diff --git a/.phpcs.xml b/.phpcs.xml
index 4719bb82..a74d7b3f 100644
--- a/.phpcs.xml
+++ b/.phpcs.xml
@@ -7,7 +7,7 @@
 		<exclude name="PSR12.Properties.ConstantVisibility.NotFound" />
 	</rule>
 	<file>.</file>
-	<arg name="extensions" value="php,php5,inc" />
-	<arg name="encoding" value="utf8" />
+	<arg name="extensions" value="php" />
+	<arg name="encoding" value="UTF-8" />
 	<exclude-pattern>vendor</exclude-pattern>
 </ruleset>
diff --git a/Gruntfile.js b/Gruntfile.js
index e258d993..e32386d1 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -8,7 +8,6 @@ module.exports = function ( grunt ) {
 	grunt.initConfig( {
 		eslint: {
 			options: {
-				extensions: [ '.js', '.json' ],
 				cache: true
 			},
 			all: [
diff --git a/composer.json b/composer.json
index 5fc76235..738a5145 100644
--- a/composer.json
+++ b/composer.json
@@ -15,6 +15,7 @@
 		"fix": [
 			"minus-x fix .",
 			"phpcbf"
-		]
+		],
+		"phan": "phan -d . --long-progress-bar"
 	}
 }
diff --git a/package-lock.json b/package-lock.json
index 62e0079e..aa767c98 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -105,10 +105,16 @@
 				"sprintf-js": "~1.0.2"
 			}
 		},
-		"array-find-index": {
-			"version": "1.0.2",
-			"resolved": "https://registry.npmjs.org/array-find-index/-/array-find-index-1.0.2.tgz",
-			"integrity": "sha1-3wEKoSh+Fku9pvlyOwqWoexBh6E=",
+		"array-each": {
+			"version": "1.0.1",
+			"resolved": "https://registry.npmjs.org/array-each/-/array-each-1.0.1.tgz",
+			"integrity": "sha1-p5SvDAWrF1KEbudTofIRoFugxE8=",
+			"dev": true
+		},
+		"array-slice": {
+			"version": "1.1.0",
+			"resolved": "https://registry.npmjs.org/array-slice/-/array-slice-1.1.0.tgz",
+			"integrity": "sha512-B1qMD3RBP7O8o0H2KbrXDyB0IccejMF15+87Lvlor12ONPRHP6gTjXMNkt/d3ZuOGbAe66hFmaCfECI24Ufp6w==",
 			"dev": true
 		},
 		"astral-regex": {
@@ -118,9 +124,9 @@
 			"dev": true
 		},
 		"async": {
-			"version": "1.5.2",
-			"resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
-			"integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=",
+			"version": "3.2.0",
+			"resolved": "https://registry.npmjs.org/async/-/async-3.2.0.tgz",
+			"integrity": "sha512-TR2mEZFVOj2pLStYxLht7TyfuRzaydfpxr3k9RpHIzMgw7A64dzsdqCxH1WJyQdoe8T10nDXd9wnEigmiuHIZw==",
 			"dev": true
 		},
 		"balanced-match": {
@@ -139,28 +145,21 @@
 				"concat-map": "0.0.1"
 			}
 		},
+		"braces": {
+			"version": "3.0.2",
+			"resolved": "https://registry.npmjs.org/braces/-/braces-3.0.2.tgz",
+			"integrity": "sha512-b8um+L1RzM3WDSzvhm6gIz1yfTbBt6YTlcEKAvsmqCZZFw46z626lVj9j1yEPW33H5H+lBQpZMP1k8l+78Ha0A==",
+			"dev": true,
+			"requires": {
+				"fill-range": "^7.0.1"
+			}
+		},
 		"callsites": {
 			"version": "3.1.0",
 			"resolved": "https://registry.npmjs.org/callsites/-/callsites-3.1.0.tgz",
 			"integrity": "sha512-P8BjAsXvZS+VIDUI11hHCQEv74YT67YUi5JJFNWIqL235sBmjX4+qx9Muvls5ivyNENctx46xQLQ3aTuE7ssaQ==",
 			"dev": true
 		},
-		"camelcase": {
-			"version": "2.1.1",
