first commit

app_vue/node_modules/@hapi/hoek/lib/clone.js

@@ -0,0 +1,176 @@
+'use strict';
+
+const Reach = require('./reach');
+const Types = require('./types');
+const Utils = require('./utils');
+
+
+const internals = {
+    needsProtoHack: new Set([Types.set, Types.map, Types.weakSet, Types.weakMap])
+};
+
+
+module.exports = internals.clone = function (obj, options = {}, _seen = null) {
+
+    if (typeof obj !== 'object' ||
+        obj === null) {
+
+        return obj;
+    }
+
+    let clone = internals.clone;
+    let seen = _seen;
+
+    if (options.shallow) {
+        if (options.shallow !== true) {
+            return internals.cloneWithShallow(obj, options);
+        }
+
+        clone = (value) => value;
+    }
+    else if (seen) {
+        const lookup = seen.get(obj);
+        if (lookup) {
+            return lookup;
+        }
+    }
+    else {
+        seen = new Map();
+    }
+
+    // Built-in object types
+
+    const baseProto = Types.getInternalProto(obj);
+    if (baseProto === Types.buffer) {
+        return Buffer && Buffer.from(obj);              // $lab:coverage:ignore$
+    }
+
+    if (baseProto === Types.date) {
+        return new Date(obj.getTime());
+    }
+
+    if (baseProto === Types.regex) {
+        return new RegExp(obj);
+    }
+
+    // Generic objects
+
+    const newObj = internals.base(obj, baseProto, options);
+    if (newObj === obj) {
+        return obj;
+    }
+
+    if (seen) {
+        seen.set(obj, newObj);                              // Set seen, since obj could recurse
+    }
+
+    if (baseProto === Types.set) {
+        for (const value of obj) {
+            newObj.add(clone(value, options, seen));
+        }
+    }
+    else if (baseProto === Types.map) {
+        for (const [key, value] of obj) {
+            newObj.set(key, clone(value, options, seen));
+        }
+    }
+
+    const keys = Utils.keys(obj, options);
+    for (const key of keys) {
+        if (key === '__proto__') {
+            continue;
+        }
+
+        if (baseProto === Types.array &&
+            key === 'length') {
+
+            newObj.length = obj.length;
+            continue;
+        }
+
+        const descriptor = Object.getOwnPropertyDescriptor(obj, key);
+        if (descriptor) {
+            if (descriptor.get ||
+                descriptor.set) {
+
+                Object.defineProperty(newObj, key, descriptor);
+            }
+            else if (descriptor.enumerable) {
+                newObj[key] = clone(obj[key], options, seen);
+            }
+            else {
+                Object.defineProperty(newObj, key, { enumerable: false, writable: true, configurable: true, value: clone(obj[key], options, seen) });
+            }
+        }
+        else {
+            Object.defineProperty(newObj, key, {
+                enumerable: true,
+                writable: true,
+                configurable: true,
+                value: clone(obj[key], options, seen)
+            });
+        }
+    }
+
+    return newObj;
+};
+
+
+internals.cloneWithShallow = function (source, options) {
+
+    const keys = options.shallow;
+    options = Object.assign({}, options);
+    options.shallow = false;
+
+    const seen = new Map();
+
+    for (const key of keys) {
+        const ref = Reach(source, key);
+        if (typeof ref === 'object' ||
+            typeof ref === 'function') {
+
+            seen.set(ref, ref);
+        }
+    }
+
+    return internals.clone(source, options, seen);
+};
+
+
+internals.base = function (obj, baseProto, options) {
+
+    if (options.prototype === false) {                  // Defaults to true
+        if (internals.needsProtoHack.has(baseProto)) {
+            return new baseProto.constructor();
+        }
+
+        return baseProto === Types.array ? [] : {};
+    }
+
+    const proto = Object.getPrototypeOf(obj);
+    if (proto &&
+        proto.isImmutable) {
+
+        return obj;
+    }
+
+    if (baseProto === Types.array) {
+        const newObj = [];
+        if (proto !== baseProto) {
+            Object.setPrototypeOf(newObj, proto);
+        }
+
+        return newObj;
+    }
+
+    if (internals.needsProtoHack.has(baseProto)) {
+        const newObj = new proto.constructor();
+        if (proto !== baseProto) {
+            Object.setPrototypeOf(newObj, proto);
+        }
+
+        return newObj;
+    }
+
+    return Object.create(proto);
+};