Merge pull request #120 from sasjs/add-utility-bytesToSize

feat: added bytesToSize utility

src/utils/bytesToSize.spec.ts

@@ -0,0 +1,7 @@
+import { bytesToSize } from './bytesToSize'
+
+describe('bytesToSize', () => {
+  it('should Convert bytes to KB, MB, GB, TB', () => {
+    expect(bytesToSize(1024)).toEqual('1.0 KB')
+  })
+})

src/utils/bytesToSize.ts

@@ -0,0 +1,25 @@
+/**
+ * Convert bytes to KB, MB, GB, TB
+ * @method
+ * @param {number} bytes amount of bytes
+ * @param {number} [decimals = 1] amount of digits after decimal point
+ * @param {number} [maxValue = 1TB] maximum value
+ * @returns {string} Formatted string representing converted bytes
+ */
+export const bytesToSize = (
+  bytes: number,
+  decimals = 1,
+  maxValue = 1024 * 1024 * 1024 * 1024 // 1TB
+) => {
+  if (bytes === 0) return '0 B'
+
+  bytes = bytes > maxValue ? maxValue : bytes
+
+  const sizes = ['B', 'KB', 'MB', 'GB', 'TB']
+  const k = 1024
+  const dm = decimals < 0 ? 0 : decimals
+
+  const i = Math.floor(Math.log(bytes) / Math.log(k))
+
+  return (bytes / Math.pow(k, i)).toFixed(dm) + ' ' + sizes[i]
+}

src/utils/index.ts

@@ -5,3 +5,5 @@ export { urlOrigin } from './url'
 export { encodeToBase64, decodeFromBase64 } from './base64'
 
 export { getExecutorPath } from './executor'
+
+export { bytesToSize } from './bytesToSize'