-			"resolved": "https://registry.npmjs.org/camelcase/-/camelcase-2.1.1.tgz",
-			"integrity": "sha1-fB0W1nmhu+WcoCys7PsBHiAfWh8=",
-			"dev": true
-		},
-		"camelcase-keys": {
-			"version": "2.1.0",
-			"resolved": "https://registry.npmjs.org/camelcase-keys/-/camelcase-keys-2.1.0.tgz",
-			"integrity": "sha1-MIvur/3ygRkFHvodkyITyRuPkuc=",
-			"dev": true,
-			"requires": {
-				"camelcase": "^2.0.0",
-				"map-obj": "^1.0.0"
-			}
-		},
 		"chalk": {
 			"version": "2.4.2",
 			"resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz",
@@ -193,12 +192,6 @@
 			"integrity": "sha512-GRMWDxpOB6Dgk2E5Uo+3eEBvtOOlimMmpbFiKuLFnQzYDavtLFY3K5ona41jgN/WdRZtG7utuVSVTL4HbZHGkw==",
 			"dev": true
 		},
-		"coffeescript": {
-			"version": "1.10.0",
-			"resolved": "https://registry.npmjs.org/coffeescript/-/coffeescript-1.10.0.tgz",
-			"integrity": "sha1-56qDAZF+9iGzXYo580jc3R234z4=",
-			"dev": true
-		},
 		"color-convert": {
 			"version": "1.9.3",
 			"resolved": "https://registry.npmjs.org/color-convert/-/color-convert-1.9.3.tgz",
@@ -254,24 +247,11 @@
 				}
 			}
 		},
-		"currently-unhandled": {
-			"version": "0.4.1",
-			"resolved": "https://registry.npmjs.org/currently-unhandled/-/currently-unhandled-0.4.1.tgz",
-			"integrity": "sha1-mI3zP+qxke95mmE2nddsF635V+o=",
-			"dev": true,
-			"requires": {
-				"array-find-index": "^1.0.1"
-			}
-		},
 		"dateformat": {
-			"version": "1.0.12",
-			"resolved": "https://registry.npmjs.org/dateformat/-/dateformat-1.0.12.tgz",
-			"integrity": "sha1-nxJLZ1lMk3/3BpMuSmQsyo27/uk=",
-			"dev": true,
-			"requires": {
-				"get-stdin": "^4.0.1",
-				"meow": "^3.3.0"
-			}
+			"version": "3.0.3",
+			"resolved": "https://registry.npmjs.org/dateformat/-/dateformat-3.0.3.tgz",
+			"integrity": "sha512-jyCETtSl3VMZMWeRo7iY1FL19ges1t55hMo5yaam4Jrsm5EPL89UQkoQRyiI+Yf4k8r2ZpdngkV8hr1lIdjb3Q==",
+			"dev": true
 		},
 		"debug": {
 			"version": "4.1.1",
@@ -282,18 +262,18 @@
 				"ms": "^2.1.1"
 			}
 		},
-		"decamelize": {
-			"version": "1.2.0",
-			"resolved": "https://registry.npmjs.org/decamelize/-/decamelize-1.2.0.tgz",
-			"integrity": "sha1-9lNNFRSCabIDUue+4m9QH5oZEpA=",
-			"dev": true
-		},
 		"deep-is": {
 			"version": "0.1.3",
 			"resolved": "https://registry.npmjs.org/deep-is/-/deep-is-0.1.3.tgz",
 			"integrity": "sha1-s2nW+128E+7PUk+RsHD+7cNXzzQ=",
 			"dev": true
 		},
+		"detect-file": {
+			"version": "1.0.0",
+			"resolved": "https://registry.npmjs.org/detect-file/-/detect-file-1.0.0.tgz",
+			"integrity": "sha1-8NZtA2cqglyxtzvbP+YjEMjlUrc=",
+			"dev": true
+		},
 		"doctrine": {
 			"version": "3.0.0",
 			"resolved": "https://registry.npmjs.org/doctrine/-/doctrine-3.0.0.tgz",
@@ -309,15 +289,6 @@
 			"integrity": "sha512-MSjYzcWNOA0ewAHpz0MxpYFvwg6yjy1NG3xteoqz644VCo/RPgnr1/GGt+ic3iJTzQ8Eu3TdM14SawnVUmGE6A==",
 			"dev": true
 		},
-		"error-ex": {
-			"version": "1.3.2",
-			"resolved": "https://registry.npmjs.org/error-ex/-/error-ex-1.3.2.tgz",
