@dashevo/dashcore-lib/lib/util/preconditions.js

A pure and powerful JavaScript Dash library.

/* eslint-disable */
// TODO: Remove previous line and work through linting issues at next edit

'use strict';

var errors = require('../errors');
var _ = require('lodash');

module.exports = {
  checkState: function (condition, message) {
    if (!condition) {
      throw new errors.InvalidState(message);
    }
  },
  checkArgument: function (condition, argumentName, message, docsPath) {
    if (!condition) {
      throw new errors.InvalidArgument(argumentName, message, docsPath);
    }
  },
  checkArgumentType: function (argument, type, argumentName) {
    argumentName = argumentName || '(unknown name)';
    if (_.isString(type)) {
      if (type === 'Buffer') {
        if (!Buffer.isBuffer(argument)) {
          throw new errors.InvalidArgumentType(argument, type, argumentName);
        }
      } else if (typeof argument !== type) {
        throw new errors.InvalidArgumentType(argument, type, argumentName);
      }
    } else {
      if (!(argument instanceof type)) {
        throw new errors.InvalidArgumentType(argument, type.name, argumentName);
      }
    }
  },
};