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"access": "public", "description": "", "builtinExternal": true }, { "__docId__": 47, "kind": "external", "name": "Proxy", "externalLink": "https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Proxy", "memberof": "src/.external-ecmascript.js", "static": true, "longname": "src/.external-ecmascript.js~Proxy", "access": "public", "description": "", "builtinExternal": true }, { "__docId__": 48, "kind": "file", "name": "src/logger.js", "content": "/**\r\n * A class decorator that adds a logger object to class instances.\r\n * The logger object prepends a specified name to all log output.\r\n *\r\n * Unless you specify a custom `accessor`, the logger object is available via `this.logger` and you can use it as in `this.logger.warn('oh noes!')`.\r\n * A special case is `accessor: 'this'`- it leads to the log methods being available onthe decorated instance directly and you can use it as in `this.warn('oh noes!')`.\r\n *\r\n * @param {string|function} [name='logger'] - The name prefix. Prepended to all output of the created logger. If it is a function, the function should return a string.\r\n * @param {object} [config] - An optional configuration object.\r\n * @param {object|array} [config.backend = window.console] - The logger object that will be used. Can also be an array of logger objects.\r\n * @param {array} [config.functions = ['log', 'info', 'warn', 'error', 'trace', 'table', 'debug']] - An array of function names supported by the `logger` object..\r\n * @param {string} [config.accessor='logger'] - The name by which the logger object can be accessed on the decorated instance.\r\n * @param {function} [config.prefixer = (name) => `[${name}]`] - A function that creates the prefix. Receives the `name` string and should return a string.\r\n * @param {string|number} [config.level = debug] - A log level name. Should be either a number or one of the available `functions` (the array index is the numeric level), decides whether the message will be printed. E.g. the lowest level is `log` - only `logger.log()` will be printed, while the highest level is `debug` (last array element)\r\n * @return {bool} - Always returns `true`. (Allows usage as in `(args) => this.logger.log(args) && doSomething(args)`)\r\n *\r\n * @example\r\n * import React from 'react';\r\n * import logger from '@xailabs/logger';\r\n * @logger('App')\r\n * class App extends React.Component {\r\n * componentDidMount() {\r\n * this.logger.warn('watch out!'); // logs '[App] watch out!'\r\n * }\r\n * }\r\n */\r\nexport default function logger(name = 'logger', {\r\n backend = console,\r\n functions = ['log', 'info', 'warn', 'error', 'trace', 'table', 'debug', 'dir'],\r\n accessor = 'logger',\r\n prefixer = (name) => `[${name}]`,\r\n level = 'debug'\r\n} = {}) {\r\n return function decorateClass(target) {\r\n if (!target) {\r\n target = Object.create(null);\r\n accessor = 'this';\r\n }\r\n const customLogger = functions.reduce((result, fn) => {\r\n result[fn] = (function(...args) {\r\n const fnLevel = functions.indexOf(fn);\r\n const allowedLevel = typeof level === 'number' ? level : functions.indexOf(level);\r\n if (!allowedLevel || fnLevel > allowedLevel) {\r\n return;\r\n }\r\n const prefix = prefixer(typeof name === 'function' ? name({target, args}) : name);\r\n const logArgs = [prefix, ...args];\r\n const backends = Array.isArray(backend) ? backend : [backend];\r\n backends.forEach(backend => backend[fn].apply(backend, logArgs));\r\n return true;\r\n }).bind(result);\r\n return result;\r\n }, {});\r\n if (accessor === 'this') {\r\n Object.assign((target.prototype || target), customLogger);\r\n }\r\n else {\r\n (target.prototype || target)[accessor] = customLogger;\r\n }\r\n return target;\r\n };\r\n}\r\n", "static": true, "longname": "D:/Projects/xailabs@npm/logger/src/logger.js", "access": "public", "description": null, "lineNumber": 1 }, { "__docId__": 49, "kind": "function", "name": "logger", "memberof": "src/logger.js", "generator": false, "async": false, "static": true, "longname": "src/logger.js~logger", "access": "public", "export": true, "importPath": "@xailabs/logger/src/logger.js", "importStyle": "logger", "description": "A class decorator that adds a logger object to class instances.\nThe logger object prepends a specified name to all log output.\n\nUnless you specify a custom `accessor`, the logger object is available via `this.logger` and you can use it as in `this.logger.warn('oh noes!')`.\nA special case is `accessor: 'this'`- it leads to the log methods being available onthe decorated instance directly and you can use it as in `this.warn('oh noes!')`.", "examples": [ "import React from 'react';\nimport logger from '@xailabs/logger';\n@logger('App')\nclass App extends React.Component {\n componentDidMount() {\n this.logger.warn('watch out!'); // logs '[App] watch out!'