{"id":234,"date":"2019-10-03T18:06:53","date_gmt":"2019-10-03T09:06:53","guid":{"rendered":"https:\/\/weseek.co.jp\/tech\/?p=234"},"modified":"2023-04-17T10:29:48","modified_gmt":"2023-04-17T01:29:48","slug":"%e3%82%a4%e3%83%9e%e3%83%89%e3%82%ad%e3%81%ae-javascript-%e9%96%8b%e7%99%ba%e3%81%a7%e4%bd%bf%e3%81%88%e3%82%8b%e3%80%81%e3%83%aa%e3%83%a2%e3%83%bc%e3%83%88%e3%83%87%e3%83%90%e3%83%83%e3%82%b0-2","status":"publish","type":"post","link":"https:\/\/weseek.co.jp\/tech\/234\/","title":{"rendered":"JavaScript\u958b\u767a\u3067\u4f7f\u3048\u308b\u30ea\u30e2\u30fc\u30c8\u30c7\u30d0\u30c3\u30b0\u3068\u30ed\u30ac\u30fc\u306eTips |\u4e2d\u7de8"},"content":{"rendered":"<p>SEROKU \u306e\u958b\u767a\u3092\u4f8b\u306b\u3001\u5f0a\u793e\u3067\u4f7f\u3063\u3066\u3044\u308b\u30ea\u30e2\u30fc\u30c8\u30c7\u30d0\u30c3\u30b0\u3068\u30ed\u30ac\u30fc\u306e Tips \u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<br \/>\n\u5f53\u8a18\u4e8b\u306f 2018 \u5e74\u3068\u904e\u53bb\u306e\u8a18\u4e8b\u3067\u3059\u304c\u3001\u73fe\u5728\u3067\u3082\u5fdc\u7528\u53ef\u80fd\u306a Tips \u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u8a18\u4e8b\u306e\u6700\u5f8c\u306b\u95a2\u9023\u8a18\u4e8b\u3092\u63b2\u8f09\u3057\u3066\u3044\u307e\u3059\u3002\u3088\u308d\u3057\u3051\u308c\u3070\u3054\u53c2\u8003\u306b\u3069\u3046\u305e\u3002<\/p>\n<hr \/>\n<p>\u6848\u4ef6\u3068\u3057\u3066\u3082 OSS \u6210\u679c\u7269\u3068\u3057\u3066\u3082\u3001JavaScript \u3092\u5229\u7528\u3059\u308b\u30b7\u30c1\u30e5\u30a8\u30fc\u30b7\u30e7\u30f3\u306f\u5897\u3048\u7d9a\u3051\u3066\u3044\u307e\u3059\u3002\u307e\u3060\u307e\u3060\u67af\u308c\u305f\u8a00\u8a9e\u3068\u306f\u8a00\u3044\u96e3\u3044\u72b6\u6cc1\u3067\u3001\u4f7f\u308f\u308c\u308b\u30d0\u30fc\u30b8\u30e7\u30f3\u3082 ES5 \u304b\u3089 ES7 \u307e\u3067\u9032\u5316\u3092\u7d9a\u3051\u3001\u65b0\u3057\u3044\u6587\u5b57\u5217\u30ea\u30c6\u30e9\u30eb\u3084 async\/await \u306e\u3088\u3046\u306a\u300c\u30a4\u30de\u30c9\u30ad\u306e JavaScript \u306e\u66f8\u304d\u65b9\u300d\u3092\u7d39\u4ecb\u3059\u308b\u8a18\u4e8b\u306f\u591a\u3044\u4e2d\u3001\u30c7\u30d0\u30c3\u30b0\u306f\u3053\u3046\u3042\u308b\u3079\u304d\u3068\u3044\u3046\u60c5\u5831\u306f\u6bd4\u8f03\u7684\u5c11\u306a\u3044\u3088\u3046\u306b\u601d\u3044\u307e\u3059\u3002<\/p>\n<p>\u672c\u8a18\u4e8b\u306e\u524d\u7de8\u306b\u3042\u305f\u308b\u300c<a href=\"https:\/\/weseek.co.jp\/tech\/296\/\">\u30a4\u30de\u30c9\u30ad\u306e JavaScript \u958b\u767a\u3067\u4f7f\u3048\u308b\u3001\u30ea\u30e2\u30fc\u30c8\u30c7\u30d0\u30c3\u30b0\u3068\u30ed\u30ac\u30fc\u306e Tips (\u524d\u7de8)<\/a>\u300d\u3067\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u958b\u767a\u306b\u65bc\u3051\u308b\u30c7\u30d0\u30c3\u30ac\u3001\u30ed\u30ac\u30fc\u306e\u5927\u5207\u3055\u3068\u3001\u4ed6\u306e\u8a00\u8a9e\u30fb\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3068\u6bd4\u3079\u305f\u969b\u306e JavaScript \u958b\u767a\u74b0\u5883\u306b\u65bc\u3051\u308b\u30d3\u30cf\u30a4\u30f3\u30c9\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>\u672c\u8a18\u4e8b\u3067\u306f\u3044\u3088\u3044\u3088 JavaScript \u306e\u4e16\u754c\u3067\u306e\u7406\u60f3\u7684\u306a\u30ed\u30ac\u30fc\u306e\u5177\u4f53\u7684\u306a\u8a2d\u5b9a\u65b9\u6cd5\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<p><!--more--><\/p>\n\n<h1>\u7406\u60f3\u306e\u4e16\u754c<\/h1>\n<p>\u307e\u305a\u306f\u524d\u7de8\u3067\u63b2\u3052\u305f\u30b4\u30fc\u30eb\u306e\u518d\u63b2\u3067\u3059\u3002<\/p>\n<h2>\u5bfe\u8c61\u30b7\u30b9\u30c6\u30e0<\/h2>\n<p>\u4ee5\u4e0b\u306e3\u3064\u306e\u30b7\u30ca\u30ea\u30aa\u3092\u30ab\u30d0\u30fc\u3059\u308b\u3053\u3068\u306b\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>\n<p>\u30b7\u30ca\u30ea\u30aaA<\/p>\n<ul>\n<li>node.js (Express)<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u30b7\u30ca\u30ea\u30aaB<\/p>\n<ul>\n<li>node.js (Express) + webpack\/babel \u306b\u3088\u308b\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30d3\u30eb\u30c9<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u30b7\u30ca\u30ea\u30aaC<\/p>\n<ul>\n<li>next.js on Express<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>\u3084\u308a\u305f\u3044\u3053\u3068<\/h2>\n<ul>\n<li>\n<p>\u8a18\u8ff0\u5074<\/p>\n<ul>\n<li>\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30b5\u30a4\u30c9\u4e21\u65b9\u3067\u540c\u3058\u30ed\u30b0\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u5229\u7528\u3067\u304d\u308b<\/li>\n<li>\u30ed\u30b0\u30ec\u30d9\u30eb\u3092\u6307\u5b9a\u3057\u305f\u30ed\u30b0\u51fa\u529b\u884c\u306e\u8a18\u8ff0\u304c\u3067\u304d\u308b<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u51fa\u529b\u5074<\/p>\n<ul>\n<li>\n<p>\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30b5\u30a4\u30c9\u4e21\u65b9\u3067\u540c\u3058\u30ed\u30b0\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u5229\u7528\u3067\u304d\u308b<\/p>\n<\/li>\n<li>\n<p>development, production \u7b49\u306e\u74b0\u5883\u7528\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3067\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u6319\u52d5\u3092\u8a2d\u5b9a\u3067\u304d\u308b<\/p>\n<ul>\n<li>\u74b0\u5883\u5909\u6570\u8a2d\u5b9a\u306b\u3088\u308a\u3001\u4e0a\u8a18\u3092\u4e00\u6642\u7684\u306b\u5909\u66f4\u3067\u304d\u308b<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u30d7\u30ed\u30c0\u30af\u30c8\u5168\u4f53\u3067\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u30ed\u30b0\u51fa\u529b\u30ec\u30d9\u30eb\u3092\u8a2d\u5b9a\u3067\u304d\u308b<\/p>\n<\/li>\n<li>\n<p>\u30ed\u30b0\u306e\u30cd\u30fc\u30e0\u30b9\u30da\u30fc\u30b9\u3054\u3068\u306b\u30ed\u30b0\u51fa\u529b\u30ec\u30d9\u30eb\u3092\u8a2d\u5b9a\u3067\u304d\u308b<\/p>\n<\/li>\n<li>\n<p>development, production \u7b49\u306e\u74b0\u5883\u306b\u5fdc\u3058\u3066\u51fa\u529b\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u5909\u66f4\u3067\u304d\u308b<\/p>\n<ul>\n<li>development \u74b0\u5883\u3067\u306f\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3055\u308c\u305f\u30ed\u30b0\u51fa\u529b<\/li>\n<li>production \u74b0\u5883\u4e0b\u3067\u306f JSON \u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u51fa\u529b\u306b\u3088\u308b\u9ad8\u901f\u306a\u30ed\u30b0\u51fa\u529b<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u904e\u53bb\u306e\u8cc7\u7523\u306e\u6709\u52b9\u5229\u7528<\/p>\n<ul>\n<li>\u4eca\u307e\u3067\u8a18\u8ff0\u3055\u308c\u305f <a href=\"https:\/\/www.npmjs.com\/package\/debug\">debug<\/a> \u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u3088\u308b\u8a18\u8ff0\u3092\u5909\u66f4\u3059\u308b\u3053\u3068\u306a\u304f\u3001\u65b0\u3057\u3044\u30ed\u30ae\u30f3\u30b0\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u3088\u308b\u51fa\u529b\u3092\u53ef\u80fd\u306b\u3059\u308b<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h1>\u5229\u7528\u30e9\u30a4\u30d6\u30e9\u30ea\u9078\u5b9a<\/h1>\n<p>node.js \u74b0\u5883\u5411\u3051\u306e\u30ed\u30ac\u30fc\u3067\u306f\u3001<a href=\"https:\/\/github.com\/winstonjs\/winston\">winston<\/a>\u3001<a href=\"https:\/\/github.com\/trentm\/node-bunyan\">Bunyan<\/a>\u3001<a href=\"https:\/\/github.com\/log4js-node\/log4js-node\">log4js<\/a>\u3001<a href=\"https:\/\/github.com\/pinojs\/pino\">pino<\/a> \u3042\u305f\u308a\u304c\u6709\u540d\u51e6\u3067\u3059\u3002<\/p>\n<p>npm \u306e weekly download, Github \u306e\u30b9\u30bf\u30fc\u6570\u3067\u8a00\u3048\u3070\u3001\u52e2\u529b\u56f3\u306f 2018\/08 \u73fe\u5728\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>npm package<\/th>\n<th>License<\/th>\n<th>weekly download<\/th>\n<th>Github stars<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><a href=\"https:\/\/www.npmjs.com\/package\/winston\">Winston<\/a><\/td>\n<td>MIT<\/td>\n<td>2,165,220<\/td>\n<td>10,998<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/www.npmjs.com\/package\/log4js\">log4js<\/a><\/td>\n<td>Apache-2.0<\/td>\n<td>1,199,467<\/td>\n<td>3,321<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/www.npmjs.com\/package\/bunyan\">Bunyan<\/a><\/td>\n<td>MIT<\/td>\n<td>372,873<\/td>\n<td>5,238<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/www.npmjs.com\/package\/pino\">pino<\/a><\/td>\n<td>MIT<\/td>\n<td>91,535<\/td>\n<td>2,873<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>pino (\u9078\u5916)<\/h2>\n<p>\u4e0a\u8a18\u306e\u3046\u3061\u3001pino \u306f\u7b46\u8005\u3082\u5b9f\u969b\u306b Production \u74b0\u5883\u3067\u5229\u7528\u3057\u305f\u3053\u3068\u304c\u3042\u308a\u3001\u305d\u306e\u51e6\u7406\u901f\u5ea6\u306f\u7d20\u6674\u3089\u3057\u3044\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002Extreme Mode \u306e\u767a\u60f3\u306a\u3069\u3082\u8208\u5473\u6df1\u304f\u3001\u8a2d\u8a08\u3068 API \u53cc\u65b9\u304b\u3089\u30b9\u30d4\u30fc\u30c9\u306b\u5bfe\u3059\u308b\u3053\u3060\u308f\u308a\u304c\u306b\u3058\u307f\u51fa\u3066\u3044\u307e\u3057\u305f\u3002 Github \u306e Issue \u306e\u958b\u767a\u30b9\u30bf\u30c3\u30d5\u306e\u30b9\u30c8\u30a4\u30c3\u30af\u3055\u3082\u7279\u5fb4\u7684\u3067\u3059\u3002<\/p>\n<p>\u305f\u3060\u3001\u30ed\u30b0\u30ec\u30d9\u30eb\u3068\u51fa\u529b\u5148(\u51fa\u529b\u65b9\u6cd5)\u306e\u8a2d\u5b9a\u304c\u4ed6\u30e9\u30a4\u30d6\u30e9\u30ea\u3068\u6bd4\u3079\u3066\u8ca7\u5f31\u3067\u3001\u4eca\u56de\u306e\u7406\u60f3\u306e\u4e16\u754c\u3092\u5b9f\u73fe\u3059\u308b\u4e0a\u3067\u8db3\u67b7\u3068\u306a\u3063\u305f\u305f\u3081\u3001\u9078\u5916\u3068\u3057\u307e\u3057\u305f\u3002<\/p>\n<h2>log4js (\u9078\u5916)<\/h2>\n<p>log4js \u306f\u540d\u524d\u304b\u3089\u3082\u5206\u304b\u308b\u3068\u304a\u308a\u3001log4j \u3092\u610f\u8b58\u3057\u305f\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u3059\u3002Appender \u3084 Layouts \u306a\u3069\u3001Java \u754c\u9688\u306e\u30a8\u30f3\u30b8\u30cb\u30a2\u306b\u306f\u6982\u5ff5\u7684\u306b\u99b4\u67d3\u307f\u3084\u3059\u3044\u3082\u306e\u3068\u8a00\u3048\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n<p>\u3053\u3061\u3089\u306f\u6a5f\u80fd\u7684\u306b\u306f\u554f\u984c\u306a\u3044\u3082\u306e\u306e\u3001\u30d6\u30e9\u30a6\u30b6\u5229\u7528\u5411\u3051\u306e\u5468\u8fba\u30e9\u30a4\u30d6\u30e9\u30ea\u304c\u898b\u5f53\u305f\u3089\u306a\u304b\u3063\u305f\u3053\u3068\u304b\u3089\u9078\u5916\u3068\u3057\u307e\u3057\u305f\u3002<\/p>\n<h2>Bunyan \u3092\u63a1\u7528<\/h2>\n<p>\u6b8b\u308b2\u3064\u3001Winston \u3068 Bunyan\u306f\u6a5f\u80fd\u7684\u306b\u306f\u3069\u308c\u3082\u7533\u3057\u5206\u3042\u308a\u307e\u305b\u3093\u3002\u4eca\u56de\u306f\u52e2\u529b\u56f3\u3067\u306f3\u756a\u624b(Github stars \u3067\u306f2\u756a\u624b)\u3067\u3042\u308b <strong>Bunyan<\/strong> (\u30d0\u30cb\u30e4\u30f3\u3068\u8aad\u3080\u3089\u3057\u3044\u3067\u3059) \u3092\u63a1\u7528\u3059\u308b\u3053\u3068\u306b\u3057\u307e\u3059\u3002<\/p>\n<blockquote>\n<p>\u30b3\u30e9\u30e0: Winston \u3068 Bunyan<br \/>\nWinston \u3068 Bunyan \u306e\u9055\u3044\u306f\u4f55\u3067\u3057\u3087\u3046\u304b\uff1f<br \/>\n\u6bd4\u8f03\u8a18\u4e8b\u3068\u3057\u3066\u306f\u304b\u306a\u308a\u53e4\u3044\u306e\u3067\u3059\u304c\u4ee5\u4e0b\u304c\u6709\u540d\u3067\u3059\u3002<br \/>\n<a href=\"https:\/\/strongloop.com\/strongblog\/compare-node-js-logging-winston-bunyan\/\">Comparing Winston and Bunyan Node.js Logging<\/a><br \/>\n\u3053\u3061\u3089\u306e\u8a18\u4e8b\u304b\u3089\u306f\u3001\u30b9\u30c8\u30ec\u30fc\u30b8\u3078\u306e\u30ed\u30b0\u66f8\u304d\u8fbc\u307f\u3092\u4e3b\u773c\u3068\u3057\u3066\u3044\u305f Winston \u306b\u6bd4\u3079\u3066\u3001Bunyan \u306b\u306f\u30b7\u30f3\u30d7\u30eb\u3067\u9b45\u529b\u7684\u306a\u30a2\u30a4\u30c7\u30f3\u30c6\u30a3\u30c6\u30a3\u30fc\u3092\u6301\u3063\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>JSON \u51fa\u529b\u3092\u6a19\u6e96\u3068\u3057\u305f\u4f5c\u308a<\/li>\n<li>\u66f8\u304d\u8fbc\u307f\u5bfe\u8c61\u3068\u3057\u3066 Writable Stream interface \u3092\u610f\u8b58\u3057\u305f\u4f5c\u308a<\/li>\n<\/ul>\n<p>\u3053\u308c\u3089\u306f\u30b3\u30f3\u30c6\u30ca\u6642\u4ee3\u306b\u30de\u30c3\u30c1\u3057\u307e\u3059\u3057\u3001\u51fa\u529b\u5148\u304c\u3069\u3053\u3067\u3042\u308c\u30b9\u30c8\u30ea\u30fc\u30e0\u3068\u3057\u3066\u6271\u3046\u3068\u3044\u3046\u306e\u306f\u3001\u3088\u308a\u30af\u30ea\u30fc\u30f3\u306a\u8a2d\u8a08\u601d\u60f3\u306b\u898b\u3048\u307e\u3059\u3002<br \/>\n\u4e0a\u8a18\u8a18\u4e8b\u306f\u57f7\u7b46\u3055\u308c\u305f\u6642\u304b\u3089\u9577\u3044\u6642\u9593\u304c\u7d4c\u904e\u3057\u3001\u3064\u3044\u5148\u65e5(2018.06)\u306b\u306f Winston 3.0 \u304c\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u307e\u3057\u305f\u3002\u5f37\u529b\u306a Transport \u306f Winston \u306e\u5927\u304d\u306a\u7279\u5fb4\u3067\u3057\u305f\u304c\u3001<a href=\"https:\/\/github.com\/winstonjs\/winston-transport\">winston-transport<\/a> \u3068\u3044\u3046<\/p>\n<blockquote>\n<p>Stream implementation &amp; legacy Transport wrapper.<\/p>\n<\/blockquote>\n<p>\u304c\u5916\u90e8\u30e2\u30b8\u30e5\u30fc\u30eb\u3068\u3057\u3066\u4f5c\u6210\u3055\u308c\u3001\u5f93\u6765\u306e Transports \u30a8\u30b3\u30b7\u30b9\u30c6\u30e0\u3092\u305d\u306e\u307e\u307e\u5229\u7528\u53ef\u80fd\u306a\u30b9\u30c8\u30ea\u30fc\u30e0\u5b9f\u88c5\u3001\u3068\u3044\u3046\u5f62\u5f0f\u306b\u30b3\u30a2\u90e8\u5206\u304c\u66f8\u304d\u76f4\u3055\u308c\u305f\u3088\u3046\u3067\u3059\u3002\u601d\u60f3\u7684\u306b\u306f Bunyan \u306b\u5bc4\u3063\u305f\u5f62\u306b\u306a\u3063\u305f\u3068\u898b\u3066\u3044\u3044\u3067\u3057\u3087\u3046\u3002\u305f\u3060\u3057\u3001\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u3066\u307e\u3060\u9593\u3082\u306a\u3044\u305f\u3081\u3001\u4fe1\u983c\u6027\u3068\u3044\u3046\u610f\u5473\u3067\u306f v3 \u7cfb\u306e\u63a1\u7528\u306f\u3082\u3046\u5c11\u3057\u6642\u9593\u3092\u304a\u3044\u305f\u65b9\u304c\u3044\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n<\/blockquote>\n<h1>\u6e96\u5099 \u2015 \u4f9d\u5b58\u95a2\u4fc2\u6574\u5099<\/h1>\n<p>\u3067\u306f\u3053\u3053\u304b\u3089\u306f\u5b9f\u969b\u306e\u30b3\u30fc\u30c9\u306e\u7d39\u4ecb\u3067\u3059\u3002<br \/>\n\u307e\u305a\u306f <code>package.json<\/code> \u304b\u3089\u3002\u30b7\u30ca\u30ea\u30aaA\uff5eC\u307e\u3067\u5168\u3066\u3067\u5fc5\u8981\u306b\u306a\u308b\u3082\u306e\u3092\u5168\u3066\u6319\u3052\u307e\u3059\u3002<\/p>\n<pre><code>\"dependencies\": {\n    \"browser-bunyan\": \"^1.3.0\",\n    \"bunyan\": \"^1.8.12\",\n    \"bunyan-format\": \"^0.2.1\",\n    \"express-bunyan-logger\": \"^1.3.3\",\n    \"minimatch\": \"^3.0.4\",\n    \"module-alias\": \"^2.0.6\",\n    \"next-bunyan\": \"^0.0.1\",\n},\n\"_moduleAliases\": {\n    \"@services\/logger\": \"lib\/service\/logger\"\n},<\/code><\/pre>\n<p>\u300c&quot;_moduleAliases&quot; \u3063\u3066\u306a\u3093\u3060\u3088\uff1f\uff1f\u300d\u3068\u601d\u308f\u308c\u308b\u65b9\u3082\u3044\u3089\u3063\u3057\u3083\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u3072\u3068\u307e\u305a\u304a\u307e\u3058\u306a\u3044\u7684\u306b\u66f8\u3044\u3066\u304a\u3044\u3066\u304f\u3060\u3055\u3044\u3002\u4fbf\u5229\u306a\u4f7f\u3044\u65b9\u3092\u5f8c\u8ff0\u3057\u307e\u3059\u3002<\/p>\n<h1>Let's Try\uff01 \u2015 \u30b7\u30ca\u30ea\u30aaA<\/h1>\n<p>\u30b7\u30ca\u30ea\u30aaA\u306f\u3001node.js (Express) \u74b0\u5883\u5411\u3051\u306e\u30ed\u30ac\u30fc\u8a2d\u5b9a\u3067\u3059\u3002<\/p>\n<h2>\u8a2d\u5b9a\u7528\u30d5\u30a1\u30a4\u30eb<\/h2>\n<p>\u5229\u7528\u6642\u306e\u30a4\u30e1\u30fc\u30b8\u3092\u63b4\u307f\u3084\u3059\u3044\u3088\u3046\u3001\u30b3\u30f3\u30d5\u30a3\u30b0\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u4f5c\u3063\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<p><strong>config\/logger\/config.dev.js<\/strong><\/p>\n<pre><code>module.exports = {\n  default: 'info',\n\n  \/\/\/\/ configure level for name\n  \/\/ 'myapp:*': 'debug',\n  'myapp:utils:third-party': 'error',\n};<\/code><\/pre>\n<p><strong>config\/logger\/config.prod.js<\/strong><\/p>\n<pre><code>module.exports = {\n  default: 'info',\n};<\/code><\/pre>\n<p>\u4e0a\u8a182\u30d5\u30a1\u30a4\u30eb\u306f\u3001\u305d\u308c\u305e\u308c\u958b\u767a\u6642\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3001\u672c\u756a\u74b0\u5883\u7528\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3067\u3059\u3002<br \/>\n<code>&#039;${\u30ed\u30b0\u30cd\u30fc\u30e0\u30b9\u30da\u30fc\u30b9}&#039;: &#039;${\u30ed\u30b0\u30ec\u30d9\u30eb}&#039;<\/code> \u3068\u3044\u3046\u66f8\u5f0f\u306e\u8a18\u8ff0\u3092\u30ab\u30f3\u30de\u533a\u5207\u308a\u3067\u5217\u6319\u3067\u304d\u308b\u3088\u3046\u306a\u5f62\u5f0f\u3067\u3059\u3002\u30ed\u30b0\u30cd\u30fc\u30e0\u30b9\u30da\u30fc\u30b9\u306f\u3053\u3053\u3067\u306f\u30b3\u30ed\u30f3\u533a\u5207\u308a\u306e blob \u3068\u306a\u3063\u3066\u3044\u307e\u3059\u304c\u3001\u5b9f\u969b\u306b\u306f\u3069\u3093\u306a\u6587\u5b57\u5217\u3067\u3082\u69cb\u3044\u307e\u305b\u3093\u3002<\/p>\n<p>\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30ed\u30b0\u30ec\u30d9\u30eb\u306f <code>default<\/code> \u3068\u3044\u3046\u30ad\u30fc\u3067\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u305d\u3057\u3066\u4ee5\u4e0b\u306f\u3001\u4eca\u3057\u65b9\u4f5c\u6210\u3057\u305f\u8a2d\u5b9a\u3092 <code>NODE_ENV<\/code> \u6bce\u306b\u8aad\u307f\u308f\u3051\u308b\u305f\u3081\u306e\u30d5\u30a1\u30a4\u30eb\u3067\u3059\u3002<\/p>\n<p><strong>config\/index.js<\/strong><\/p>\n<pre><code>function envShortName() {\n  switch (process.env.NODE_ENV) {\n    case 'production':\n      return 'prod';\n    default:\n      return 'dev';\n  }\n}\n\nmodule.exports = {\n  logger: require(<code>.\/logger\/config.${envShortName()}<\/code>),\n};<\/code><\/pre>\n<h2>\u30b5\u30fc\u30d3\u30b9\u30e2\u30b8\u30e5\u30fc\u30eb<\/h2>\n<p>\u6b21\u306b\u3001\u30ed\u30ac\u30fc\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f5c\u6210\u3059\u308b\u3088\u3046\u306a\u30b5\u30fc\u30d3\u30b9\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002\u307e\u305a\u306f\u4e0a\u3067\u5b9a\u7fa9\u3057\u305f\u3088\u3046\u306a\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3080\u6a5f\u80fd\u306f\u8003\u616e\u3057\u306a\u3044\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n<p><strong>services\/logger\/index.js--(WIP)<\/strong><\/p>\n<pre><code>const bunyan = require('bunyan');   \/\/ will be replaced to browser-bunyan on browser by next-bunyan\n\nconst isBrowser = typeof window !== 'undefined';\nconst isProd = process.env.NODE_ENV === 'production';\nconst isTest = process.env.NODE_ENV === 'test';\n\nlet stream = isTest\n  ? require('.\/stream.test')\n  : isProd\n    ? require('.\/stream.prod')\n    : require('.\/stream.dev');\n\n\/\/ logger store\nlet loggers = {};\n\n\/**\n * determine logger level\n * @param {string} name Logger name\n *\/\nfunction determineLoggerLevel(name) {\n  if (isBrowser && isProd) {\n    'error';\n  }\n\n  return 'info';\n}\n\nmodule.exports = (name) => {\n  \/\/ create logger instance if absent\n  if (loggers[name] == null) {\n    loggers[name] = bunyan.createLogger({\n      name,\n      stream,\n      level: determineLoggerLevel(name),\n    });\n  }\n\n  return loggers[name];\n};<\/code><\/pre>\n<p>\u307e\u3060\u3053\u306e\u30d5\u30a1\u30a4\u30eb\u3060\u3051\u3067\u306f\u52d5\u4f5c\u3055\u305b\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u3053\u306e\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u53c2\u7167\u3059\u308b\u30b9\u30c8\u30ea\u30fc\u30e0\u8a2d\u5b9a\u7528\u306e\u30d5\u30a1\u30a4\u30eb\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<h3>\u30b9\u30c8\u30ea\u30fc\u30e0\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb<\/h3>\n<p>\u307e\u305a\u306f\u958b\u767a\u74b0\u5883\u7528\u306e\u30d5\u30a1\u30a4\u30eb\u3002<\/p>\n<p><strong>services\/logger\/stream.dev.js<\/strong><\/p>\n<pre><code>const isBrowser = typeof window !== 'undefined';\n\nlet stream = undefined;\n\n\/\/ browser settings\nif (isBrowser) {\n  const ConsoleFormattedStream = require('@browser-bunyan\/console-formatted-stream').ConsoleFormattedStream;\n  stream = new ConsoleFormattedStream();\n}\n\/\/ node settings\nelse {\n  const bunyanFormat = require('bunyan-format');\n  stream = bunyanFormat({ outputMode: 'short' });\n}\n\nmodule.exports = stream;<\/code><\/pre>\n<p>\u958b\u767a\u74b0\u5883\u3067\u306f\u3001\u30d6\u30e9\u30a6\u30b6\u4e0a\u3067\u306f\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u6e08\u307f\u6587\u5b57\u5217\u3092\u30d6\u30e9\u30a6\u30b6\u30b3\u30f3\u30bd\u30fc\u30eb\u306b\u3001node.js \u4e0a\u3067\u306f\u540c\u3058\u304f\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3055\u308c\u305f\u6587\u5b57\u5217\u3092\u5b9f\u884c\u4e2d\u306e\u30b3\u30f3\u30bd\u30fc\u30eb\u306b\u51fa\u529b\u3057\u307e\u3059\u3002<\/p>\n<p>\u6b21\u306b\u672c\u756a\u74b0\u5883\u7528\u3002<\/p>\n<p><strong>services\/logger\/stream.prod.js<\/strong><\/p>\n<pre><code>const isBrowser = typeof window !