toDouble

Declaration

static Double toDouble();

Parameters

• value:

  A numeric or numeric string to convert or validate.

Return Value

If the value passes validation, this function returns a Double; otherwise it throws ValueNotDoubleError. A value passes validation if it’s a number in the range of a double-precision 64-bit IEEE 754 floating-point value. toDouble can also accept a numeric string that represents a number that requires more precision than can be achieved with a JavaScript number.

Discussion

In TypeScript, Double is a branded BigNumber type. In JavaScript, it’s a BigNumber. BigNumber is from the bignumber.js package.

import { toDouble } from "@apple/cktool.database";