simple-unless

✅ The extends: 'recommended' property in a configuration file enables this rule.

This rule strongly advises against {{unless}} blocks in the following situations:

Common solutions are to use an {{if}} block, or refactor potentially confusing logic within the template.

Examples

This rule forbids the following:

{{!-- `unless` condition has a template helper  --}}

{{unless (if true) "This is not recommended"}}

{{!-- `unless` statement has an `else` block  --}}

{{#unless bandwagoner}}
  Go Niners!
{{else}}
  Go Seahawks!
{{/unless}}

{{!-- conditional statement has an `else unless` block  --}}

{{#if condition}}
  Hello
{{else unless otherCondition}}
  World
{{/unless}}

This rule allows the following:

{{#if bandwagoner}}
  Go Blue Jays!
{{else}}
  Go Mariners!
{{/if}}

{{#unless condition}}
  Hello World
{{/unless}}

The following values are valid configuration:

boolean -- true for enabled / false for disabled
object --
- allowlist -- array - ['or'] for specific helpers / [] for wildcard
- denylist -- array - ['or'] for specific helpers / [] for none
- maxHelpers -- number - use -1 for no limit