== 'undefined';\n\nlet stream = undefined;\n\n\/\/ browser settings\nif (isBrowser) {\n  const ConsoleFormattedStream = require('@browser-bunyan\/console-formatted-stream').ConsoleFormattedStream;\n  stream = new ConsoleFormattedStream();\n}\n\/\/ node settings\nelse {\n  \/\/ do nothing\n  \/\/ output JSON to stdout\n}\n\nmodule.exports = stream;<\/code><\/pre>\n<p>\u3053\u3061\u3089\u306f\u30d6\u30e9\u30a6\u30b6\u4e0a\u306e\u8a2d\u5b9a\u306f\u958b\u767a\u74b0\u5883\u7528\u3068\u540c\u3058\u3067\u3059\u304c\u3001node.js \u4e0a\u306f <code>stream<\/code> \u5909\u6570\u3092 <code>undefined<\/code> \u306e\u307e\u307e\u306b\u3057\u3066\u3044\u307e\u3059\u3002Bunyan \u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u6319\u52d5\u3068\u306a\u308a\u3001stdout \u306b JSON \u5f62\u5f0f\u3067\u51fa\u529b\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u6700\u5f8c\u306b\u30c6\u30b9\u30c8\u7528\u3067\u3059\u3002<\/p>\n<p><strong>services\/logger\/stream.test.js<\/strong><\/p>\n<pre><code>const bunyanFormat = require('bunyan-format');\nconst stream = bunyanFormat({ outputMode: 'short' });\n\nmodule.exports = stream;<\/code><\/pre>\n<p>\u3053\u3053\u307e\u3067\u3067\u3001<code>require(&#039;services\/logger&#039;)(&#039;myapp:mymodule&#039;)<\/code> \u306e\u3088\u3046\u306b\u547c\u3073\u51fa\u3059\u3053\u3068\u3067\u3001<code>myapp:mymodule<\/code> \u30cd\u30fc\u30e0\u30b9\u30da\u30fc\u30b9\u7528\u306e\u30ed\u30ac\u30fc\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u751f\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u307e\u307e\u3067\u306f\u6700\u521d\u306b\u4f5c\u3063\u305f\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u7fa4\u304c\u6d3b\u304d\u306a\u3044\u306e\u3067\u3001<code>services\/logger\/index.js<\/code> \u306b\u624b\u3092\u52a0\u3048\u307e\u3059\u3002<\/p>\n<p><strong>services\/logger\/index.js<\/strong><\/p>\n<pre><code>const bunyan = require('bunyan');   \/\/ will be replaced to browser-bunyan on browser by next-bunyan\nconst minimatch = require('minimatch');\n\nconst isBrowser = typeof window !== 'undefined';\nconst isProd = process.env.NODE_ENV === 'production';\nconst isTest = process.env.NODE_ENV === 'test';\n\nlet config = require('..\/..\/config').logger;\n\nlet stream = isTest\n  ? require('.\/stream.test')\n  : isProd\n    ? require('.\/stream.prod')\n    : require('.\/stream.dev');\n\n\/\/ logger store\nlet loggers = {};\n\n\/\/ merge configuration from environment variables\nconst envLevelMap = {\n  INFO:   'info',\n  DEBUG:  'debug',\n  WARN:   'warn',\n  TRACE:  'trace',\n  ERROR:  'error',\n};\nObject.keys(envLevelMap).forEach(envName => {   \/\/ ['INFO', 'DEBUG', ...].forEach\n  const envVars = process.env[envName];         \/\/ process.env.DEBUG should have a value like 'growi:routes:page,growi:models.page,...'\n  if (envVars != null) {\n    const level = envLevelMap[envName];\n    envVars.split(',').forEach(ns => {          \/\/ ['growi:routes:page', 'growi:models.page', ...].forEach\n      config[ns.trim()] = level;\n    });\n  }\n});\n\n\/**\n * determine logger level\n * @param {string} name Logger name\n *\/\nfunction determineLoggerLevel(name) {\n  if (isBrowser && isProd) {\n    'error';\n  }\n\n  let level = config.default;\n\n  \/\/ retrieve configured level\n  Object.keys(config).some(key => { \/\/ breakable forEach\n    \/\/ test whether 'name' matches to 'key'(blob)\n    if (minimatch(name, key)) {\n      level = config[key];\n      return;                       \/\/ break if match\n    }\n  });\n\n  return level;\n}\n\nmodule.exports = (name) => {\n  \/\/ create logger instance if absent\n  if (loggers[name] == null) {\n    loggers[name] = bunyan.createLogger({\n      name,\n      stream,\n      level: determineLoggerLevel(name),\n    });\n  }\n\n  return loggers[name];\n};<\/code><\/pre>\n<p>\u304b\u306a\u308a\u3054\u3061\u3083\u3063\u3068\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u3084\u3063\u3066\u3044\u308b\u3053\u3068\u306f\u74b0\u5883\u5909\u6570\u3084\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306e map \u3067\u5b9a\u7fa9\u3057\u3066\u3044\u308b\u30cd\u30fc\u30e0\u30b9\u30da\u30fc\u30b9\u3054\u3068\u306b\u30ed\u30b0\u30ec\u30d9\u30eb\u3092\u5909\u66f4\u3057\u3066\u3044\u308b\u3060\u3051\u3067\u3059\u3002<\/p>\n<h2>\u4f7f\u3063\u3066\u307f\u3088\u3046\uff01<\/h2>\n<p>\u3053\u3053\u307e\u3067\u306e\u30b3\u30fc\u30c9\u3067\u3001<\/p>\n<ul>\n<li>\n<p>\u30b7\u30ca\u30ea\u30aaA<\/p>\n<ul>\n<li>node.js (Express)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u74b0\u5883\u306f\u30ab\u30d0\u30fc\u3067\u304d\u305f\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u305d\u308c\u3067\u306f\u4f7f\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5b9a\u7fa9\u3001\u5229\u7528\u3057\u307e\u3059\u3002<\/p>\n<p><strong>app.js<\/strong><\/p>\n<pre><code>const logger = require('services\/logger')('myapp:app');\n\n(..snip..)