\n }\n}" ], "lineNumber": 27, "params": [ { "nullable": null, "types": [ "string", "function" ], "spread": false, "optional": true, "defaultValue": "'logger'", "defaultRaw": "'logger'", "name": "name", "description": "The name prefix. Prepended to all output of the created logger. If it is a function, the function should return a string." }, { "nullable": null, "types": [ "object" ], "spread": false, "optional": true, "name": "config", "description": "An optional configuration object." }, { "nullable": null, "types": [ "object", "array" ], "spread": false, "optional": true, "defaultValue": " window.console", "defaultRaw": " window.console", "name": "config.backend", "description": "The logger object that will be used. Can also be an array of logger objects." }, { "nullable": null, "types": [ "array" ], "spread": false, "optional": true, "defaultValue": " ['log', 'info', 'warn', 'error', 'trace', 'table', 'debug']", "defaultRaw": " ['log', 'info', 'warn', 'error', 'trace', 'table', 'debug']", "name": "config.functions", "description": "An array of function names supported by the `logger` object.." }, { "nullable": null, "types": [ "string" ], "spread": false, "optional": true, "defaultValue": "'logger'", "defaultRaw": "'logger'", "name": "config.accessor", "description": "The name by which the logger object can be accessed on the decorated instance." }, { "nullable": null, "types": [ "function" ], "spread": false, "optional": true, "name": "config.prefixer", "description": "A function that creates the prefix. Receives the `name` string and should return a string." }, { "nullable": null, "types": [ "string", "number" ], "spread": false, "optional": true, "defaultValue": " debug", "defaultRaw": " debug", "name": "config.level", "description": "A log level name. Should be either a number or one of the available `functions` (the array index is the numeric level), decides whether the message will be printed. E.g. the lowest level is `log` - only `logger.log()` will be printed, while the highest level is `debug` (last array element)" } ], "return": { "nullable": null, "types": [ "bool" ], "spread": false, "description": "Always returns `true`. (Allows usage as in `(args) => this.logger.log(args) && doSomething(args)`)" } }, { "kind": "index", "content": "# @xailabs/logger\r\n\r\nA class decorator that adds a `logger` object to instances.\r\nThe logger object prepends a name to all of its output.\r\n\r\nVery usefull when working with many different components, or sources of log messages in general.\r\n\r\nDocumentation: [https://xailabs.github.io/logger/](https://xailabs.github.io/logger/)\r\n\r\n## Installation\r\n\r\n npm install @xailabs/logger\r\n\r\nor:\r\n\r\n yarn add @xailabs/logger\r\n\r\n## Examples\r\n\r\nDefault usage with [decorator syntax](https://www.npmjs.com/package/babel-plugin-transform-decorators-legacy):\r\n\r\n import {Component} from 'react';\r\n import logger from '@xailabs/logger';\r\n @logger('App')\r\n class App extends Component {\r\n componentDidMount() {\r\n this.logger.warn('watch out!'); // logs a warning '[App] watch out!'\r\n }\r\n }\r\n\r\nWithout decorator syntax\r\n\r\n class App extends Component {\r\n componentDidMount() {\r\n this.logger.log('ok');\r\n }\r\n }\r\n logger('App')(App);\r\n\r\n\r\nWithout target - creates a new logger object\r\n\r\n import {Component} from 'react';\r\n import createLogger from '@xailabs/logger';\r\n const logger = createLogger('App')();\r\n logger.info('ok');\r\n\r\nWith log level. (See `config.level` in the [docs](https://xailabs.github.io/logger/function/index.html#static-function-logger) for details)\r\n\r\n const logLevel = process.env.NODE_ENV === 'development' ? 'debug' : 'info';\r\n @logger('App', {level: logLevel})\r\n class App extends Component {\r\n componentDidMount() {\r\n this.logger.log('ok'); // logs in both production and development\r\n this.logger.info('ok'); // logs in both production and development\r\n this.logger.warn('watch out!'); // only logs in development\r\n }\r\n }\r\n\r\n\r\nUsing a function instead of a string as name - retrieves dynamic values\r\n\r\n @logger(() => new Date().toISOString())\r\n class App extends Component {\r\n componentDidMount() {\r\n this.log('ok'); // logs something like '[2017-08-01T16:37:14.444Z] ok'\r\n }\r\n } \r\n\r\nCustom accessor\r\n\r\n @logger('App', {accessor: 'logging'})\r\n class App extends Component {\r\n componentDidMount() {\r\n this.logging.log('ok'); // access via this.logging\r\n }\r\n } \r\n\r\nMagic 'this' accessor\r\n\r\n @logger('App', {accessor: 'this'})\r\n class App extends Component {\r\n componentDidMount() {\r\n this.log('ok'); // access via this.log() instead of this.something.log()\r\n }\r\n } \r\n\r\nCustom log backend:\r\n\r\n @logger('App', {backend: require('winston')})\r\n class App extends Component {\r\n componentDidMount() {\r\n this.logger.log('ok'); // logs using winston instead of the console\r\n }\r\n } \r\n\r\nMultiple log backends:\r\n\r\n @logger('App', {backend: [window.console, require('winston'), anotherCustomLogger})\r\n class App extends Component {\r\n componentDidMount() {\r\n this.logger.log('ok'); // logs to all the logger objects that have a \"log\" function\r\n }\r\n } \r\n", "longname": "D:\\Projects\\xailabs@npm\\logger\\README.md", "name": "./README.md", "static": true, "access": "public" }, { "kind": "packageJSON", "content": "{\r\n \"name\": \"@xailabs/logger\",\r\n \"version\": \"1.2.0\",\r\n \"description\": \"\",\r\n \"main\": \"lib/logger.js\",\r\n \"scripts\": {\r\n \"test\": \"babel-tape-runner test/**/*.test.js | faucet\",\r\n \"build\": \"babel src -d lib\",\r\n \"docs\": \"esdoc src\",\r\n \"prepublish\": \"npm test && npm run build\"\r\n },\r\n \"keywords\": [],\r\n \"author\": \"\",\r\n \"license\": \"ISC\",\r\n \"devDependencies\": {\r\n \"babel-cli\": \"^6.24.1\",\r\n \"babel-preset-env\": \"^1.6.0\",\r\n \"babel-tape-runner\": \"^2.0.1\",\r\n \"esdoc\": \"^1.0.1\",\r\n \"esdoc-standard-plugin\": \"^1.0.0\",\r\n \"faucet\": \"^0.0.1\",\r\n \"tape\": \"^4.8.0\"\r\n }\r\n}\r\n", "longname": "D:\\Projects\\xailabs@npm\\logger\\package.json", "name": "package.json", "static": true, "access": "public" } ]