Add Typescript declaration file

index.d.ts

@@ -0,0 +1,67 @@
+// Type definitions for num 0.3.0
+// Project: https://github.com/defunctzombie/num
+// Definitions by: Michael Rojas <https://github.com/havelessbemore>
+
+declare namespace num {
+
+  export interface Num {
+    (value: number | string | Num): Num;
+    new (value: number | string | Num): Num;
+  }
+
+  export class Num {
+
+    constructor(value: number | string | Num);
+
+    // add {value} to our number and return a new num
+    add(value: number | string | Num): Num;
+
+    // subtract {value} from our number and return a new num
+    subtract(value: number | string | Num): Num;
+
+    // multiply our num by {value} and return a new num
+    mul(value: number | string | Num): Num;
+
+    // divide our num by {value} and return a new num
+    // note that `div` uses the precision of the numerator
+    //    num('1').div('3.0') -> 0
+    //    num('1.0').div('3') -> 0.3
+    div(value: number | string | Num): Num;
+
+    // return a new num that is the negative
+    neg(value: number | string | Num): Num;
+
+    // return a new num that is the absolute value
+    abs(value: number | string | Num): Num;
+
+    // compare our value to {value}. Return:
+    //    0 if self and value are equal
+    //    -1 if self < value
+    //    1 if self > value
+    cmp(value: number | string | Num): -1 | 0 | 1;
+
+    // return true if self < value
+    lt(value: number | string | Num): boolean;
+
+    // return true if self <= value
+    lte(value: number | string | Num): boolean;
+
+    // return true if self > value
+    gt(value: number | string | Num): boolean;
+
+    // return true if self >= value
+    gte(value: number | string | Num): boolean;
+
+    // return true if self == value
+    eq(value: number | string | Num): boolean;
+
+    // return true if self != value
+    ne(value: number | string | Num): boolean;
+
+    // set the precision for the number. Can be used to alter
+    // how many places after the decimal are relevant. Returns self
+    set_precision(precision: number): Num;
+  }
+}
+declare var Num: num.Num;
+export = Num;