express js best practices

app.js

@@ -9,6 +9,8 @@ const session = require('express-session');
 const errorhandler = require('errorhandler');
 const flash = require('express-flash');
 const fileUpload = require('express-fileupload');
+const helmet = require('helmet');
+const compression = require('compression');
 
 const i18n = require('i18n'); // internationalization
 i18n.configure({
@@ -16,7 +18,7 @@ i18n.configure({
   directory: './locales'
 });
 
-var env = process.env.NODE_ENV || 'testing';
+var env = process.env.NODE_ENV || 'development';
 const config = require('./config/config')[env];
 
 var app = express();
@@ -33,6 +35,8 @@ app.use(fileUpload({
   }
 }));
 
+app.use(helmet());
+app.use(compression());
 app.use(morgan('combined'));
 app.use(cookieParser());
 app.use(bodyParser.json());

package-lock.json

@@ -102,9 +102,9 @@
       },
       "dependencies": {
         "lodash": {
-          "version": "4.17.15",
-          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.15.tgz",
-          "integrity": "sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A=="
+          "version": "4.17.19",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.19.tgz",
+          "integrity": "sha512-JNvd8XER9GQX0v2qJgsaN/mzFCNA5BRe/j8JN9d+tWyGLSodKQHKFicdwNYzWwI3wjRnaKPsGj1XkBjx/F96DQ=="
         }
       }
     },
@@ -158,6 +158,11 @@
         "type-is": "~1.6.17"
       }
     },
+    "bowser": {
+      "version": "2.9.0",
+      "resolved": "https://registry.npmjs.org/bowser/-/bowser-2.9.0.tgz",
+      "integrity": "sha512-2ld76tuLBNFekRgmJfT2+3j5MIrP6bFict8WAIT3beq+srz1gcKNAdNKMqHqauQt63NmAa88HfP1/Ypa9Er3HA=="
+    },
     "boxen": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/boxen/-/boxen-1.3.0.tgz",
@@ -214,6 +219,11 @@
       "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-1.2.1.tgz",
       "integrity": "sha1-m7UwTS4LVmmLLHWLCKPqqdqlijk="
     },
+    "camelize": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/camelize/-/camelize-1.0.0.tgz",
+      "integrity": "sha1-FkpUg+Yw+kMh5a8HAg5TGDGyYJs="
+    },
     "capture-stack-trace": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/capture-stack-trace/-/capture-stack-trace-1.0.1.tgz",
@@ -293,6 +303,42 @@
       "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.3.tgz",
       "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU="
     },
+    "compressible": {
+      "version": "2.0.18",
+      "resolved": "https://registry.npmjs.org/compressible/-/compressible-2.0.18.tgz",
+      "integrity": "sha512-AF3r7P5dWxL8MxyITRMlORQNaOA2IkAFaTr4k7BUumjPtRpGDTZpl0Pb1XCO6JeDCBdp126Cgs9sMxqSjgYyRg==",
+      "requires": {
+        "mime-db": ">= 1.43.0 < 2"
+      },
+      "dependencies": {
+        "mime-db": {
+          "version": "1.44.0",
+          "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.44.0.tgz",
+          "integrity": "sha512-/NOTfLrsPBVeH7YtFPgsVWveuL+4SjjYxaQ1xtM1KMFj7HdxlBlxeyNLzhyJVx7r4rZGJAZ/6lkKCitSc/Nmpg=="
+        }
+      }
+    },
+    "compression": {
+      "version": "1.7.4",
+      "resolved": "https://registry.npmjs.org/compression/-/compression-1.7.4.tgz",
+      "integrity": "sha512-jaSIDzP9pZVS4ZfQ+TzvtiWhdpFhE2RDHz8QJkpX9SIpLq88VueF5jJw6t+6CUQcAoA6t+x89MLrWAqpfDE8iQ==",
+      "requires": {
+        "accepts": "~1.3.5",
+        "bytes": "3.0.0",
+        "compressible": "~2.0.16",
+        "debug": "2.6.9",
+        "on-headers": "~1.0.2",
+        "safe-buffer": "5.1.2",
+        "vary": "~1.1.2"
+      },
+      "dependencies": {
+        "bytes": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.0.0.tgz",
+          "integrity": "sha1-0ygVQE1olpn4Wk6k+odV3ROpYEg="
+        }
+      }
+    },
     "concat-map": {
       "version": "0.0.1",
       "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
