feat: showAll function and fix sort method

3 files changed, 26 insertions, 4 deletions

diff --git a/src/index.ts b/src/index.ts
index ad6ef9e..d705527 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -6,7 +6,7 @@ import {
   getMultipleRowDetails,
   rangeIndex
 } from './lib/locate';
-import { show, head, tail } from './lib/display';
+import { show, head, tail, showAll } from './lib/display';
 import { getSize, info } from './lib/info';
 import { flatten, fromJSON, fromCSV, searchValue, sort } from './lib/data';
 import { toJSON, toCSV } from './lib/export';
@@ -36,6 +36,7 @@ class Izuku {
   public data = data;
   public header = header;
   public show = show;
+  public showAll = showAll;
   public head = head;
   public tail = tail;
   public info = info;
diff --git a/src/lib/data.ts b/src/lib/data.ts
index e3c1b7d..480c309 100644
--- a/src/lib/data.ts
+++ b/src/lib/data.ts
@@ -213,11 +213,18 @@ export function sort(
   if (columnIndex === -1) {
     throw new Error('Invalid column index');
   }
+  // sort the rowdata based on the column index, if the value is null or undefined, sort it to the end
   const sorted = rowdata.sort((a: any, b: any) => {
-    if (order === 'ascending') {
-      return a[columnIndex] > b[columnIndex] ? 1 : -1;
+    if (a[columnIndex] === null || a[columnIndex] === undefined) {
+      return 1;
+    } else if (b[columnIndex] === null || b[columnIndex] === undefined) {
+      return -1;
     } else {
-      return a[columnIndex] > b[columnIndex] ? -1 : 1;
+      if (order === 'ascending') {
+        return a[columnIndex] > b[columnIndex] ? 1 : -1;
+      } else {
+        return a[columnIndex] < b[columnIndex] ? 1 : -1;
+      }
     }
   });
   this.rowdata = sorted;
diff --git a/src/lib/display.ts b/src/lib/display.ts
index c189434..1af1f84 100644
--- a/src/lib/display.ts
+++ b/src/lib/display.ts
@@ -112,6 +112,20 @@ export function show(this: Frame): void {
 }
 
 /**
+ * showAll prints the frame without truncating
+ * @returns the current frame
+ */
+export function showAll(this: Frame): void {
+  if (this.rowdata.length === 0) {
+    console.log('No data found');
+  } else {
+    displayTable(
+      getTable(this.rowdata, this.columns, undefined, this.tableTitle)
+    );
+  }
+}
+
+/**
  * head prints maximum first n rows of the frame
  * @param n: the number of rows to be returned
  * @returns the first n rows of the frame as array of arrays