Message

Error messages can be organized into templates.

The template supports #unless and #less conditional statements.

🚀Default error message

Error message templates support propName and value variables.

Key	Template	Description
param-required	'{{propName}}' is a required parameter
param-invalid-type	'{{propName}}' is a parameter in an invalid type
error-default-func	{{propName}}' default function execution error
error-default-value	'{{propName}}' default value type error
validate-invalid-func	'{{propName}}' is an invalid value	.valid() error message
validate-default-invalid	value of '{{propName}}' invalid	validate default error message

You can modify the default error message template.
This setting is applied globally.

Param	Type	Description
templateKey	String	-
template	String	-

const { Message } = require('aws-lambda-middleware')

Message.setTemplate('param-required', `'{{propName}}' is a required parameter`)

Error message templates support propName, value, option, and option key variables.

#unless, #less conditional statements.

length of '{{propName}}'{{#unless max}} can be from {{#unless min}}{{min}} {{/unless}}~ {{max}}{{/unless}}{{#less max}} must be {{option}}{{/less}}