-			"integrity": "sha512-7dFHNmqeFSEt2ZBsCriorKnn3Z2pj+fd9kmI6QoWw4//DL+icEBfc0U7qJCisqrTsKTjw4fNFy2pW9OqStD84g==",
-			"dev": true,
-			"requires": {
-				"is-arrayish": "^0.2.1"
-			}
-		},
 		"escape-string-regexp": {
 			"version": "1.0.5",
 			"resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz",
@@ -669,6 +640,21 @@
 			"integrity": "sha1-BjJjj42HfMghB9MKD/8aF8uhzQw=",
 			"dev": true
 		},
+		"expand-tilde": {
+			"version": "2.0.2",
+			"resolved": "https://registry.npmjs.org/expand-tilde/-/expand-tilde-2.0.2.tgz",
+			"integrity": "sha1-l+gBqgUt8CRU3kawK/YhZCzchQI=",
+			"dev": true,
+			"requires": {
+				"homedir-polyfill": "^1.0.1"
+			}
+		},
+		"extend": {
+			"version": "3.0.2",
+			"resolved": "https://registry.npmjs.org/extend/-/extend-3.0.2.tgz",
+			"integrity": "sha512-fjquC59cD7CyW6urNXK0FBufkZcoiGG80wTuPujX590cB5Ttln20E2UB4S/WARVqhXffZl2LNgS+gQdPIIim/g==",
+			"dev": true
+		},
 		"external-editor": {
 			"version": "3.1.0",
 			"resolved": "https://registry.npmjs.org/external-editor/-/external-editor-3.1.0.tgz",
@@ -716,14 +702,13 @@
 				"flat-cache": "^2.0.1"
 			}
 		},
-		"find-up": {
-			"version": "1.1.2",
-			"resolved": "https://registry.npmjs.org/find-up/-/find-up-1.1.2.tgz",
-			"integrity": "sha1-ay6YIrGizgpgq2TWEOzK1TyyTQ8=",
+		"fill-range": {
+			"version": "7.0.1",
+			"resolved": "https://registry.npmjs.org/fill-range/-/fill-range-7.0.1.tgz",
+			"integrity": "sha512-qOo9F+dMUmC2Lcb4BbVvnKJxTPjCm+RRpe4gDuGrzkL7mEVl/djYSu2OdQ2Pa302N4oqkSg9ir6jaLWJ2USVpQ==",
 			"dev": true,
 			"requires": {
-				"path-exists": "^2.0.0",
-				"pinkie-promise": "^2.0.0"
+				"to-regex-range": "^5.0.1"
 			}
 		},
 		"findup-sync": {
@@ -750,6 +735,25 @@
 				}
 			}
 		},
+		"fined": {
+			"version": "1.2.0",
+			"resolved": "https://registry.npmjs.org/fined/-/fined-1.2.0.tgz",
+			"integrity": "sha512-ZYDqPLGxDkDhDZBjZBb+oD1+j0rA4E0pXY50eplAAOPg2N/gUBSSk5IM1/QhPfyVo19lJ+CvXpqfvk+b2p/8Ng==",
+			"dev": true,
+			"requires": {
+				"expand-tilde": "^2.0.2",
+				"is-plain-object": "^2.0.3",
+				"object.defaults": "^1.1.0",
+				"object.pick": "^1.2.0",
+				"parse-filepath": "^1.0.1"
+			}
+		},
+		"flagged-respawn": {
+			"version": "1.0.1",
+			"resolved": "https://registry.npmjs.org/flagged-respawn/-/flagged-respawn-1.0.1.tgz",
+			"integrity": "sha512-lNaHNVymajmk0OJMBn8fVUAU1BtDeKIqKoVhk4xAALB57aALg6b4W0MfJ/cUE0g9YBXy5XhSlPIpYIJ7HaY/3Q==",
+			"dev": true
+		},
 		"flat-cache": {
 			"version": "2.0.1",
 			"resolved": "https://registry.npmjs.org/flat-cache/-/flat-cache-2.0.1.tgz",
@@ -767,28 +771,43 @@
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 			"dev": true
 		},
+		"for-in": {
+			"version": "1.0.2",
+			"resolved": "https://registry.npmjs.org/for-in/-/for-in-1.0.2.tgz",
+			"integrity": "sha1-gQaNKVqBQuwKxybG4iAMMPttXoA=",
+			"dev": true
+		},
+		"for-own": {
+			"version": "1.0.0",
+			"resolved": "https://registry.npmjs.org/for-own/-/for-own-1.0.0.tgz",
