thunkify accepts Promise arguments

Author: richytong

_internal/funcApply.js

@@ -13,3 +13,5 @@
  * Apply arguments to a function.
  */
 const funcApply = (func, args) => func(...args)
+
+module.exports = funcApply

test.js

@@ -3837,6 +3837,12 @@ eq(
       assert.strictEqual(thunkAdd212.length, 0)
       assert.strictEqual(thunkAdd212(), 3)
     })
+
+    const asyncThunkAdd212 = thunkify(add2, Promise.resolve(1), 2)
+    it('creates a thunk that resolves any promise arguments', async () => {
+      assert.strictEqual(asyncThunkAdd212.length, 0)
+      assert.strictEqual(await asyncThunkAdd212(), 3)
+    })
   })
 
   describe('always', () => {

thunkify.js

@@ -1,3 +1,9 @@
+const areAnyValuesPromises = require('./_internal/areAnyValuesPromises')
+const promiseAll = require('./_internal/promiseAll')
+const curry2 = require('./_internal/curry2')
+const __ = require('./_internal/placeholder')
+const funcApply = require('./_internal/funcApply')
+
 /**
  * @name thunkify
  *
@@ -18,6 +24,9 @@
  * ```
  */
 const thunkify = (func, ...args) => function thunk() {
+  if (areAnyValuesPromises(args)) {
+    return promiseAll(args).then(curry2(funcApply, func, __))
+  }
   return func(...args)
 }