\n\n\/\/ listen\nexpressApp.listen(process.env.PORT, err => {\n  if (err) {\n    throw err;\n  }\n  logger.info('> Ready on http:\/\/localhost:' + process.env.PORT + ' [' + process.env.NODE_ENV + ']');\n});<\/code><\/pre>\n<p>\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b7\u30e7\u30fc\u30c8\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3055\u308c\u305f\u30ed\u30b0\u304c\u51fa\u529b\u3055\u308c\u308b\u306f\u305a\u3067\u3059\u3002<\/p>\n<pre><code>10:00:00.000Z  INFO myapp:app: > Ready on http:\/\/localhost:3000 [development]<\/code><\/pre>\n<h3>\u300c<code>require(&#039;..\/..\/..\/..\/services\/logger&#039;)<\/code> \u2026\u3042\u308c\u3001\u307e\u3060\u8db3\u308a\u306a\u3044\uff1f\u300d<\/h3>\n<p>Java \u3068\u9055\u3063\u3066\u30d1\u30c3\u30b1\u30fc\u30b8\u306e\u6982\u5ff5\u304c\u306a\u3044 JavaScript \u3067\u306f\u3001require \u3084 import \u6642\u306e\u968e\u5c64\u306e\u89e3\u6c7a\u306f\u982d\u306e\u75db\u3044\u554f\u984c\u3067\u3059\u3002<\/p>\n<p>\u305d\u3053\u3067\u3001<code>packages.json<\/code> \u306b\u8a18\u8ff0\u3057\u305f <code>_moduleAliases<\/code> \u306e\u51fa\u756a\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u3063\u3066\u3069\u306e\u968e\u5c64\u306b\u3042\u308b\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u3067\u3082 <code>@services\/logger<\/code> \u3067\u5148\u307b\u3069\u4f5c\u6210\u3057\u305f\u30ed\u30ac\u30fc\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u53c2\u7167\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u5229\u7528\u5074\u306e\u30b3\u30fc\u30c9\u3068\u3057\u3066\u306f\u3001\u3069\u306e\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u3067\u3082<\/p>\n<pre><code>const logger = require('@services\/logger')('myapp:...');<\/code><\/pre>\n<p>\u3068\u3044\u3046\u66f8\u304d\u65b9\u3067\u53c2\u7167\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3>\u74b0\u5883\u5909\u6570\u3067\u8a2d\u5b9a\u3092\u4e0a\u66f8\u304d\u3059\u308b<\/h3>\n<p>\u672c\u756a\u30c7\u30a3\u30d7\u30ed\u30a4\u5f8c\u306b\u601d\u308f\u306c\u30c8\u30e9\u30d6\u30eb\u306b\u898b\u821e\u308f\u308c\u3001\u7279\u5b9a\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u30ed\u30b0\u3092\u5410\u304d\u51fa\u3057\u305f\u3044\u3001\u3068\u3044\u3046\u8981\u6c42\u3082\u3042\u308b\u3053\u3068\u3067\u3057\u3087\u3046\u3002\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u74b0\u5883\u5909\u6570\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u4e00\u6642\u7684\u306b\u30ed\u30b0\u30ec\u30d9\u30eb\u3092\u5909\u66f4\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<ul>\n<li><code>DEBUG=myapp:app,myapp:routes:*<\/code><\/li>\n<li><code>TRACE=myapp:services:passport<\/code><\/li>\n<\/ul>\n<p>\u30ad\u30fc\u304c\u30ed\u30b0\u30ec\u30d9\u30eb\u306e\u5927\u6587\u5b57\u8868\u73fe\u3001\u5024\u304c\u30ed\u30b0\u30cd\u30fc\u30e0\u30b9\u30da\u30fc\u30b9\u306e\u30ab\u30f3\u30de\u533a\u5207\u308a\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3><a href=\"https:\/\/www.npmjs.com\/package\/debug\">debug<\/a> \u30e9\u30a4\u30d6\u30e9\u30ea\u4ee3\u66ff<\/h3>\n<p>\u65e2\u5b58\u306e <a href=\"https:\/\/www.npmjs.com\/package\/debug\">debug<\/a> \u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u3088\u308b\u30ed\u30b0\u51fa\u529b\u884c\u304c\u5c71\u306e\u3088\u3046\u306b\u3042\u308b\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u5bfe\u3057\u3066\u3001\u4e00\u3064\u4e00\u3064\u3092\u65b0\u3057\u3044\u30ed\u30ac\u30fc\u306e\u8a18\u8ff0\u306b\u66f8\u304d\u63db\u3048\u3066\u3044\u304f\u306e\u306f\u5927\u5909\u3067\u3059\u3002<\/p>\n<p>\u3053\u3053\u3067\u307e\u305f<code>packages.json<\/code> \u306b\u8a18\u8ff0\u3057\u305f <code>_moduleAliases<\/code> \u304c\u6d3b\u8e8d\u3057\u307e\u3059\u3002<br \/>\n\u307e\u305a\u306f <code>package.json<\/code> \u306e <code>_moduleAliases<\/code> \u306b\u4ee5\u4e0b\u3092\u8ffd\u52a0\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p><strong>package.json<\/strong><\/p>\n<pre><code>\"_moduleAliases\": {\n    \"debug\": \"lib\/services\/logger\/alias-for-debug\"\n},<\/code><\/pre>\n<p>\u305d\u3057\u3066 <code>alias-for-debug.js<\/code> \u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n<p><strong>services\/logger.alias-for-debug.js<\/strong><\/p>\n<pre><code>\/**\n * return 'debug' method of bunyan logger\n *\n * This is supposed to be used as an replacement of \"require('debug')\"\n *\n * @param {string} name\n *\/\nmodule.exports = (name) => {\n  const bunyanLogger = require('.