+			"integrity": "sha1-xjMy9BXO3EsE2/5wz4NklMU8tEs=",
+			"dev": true,
+			"requires": {
+				"for-in": "^1.0.1"
+			}
+		},
 		"fs.realpath": {
 			"version": "1.0.0",
 			"resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
 			"integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
 			"dev": true
 		},
+		"function-bind": {
+			"version": "1.1.1",
+			"resolved": "https://registry.npmjs.org/function-bind/-/function-bind-1.1.1.tgz",
+			"integrity": "sha512-yIovAzMX49sF8Yl58fSCWJ5svSLuaibPxXQJFLmBObTuCr0Mf1KiPopGM9NiFjiYBCbfaa2Fh6breQ6ANVTI0A==",
+			"dev": true
+		},
 		"functional-red-black-tree": {
 			"version": "1.0.1",
 			"resolved": "https://registry.npmjs.org/functional-red-black-tree/-/functional-red-black-tree-1.0.1.tgz",
 			"integrity": "sha1-GwqzvVU7Kg1jmdKcDj6gslIHgyc=",
 			"dev": true
 		},
-		"get-stdin": {
-			"version": "4.0.1",
-			"resolved": "https://registry.npmjs.org/get-stdin/-/get-stdin-4.0.1.tgz",
-			"integrity": "sha1-uWjGsKBDhDJJAui/Gl3zJXmkUP4=",
-			"dev": true
-		},
 		"getobject": {
-			"version": "0.1.0",
-			"resolved": "https://registry.npmjs.org/getobject/-/getobject-0.1.0.tgz",
-			"integrity": "sha1-BHpEl4n6Fg0Bj1SG7ZEyC27HiFw=",
+			"version": "1.0.0",
+			"resolved": "https://registry.npmjs.org/getobject/-/getobject-1.0.0.tgz",
+			"integrity": "sha512-tbUz6AKKKr2YiMB+fLWIgq5ZeBOobop9YMMAU9dC54/ot2ksMXt3DOFyBuhZw6ptcVszEykgByK20j7W9jHFag==",
 			"dev": true
 		},
 		"glob": {
@@ -814,6 +833,30 @@
 				"is-glob": "^4.0.1"
 			}
 		},
+		"global-modules": {
+			"version": "1.0.0",
+			"resolved": "https://registry.npmjs.org/global-modules/-/global-modules-1.0.0.tgz",
+			"integrity": "sha512-sKzpEkf11GpOFuw0Zzjzmt4B4UZwjOcG757PPvrfhxcLFbq0wpsgpOqxpxtxFiCG4DtG93M6XRVbF2oGdev7bg==",
+			"dev": true,
+			"requires": {
+				"global-prefix": "^1.0.1",
+				"is-windows": "^1.0.1",
+				"resolve-dir": "^1.0.0"
+			}
+		},
+		"global-prefix": {
+			"version": "1.0.2",
+			"resolved": "https://registry.npmjs.org/global-prefix/-/global-prefix-1.0.2.tgz",
+			"integrity": "sha1-2/dDxsFJklk8ZVVoy2btMsASLr4=",
+			"dev": true,
+			"requires": {
+				"expand-tilde": "^2.0.2",
+				"homedir-polyfill": "^1.0.1",
+				"ini": "^1.3.4",
+				"is-windows": "^1.0.1",
+				"which": "^1.2.14"
+			}
+		},
 		"globals": {
 			"version": "12.4.0",
 			"resolved": "https://registry.npmjs.org/globals/-/globals-12.4.0.tgz",
@@ -823,61 +866,62 @@
 				"type-fest": "^0.8.1"
 			}
 		},
-		"graceful-fs": {
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-			"resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.2.3.tgz",
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-		},
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-			"integrity": "sha512-+NGod0grmviZ7Nzdi9am7vuRS/h76PcWDsV635mEXF0PEQMUV6Kb+OjTdsVxbi0PZmfQOjCMKb3w8CVZcqsn1g==",
+			"version": "1.4.0",
+			"resolved": "https://registry.npmjs.org/grunt/-/grunt-1.4.0.tgz",
