From b94d13b413c9eef7b4afd7244cbc48167239f629 Mon Sep 17 00:00:00 2001
From: Fabio Berger <me@fabioberger.com>
Date: Thu, 21 Dec 2017 09:34:50 +0100
Subject: Refactor toBaseUnitAmount so that it throws if user supplies
 unitAmount with too many decimals

---
 packages/0x.js/src/0x.ts | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'packages/0x.js/src')

diff --git a/packages/0x.js/src/0x.ts b/packages/0x.js/src/0x.ts
index 596d6ffba..a18f1fc55 100644
--- a/packages/0x.js/src/0x.ts
+++ b/packages/0x.js/src/0x.ts
@@ -149,6 +149,10 @@ export class ZeroEx {
 
         const unit = new BigNumber(10).pow(decimals);
         const baseUnitAmount = amount.times(unit);
+        const hasDecimals = baseUnitAmount.decimalPlaces() !== 0;
+        if (hasDecimals) {
+            throw new Error(`Invalid unit amount: ${amount.toString()} - Too many decimal places`);
+        }
         return baseUnitAmount;
     }
     /**
-- 
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