No Identity Map

SuggestionAuto-fixable

small-rules/no-identity-map

Disallow pointless identity `.map()` calls that return the parameter unchanged

Diagnostic Messages

identityArrayMap

Pointless identity `.map()` call on Array. Use `table.clone(array)` or `[...array]` instead.

identityBindingMap

Pointless identity `.map()` call on Binding. Use the original binding directly.

Configuration

This rule accepts one options object after the severity.

bindingPatternsOptional

Variable name patterns to recognize as Bindings (case insensitive)

Type

Array<string>

Default

1 item

{
  "jsPlugins": [
    "@pobammer-ts/small-rules"
  ],
  "rules": {
    "small-rules/no-identity-map": [
      "error",
      {
        "bindingPatterns": [
          "binding"
        ]
      }
    ]
  }
}

Examples

Identity binding map

scaleBinding.map(v => v)

After auto-fix

scaleBinding

Transforming map callback

binding.map(v => v + 1)