first commit

app_vue/node_modules/yargs/build/lib/middleware.js

@@ -0,0 +1,53 @@
+import { argsert } from './argsert.js';
+import { isPromise } from './utils/is-promise.js';
+export function globalMiddlewareFactory(globalMiddleware, context) {
+    return function (callback, applyBeforeValidation = false) {
+        argsert('<array|function> [boolean]', [callback, applyBeforeValidation], arguments.length);
+        if (Array.isArray(callback)) {
+            for (let i = 0; i < callback.length; i++) {
+                if (typeof callback[i] !== 'function') {
+                    throw Error('middleware must be a function');
+                }
+                callback[i].applyBeforeValidation = applyBeforeValidation;
+            }
+            Array.prototype.push.apply(globalMiddleware, callback);
+        }
+        else if (typeof callback === 'function') {
+            callback.applyBeforeValidation = applyBeforeValidation;
+            globalMiddleware.push(callback);
+        }
+        return context;
+    };
+}
+export function commandMiddlewareFactory(commandMiddleware) {
+    if (!commandMiddleware)
+        return [];
+    return commandMiddleware.map(middleware => {
+        middleware.applyBeforeValidation = false;
+        return middleware;
+    });
+}
+export function applyMiddleware(argv, yargs, middlewares, beforeValidation) {
+    const beforeValidationError = new Error('middleware cannot return a promise when applyBeforeValidation is true');
+    return middlewares.reduce((acc, middleware) => {
+        if (middleware.applyBeforeValidation !== beforeValidation) {
+            return acc;
+        }
+        if (isPromise(acc)) {
+            return acc
+                .then(initialObj => Promise.all([
+                initialObj,
+                middleware(initialObj, yargs),
+            ]))
+                .then(([initialObj, middlewareObj]) => Object.assign(initialObj, middlewareObj));
+        }
+        else {
+            const result = middleware(acc, yargs);
+            if (beforeValidation && isPromise(result))
+                throw beforeValidationError;
+            return isPromise(result)
+                ? result.then(middlewareObj => Object.assign(acc, middlewareObj))
+                : Object.assign(acc, result);
+        }
+    }, argv);
+}