galago - npm Package Compare versions

Comparing version 0.0.1 to 0.2.0

example/fakeHttp.js

@@ -112,2 +112,10 @@ /**
 /**
+ * Used as the reduced param to quit reduction if error is present.
+ * @param {*} val
+ * @returns {boolean}
+ */
+const isReduced = (val) =>
+  typeof val === 'object' && val.errors && val.errors.length > 0;
+
+/**
  * Example of simple function composition
@@ -120,3 +128,2 @@ * @param {string} requestBody
     requestBody,
-    'errors',
     [
@@ -127,3 +134,4 @@ parse,
       saveToDb,
-    ]
+    ],
+    isReduced
   );
@@ -130,0 +138,0 @@

lib/index.js

@@ -20,14 +20,14 @@ 'use strict';
  *
- * @param {string} acc
- * @param {exitProp} exitProp
+ * @param {*} acc
  * @param {array<Function>} fns
+ * @param {?function} reducedFn
  * @returns {Promise}
  */
-var reduceFns = function reduceFns(acc, exitProp, fns) {
+var reduceFns = function reduceFns(acc, fns, reducedFn) {
   return new Promise(function (resolve) {
-    if (acc[exitProp] || fns.length === 0) {
+    if (typeof reducedFn === 'function' && reducedFn(acc) || fns.length === 0) {
       resolve(acc);
     } else {
       Promise.resolve(fns[0](acc)).then(function (x) {
-        return resolve(reduceFns(x, exitProp, fns.slice(1)));
+        return resolve(reduceFns(x, fns.slice(1), reducedFn));
       });
@@ -34,0 +34,0 @@ }

package.json

 {
   "name": "galago",
-  "version": "0.0.1",
+  "version": "0.2.0",
   "description": "galago, very specific helper functions for functional-like programming in js",
@@ -5,0 +5,0 @@ "homepage": "https://github.com/filipdanic/galago",

README.md

 # galago
 `galago` /ɡəˈleɪɡoʊz/ is a set of very specific, opinionated helper functions for functional-like programming in js. It’s also the name of [this animal.](https://en.wikipedia.org/wiki/Galago)
 
+🚧 Work in progress, but feel free to:
+```bash
+yarn add galago
+# or
+npm install galago --save
+```
+Or grab the source from `src/index.js` or `lib/index.js` (ES2015) and pluck it into your codebase as vendor code. The world is your oyster. `¯\_(ツ)_/¯`
+
 ## `reduceFns`
 
- Recursively reduces an a array of functions (which can even be async) by being a typical compose function / pipe mechanism. It stops reducing the supplied arguments if one of the functions returns the specified error key in it’s response.
+Recursively reduces an a array of functions (which can even be async) by being a typical compose function / pipe mechanism. It stops reducing the supplied arguments if one of the functions returns the specified error key in it’s response.
 
 **Info:**
 
-* @param {string} acc
-* @param {exitProp} exitProp
-* @param {array<Function>} fns
+* @param {*} acc - used to provide the initial value
+* @param {array<Function>} fns - array of function to execute
+* @param {?function} reducedFn - optional function with signature `fn(x: Any): Boolean`; if returning true, exits the call and returns the last result
 * @returns {Promise}
@@ -20,5 +28,4 @@
   reduceFns(
-    requestBody,
-    'errors',
-    [
+    requestBody, // acc param
+    [ // list of functions
       parse,
@@ -28,3 +35,4 @@ validate,
       saveToDb,
-    ]
+    ],
+    isReduced // reducedFn param
   );
@@ -31,0 +39,0 @@ ```

src/index.js

@@ -18,9 +18,9 @@ /**
  *
- * @param {string} acc
- * @param {exitProp} exitProp
+ * @param {*} acc
  * @param {array<Function>} fns
+ * @param {?function} reducedFn
  * @returns {Promise}
  */
-const reduceFns = (acc, exitProp, fns) => new Promise((resolve) => {
-  if (acc[exitProp] || fns.length === 0) {
+const reduceFns = (acc, fns, reducedFn) => new Promise((resolve) => {
+  if ((typeof reducedFn === 'function' && reducedFn(acc)) || fns.length === 0) {
     resolve(acc);
@@ -30,3 +30,3 @@ } else {
       .resolve(fns[0](acc))
-      .then(x => resolve(reduceFns(x, exitProp, fns.slice(1))));
+      .then(x => resolve(reduceFns(x, fns.slice(1), reducedFn)));
   }
@@ -33,0 +33,0 @@ });

No alert changes

Improved metrics

Total package byte prevSize

70974

increased by1.11%

Lines of code

279

increased by2.57%

Number of lines in readme file

50

increased by19.05%

No dependency changes