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import { BigNumber } from '@0x/utils';
export * from './transformers';
export * from './constants';
/**
* If the given BigNumber is not null, returns the string representation of that
* number. Otherwise, returns null.
* @param n The number to convert.
*/
export function bigNumbertoStringOrNull(n: BigNumber): string | null {
if (n == null) {
return null;
}
return n.toString();
}
/**
* If value is null or undefined, returns null. Otherwise converts value to a
* BigNumber.
* @param value A string or number to be converted to a BigNumber
*/
export function toBigNumberOrNull(value: string | number | null): BigNumber | null {
switch (value) {
case null:
case undefined:
return null;
default:
return new BigNumber(value);
}
}
/**
* Logs an error by intelligently checking for `message` and `stack` properties.
* Intended for use with top-level immediately invoked asynchronous functions.
* @param e the error to log.
*/
export function handleError(e: any): void {
if (e.message != null) {
// tslint:disable-next-line:no-console
console.error(e.message);
} else {
// tslint:disable-next-line:no-console
console.error('Unknown error');
}
if (e.stack != null) {
// tslint:disable-next-line:no-console
console.error(e.stack);
} else {
// tslint:disable-next-line:no-console
console.error('(No stack trace)');
}
process.exit(1);
}
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