upgrade dev tooling setup

- force `git` to keep original line-endings (tests fail otherwise) - pin `@types/node` to v8 (was: v10) - update `eslint` and plugins - update `typescript`, `tslib`, `ts-node` - add typescript's native typechecking as `typecheck` npm script - add `typescript-eslint` and enable linting in ts files - remove redundant eslint rules - add `eol-last`, `no-trailing-spaces` and `dot-notation` rules `eslint`, `prettier` and `editorconfig` settings used to conflict with each other, so I aligned them (where possible) to the `eslint` rules TODO: fix all linting errors in typescript TODO: refactor typescript interfaces to make compilation type-safe
6 years ago · 32a47c5642
parent 7265fd4e83
commit 32a47c5642
9 changed files with 548 additions and 305 deletions
--- a/.editorconfig
+++ b/.editorconfig
@ -1,16 +1,12 @@
 root = true

 [*]
+charset = utf-8
 end_of_line = lf
-insert_final_newline = true
-indent_style = tab
 indent_size = 2
-charset = utf-8
-trim_trailing_whitespace = true
-
-[test/**/expected.css]
+indent_style = tab
 insert_final_newline = false
+trim_trailing_whitespace = true

-[{package.json,.travis.yml,.eslintrc.json}]
-indent_style = space
-indent_size = 2
+[.travis.yml]
+indent_style = space
--- a/.eslintrc.js
+++ b/.eslintrc.js
@ -0,0 +1,52 @@
+module.exports = {
+	root: true,
+
+	rules: {
+		// automatically fixable stylistic rules
+		'arrow-spacing': 2,
+		'comma-dangle': [2, 'never'],
+		'dot-notation': 2,
+		'eol-last': [2, 'never'],
+		indent: [2, 'tab', { SwitchCase: 1 }],
+		'keyword-spacing': [2, { before: true, after: true }],
+		'no-trailing-spaces': 2,
+		'no-var': 2,
+		'object-shorthand': [2, 'always'],
+		'one-var': [2, 'never'],
+		'prefer-arrow-callback': 2,
+		'prefer-const': [2, { destructuring: 'all' }],
+		'quote-props': [2, 'as-needed'],
+		semi: [2, 'always'],
+		'space-before-blocks': [2, 'always'],
+
+		// eslint:recommended overrides
+		'no-cond-assign': 0,
+		'no-inner-declarations': 0,
+		'no-mixed-spaces-and-tabs': [2, 'smart-tabs']
+	},
+
+	plugins: ['@typescript-eslint'],
+
+	extends: [
+		'eslint:recommended',
+		'plugin:import/errors',
+		'plugin:import/warnings',
+		'plugin:import/typescript'
+		// TODO: fix typerscript files
+		// 'plugin:@typescript-eslint/recommended',
+	],
+
+	parser: '@typescript-eslint/parser',
+	parserOptions: {
+		ecmaVersion: 9,
+		sourceType: 'module',
+		project: './tsconfig.json'
+	},
+
+	env: {
+		es6: true,
+		browser: true,
+		node: true,
+		mocha: true
+	}
+};
--- a/.eslintrc.json
+++ b/.eslintrc.json
@ -1,44 +0,0 @@
-{
-	"root": true,
-	"rules": {
-		"indent": [2, "tab", { "SwitchCase": 1 }],
-		"semi": [2, "always"],
-		"keyword-spacing": [2, { "before": true, "after": true }],
-		"space-before-blocks": [2, "always"],
-		"no-mixed-spaces-and-tabs": [2, "smart-tabs"],
-		"no-cond-assign": 0,
-		"no-unused-vars": 2,
-		"object-shorthand": [2, "always"],
-		"no-const-assign": 2,
-		"no-class-assign": 2,
-		"no-this-before-super": 2,
-		"no-var": 2,
-		"no-unreachable": 2,
-		"valid-typeof": 2,
-		"quote-props": [2, "as-needed"],
-		"one-var": [2, "never"],
-		"prefer-arrow-callback": 2,
-		"prefer-const": [2, { "destructuring": "all" }],
