{"id":20509506,"url":"https://github.com/aminnairi/node-decode","last_synced_at":"2026-04-22T09:07:27.392Z","repository":{"id":57097156,"uuid":"351436066","full_name":"aminnairi/node-decode","owner":"aminnairi","description":"Check that your data meet your 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unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"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":["check","data","decode","expectations","schema"],"created_at":"2024-11-15T20:25:10.195Z","updated_at":"2026-04-22T09:07:27.376Z","avatar_url":"https://github.com/aminnairi.png","language":"JavaScript","funding_links":[],"categories":[],"sub_categories":[],"readme":"# node-decode\n\nCheck that your data meet your expectations.\n\n[![Test](https://github.com/aminnairi/node-decode/actions/workflows/test.yaml/badge.svg?branch=latest)](https://github.com/aminnairi/node-decode/actions/workflows/test.yaml) [![Publish](https://github.com/aminnairi/node-decode/actions/workflows/publish.yaml/badge.svg)](https://github.com/aminnairi/node-decode/actions/workflows/publish.yaml)\n\n## Requirements\n\n- Node\n\n## Usage\n\n### Simple\n\n```console\n$ npm install @aminnairi/decode\n$ touch index.mjs\n```\n\n```javascript\nimport {decode} from \"@aminnairi/decode\";\n\nconst schema    = \"string\";\nconst goodData  = \"Hello world\";\nconst badData   = 123;\n\nconsole.log(decode(schema, goodData));\nconsole.log(decode(schema, badData));\n```\n\n```console\n$ node index.mjs\ntrue\nfalse\n```\n\n### Array\n\n```console\n$ npm install @aminnairi/decode\n$ touch index.mjs\n```\n\n```javascript\nimport {decode} from \"@aminnairi/decode\";\n\nconst schema    = [\"string\"];\nconst goodData  = [\"Hello\", \"world\"];\nconst badData   = [\"Hello\", 123];\n\nconsole.log(decode(schema, goodData));\nconsole.log(decode(schema, badData));\n```\n\n```console\n$ node index.mjs\ntrue\nfalse\n```\n\n### Object\n\n```console\n$ npm install @aminnairi/decode\n$ touch index.mjs\n```\n\n```javascript\nimport {decode} from \"@aminnairi/decode\";\n\nconst schema    = {user: \"string\", age: \"number\"};\nconst goodData  = {user: \"john\", age: 42};\nconst badData   = {user: \"jane\", age: \"24\"};\n\nconsole.log(decode(schema, goodData));\nconsole.log(decode(schema, badData));\n```\n\n```console\n$ node index.mjs\ntrue\nfalse\n```\n\n### Object (loose)\n\n```console\n$ npm install @aminnairi/decode\n$ touch index.mjs\n```\n\n```javascript\nimport {decode} from \"@aminnairi/decode\";\n\nconst schema    = {user: \"string\", age: \"number\"};\nconst goodData  = {user: \"john\", age: 42, isAdmin: false};\nconst badData   = {user: \"jane\", age: \"24\", isAdmin: false};\n\nconsole.log(decode(schema, goodData));\nconsole.log(decode(schema, badData));\n```\n\n```console\n$ node index.mjs\ntrue\nfalse\n```\n\n### Array of objects\n\n```console\n$ npm install @aminnairi/decode\n$ touch index.mjs\n```\n\n```javascript\nimport {decode} from \"@aminnairi/decode\";\n\nconst schema    = [{user: \"string\", age: \"number\"}];\nconst goodData  = [{user: \"john\", age: 42}, {user: \"jane\", age: 24}];\nconst badData   = [{user: \"john\", age: \"42\"}, {user: \"jane\", age: 24}];\n\nconsole.log(decode(schema, goodData));\nconsole.log(decode(schema, badData));\n```\n\n```console\n$ node index.mjs\ntrue\nfalse\n```\n\n## Example\n\n```console\n$ npm install node-fetch @aminnairi/decode\n$ touch index.mjs\n```\n\n```javascript\nimport fetch from \"node-fetch\";\nimport {decode} from \"@aminnairi/decode\";\n\nconst usersSchema = [{\n  id: \"number\",\n  name: \"string\",\n  username: \"string\",\n  email: \"string\",\n  address: {\n    street: \"string\",\n    suite: \"string\",\n    city: \"string\",\n    zipcode: \"string\",\n    geo: {\n      lat: \"string\",\n      lng: \"string\"\n    }\n  },\n  phone: \"string\",\n  website: \"string\",\n  company: {\n    name: \"string\",\n    catchPhrase: \"string\",\n    bs: \"string\"\n  }\n}];\n\nfetch(\"https://jsonplaceholder.typicode.com/users/\").then(response =\u003e {\n  return response.json();\n}).then(users =\u003e {\n  if (!decode(usersSchema, users)) {\n    throw new Error(\"Bad response from the server (has the API changed?)\");\n  }\n  console.log(\"Do something with the users.\");\n}).catch(({message}) =\u003e {\n  console.error(message);\n});\n```\n\n```console\n$ node index.mjs\nDo something with the users.\n```\n\n## Changelog\n\nSee [`CHANGELOG.md`](./CHANGELOG.md).\n\n## Contributing\n\nSee [`CONTRIBUTING.md`](./CONTRIBUTING.md).\n\n## License\n\nSee 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