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@putout/plugin-remove-useless-mapping-identifiers [![NPM version][NPMIMGURL]][NPMURL] [![Dependency Status][DependencyStatusIMGURL]][DependencyStatusURL]\n\n[NPMIMGURL]: https://img.shields.io/npm/v/@putout/plugin-remove-useless-mapping-identifiers.svg?style=flat&longCache=true\n[NPMURL]: https://npmjs.org/package/@putout/plugin-remove-useless-mapping-identifiers \"npm\"\n[DependencyStatusURL]: https://david-dm.org/coderaiser/putout?path=packages/plugin-remove-useless-mapping-identifiers\n[DependencyStatusIMGURL]: https://david-dm.org/coderaiser/putout.svg?path=packages/plugin-remove-useless-mapping-identifiers\n\n`putout` plugin adds ability to remove useless [mapping modifiers](https://www.typescriptlang.org/docs/handbook/2/mapped-types.html#mapping-modifiers).\n\n## Install\n\n```\nnpm i @putout/plugin-remove-useless-mapping-identifiers\n```\n\n## Rule\n\n```json\n{\n    \"rules\": {\n        \"remove-useless-mapping-identifiers\": \"on\"\n    }\n}\n```\n\n## ❌ Incorrect code example\n\n```ts\ntype SuperType = {\n    [Key in keyof Type]+?: Type[Key];\n}\n```\n\n## ✅ Correct code Example\n\n```ts\ntype SuperType = {\n    [Key in keyof Type]?: Type[Key];\n}\n```\n\n## License\n\nMIT\n","_attachments":{},"homepage":"https://github.com/coderaiser/putout/tree/v24.0.2/packages/plugin-typescript#remove-useless-mapping-modifiers","bugs":{"url":"https://github.com/coderaiser/putout/issues"},"license":"MIT"}