\/index')(name);\n  return bunyanLogger.debug.bind(bunyanLogger);\n};<\/code><\/pre>\n<p>\u3053\u308c\u3067\u3001debug \u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u5229\u7528\u3057\u3066\u51fa\u529b\u3055\u308c\u305f\u30ed\u30b0\u306f\u3001Bunyan \u5185\u3067\u30ed\u30b0\u30ec\u30d9\u30eb debug \u3068\u3057\u3066\u53d6\u308a\u6271\u308f\u308c\u307e\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u3001<\/p>\n<pre><code>const debug = require('debug')('myapp:routes:page');\n\ndebug('Debug message!');<\/code><\/pre>\n<p>\u306e\u3088\u3046\u306b\u5229\u7528\u3057\u3066\u3044\u305f\u90e8\u5206\u306f\u305d\u306e\u307e\u307e Bunyan \u3067\u51e6\u7406\u3055\u308c\u308b\u306e\u3067\u3001<code>myapp:routes:page<\/code> \u30ed\u30b0\u30cd\u30fc\u30e0\u30b9\u30da\u30fc\u30b9\u306e\u51fa\u529b\u30ec\u30d9\u30eb\u3092 debug \u4ee5\u4e0a\u306b\u3059\u308b\u3053\u3068\u3067\u30ed\u30b0\u304c\u51fa\u529b\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u6a5f\u80fd\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u3001debug \u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u5229\u7528\u3057\u3066\u30ed\u30b0\u51fa\u529b\u3057\u3066\u3044\u308b\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u30fc\u88fd\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u30ed\u30b0\u3082\u3001\u540c\u3058\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb(\u74b0\u5883\u5909\u6570)\u3067\u30ed\u30b0\u306e\u51fa\u3057\u5206\u3051\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>(\u304a\u307e\u3051) \u958b\u767a\u6642\u306e Express \u30ed\u30b0\u5411\u3051\u8a2d\u5b9a<\/h2>\n<p>Express \u306e\u30ed\u30b0\u3092\u3069\u3046\u51fa\u3057\u305f\u3044\u304b\u306f\u597d\u307f\u306b\u306a\u308a\u307e\u3059\u304c\u3001\u300c\u30d2\u30e5\u30fc\u30de\u30f3\u30ea\u30fc\u30c0\u30d6\u30eb\u304b\u3069\u3046\u304b\u300d\u3092\u91cd\u8996\u3059\u308b\u3068\u3001<a href=\"https:\/\/github.com\/expressjs\/morgan\">morgan<\/a> \u306e\u51fa\u529b\u307b\u3069\u898b\u3084\u3059\u3044\u3082\u306e\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3057\u304b\u3082\u307b\u307c\u30b3\u30f3\u30d5\u30a3\u30b0\u30ec\u30b9\u3067\u3059\u3002\u4e00\u65b9Bunyan \u3092\u4f7f\u3063\u3066\u540c\u7b49\u306e\u60c5\u5831\u91cf\u306b\u3057\u3088\u3046\u3068\u3059\u308b\u3068\u3001\u8a2d\u5b9a\u304c\u7169\u96d1\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u4ee5\u4e0b\u306f\u3001\u4f4e\u901f\u304b\u3064 JSON \u51fa\u529b\u3067\u304d\u306a\u3044 morgan \u306f\u958b\u767a\u74b0\u5883\u306e\u307f\u3067\u5229\u7528\u3057\u3001\u4e00\u65b9\u3067\u672c\u756a\u74b0\u5883\u3067\u306f <a href=\"https:\/\/github.com\/villadora\/express-bunyan-logger\">express-bunyan-logger<\/a> \u3092\u5229\u7528\u3057\u3066\u9ad8\u901f\u306b JSON \u51fa\u529b\u3059\u308b\u3088\u3046\u306a\u8a2d\u5b9a\u3092\u884c\u3046\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n<pre><code>\/**\n * initialize logger for Express\n * @param {object} expressApp\n *\/\ninitExpressLogger(expressApp) {\n  const isProd = process.env.NODE_ENV === 'production';\n\n  \/\/ use bunyan\n  if (isProd) {\n    const expressBunyanLogger = require('express-bunyan-logger');\n    const logger = require('@services\/logger')('express');\n    expressApp.use(expressBunyanLogger({ logger }));\n  }\n  \/\/ use morgan\n  else {\n    const morgan = require('morgan');\n    expressApp.use(morgan('dev'));\n  }\n}<\/code><\/pre>\n<h1>Let's Try\uff01 \u2015 \u30b7\u30ca\u30ea\u30aaB<\/h1>\n<p>\u30b7\u30ca\u30ea\u30aaB\u306f\u3001node.js (Express) + webpack\/babel \u306b\u3088\u308b\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30d3\u30eb\u30c9\u4e21\u65b9\u3067\u5229\u7528\u3067\u304d\u308b\u8a2d\u5b9a\u3067\u3059\u3002<\/p>\n<p>\u3068\u3044\u3063\u3066\u3082\u3001\u3053\u3053\u307e\u3067\u306b\u4f5c\u3063\u305f\u30d5\u30a1\u30a4\u30eb\u306f\u5b8c\u5168\u306b\u6d41\u7528\u3067\u304d\u307e\u3059\u306e\u3067\u3001\u5fc5\u8981\u306a\u306e\u306f webpack \u306e\u8a2d\u5b9a\u306e\u307f\u3067\u3059\u3002<\/p>\n<p><strong>webpack.js<\/strong><\/p>\n<pre><code>(..snip..)\n\nresolve: {\n  alias: {\n    '@services\/logger': 'services\/logger',\n    \/\/ replace bunyan\n    'bunyan': 'browser-bunyan',\n  }\n},\n\n(..snip..)<\/code><\/pre>\n<p>node.js \u5411\u3051\u306b\u306f <code>package.json<\/code> \u306e <code>_moduleAliases<\/code> \u3067\u884c\u3063\u3066\u3044\u305f\u3053\u3068\u3092\u3001webpack \u3067\u3082\u8a2d\u5b9a\u3059\u308b\u3068\u3044\u3046\u3060\u3051\u3067\u3059\u3002\u305f\u3060\u3057\u3001<code>require(&#039;bunyan&#039;)<\/code> \u306f <code>require(&#039;browser-bunyan&#039;)<\/code> \u306b\u7f6e\u304d\u63db\u308f\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2>\u4f7f\u3063\u3066\u307f\u3088\u3046\uff01<\/h2>\n<p>\u4f7f\u3044\u65b9\u306f\u5168\u304f\u540c\u3058\u3067\u3059\u3002\u3042\u3048\u3066 ES Module \u3067\u306e import \u98a8\u306b\u66f8\u304f\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><strong>components\/Component1.mjs<\/strong><\/p>\n<pre><code>import loggerFactory from '@services\/logger';\nconst logger = loggerFactory('myapp:components:comp1');\n\nexport default class extends React.Component {\n\n  render() {\n    logger.debug('test: debug: render() about');\n    logger.info('test: info: render() about');\n\n(..snip..)<\/code><\/pre>\n<h1>Let's Try\uff01 \u2015 \u30b7\u30ca\u30ea\u30aaC<\/h1>\n<p>\u30b7\u30ca\u30ea\u30aaC\u306f\u3001<a href=\"https:\/\/github.com\/zeit\/next.js\/\">next.js<\/a> \u5411\u3051\u306e\u8a2d\u5b9a\u3067\u3059\u3002<\/p>\n<p>\u3053\u3053\u3067\u3082\u30b7\u30ca\u30ea\u30aaA\u3067\u4f5c\u3063\u305f\u30d5\u30a1\u30a4\u30eb\u306f\u305d\u306e\u307e\u307e\u6d41\u7528\u3067\u304d\u307e\u3059\u3002\u30b7\u30ca\u30ea\u30aaB\u3067\u884c\u3063\u305f webpack \u7528\u306e\u8a2d\u5b9a\u3092\u3001next.js \u5c02\u7528\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306e\u66f8\u5f0f\u3067\u66f8\u304d\u76f4\u3059\u3060\u3051\u3067\u3059\u3002<\/p>\n<p><strong>next.config.js<\/strong><\/p>\n<pre><code>const path = require('path');\nconst withBunyan = require('next-bunyan');\n\nmodule.exports = withBunyan({\n  webpack: (config, { dev }) => {\n\n    (..snip..)