feat(twconf): Use eerror in twconf class (index.js).

src/index.js

@@ -1,3 +1,4 @@
+import EError from 'eerror';
 import * as Types from './types';
 import ConfigField from './config-field';
 import envParser from './env-parser';
@@ -66,9 +67,9 @@ class TwConf {
  this.skeleton.forEach((value, key) => {
  if (!(value instanceof ConfigField)) {
  if (typeof value !== 'object') {
- const err = new TypeError('Value of ConfigRule must be a object');
- err.field = key;
- throw err;
+ throw new EError('Config rule must be an object', {
+  field: key,
+ });
  }
 
  this.skeleton.set(key, new ConfigField(value));
@@ -101,9 +102,7 @@ class TwConf {
  });
 
  if (errors.length) {
- const newError = new Error('Validation errors');
- newError.errors = errors;
- throw newError;
+ throw new EError('Validation errors', { errors });
  }
  }
 }