js-proxy - npm Package Compare versions

Comparing version 0.1.0 to 0.1.1

cjs/index.js

 'use strict';
-Object.defineProperty(exports, '__esModule', {value: true}).default = () => {};
+const { ARRAY, FUNCTION, NULL, OBJECT, UNDEFINED } = require('proxy-target/types');
+const handlerTraps = require('proxy-target/traps');
+const { bound } = require('proxy-target');
+const { create, drop } = require('gc-hook');
+
+const { Object, Proxy, Reflect } = globalThis;
+
+const { isArray } = Array;
+const { ownKeys } = Reflect;
+const { create: extend, hasOwn, values } = Object;
+
+const traps = new Set([...values(handlerTraps)]);
+const typesOf = new WeakMap;
+const direct = Symbol();
+
+const extendHandler = (handler, type, value) => {
+  const descriptors = { type: { value: type } };
+  const hasValueOf = hasOwn(handler, 'valueOf');
+  for(const trap of traps) {
+    let descriptor = value(handler[trap] || Reflect[trap]);
+    if (hasValueOf && trap === handlerTraps.GET) {
+      const { valueOf } = handler;
+      const { value } = descriptor;
+      descriptor = {
+        value($, s, ..._) {
+          return s === direct ?
+            valueOf.call(this, $) :
+            value.call(this, $, s, ..._);
+        }
+      };
+    }
+    descriptors[trap] = descriptor;
+  }
+  return extend(handler, descriptors);
+};
+
+const proxy = ($, target, handler, token = $) => {
+  if (token === $) {
+    switch (typeof $) {
+      case OBJECT:
+      case FUNCTION:
+      case UNDEFINED: break;
+      default: {
+        token = false;
+        if (target === $) target = Object($);
+      }
+    }
+  }
+  const p = new Proxy(target, handler);
+  const { destruct } = handler;
+  return destruct ? create($, destruct, { token, return: p }) : p;
+};
+
+const proxyOf = namespace => {
+  const proxies = { free: token => drop(token) };
+  for (const type of ownKeys(namespace)) {
+    const traps = namespace[type];
+    switch (type) {
+      case ARRAY: {
+        const handler = extendHandler(traps, type, method => ({
+          value([ $ ], ..._) {
+            return method.call(this, $, ..._);
+          }
+        }));
+        proxies[type] = ($, ..._) => proxy($, [ $ ], handler, ..._);
+        break;
+      }
+      case FUNCTION: {
+        const handler = extendHandler(traps, type, method => ({
+          value($, ..._) {
+            return method.call(this, $(), ..._);
+          }
+        }));
+        proxies[type] = ($, ..._) => proxy($, bound($), handler, ..._);
+        break;
+      }
+      case OBJECT: {
+        const handler = extendHandler(traps, type, method => ({
+          value({ $ }, ..._) {
+            return method.call(this, $, ..._);
+          }
+        }));
+        proxies[type] = ($, ..._) => proxy($, { $ }, handler, ..._);
+        break;
+      }
+      default: {
+        const handler = extendHandler(traps, type, value => ({ value }));
+        proxies[type] = ($, ..._) => {
+          const p = proxy($, $, handler, ..._);
+          typesOf.set(p, type);
+          return p;
+        };
+        break;
+      }
+    }
+  }
+  return proxies;
+};
+exports.proxyOf = proxyOf;
+
+const typeOf = value => {
+  const type = typeof value;
+  return type === OBJECT ?
+    (value ?
+      (typesOf.get(value) || (isArray(value) ? ARRAY : OBJECT)) :
+      NULL
+    ) :
+    type;
+};
+exports.typeOf = typeOf;
+
+/**
+ * @template T the value held by the proxy
+ * @param {T} value a proxied value or a regular
+ * @returns {T}
+ */
+const valueOf = value => (value[direct] || value.valueOf());
+exports.valueOf = valueOf;