\n\n    \/\/ resolve\n    config.resolve.alias = Object.assign({\n      '@services\/logger': path.resolve(__dirname, '.\/services\/logger'),\n    }, config.resolve.alias || {});\n\n    \/\/ Important: return the modified config\n    return config;\n  },\n\n(..snip..)<\/code><\/pre>\n<p><code>require(&#039;bunyan&#039;)<\/code> =&gt; <code>require(&#039;browser-bunyan&#039;)<\/code>  \u3078\u306e\u7f6e\u304d\u63db\u3048\u306f\u3001next-bunyan \u304c\u3084\u3063\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n<h2>\u4f7f\u3063\u3066\u307f\u3088\u3046\uff01<\/h2>\n<p>\u30b7\u30ca\u30ea\u30aaB\u3068\u5168\u304f\u540c\u3058\u3067\u3059\u306e\u3067\u5272\u611b\u3057\u307e\u3059\u3002<\/p>\n<h1>\u307e\u3068\u3081<\/h1>\n<p>\u4e2d\u7de8\u3067\u306f\u30ed\u30ae\u30f3\u30b0\u306b\u95a2\u3057\u3066\u5b9f\u969b\u306e\u30b3\u30fc\u30c9\u3092\u7d39\u4ecb\u3057\u3001node.js, webpack\/babel, \u305d\u3057\u3066 next.js \u3068\u3044\u30463\u3064\u306e\u30b7\u30ca\u30ea\u30aa\u30013\u3064\u306e\u74b0\u5883\u3067\u7406\u60f3\u7684\u306a\u30ed\u30ae\u30f3\u30b0\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u67d4\u8edf\u306a\u30ed\u30b0\u30cd\u30fc\u30e0\u30b9\u30da\u30fc\u30b9\u3001\u30ed\u30b0\u30ec\u30d9\u30eb\u306e\u8a2d\u5b9a\u3084\u904b\u7528\u6642\u306e\u4e00\u6642\u7684\u306a\u5909\u66f4\u3060\u3051\u3067\u306a\u304f\u3001\u3053\u308c\u307e\u3067 debug \u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u3063\u3066\u3044\u305f\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u306b\u5bfe\u3057\u3066\u3082\u4e8c\u91cd\u7ba1\u7406\u3059\u308b\u3053\u3068\u306a\u304f\u7f8e\u3057\u3044\u30ed\u30b0\u51fa\u529b\u304c\u3067\u304d\u308b\u30b7\u30b9\u30c6\u30e0\u3092\u5b9f\u73fe\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<p>\u624b\u524d\u5473\u564c\u3067\u3059\u304c\u3053\u308c\u3089\u306e\u30b3\u30fc\u30c9\u306f\u79fb\u690d\u6027\u3082\u9ad8\u3044\u306e\u3067\u3001\u5168\u3066\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u30d5\u30a1\u30a4\u30eb\u3092\u30b3\u30d4\u30fc\u3057\u3066\u6301\u3063\u3066\u3044\u304f\u3060\u3051\u3067\u540c\u3058\u52b9\u80fd\u3092\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30c1\u30fc\u30e0\u5185\u306e\u30ed\u30ae\u30f3\u30b0\u306b\u95a2\u3059\u308b\u5b66\u7fd2\u30b3\u30b9\u30c8\u7bc0\u7d04\u306b\u3082\u306a\u308b\u306e\u3067\u306f\u306a\u3044\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<p>\u6b21\u56de\u3001\u5f8c\u7de8\u3067\u306f\u3001\u30c7\u30d0\u30c3\u30ac\u5229\u7528\u306e\u300c\u7406\u60f3\u306e\u4e16\u754c\u300d\u3092\u5b9f\u73fe\u3059\u308b\u5177\u4f53\u7684\u306a\u30b3\u30fc\u30c9\u3092\u7d39\u4ecb\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<h1>\u95a2\u9023\u8a18\u4e8b<\/h1>\n<p><a href=\"https:\/\/weseek.co.jp\/tech\/296\/\">\u30a4\u30de\u30c9\u30ad\u306e JavaScript \u958b\u767a\u3067\u4f7f\u3048\u308b\u3001\u30ea\u30e2\u30fc\u30c8\u30c7\u30d0\u30c3\u30b0\u3068\u30ed\u30ac\u30fc\u306e Tips (\u524d\u7de8)<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>SEROKU \u306e\u958b\u767a\u3092\u4f8b\u306b\u3001\u5f0a\u793e\u3067\u4f7f\u3063\u3066\u3044\u308b\u30ea\u30e2\u30fc\u30c8\u30c7\u30d0\u30c3\u30b0\u3068\u30ed\u30ac\u30fc\u306e Tips \u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002 \u5f53\u8a18\u4e8b\u306f 2018 \u5e74\u3068\u904e\u53bb\u306e\u8a18\u4e8b\u3067\u3059\u304c\u3001\u73fe\u5728\u3067\u3082\u5fdc\u7528\u53ef\u80fd\u306a Tips \u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002 \u8a18\u4e8b\u306e\u6700\u5f8c\u306b\u95a2\u9023\u8a18\u4e8b\u3092\u63b2\u8f09\u3057\u3066<\/p>\n","protected":false},"author":3,"featured_media":2141,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[31],"tags":[],"_links":{"self":[{"href":"https:\/\/weseek.co.jp\/tech\/wp-json\/wp\/v2\/posts\/234"}],"collection":[{"href":"https:\/\/weseek.co.jp\/tech\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/weseek.co.jp\/tech\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/weseek.co.jp\/tech\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/weseek.co.jp\/tech\/wp-json\/wp\/v2\/comments?post=234"}],"version-history":[{"count":19,"href":"https:\/\/weseek.co.jp\/tech\/wp-json\/wp\/v2\/posts\/234\/revisions"}],"predecessor-version":[{"id":4073,"href":"https:\/\/weseek.co.jp\/tech\/wp-json\/wp\/v2\/posts\/234\/revisions\/4073"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/weseek.co.jp\/tech\/wp-json\/wp\/v2\/media\/2141"}],"wp:attachment":[{"href":"https:\/\/weseek.co.jp\/tech\/wp-json\/wp\/v2\/media?parent=234"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/weseek.co.jp\/tech\/wp-json\/wp\/v2\/categories?post=234"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/weseek.co.jp\/tech\/wp-json\/wp\/v2\/tags?post=234"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}