@@ -335,6 +381,11 @@
         "safe-buffer": "5.1.2"
       }
     },
+    "content-security-policy-builder": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/content-security-policy-builder/-/content-security-policy-builder-2.1.0.tgz",
+      "integrity": "sha512-/MtLWhJVvJNkA9dVLAp6fg9LxD2gfI6R2Fi1hPmfjYXSahJJzcfvoeDOxSyp4NvxMuwWv3WMssE9o31DoULHrQ=="
+    },
     "content-type": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/content-type/-/content-type-1.0.4.tgz",
@@ -397,6 +448,11 @@
       "resolved": "https://registry.npmjs.org/crypto-random-string/-/crypto-random-string-1.0.0.tgz",
       "integrity": "sha1-ojD2T1aDEOFJgAmUB5DsmVRbyn4="
     },
+    "dasherize": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/dasherize/-/dasherize-2.0.0.tgz",
+      "integrity": "sha1-bYCcnNDPe7iVLYD8hPoT1H3bEwg="
+    },
     "debug": {
       "version": "2.6.9",
       "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
@@ -453,6 +509,11 @@
       "resolved": "https://registry.npmjs.org/doctypes/-/doctypes-1.1.0.tgz",
       "integrity": "sha1-6oCxBqh1OHdOijpKWv4pPeSJ4Kk="
     },
+    "dont-sniff-mimetype": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/dont-sniff-mimetype/-/dont-sniff-mimetype-1.1.0.tgz",
+      "integrity": "sha512-ZjI4zqTaxveH2/tTlzS1wFp+7ncxNZaIEWYg3lzZRHkKf5zPT/MnEG6WL0BhHMJUabkh8GeU5NL5j+rEUCb7Ug=="
+    },
     "dot-prop": {
       "version": "4.2.0",
       "resolved": "https://registry.npmjs.org/dot-prop/-/dot-prop-4.2.0.tgz",
@@ -643,6 +704,11 @@
         }
       }
     },
+    "feature-policy": {
+      "version": "0.3.0",
+      "resolved": "https://registry.npmjs.org/feature-policy/-/feature-policy-0.3.0.tgz",
+      "integrity": "sha512-ZtijOTFN7TzCujt1fnNhfWPFPSHeZkesff9AXZj+UEjYBynWNUIYpC87Ve4wHzyexQsImicLu7WsC2LHq7/xrQ=="
+    },
     "fill-range": {
       "version": "7.0.1",
       "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-7.0.1.tgz",
@@ -753,6 +819,72 @@
       "resolved": "https://registry.npmjs.org/has-symbols/-/has-symbols-1.0.1.tgz",
       "integrity": "sha512-PLcsoqu++dmEIZB+6totNFKq/7Do+Z0u4oT0zKOJNl3lYK6vGwwu2hjHs+68OEZbTjiUE9bgOABXbP/GvrS0Kg=="
     },
+    "helmet": {
+      "version": "3.23.3",
+      "resolved": "https://registry.npmjs.org/helmet/-/helmet-3.23.3.tgz",
+      "integrity": "sha512-U3MeYdzPJQhtvqAVBPntVgAvNSOJyagwZwyKsFdyRa8TV3pOKVFljalPOCxbw5Wwf2kncGhmP0qHjyazIdNdSA==",
+      "requires": {
+        "depd": "2.0.0",
+        "dont-sniff-mimetype": "1.1.0",
+        "feature-policy": "0.3.0",
+        "helmet-crossdomain": "0.4.0",
+        "helmet-csp": "2.10.0",
+        "hide-powered-by": "1.1.0",
+        "hpkp": "2.0.0",
+        "hsts": "2.2.0",
+        "nocache": "2.1.0",
+        "referrer-policy": "1.2.0",
+        "x-xss-protection": "1.3.0"
+      },
+      "dependencies": {
+        "depd": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/depd/-/depd-2.0.0.tgz",
+          "integrity": "sha512-g7nH6P6dyDioJogAAGprGpCtVImJhpPk/roCzdb3fIh61/s/nPsfR6onyMwkCAR/OlC3yBC0lESvUoQEAssIrw=="
+        }
+      }
+    },
+    "helmet-crossdomain": {
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/helmet-crossdomain/-/helmet-crossdomain-0.4.0.tgz",
+      "integrity": "sha512-AB4DTykRw3HCOxovD1nPR16hllrVImeFp5VBV9/twj66lJ2nU75DP8FPL0/Jp4jj79JhTfG+pFI2MD02kWJ+fA=="
+    },
+    "helmet-csp": {
+      "version": "2.10.0",
+      "resolved": "https://registry.npmjs.org/helmet-csp/-/helmet-csp-2.10.0.tgz",
+      "integrity": "sha512-Rz953ZNEFk8sT2XvewXkYN0Ho4GEZdjAZy4stjiEQV3eN7GDxg1QKmYggH7otDyIA7uGA6XnUMVSgeJwbR5X+w==",
+      "requires": {
+        "bowser": "2.9.0",
+        "camelize": "1.0.0",
+        "content-security-policy-builder": "2.1.0",
+        "dasherize": "2.0.0"
+      }
+    },
