Added decimaljs.light for item caculation

eresearchqut · Mar 16, 2021 · 999aead · 999aead
1 parent cd97cf1
commit 999aead
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Showing 3 changed files with 15 additions and 1 deletion.
diff --git a/itemsize.js b/itemsize.js
@@ -2,6 +2,7 @@ const BASE_LOGICAL_SIZE_OF_NESTED_TYPES = 1
 const LOGICAL_SIZE_OF_EMPTY_DOCUMENT = 3
 const { encode } = require('utf8')
 const atob = require('atob')
+const Decimal = require('decimal.js-light')
 
 // Inspired by https://zaccharles.github.io/dynamodb-calculator/ and adapted for node
 
@@ -31,7 +32,8 @@ const calculateAttributeSizeInBytes = (attribute) => {
 
 const calculateNumberSizeInBytes = (number) => {
   if (number === 0) return 1
-  const fixed = Number.parseFloat(number).toFixed()
+  const decimal = new Decimal(number)
+  const fixed = decimal.toFixed()
   let size = calculateFixedSizeInBytes(fixed.replace('-', '')) + 1
   if (fixed.startsWith('-')) size++
   if (size > 21) size = 21

diff --git a/package-lock.json b/package-lock.json
diff --git a/package.json b/package.json
@@ -23,6 +23,7 @@
     "@aws-sdk/util-dynamodb": "^3.7.0",
     "abstract-leveldown": "^6.3.0",
     "atob": "^2.1.2",
+    "decimal.js-light": "^2.5.1",
     "inherits": "^2.0.1",
     "through2": "^4.0.2",
     "utf8": "^3.0.0"