, prefix) {
+    if (fullname[0] === "@") {
+        let matchResult = new RegExp(`^(@[^/]+)/${prefix}$`, "u").exec(fullname);
+
+        if (matchResult) {
+            return matchResult[1];
+        }
+
+        matchResult = new RegExp(`^(@[^/]+)/${prefix}-(.+)$`, "u").exec(fullname);
+        if (matchResult) {
+            return `${matchResult[1]}/${matchResult[2]}`;
+        }
+    } else if (fullname.startsWith(`${prefix}-`)) {
+        return fullname.slice(prefix.length + 1);
+    }
+
+    return fullname;
+}
+
+/**
+ * Gets the scope (namespace) of a term.
+ * @param {string} term The term which may have the namespace.
+ * @returns {string} The namepace of the term if it has one.
+ */
+function getNamespaceFromTerm(term) {
+    const match = term.match(NAMESPACE_REGEX);
+
+    return match ? match[0] : "";
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = {
+    normalizePackageName,
+    getShorthandName,
+    getNamespaceFromTerm
+};