diff --git a/.eslintignore b/.eslintignore
index a2d34c31..bf3d39bd 100644
--- a/.eslintignore
+++ b/.eslintignore
@@ -11,6 +11,7 @@
 /archive
 /mithril.js
 /mithril.min.js
+/stream/stream.min.js
 
 # And the examples are ignored (for now).
 /examples
diff --git a/.eslintrc.js b/.eslintrc.js
index a38c5e1b..e0734315 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -1,229 +1,231 @@
+"use strict"
+
 module.exports = {
-    "env": {
-        "browser": true,
-        "commonjs": true,
-        "es6": true,
-        "node": true
+	"env": {
+		"browser": true,
+		"commonjs": true,
+		"es6": true,
+		"node": true
 	},
-    "extends": "eslint:recommended",
-    "rules": {
-        "accessor-pairs": "error",
-        "array-bracket-spacing": [
-            "error",
-            "never"
-        ],
-        "array-callback-return": "error",
-        "arrow-body-style": "error",
-        "arrow-parens": "error",
-        "arrow-spacing": "error",
-        "block-scoped-var": "off",
-        "block-spacing": "off",
-        "brace-style": "off",
-        "callback-return": "off",
-        "camelcase": [
-            "error",
-            {
-                "properties": "never"
-            }
-        ],
-        "comma-dangle": [
-            "error",
-            "only-multiline"
-        ],
-        "comma-spacing": "off",
-        "comma-style": [
-            "error",
-            "last"
-        ],
-        "complexity": "off",
-        "computed-property-spacing": [
-            "error",
-            "never"
-        ],
-        "consistent-return": "off",
-        "consistent-this": "off",
-        "curly": "off",
-        "default-case": "off",
-        "dot-location": [
-            "error",
-            "property"
-        ],
-        "dot-notation": "off",
-        "eol-last": "off",
-        "eqeqeq": "off",
-        "func-names": "off",
-        "func-style": "off",
-        "generator-star-spacing": "error",
-        "global-require": "error",
-        "guard-for-in": "off",
-        "handle-callback-err": "error",
-        "id-blacklist": "error",
-        "id-length": "off",
-        "id-match": "error",
-        "indent": [
-            "warn",
-            "tab",
-            {
-                "outerIIFEBody": 0,
-                "SwitchCase": 1
-            }
-        ],
-        "init-declarations": "off",
-        "jsx-quotes": "error",
-        "key-spacing": "off",
-        "keyword-spacing": "off",
-        "linebreak-style": "off",
-        "lines-around-comment": "off",
-        "max-depth": "off",
-        "max-len": "off",
-        "max-nested-callbacks": "error",
-        "max-params": "off",
-        "max-statements": "off",
-        "max-statements-per-line": "off",
-        "new-parens": "off",
-        "newline-after-var": "off",
-        "newline-before-return": "off",
-        "newline-per-chained-call": "off",
-        "no-alert": "error",
-        "no-array-constructor": "error",
-        "no-bitwise": "error",
-        "no-caller": "error",
-        "no-catch-shadow": "off",
-        "no-cond-assign": "off",
-        "no-confusing-arrow": "error",
-        "no-console": "off",
-        "no-continue": "off",
-        "no-div-regex": "error",
-        "no-duplicate-imports": "error",
-        "no-else-return": "off",
-        "no-empty-function": "off",
-        "no-eq-null": "off",
-        "no-eval": "error",
-        "no-extend-native": "off",
-        "no-extra-bind": "error",
-        "no-extra-label": "error",
-        "no-extra-parens": "off",
-        "no-floating-decimal": "error",
-        "no-implicit-coercion": "error",
-        "no-implicit-globals": "error",
-        "no-implied-eval": "error",
-        "no-inline-comments": "off",
-        "no-invalid-this": "off",
-        "no-iterator": "error",