+			"integrity": "sha512-yRFc0GVCDu9yxqOFzpuXQ2pEdgtLDnFv5Qz54jfIcNnpJ8Z7B7P7kPkT4VMuRvm+N+QOsI8C4v/Q0DSaoj3LgQ==",
 			"dev": true,
 			"requires": {
-				"coffeescript": "~1.10.0",
-				"dateformat": "~1.0.12",
+				"dateformat": "~3.0.3",
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-				"exit": "~0.1.1",
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-				"grunt-legacy-log": "~2.0.0",
-				"grunt-legacy-util": "~1.1.1",
+				"glob": "~7.1.6",
+				"grunt-cli": "~1.4.2",
+				"grunt-known-options": "~1.1.1",
+				"grunt-legacy-log": "~3.0.0",
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-				"js-yaml": "~3.13.1",
-				"minimatch": "~3.0.2",
-				"mkdirp": "~1.0.3",
+				"js-yaml": "~3.14.0",
+				"minimatch": "~3.0.4",
+				"mkdirp": "~1.0.4",
 				"nopt": "~3.0.6",
-				"path-is-absolute": "~1.0.0",
-				"rimraf": "~2.6.2"
+				"rimraf": "~3.0.2"
 			},
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-				"glob": {
-					"version": "7.0.6",
-					"resolved": "https://registry.npmjs.org/glob/-/glob-7.0.6.tgz",
-					"integrity": "sha1-IRuvr0nlJbjNkyYNFKsTYVKz9Xo=",
+				"grunt-cli": {
+					"version": "1.4.2",
+					"resolved": "https://registry.npmjs.org/grunt-cli/-/grunt-cli-1.4.2.tgz",
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 					"dev": true,
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-						"inflight": "^1.0.4",
-						"inherits": "2",
-						"minimatch": "^3.0.2",
-						"once": "^1.3.0",
-						"path-is-absolute": "^1.0.0"
+						"grunt-known-options": "~1.1.1",
+						"interpret": "~1.1.0",
+						"liftup": "~3.0.1",
+						"nopt": "~4.0.1",
+						"v8flags": "~3.2.0"
+					},
+					"dependencies": {
+						"nopt": {
+							"version": "4.0.3",
+							"resolved": "https://registry.npmjs.org/nopt/-/nopt-4.0.3.tgz",
+							"integrity": "sha512-CvaGwVMztSMJLOeXPrez7fyfObdZqNUK1cPAEzLHrTybIua9pMdmmPR5YwtfNftIOMv3DPUhFaxsZMNTQO20Kg==",
+							"dev": true,
+							"requires": {
+								"abbrev": "1",
+								"osenv": "^0.1.4"
+							}
+						}
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-				"grunt-cli": {
-					"version": "1.2.0",
-					"resolved": "https://registry.npmjs.org/grunt-cli/-/grunt-cli-1.2.0.tgz",
-					"integrity": "sha1-VisRnrsGndtGSs4oRVAb6Xs1tqg=",
+				"js-yaml": {
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+			"resolved": "https://registry.npmjs.org/v8flags/-/v8flags-3.2.0.tgz",
+			"integrity": "sha512-mH8etigqMfiGWdeXpaaqGfs6BndypxusHHcv2qSHyZkGEznCd/qAXCWWRzeowtL54147cktFOC4P5y+kl8d8Jg==",
 			"dev": true,
 			"requires": {
-				"spdx-correct": "^3.0.0",
-				"spdx-expression-parse": "^3.0.0"
+				"homedir-polyfill": "^1.0.1"
 			}
 		},
 		"vscode-json-languageservice": {
diff --git a/package.json b/package.json
index 03ff0559..f3793e20 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
 	},
 	"devDependencies": {
 		"eslint-config-wikimedia": "0.16.2",
-		"grunt": "1.1.0",
+		"grunt": "1.4.0",
 		"grunt-banana-checker": "0.9.0",
 		"grunt-eslint": "23.0.0"
 	}