feat: Add asFraction method (pancakeswap#33)

MarketCap-Cash · Feb 17, 2022 · 2ab187f · 2ab187f
1 parent 143cdbe
commit 2ab187f
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diff --git a/src/entities/fractions/fraction.ts b/src/entities/fractions/fraction.ts
@@ -141,4 +141,11 @@ export class Fraction {
     Big.RM = toFixedRounding[rounding]
     return new Big(this.numerator.toString()).div(this.denominator.toString()).toFormat(decimalPlaces, format)
   }
+
+  /**
+   * Helper method for converting any super class back to a fraction
+   */
+  public get asFraction(): Fraction {
+    return new Fraction(this.numerator, this.denominator)
+  }
 }
diff --git a/test/fraction.test.ts b/test/fraction.test.ts
@@ -118,4 +118,11 @@ describe.only('Fraction', () => {
       ).toEqual(new Fraction(JSBI.BigInt(60), JSBI.BigInt(48)))
     })
   })
+  describe('#asFraction', () => {
+    it('returns an equivalent but not the same reference fraction', () => {
+      const f = new Fraction(1, 2)
+      expect(f.asFraction).toEqual(f)
+      expect(f === f.asFraction).toEqual(false)
+    })
+  })
 })