-        "no-label-var": "off",
-        "no-labels": "off",
-        "no-lone-blocks": "error",
-        "no-lonely-if": "off",
-        "no-loop-func": "off",
-        "no-magic-numbers": "off",
-        "no-mixed-requires": "error",
-        "no-multi-spaces": "error",
-        "no-multi-str": "error",
-        "no-multiple-empty-lines": "error",
-        "no-native-reassign": "error",
-        "no-negated-condition": "off",
-        "no-nested-ternary": "off",
-        "no-new": "off",
-        "no-new-func": "off",
-        "no-new-object": "error",
-        "no-new-require": "error",
-        "no-new-wrappers": "error",
-        "no-octal-escape": "error",
-        "no-param-reassign": "off",
-        "no-path-concat": "off",
-        "no-plusplus": "off",
-        "no-process-env": "error",
-        "no-process-exit": "error",
-        "no-proto": "error",
-        "no-redeclare": "off",
-        "no-restricted-globals": "error",
-        "no-restricted-imports": "error",
-        "no-restricted-modules": "error",
-        "no-restricted-syntax": "error",
-        "no-return-assign": "off",
-        "no-script-url": "error",
-        "no-self-compare": "error",
-        "no-sequences": "off",
-        "no-shadow": "off",
-        "no-shadow-restricted-names": "error",
-        "no-spaced-func": "error",
-        "no-sync": "off",
-        "no-ternary": "off",
-        "no-throw-literal": "off",
-        "no-trailing-spaces": [
-            "error",
-            {
-                "skipBlankLines": true
-            }
-        ],
-        "no-undef-init": "error",
-        "no-undefined": "off",
-        "no-underscore-dangle": "off",
-        "no-unmodified-loop-condition": "error",
-        "no-unneeded-ternary": "error",
-        "no-unused-expressions": "off",
-        "no-use-before-define": "off",
-        "no-useless-call": "error",
-        "no-useless-concat": "error",
-        "no-useless-constructor": "error",
-        "no-useless-escape": "off",
-        "no-var": "off",
-        "no-void": "off",
-        "no-warning-comments": "off",
-        "no-whitespace-before-property": "error",
-        "no-with": "error",
-        "object-curly-spacing": [
-            "error",
-            "never"
-        ],
-        "object-shorthand": "off",
-        "one-var": "off",
-        "one-var-declaration-per-line": "off",
-        "operator-assignment": [
-            "error",
-            "always"
-        ],
-        "operator-linebreak": "off",
-        "padded-blocks": "off",
-        "prefer-arrow-callback": "off",
-        "prefer-const": "error",
-        "prefer-reflect": "off",
-        "prefer-rest-params": "off",
-        "prefer-spread": "off",
-        "prefer-template": "off",
-        "quote-props": "off",
-        "quotes": [
-            "error",
-            "double",
-            {"avoidEscape": true}
-        ],
-        "radix": [
-            "error",
-            "always"
-        ],
-        "require-jsdoc": "off",
-        "require-yield": "error",
-        "semi": "off",
-        "semi-spacing": "off",
-        "sort-imports": "error",
-        "sort-vars": "off",
-        "space-before-blocks": "off",
-        "space-before-function-paren": "off",
-        "space-in-parens": [
-            "error",
-            "never"
-        ],
-        "space-infix-ops": "off",
-        "space-unary-ops": "error",
-        "spaced-comment": "off",
-        "strict": ["error", "global"],
-        "template-curly-spacing": "error",
-        "valid-jsdoc": "off",
-        "vars-on-top": "off",
-        "wrap-iife": "off",
-        "wrap-regex": "error",
-        "yield-star-spacing": "error",
-        "yoda": "off"
-    },
-    "root": true
+	"extends": "eslint:recommended",
+	"rules": {
+		"accessor-pairs": "error",
