Add callable function to curry module (#161)

* implement callable with Proxy

Author: sodiray

Diff for: cdn/radash.esm.js

@@ -407,6 +407,18 @@ const throttle = ({ interval }, func) => {
   };
   return throttled;
 };
+const callable = (obj, fn) => {
+  const FUNC = () => {
+  };
+  return new Proxy(Object.assign(FUNC, obj), {
+    get: (target, key) => target[key],
+    set: (target, key, value) => {
+      target[key] = value;
+      return true;
+    },
+    apply: (target, self, args) => fn(Object.assign({}, target))(...args)
+  });
+};
 
 const toFloat = (value, defaultValue) => {
   const def = defaultValue === void 0 ? 0 : defaultValue;
@@ -766,4 +778,4 @@ const template = (str, data, regex = /\{\{(.+?)\}\}/g) => {
   }, str);
 };
 
-export { alphabetical, boil, camel as camal, camel, capitalize, chain, clone, cluster, compose, counting, dash, debounce, defer, diff, draw, first, flat, fork, get, group, intersects, invert, isArray, isDate, isEmpty, isEqual, isFloat, isFunction, isInt, isNumber, isObject, isPrimitive, isString, isSymbol, iterate, last, list, listify, lowerize, map, mapEntries, mapKeys, mapValues, max, memo, merge, min, objectify, omit, parallel, partial, partob, pascal, pick, proxied, random, range, reduce, replace, replaceOrAppend, retry, select, series, shake, shift, shuffle, sift, sleep, snake, sort, sum, template, throttle, title, toFloat, toInt, toggle, tryit as try, tryit, uid, unique, upperize, zip };
+export { alphabetical, boil, callable, camel as camal, camel, capitalize, chain, clone, cluster, compose, counting, dash, debounce, defer, diff, draw, first, flat, fork, get, group, intersects, invert, isArray, isDate, isEmpty, isEqual, isFloat, isFunction, isInt, isNumber, isObject, isPrimitive, isString, isSymbol, iterate, last, list, listify, lowerize, map, mapEntries, mapKeys, mapValues, max, memo, merge, min, objectify, omit, parallel, partial, partob, pascal, pick, proxied, random, range, reduce, replace, replaceOrAppend, retry, select, series, shake, shift, shuffle, sift, sleep, snake, sort, sum, template, throttle, title, toFloat, toInt, toggle, tryit as try, tryit, uid, unique, upperize, zip };

Diff for: cdn/radash.js

@@ -410,6 +410,18 @@ var radash = (function (exports) {
     };
     return throttled;
   };
+  const callable = (obj, fn) => {
+    const FUNC = () => {
+    };
+    return new Proxy(Object.assign(FUNC, obj), {
+      get: (target, key) => target[key],
+      set: (target, key, value) => {
+        target[key] = value;
+        return true;
+      },
+      apply: (target, self, args) => fn(Object.assign({}, target))(...args)
+    });
+  };
 
   const toFloat = (value, defaultValue) => {
     const def = defaultValue === void 0 ? 0 : defaultValue;
@@ -771,6 +783,7 @@ var radash = (function (exports) {
 
   exports.alphabetical = alphabetical;
   exports.boil = boil;
+  exports.callable = callable;
   exports.camal = camel;
   exports.camel = camel;
   exports.capitalize = capitalize;

Diff for: cdn/radash.min.js

@@ -1,6 +1,6 @@
 {
   "name": "radash",
-  "version": "9.3.0",
+  "version": "9.4.0",
   "description": "Functional utility library - modern, simple, typed, powerful",
   "main": "dist/cjs/index.cjs",
   "module": "dist/esm/index.mjs",

Diff for: package.json

@@ -128,3 +128,40 @@ export const throttle = <TArgs extends any[]>(
   }
   return throttled as unknown as (...args: TArgs) => any
 }
+
+/**
+ * Make an object callable. Given an object and a function
+ * the returned object will be a function with all the
+ * objects properties.
+ *
+ * @example
+ * ```typescript
+ * const car = callable({
+ *   wheels: 2
+ * }, self => () => {
+ *   return 'driving'
+ * })
+ *
+ * car.wheels // => 2
+ * car() // => 'driving'
+ * ```
+ */
+export const callable = <
+  TValue,
+  TObj extends Record<string | number | symbol, TValue>,
+  TFunc extends Function
+>(
+  obj: TObj,
+  fn: (self: TObj) => TFunc
+): TObj & TFunc => {
+  /* istanbul ignore next */
+  const FUNC = () => {}
+  return new Proxy(Object.assign(FUNC, obj), {
+    get: (target, key: string) => target[key],
+    set: (target, key: string, value: any) => {
+      ;(target as any)[key] = value
+      return true
+    },
+    apply: (target, self, args) => fn(Object.assign({}, target))(...args)
+  }) as unknown as TObj & TFunc
+}

Diff for: src/curry.ts

@@ -39,6 +39,7 @@ export {
 } from './async'
 export type { AggregateError } from './async'
 export {
+  callable,
   chain,
   compose,
   debounce,

Diff for: src/index.ts

@@ -175,3 +175,28 @@ describe('curry module', () => {
     })
   })
 })
+
+describe('callable function', () => {
+  test('makes object callable', async () => {
+    const request = {
+      source: 'client',
+      body: 'ford',
+      doors: 2
+    }
+
+    const call = _.callable(request, self => (id: string) => ({ ...self, id }))
+
+    expect(call.source).toBe('client')
+    expect(call.body).toBe('ford')
+    expect(call.doors).toBe(2)
+    const s = call('23')
+    expect(s.doors).toBe(2)
+    expect(s.id).toBe('23')
+
+    call.doors = 4
+    expect(call.doors).toBe(4)
+    const x = call('9')
+    expect(x.doors).toBe(4)
+    expect(x.id).toBe('9')
+  })
+})