diff --git a/Exercises/1-pipe.js b/Exercises/1-pipe.js
index d09882a..0107e2c 100644
--- a/Exercises/1-pipe.js
+++ b/Exercises/1-pipe.js
@@ -1,5 +1,10 @@
'use strict';
+const pipe = (...fns) => {
+ if (!fns.reduce((g, f) => typeof f === 'function' && g, true)) {
+ throw new Error('Not a function');
+ }
-const pipe = (...fns) => x => null;
+ return g => fns.reduce((g, f) => f(g), g);
+};
module.exports = { pipe };
diff --git a/Exercises/2-compose.js b/Exercises/2-compose.js
index 368e521..d52eace 100644
--- a/Exercises/2-compose.js
+++ b/Exercises/2-compose.js
@@ -1,5 +1,28 @@
'use strict';
-const compose = (...fns) => x => null;
+const compose = (...fns) => {
+ const events = { };
+ const emit = (event, ...args) => {
+ events[event](args);
+ };
+ const f = x => {
+ let res = x;
+ try {
+ for (const f of fns.reverse()) {
+ res = f(res);
+ }
+ } catch (e) {
+ emit('error', e);
+ return undefined;
+ }
+ return res;
+ };
+
+ const on = (event, callback) => {
+ events[event] = callback;
+ };
+ Object.assign(f, { on });
+ return f;
+};
module.exports = { compose };
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