+		"array-bracket-spacing": [
+			"error",
+			"never"
+		],
+		"array-callback-return": "error",
+		"arrow-body-style": "error",
+		"arrow-parens": "error",
+		"arrow-spacing": "error",
+		"block-scoped-var": "off",
+		"block-spacing": "off",
+		"brace-style": "off",
+		"callback-return": "off",
+		"camelcase": [
+			"error",
+			{
+				"properties": "never"
+			}
+		],
+		"comma-dangle": [
+			"error",
+			"only-multiline"
+		],
+		"comma-spacing": "off",
+		"comma-style": [
+			"error",
+			"last"
+		],
+		"complexity": "off",
+		"computed-property-spacing": [
+			"error",
+			"never"
+		],
+		"consistent-return": "off",
+		"consistent-this": "off",
+		"curly": "off",
+		"default-case": "off",
+		"dot-location": [
+			"error",
+			"property"
+		],
+		"dot-notation": "off",
+		"eol-last": "off",
+		"eqeqeq": "off",
+		"func-names": "off",
+		"func-style": "off",
+		"generator-star-spacing": "error",
+		"global-require": "error",
+		"guard-for-in": "off",
+		"handle-callback-err": "error",
+		"id-blacklist": "error",
+		"id-length": "off",
+		"id-match": "error",
+		"indent": [
+			"warn",
+			"tab",
+			{
+				"outerIIFEBody": 0,
+				"SwitchCase": 1
+			}
+		],
+		"init-declarations": "off",
+		"jsx-quotes": "error",
+		"key-spacing": "off",
+		"keyword-spacing": "off",
+		"linebreak-style": "off",
+		"lines-around-comment": "off",
+		"max-depth": "off",
+		"max-len": "off",
+		"max-nested-callbacks": "error",
+		"max-params": "off",
+		"max-statements": "off",
+		"max-statements-per-line": "off",
+		"new-parens": "off",
+		"newline-after-var": "off",
+		"newline-before-return": "off",
+		"newline-per-chained-call": "off",
+		"no-alert": "error",
+		"no-array-constructor": "error",
+		"no-bitwise": "error",
+		"no-caller": "error",
+		"no-catch-shadow": "off",
+		"no-cond-assign": "off",
+		"no-confusing-arrow": "error",
+		"no-console": "off",
+		"no-continue": "off",
+		"no-div-regex": "error",
+		"no-duplicate-imports": "error",
+		"no-else-return": "off",
+		"no-empty-function": "off",
+		"no-eq-null": "off",
+		"no-eval": "error",
+		"no-extend-native": "off",
+		"no-extra-bind": "error",
+		"no-extra-label": "error",
+		"no-extra-parens": "off",
+		"no-floating-decimal": "error",
+		"no-implicit-coercion": "error",
+		"no-implicit-globals": "error",
+		"no-implied-eval": "error",
+		"no-inline-comments": "off",
+		"no-invalid-this": "off",
+		"no-iterator": "error",
+		"no-label-var": "off",
+		"no-labels": "off",
+		"no-lone-blocks": "error",
+		"no-lonely-if": "off",
+		"no-loop-func": "off",
+		"no-magic-numbers": "off",
+		"no-mixed-requires": "error",
+		"no-multi-spaces": "error",
+		"no-multi-str": "error",
+		"no-multiple-empty-lines": "error",
+		"no-native-reassign": "error",
+		"no-negated-condition": "off",
+		"no-nested-ternary": "off",
+		"no-new": "off",
+		"no-new-func": "off",
+		"no-new-object": "error",
+		"no-new-require": "error",
+		"no-new-wrappers": "error",
+		"no-octal-escape": "error",
+		"no-param-reassign": "off",
+		"no-path-concat": "off",
+		"no-plusplus": "off",
+		"no-process-env": "error",
+		"no-process-exit": "error",
+		"no-proto": "error",
+		"no-redeclare": "off",
+		"no-restricted-globals": "error",
+		"no-restricted-imports": "error",
+		"no-restricted-modules": "error",
+		"no-restricted-syntax": "error",
+		"no-return-assign": "off",
+		"no-script-url": "error",
+		"no-self-compare": "error",
+		"no-sequences": "off",
+		"no-shadow": "off",
+		"no-shadow-restricted-names": "error",
+		"no-spaced-func": "error",
+		"no-sync": "off",
+		"no-ternary": "off",
+		"no-throw-literal": "off",
+		"no-trailing-spaces": [
+			"error",
+			{
+				"skipBlankLines": true
+			}
+		],
+		"no-undef-init": "error",
+		"no-undefined": "off",
+		"no-underscore-dangle": "off",
+		"no-unmodified-loop-condition": "error",
