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It can \nbe applied in both node and browser environments.\n\n## Table of Contents\n\n- [Installation](#installation)\n- [Usage](#usage)\n\t- [Constructor Registration](#constructor-registration)\n\t- [Object Registration](#object-registration)\n\t- [Dependency Injection](#dependency-injection)\n- [Changelog](#changelog)\n\n## Installation\n\nExecute this command in your environment. \n\n```\nnpm install @brainstaff/injector --save\n```\nor\n\n```\nyarn add @brainstaff/injector\n```\n\n[Table of Contents](#table-of-contents)\n\n## Usage\n\n### Constructor Registration\n\nOne is able to register constructor for a particular class and create\ninstances of it:\n\n```js\nimport Injector from \"@brainstaff/injector\";\nimport { asClass } from \"@brainstaff/injector\";\n\nclass Foo {\n constructor() {\n console.log(\"Creating instance of Foo.\");\n }\n \n get dependencies() {\n return [];\n }\n}\n\nconst injector = new Injector();\ninjector.register(\"foo\", asClass(Foo));\n\n// Resolve class by its registered name\nconst foo1 = injector.resolve(\"foo\");\n\n// Resolve class by its constructor reference\nconst foo2 = injector.resolve(Foo);\n```\n\nExpected output will be:\n\n```\n[Tue Mar 28 2017 08:39:53 GMT+0300 (MSK)] [Injector] Registering 'foo' component.\nCreating instance of Foo.\nCreating instance of Foo.\n```\n\n[Table of Contents](#table-of-contents)\n\n### Object Registration\n\nOne is able to register pure object.\n\n```js\nimport Injector from \"@brainstaff/injector\";\nimport { asValue } from \"@brainstaff/injector\";\n\nconst foo = {\n name: \"Foo object \" + Math.round(Math.random() * 10)\n};\n\nconst injector = new Injector();\ninjector.register(\"foo\", asValue(foo));\n\n// Resolve registered object\nconst foo1 = injector.resolve(\"foo\");\nconsole.log(foo1);\n\n// Resolve registered object\nconst foo2 = injector.resolve(\"foo\");\nconsole.log(foo2);\n\n// We are expecting same object\nconsole.log(foo1 === foo2 ? \n \"Same object resolved.\" : \n \"WARNING: unexpected resolved object.\")\n```\n\nExpected output will be:\n\n```\n[Tue Mar 28 2017 08:46:31 GMT+0300 (MSK)] [Injector] Registering 'foo' component.\n{ name: 'Foo object 5' }\n{ name: 'Foo object 5' }\nSame object resolved.\n\n```\n\n[Table of Contents](#table-of-contents)\n\n### Dependency Injection\n\nNow it's time to demonstrate dependency injection.\n\n```js\nimport Injector from \"@brainstaff/injector\";\n\nclass Foo {\n constructor() {\n console.log(\"Creating instance of Foo.\");\n }\n \n get dependencies() {\n return [];\n }\n}\n\nclass Bar {\n constructor(dependencies) {\n console.log(\"Creating instance of Bar.\");\n Object.assign(this, dependencies);\n }\n \n get dependencies() {\n return [\n \"foo\"\n ];\n }\n}\n\nconst injector = new Injector();\ninjector.register(\"foo\", Foo);\ninjector.register(\"bar\", Bar);\n\n// Resolve class by its registered name\nconst bar1 = injector.resolve(\"bar\");\n\n// Bar contains injected foo\nconsole.log(bar1);\n\n// Resolve class by its constructor reference\nconst bar2 = injector.resolve(Bar);\n\n// Bar contains injected foo\nconsole.log(bar2);\n```\n\nExpected output will be:\n\n```\n[Wed Mar 29 2017 15:27:08 GMT+0300 (MSK)] [Injector] Registering 'foo' component.\n[Wed Mar 29 2017 15:27:08 GMT+0300 (MSK)] [Injector] Registering 'bar' component.\nCreating instance of Foo.\nCreating instance of Bar.\nBar { foo: Foo {} }\nCreating instance of Foo.\nCreating instance of Bar.\nBar { foo: Foo {} }\n```\n\nAlso, usage examples can be found in `./examples` folder.\n\n[Table of Contents](#table-of-contents)\n\n## Changelog\n\n### v2.0.0\n\n- Introduced definitions (asValue, asClass, asFunction).\n- Switched to rollup from webpack.\n\n### v1.0.0\n\n- Initial injector implementation.\n\n[Table of Contents](#table-of-contents)\n","readmeFilename":"README.md"}