{"id":15592193,"url":"https://github.com/derhuerst/key-map","last_synced_at":"2026-03-05T14:30:18.094Z","repository":{"id":57289161,"uuid":"56694414","full_name":"derhuerst/key-map","owner":"derhuerst","description":"Keep track of old keys when removing duplicates.","archived":false,"fork":false,"pushed_at":"2020-05-03T15:54:37.000Z","size":8,"stargazers_count":1,"open_issues_count":1,"forks_count":0,"subscribers_count":2,"default_branch":"master","last_synced_at":"2025-02-09T16:39:02.025Z","etag":null,"topics":["duplicates","object","rename"],"latest_commit_sha":null,"homepage":"https://github.com/derhuerst/key-map","language":"JavaScript","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"isc","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/derhuerst.png","metadata":{"files":{"readme":"readme.md","changelog":null,"contributing":null,"funding":null,"license":"license.md","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null}},"created_at":"2016-04-20T14:34:20.000Z","updated_at":"2020-05-03T15:54:35.000Z","dependencies_parsed_at":"2022-08-29T10:50:46.419Z","dependency_job_id":null,"html_url":"https://github.com/derhuerst/key-map","commit_stats":null,"previous_names":[],"tags_count":1,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/derhuerst%2Fkey-map","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/derhuerst%2Fkey-map/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/derhuerst%2Fkey-map/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/derhuerst%2Fkey-map/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/derhuerst","download_url":"https://codeload.github.com/derhuerst/key-map/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":239890164,"owners_count":19713924,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["duplicates","object","rename"],"created_at":"2024-10-02T23:57:56.146Z","updated_at":"2026-03-05T14:30:18.048Z","avatar_url":"https://github.com/derhuerst.png","language":"JavaScript","funding_links":[],"categories":[],"sub_categories":[],"readme":"# key-map 🔜\n\n**When you remove duplicates in a collection** mapped by keys, you may want to **keep track of old keys** and their new equivalent.\n\n[![npm version](https://img.shields.io/npm/v/key-map.svg)](https://www.npmjs.com/package/key-map)\n[![build status](https://img.shields.io/travis/derhuerst/key-map.svg)](https://travis-ci.org/derhuerst/key-map)\n[![dependency status](https://img.shields.io/david/derhuerst/key-map.svg)](https://david-dm.org/derhuerst/key-map)\n[![dev dependency status](https://img.shields.io/david/dev/derhuerst/key-map.svg)](https://david-dm.org/derhuerst/key-map#info=devDependencies)\n![ISC-licensed](https://img.shields.io/github/license/derhuerst/key-map.svg)\n[![chat on gitter](https://badges.gitter.im/derhuerst.svg)](https://gitter.im/derhuerst)\n\n\n## Installing\n\n```\nnpm install key-map\n```\n\n\n## Usage\n\n```js\nconst keyMap = require('key-map')\nconst m = keyMap(['a', 'b', 'c'])\n\nm.get('a') // -\u003e 'a'\nm.get('b') // -\u003e 'b'\nm.get('c') // -\u003e 'c'\n\nm.map('c', 'b') // map c to b\nm.map('b', 'a') // map b to a\n\nm.get('a') // -\u003e 'a'\nm.get('b') // -\u003e 'a'\nm.get('c') // -\u003e 'a'\n```\n\n\n## Contributing\n\nIf you **have a question**, **found a bug** or want to **propose a feature**, have a look at [the issues page](https://github.com/derhuerst/key-map/issues).\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fderhuerst%2Fkey-map","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fderhuerst%2Fkey-map","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fderhuerst%2Fkey-map/lists"}