+		"no-unneeded-ternary": "error",
+		"no-unused-expressions": "off",
+		"no-use-before-define": "off",
+		"no-useless-call": "error",
+		"no-useless-concat": "error",
+		"no-useless-constructor": "error",
+		"no-useless-escape": "off",
+		"no-var": "off",
+		"no-void": "off",
+		"no-warning-comments": "off",
+		"no-whitespace-before-property": "error",
+		"no-with": "error",
+		"object-curly-spacing": [
+			"error",
+			"never"
+		],
+		"object-shorthand": "off",
+		"one-var": "off",
+		"one-var-declaration-per-line": "off",
+		"operator-assignment": [
+			"error",
+			"always"
+		],
+		"operator-linebreak": "off",
+		"padded-blocks": "off",
+		"prefer-arrow-callback": "off",
+		"prefer-const": "error",
+		"prefer-reflect": "off",
+		"prefer-rest-params": "off",
+		"prefer-spread": "off",
+		"prefer-template": "off",
+		"quote-props": "off",
+		"quotes": [
+			"error",
+			"double",
+			{"avoidEscape": true}
+		],
+		"radix": [
+			"error",
+			"always"
+		],
+		"require-jsdoc": "off",
+		"require-yield": "error",
+		"semi": "off",
+		"semi-spacing": "off",
+		"sort-imports": "error",
+		"sort-vars": "off",
+		"space-before-blocks": "off",
+		"space-before-function-paren": "off",
+		"space-in-parens": [
+			"error",
+			"never"
+		],
+		"space-infix-ops": "off",
+		"space-unary-ops": "error",
+		"spaced-comment": "off",
+		"strict": ["error", "global"],
+		"template-curly-spacing": "error",
+		"valid-jsdoc": "off",
+		"vars-on-top": "off",
+		"wrap-iife": "off",
+		"wrap-regex": "error",
+		"yield-star-spacing": "error",
+		"yoda": "off"
+	},
+	"root": true
 };
diff --git a/promise/.eslintrc.js b/promise/.eslintrc.js
index 48e3a834..57fdcaba 100644
--- a/promise/.eslintrc.js
+++ b/promise/.eslintrc.js
@@ -1,13 +1,15 @@
+"use strict"
+
 module.exports = {
-    "extends": "../.eslintrc.js",
+	"extends": "../.eslintrc.js",
 	"env": {
-        "browser": null,
-        "es6": null,
+		"browser": null,
+		"es6": null,
+	},
+	"parserOptions": {
+		"ecmaVersion": 5,
+	},
+	"rules": {
+		"no-process-env": "off",
 	},
-    "parserOptions": {
-        "ecmaVersion": 5,
-    },
-    "rules": {
-        "no-process-env": "off",
-    },
 };
diff --git a/scripts/.eslintrc.js b/scripts/.eslintrc.js
index f31bec11..444d2b5a 100644
--- a/scripts/.eslintrc.js
+++ b/scripts/.eslintrc.js
@@ -1,12 +1,14 @@
+"use strict"
+
 module.exports = {
-    "extends": "../.eslintrc.js",
+	"extends": "../.eslintrc.js",
 	"env": {
-        "browser": null,
+		"browser": null,
+	},
+	"parserOptions": {
+		"ecmaVersion": 2019,
+	},
+	"rules": {
+		"no-process-env": "off",
 	},
-    "parserOptions": {
-        "ecmaVersion": 2019,
-    },
-    "rules": {
-        "no-process-env": "off",
-    },
 };
diff --git a/test-utils/domMock.js b/test-utils/domMock.js
index 7e26e9a8..0140a210 100644
--- a/test-utils/domMock.js
+++ b/test-utils/domMock.js
@@ -503,7 +503,7 @@ module.exports = function(options) {
 						set: function(v) {
 							if (this.getAttribute("type") !== "date") throw new Error("invalid state")
 							var time = new Date(v).getTime()
-							return valueSetter(isNaN(time) ? "" : new Date(time).toUTCString())
+							valueSetter(isNaN(time) ? "" : new Date(time).toUTCString())
 						},
 						enumerable: true,
 					})
@@ -519,8 +519,8 @@ module.exports = function(options) {
 							v = Number(v)
 							if (!isNaN(v) && !isFinite(v)) throw new TypeError("infinite value")
 							switch (this.getAttribute("type")) {
-								case "date": return valueSetter(isNaN(v) ? "" : new Date(v).toUTCString())
-								case "number": return valueSetter(String(value))
+								case "date": valueSetter(isNaN(v) ? "" : new Date(v).toUTCString()); break;
+								case "number": valueSetter(String(value)); break;
 								default: throw new Error("invalid state")
 							}
 						},