+    "hide-powered-by": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/hide-powered-by/-/hide-powered-by-1.1.0.tgz",
+      "integrity": "sha512-Io1zA2yOA1YJslkr+AJlWSf2yWFkKjvkcL9Ni1XSUqnGLr/qRQe2UI3Cn/J9MsJht7yEVCe0SscY1HgVMujbgg=="
+    },
+    "hpkp": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/hpkp/-/hpkp-2.0.0.tgz",
+      "integrity": "sha1-EOFCJk52IVpdMMROxD3mTe5tFnI="
+    },
+    "hsts": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/hsts/-/hsts-2.2.0.tgz",
+      "integrity": "sha512-ToaTnQ2TbJkochoVcdXYm4HOCliNozlviNsg+X2XQLQvZNI/kCHR9rZxVYpJB3UPcHz80PgxRyWQ7PdU1r+VBQ==",
+      "requires": {
+        "depd": "2.0.0"
+      },
+      "dependencies": {
+        "depd": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/depd/-/depd-2.0.0.tgz",
+          "integrity": "sha512-g7nH6P6dyDioJogAAGprGpCtVImJhpPk/roCzdb3fIh61/s/nPsfR6onyMwkCAR/OlC3yBC0lESvUoQEAssIrw=="
+        }
+      }
+    },
     "http-errors": {
       "version": "1.7.2",
       "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.7.2.tgz",
@@ -988,9 +1120,9 @@
       "integrity": "sha1-odePw6UEdMuAhF07O24dpJpEbo4="
     },
     "lodash": {
-      "version": "4.17.15",
-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.15.tgz",
-      "integrity": "sha1-tEf2ZwoEVbv+7dETku/zMOoJdUg="
+      "version": "4.17.19",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.19.tgz",
+      "integrity": "sha512-JNvd8XER9GQX0v2qJgsaN/mzFCNA5BRe/j8JN9d+tWyGLSodKQHKFicdwNYzWwI3wjRnaKPsGj1XkBjx/F96DQ=="
     },
     "longest": {
       "version": "1.0.1",
@@ -1101,9 +1233,9 @@
       }
     },
     "minimist": {
-      "version": "1.2.0",
-      "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
-      "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ="
+      "version": "1.2.5",
+      "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.5.tgz",
+      "integrity": "sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw=="
     },
     "morgan": {
       "version": "1.9.1",
@@ -1143,6 +1275,11 @@
       "resolved": "https://registry.npmjs.org/negotiator/-/negotiator-0.6.2.tgz",
       "integrity": "sha1-/qz3zPUlp3rpY0Q2pkiD/+yjRvs="
     },
+    "nocache": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/nocache/-/nocache-2.1.0.tgz",
+      "integrity": "sha512-0L9FvHG3nfnnmaEQPjT9xhfN4ISk0A8/2j4M37Np4mcDesJjHgEUfgPhdCyZuFI954tjokaIj/A3NdpFNdEh4Q=="
+    },
     "node-forge": {
       "version": "0.7.6",
       "resolved": "https://registry.npmjs.org/node-forge/-/node-forge-0.7.6.tgz",
@@ -1636,6 +1773,11 @@
         "picomatch": "^2.0.4"
       }
     },
+    "referrer-policy": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/referrer-policy/-/referrer-policy-1.2.0.tgz",
+      "integrity": "sha512-LgQJIuS6nAy1Jd88DCQRemyE3mS+ispwlqMk3b0yjZ257fI1v9c+/p6SD5gP5FGyXUIgrNOAfmyioHwZtYv2VA=="
+    },
     "regenerator-runtime": {
       "version": "0.11.1",
       "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.11.1.tgz",
@@ -2044,6 +2186,11 @@
         "signal-exit": "^3.0.2"
       }
     },
+    "x-xss-protection": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/x-xss-protection/-/x-xss-protection-1.3.0.tgz",
+      "integrity": "sha512-kpyBI9TlVipZO4diReZMAHWtS0MMa/7Kgx8hwG/EuZLiA6sg4Ah/4TRdASHhRRN3boobzcYgFRUFSgHRge6Qhg=="
+    },
     "xdg-basedir": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/xdg-basedir/-/xdg-basedir-3.0.0.tgz",

package.json

@@ -23,6 +23,7 @@
     "async": "^3.1.0",
     "bcryptjs": "^2.4.3",
     "body-parser": "^1.19.0",
+    "compression": "^1.7.4",
     "cookie-parser": "1.4.3",
     "crypto": "^1.0.1",
     "errorhandler": "1.4.3",
@@ -31,6 +32,7 @@
     "express-flash": "0.0.2",
     "express-session": "^1.17.0",
     "fs": "0.0.1-security",
+    "helmet": "^3.23.3",
     "i18n": "^0.8.5",
     "morgan": "^1.9.1",
     "mysql": "^2.17.1",