ui

app/code/node_modules/laravel-mix/src/PackageDependency.js

@@ -0,0 +1,59 @@
+/**
+ * @typedef {object} DependencyObject
+ * @property {string} package
+ * @property {(name: string) => boolean} [check]
+ */
+
+/**
+ * @typedef {string | DependencyObject} Dependency
+ */
+
+exports.PackageDependency = class PackageDependency {
+    /** @type {string} */
+    package;
+
+    /** @type {string} */
+    name;
+
+    /** @type {(name: string) => boolean | Promise<boolean>} */
+    checkFn;
+
+    /**
+     *
+     * @param {Dependency} dep
+     */
+    static from(dep) {
+        const depObj = typeof dep === 'string' ? { package: dep } : dep;
+
+        return new PackageDependency(depObj.package, depObj.check);
+    }
+
+    /**
+     *
+     * @param {string} pkg
+     * @param {(name: string) => boolean} [checkFn]
+     */
+    constructor(pkg, checkFn) {
+        this.package = pkg;
+        this.name = pkg.replace(/(?!^@)@.+$/, '');
+        this.checkFn = checkFn || (() => true);
+    }
+
+    async needsInstallation() {
+        return !(await this.isInstalled()) || !(await this.isValid());
+    }
+
+    async isInstalled() {
+        try {
+            require.resolve(this.name);
+
+            return true;
+        } catch (e) {
+            return false;
+        }
+    }
+
+    async isValid() {
+        return this.checkFn(this.name);
+    }
+};