Exported prevDay().

README.md

@@ -80,8 +80,11 @@ when it breaks.
 
 ## Changelog
 
+**2.1.0** (2018-06-25):
+  * Exported helper function `prevDay()`.
+
 **2.0.0** (2018-06-25):
-  * Exported some helper functions.
+  * Exported helper functions `stringToDate()` and `dateToString()`.
 
 **1.0.0** (2018-06-11):
   * Support for passing a GitHub API key.

docs/advanced.md

@@ -52,4 +52,8 @@ console.log(date); // 2018-05-11T00:00:00.000Z
 
 const dateString = githubContribs.dateToString(date);
 console.log(dateString); // 2018-05-11
+
+const dayBefore = githubContribs.prevDay(date); // Date() object
+const dayBeforeString = githubContribs.dateToString(dayBefore);
+console.log(dayBeforeString); // 2018-05-10
 ```

index.js

@@ -33,10 +33,16 @@
     return date.toISOString().substring(0, 10);
   };
 
+  // See https://stackoverflow.com/a/25114400/1855917
+  const prevDay = date => {
+    return new Date(date.getTime() - (24 * 60 * 60 * 1000));
+  };
+
   module.exports = {
     fetch: fetchContribs,
     stringToDate,
-    dateToString
+    dateToString,
+    prevDay
   };
 
   const fetchRetry = url => {
@@ -205,9 +211,4 @@
     return result;
   };
 
-  // See https://stackoverflow.com/a/25114400/1855917
-  const prevDay = date => {
-    return new Date(date.getTime() - (24 * 60 * 60 * 1000));
-  };
-
 })();

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@ghuser/github-contribs",
-  "version": "2.0.0",
+  "version": "2.1.0",
   "description": "List all GitHub repos a user has contributed to since the beginning of time.",
   "license": "Unlicense",
   "repository": {