Update Conversions.motesToCSPR

src/types/Conversions.test.ts

@@ -0,0 +1,20 @@
+import { expect } from 'chai';
+
+import { Conversions } from "./Conversions";
+
+describe('Conversions', () => {
+  it('should convert motes to CSPR correctly', function() {
+    const bal1 = Conversions.motesToCSPR('1');
+    const bal2 = Conversions.motesToCSPR('123400047000');
+    const bal3 = Conversions.motesToCSPR('1000000040234023040234023040234023042040230420402000000');
+    const bal4 = Conversions.motesToCSPR('0');
+    const bal5 = Conversions.motesToCSPR('100000000000');
+
+    expect(bal1).to.deep.equal('0.000000001');
+    expect(bal2).to.deep.equal('123.400047');
+    expect(bal3).to.deep.equal('1000000040234023040234023040234023042040230420.402');
+    expect(bal4).to.deep.equal('0');
+    expect(bal5).to.deep.equal('100');
+    expect(() => Conversions.motesToCSPR('-100')).to.throw('Motes cannot be negative number');
+  });
+});

src/types/Conversions.ts

@@ -113,7 +113,19 @@ export class Conversions {
    * const cspr = Conversions.motesToCSPR(motes);
    * console.log(cspr.toString()); // Outputs: "1"
    */
-  static motesToCSPR(motes: BigNumberish): BigNumber {
-    return BigNumber.from(motes).div('1000000000');
+  static motesToCSPR(motes: BigNumberish): string {
+    const motesBigNumber = BigNumber.from(motes);
+
+    if (motesBigNumber.lt(0)) {
+      throw new Error('Motes cannot be negative number');
+    }
+
+    const result = motesBigNumber.toBigInt() * BigInt(10 ** 9) / BigInt(10 ** 9);
+    const resultStr = result.toString();
+
+    const integerPart = resultStr.slice(0, -9) || "0";
+    const decimalPart = resultStr.slice(-9).padStart(9, '0');
+
+    return `${integerPart}.${decimalPart}`.replace(/\.?0+$/, '');
   }
 }