esm/index.js

@@ -1,1 +0,115 @@
-export default () => {};
+import { ARRAY, FUNCTION, NULL, OBJECT, UNDEFINED } from 'proxy-target/types';
+import * as handlerTraps from 'proxy-target/traps';
+import { bound } from 'proxy-target';
+import { create, drop } from 'gc-hook';
+
+const { Object, Proxy, Reflect } = globalThis;
+
+const { isArray } = Array;
+const { ownKeys } = Reflect;
+const { create: extend, hasOwn, values } = Object;
+
+const traps = new Set([...values(handlerTraps)]);
+const typesOf = new WeakMap;
+const direct = Symbol();
+
+const extendHandler = (handler, type, value) => {
+  const descriptors = { type: { value: type } };
+  const hasValueOf = hasOwn(handler, 'valueOf');
+  for(const trap of traps) {
+    let descriptor = value(handler[trap] || Reflect[trap]);
+    if (hasValueOf && trap === handlerTraps.GET) {
+      const { valueOf } = handler;
+      const { value } = descriptor;
+      descriptor = {
+        value($, s, ..._) {
+          return s === direct ?
+            valueOf.call(this, $) :
+            value.call(this, $, s, ..._);
+        }
+      };
+    }
+    descriptors[trap] = descriptor;
+  }
+  return extend(handler, descriptors);
+};
+
+const proxy = ($, target, handler, token = $) => {
+  if (token === $) {
+    switch (typeof $) {
+      case OBJECT:
+      case FUNCTION:
+      case UNDEFINED: break;
+      default: {
+        token = false;
+        if (target === $) target = Object($);
+      }
+    }
+  }
+  const p = new Proxy(target, handler);
+  const { destruct } = handler;
+  return destruct ? create($, destruct, { token, return: p }) : p;
+};
+
+export const proxyOf = namespace => {
+  const proxies = { free: token => drop(token) };
+  for (const type of ownKeys(namespace)) {
+    const traps = namespace[type];
+    switch (type) {
+      case ARRAY: {
+        const handler = extendHandler(traps, type, method => ({
+          value([ $ ], ..._) {
+            return method.call(this, $, ..._);
+          }
+        }));
+        proxies[type] = ($, ..._) => proxy($, [ $ ], handler, ..._);
+        break;
+      }
+      case FUNCTION: {
+        const handler = extendHandler(traps, type, method => ({
+          value($, ..._) {
+            return method.call(this, $(), ..._);
+          }
+        }));
+        proxies[type] = ($, ..._) => proxy($, bound($), handler, ..._);
+        break;
+      }
+      case OBJECT: {
+        const handler = extendHandler(traps, type, method => ({
+          value({ $ }, ..._) {
+            return method.call(this, $, ..._);
+          }
+        }));
+        proxies[type] = ($, ..._) => proxy($, { $ }, handler, ..._);
+        break;
+      }
+      default: {
+        const handler = extendHandler(traps, type, value => ({ value }));
+        proxies[type] = ($, ..._) => {
+          const p = proxy($, $, handler, ..._);
+          typesOf.set(p, type);
+          return p;
+        };
+        break;
+      }
+    }
+  }
+  return proxies;
+};
+
+export const typeOf = value => {
+  const type = typeof value;
+  return type === OBJECT ?
+    (value ?
+      (typesOf.get(value) || (isArray(value) ? ARRAY : OBJECT)) :
+      NULL
+    ) :
+    type;
+};
+
+/**
+ * @template T the value held by the proxy
+ * @param {T} value a proxied value or a regular
+ * @returns {T}
+ */
+export const valueOf = value => (value[direct] || value.valueOf());

package.json

 {
   "name": "js-proxy",
-  "version": "0.1.0",
-  "description": "",
+  "version": "0.1.1",
+  "description": "The one-stop shop solution for JS Proxies and FFI APIs",
   "main": "./cjs/index.js",
@@ -9,6 +9,11 @@ "scripts": {
     "cjs": "ascjs esm cjs",
-    "coveralls": "c8 report --reporter=text-lcov | coveralls",
-    "test": "c8 node test/index.js"
+    "test": "c8 node --expose-gc test/index.js",
+    "coverage": "mkdir -p ./coverage; c8 report --reporter=text-lcov > ./coverage/lcov.info"
   },
-  "keywords": [],
+  "keywords": [
+    "proxy",
+    "ffi",
+    "gc",
+    "destruct"
+  ],
   "author": "Andrea Giammarchi",
@@ -18,4 +23,3 @@ "license": "MIT",
     "ascjs": "^6.0.3",
-    "c8": "^9.1.0",
-    "coveralls": "^3.1.1"
+    "c8": "^9.1.0"
   },
@@ -29,2 +33,14 @@ "module": "./esm/index.js",
     },
+    "./heap": {
+      "import": "./esm/heap.js",
+      "default": "./cjs/heap.js"
+    },
+    "./traps": {
+      "import": "./esm/traps.js",
+      "default": "./cjs/traps.js"
+    },
+    "./types": {
+      "import": "./esm/types.js",
+      "default": "./cjs/types.js"
+    },
     "./package.json": "./package.json"
@@ -34,4 +50,4 @@ },
     "gc-hook": "^0.3.1",
-    "proxy-target": "^3.0.1"
+    "proxy-target": "^3.0.2"
   }
 }

README.md

@@ -1,3 +0,9 @@
-# js-proxy
+# JS Proxy
 
-Coming soon ...
+[![build status](https://github.com/WebReflection/js-proxy/actions/workflows/node.js.yml/badge.svg)](https://github.com/WebReflection/js-proxy/actions) [![Coverage Status](https://coveralls.io/repos/github/WebReflection/js-proxy/badge.svg?branch=main)](https://coveralls.io/github/WebReflection/js-proxy?branch=main)
+
+<sup>**Social Media Photo by [Vinu T](https://unsplash.com/@happy_pixel?utm_content=creditCopyText&utm_medium=referral&utm_source=unsplash) on [Unsplash](https://unsplash.com/photos/a-small-waterfall-in-the-middle-of-a-forest-DHo1nNUI0y4?utm_content=creditCopyText&utm_medium=referral&utm_source=unsplash)**</sup>
+
+The one-stop shop solution for JS Proxies and FFI APIs.
+
+## ... coming soon ...

New alerts

Major refactor

Supply chain risk

Package has recently undergone a major refactor. It may be unstable or indicate significant internal changes. Use caution when updating to versions that include significant changes.

Found 1 instance in 1 package

Fixed alerts

Major refactor

Supply chain risk

Package has recently undergone a major refactor. It may be unstable or indicate significant internal changes. Use caution when updating to versions that include significant changes.

Found 1 instance in 1 package

New author

Supply chain risk

A new npm collaborator published a version of the package for the first time. New collaborators are usually benign additions to a project, but do indicate a change to the security surface area of a package.

Found 1 instance in 1 package

Trivial Package

Supply chain risk

Packages less than 10 lines of code are easily copied into your own project and may not warrant the additional supply chain risk of an external dependency.

Found 1 instance in 1 package

Improved metrics

Total package byte prevSize

12780

increased by1327.93%

Dev dependency count

2

decreased by-33.33%

Number of package files

12

increased by140%

Lines of code

318

increased by10500%

Number of lines in readme file

10

increased by150%

Number of medium supply chain risk alerts

1

decreased by-66.67%

Dependency changes

• Updatedproxy-target@^3.0.2