Merge pull request #24 from vend/hax-up-ts-definition

Copy and paste RoundingMode type since it's not exported

index.d.ts

@@ -1,11 +1,48 @@
 declare module 'vend-number' {
-  import { BigNumber, RoundingMode } from 'bignumber.js'
+  import { BigNumber } from 'bignumber.js'
 
   interface Stringable {
     toString(): string
   }
 
-  declare export default class VendNumber extends BigNumber {
+  // RoundingMode is not exported in bignumber.js 5.0.0 so have to copy and paste the declaration from bignumber.js to
+  // here in order to use the type. RoundingMode is available in bignumber.js 6.0.0+
+  enum RoundingMode {
+    /** Rounds away from zero */
+    ROUND_UP = 0,
+    /** Rounds towards zero */
+    ROUND_DOWN = 1,
+    /** Rounds towards Infinity */
+    ROUND_CEIL = 2,
+    /** Rounds towards -Infinity */
+    ROUND_FLOOR = 3,
+    /**
+     * Rounds towards nearest neighbour. If equidistant, rounds away from zero
+     */
+    ROUND_HALF_UP = 4,
+    /**
+     * Rounds towards nearest neighbour. If equidistant, rounds towards zero
+     */
+    ROUND_HALF_DOWN = 5,
+    /**
+     * Rounds towards nearest neighbour. If equidistant, rounds towards even neighbour
+     */
+    ROUND_HALF_EVEN = 6,
+    /**
+     * Rounds towards nearest neighbour. If equidistant, rounds towards `Infinity`
+     */
+    ROUND_HALF_CEIL = 7,
+    /**
+     * Rounds towards nearest neighbour. If equidistant, rounds towards `-Infinity`
+     */
+    ROUND_HALF_FLOOR = 8,
+    /**
+     * The remainder is always positive. Euclidian division: `q = sign(n) * floor(a / abs(n))`
+     */
+    EUCLID = 9
+  }
+
+  export default class VendNumber extends BigNumber {
     constructor (value?: Stringable)
 
     static readonly ROUNDING_MODES: {