es-x/no-map-prototype-getorinsert

disallow the Map.prototype.getOrInsert method

• ✅ The following configurations enable this rule: no-new-in-esnext and no-upsert

This rule reports ES2026 Map.prototype.getOrInsert method as errors.

💡 Examples

⛔ Examples of incorrect code for this rule:

🔧 Options

This rule has an option.

{
  "rules": {
    "es-x/no-map-prototype-getorinsert": [
      "error",
      {
        "aggressive": false,
        "allowTestedProperty": false
      }
    ]
  }
}

aggressive: boolean

Configure the aggressive mode for only this rule. This is prior to the settings['es-x'].aggressive setting.

allowTestedProperty: boolean

Configure the allowTestedProperty mode for only this rule. This is prior to the settings['es-x'].allowTestedProperty setting.

🚀 Version

This rule was introduced in v9.4.0.

📚 References

• Rule source
• Test source