feat(concat): implement concatAF method

AsyncAF · May 22, 2018 · b7fbf43 · b7fbf43
1 parent 47c2dea
commit b7fbf43
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diff --git a/lib/methods/arrays/concatAF.js b/lib/methods/arrays/concatAF.js
@@ -0,0 +1,14 @@
+/* eslint-disable no-confusing-arrow */
+const concatAF = function (...values) {
+  return this.then(arrOrStr => {
+    if (!(typeof arrOrStr === 'string' || Array.isArray(arrOrStr))) throw TypeError(
+      `concatAF cannot be called on ${arrOrStr}, only on an Array or String`,
+    );
+    return values.reduce((arrOrStr, value) =>
+      value instanceof this.constructor || value instanceof Promise
+        ? value.then(value => arrOrStr.concat(value))
+        : arrOrStr.concat(value), arrOrStr);
+  });
+};
+
+export default concatAF;
diff --git a/packageList.js b/packageList.js
@@ -48,6 +48,7 @@ import findIndexAF from './lib/methods/arrays/findIndexAF';
 import indexOfAF from './lib/methods/arrays/indexOfAF';
 import lastIndexOfAF from './lib/methods/arrays/lastIndexOfAF';
 import joinAF from './lib/methods/arrays/joinAF';
+import concatAF from './lib/methods/arrays/concatAF';
 
 const arrayMethods = [
   name(mapAF, 'mapAF'),
@@ -62,6 +63,7 @@ const arrayMethods = [
   name(indexOfAF, 'indexOfAF'),
   name(lastIndexOfAF, 'lastIndexOfAF'),
   name(joinAF, 'joinAF'),
+  name(concatAF, 'concatAF'),
 ].map(method => [
   method,
   `${libPath}methods/arrays/${method.name}`,
@@ -72,7 +74,11 @@ const arrayMethods = [
 import splitAF from './lib/methods/strings/splitAF';
 
 const stringMethods = [
+  name(includesAF, 'includesAF'),
+  name(indexOfAF, 'indexOfAF'),
+  name(lastIndexOfAF, 'lastIndexOfAF'),
   name(splitAF, 'splitAF'),
+  name(concatAF, 'concatAF'),
 ].map(method => [
   method,
   `${libPath}methods/strings/${method.name}`,