-		"arrow-spacing": 2,
-		"no-inner-declarations": 0
-	},
-	"env": {
-		"es6": true,
-		"browser": true,
-		"node": true,
-		"mocha": true
-	},
-	"extends": [
-		"eslint:recommended",
-		"plugin:import/errors",
-		"plugin:import/warnings"
-	],
-	"parserOptions": {
-		"ecmaVersion": 9,
-		"sourceType": "module"
-	},
-	"settings": {
-		"import/core-modules": ["svelte"],
-		"svelte3/extensions": ["html"]
-	}
-}
--- a/.gitattributes
+++ b/.gitattributes
@ -1 +1,2 @@
-*.svelte linguist-language=HTML
+* text=auto eol=lf
+*.svelte linguist-language=HTML
--- a/.prettierrc
+++ b/.prettierrc
@ -1,3 +0,0 @@
-useTabs: true
-singleQuote: true
-trailingComma: es5
--- a/.prettierrc.js
+++ b/.prettierrc.js
@ -0,0 +1,9 @@
+module.exports = {
+	arrowParens: 'avoid',
+	endOfLine: 'lf',
+	quoteProps: 'as-needed',
+	semi: true,
+	singleQuote: true,
+	trailingComma: 'none',
+	useTabs: true
+};
--- a/package-lock.json
+++ b/package-lock.json
@ -1,6 +1,6 @@
 {
  "name": "svelte",
-  "version": "3.4.0",
+  "version": "3.4.1",
  "lockfileVersion": 1,
  "requires": true,
  "dependencies": {
@ -59,11 +59,65 @@
      "dev": true
    },
    "@types/node": {
-      "version": "10.12.18",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-10.12.18.tgz",
-      "integrity": "sha512-fh+pAqt4xRzPfqA6eh3Z2y6fyZavRIumvjhaCL753+TVkGKGhpPeyrJG2JftD0T9q4GF00KjefsQ+PQNDdWQaQ==",
+      "version": "8.10.48",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-8.10.48.tgz",
+      "integrity": "sha512-c35YEBTkL4rzXY2ucpSKy+UYHjUBIIkuJbWYbsGIrKLEWU5dgJMmLkkIb3qeC3O3Tpb1ZQCwecscvJTDjDjkRw==",
      "dev": true
    },
+    "@typescript-eslint/eslint-plugin": {
+      "version": "1.9.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-1.9.0.tgz",
+      "integrity": "sha512-FOgfBorxjlBGpDIw+0LaZIXRX6GEEUfzj8LXwaQIUCp+gDOvkI+1WgugJ7SmWiISqK9Vj5r8S7NDKO/LB+6X9A==",
+      "dev": true,
+      "requires": {
+        "@typescript-eslint/experimental-utils": "1.9.0",
+        "@typescript-eslint/parser": "1.9.0",
+        "eslint-utils": "^1.3.1",
+        "functional-red-black-tree": "^1.0.1",
+        "regexpp": "^2.0.1",
+        "requireindex": "^1.2.0",
+        "tsutils": "^3.7.0"
+      }
+    },
+    "@typescript-eslint/experimental-utils": {
+      "version": "1.9.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/experimental-utils/-/experimental-utils-1.9.0.tgz",
+      "integrity": "sha512-1s2dY9XxBwtS9IlSnRIlzqILPyeMly5tz1bfAmQ84Ul687xBBve5YsH5A5EKeIcGurYYqY2w6RkHETXIwnwV0A==",
+      "dev": true,
+      "requires": {
+        "@typescript-eslint/typescript-estree": "1.9.0"
+      }
+    },
+    "@typescript-eslint/parser": {
+      "version": "1.9.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/parser/-/parser-1.9.0.tgz",
+      "integrity": "sha512-CWgC1XrQ34H/+LwAU7vY5xteZDkNqeAkeidEpJnJgkKu0yqQ3ZhQ7S+dI6MX4vmmM1TKRbOrKuXc6W0fIHhdbA==",
+      "dev": true,
+      "requires": {
+        "@typescript-eslint/experimental-utils": "1.9.0",
+        "@typescript-eslint/typescript-estree": "1.9.0",
+        "eslint-scope": "^4.0.0",
+        "eslint-visitor-keys": "^1.0.0"
+      }
+    },
+    "@typescript-eslint/typescript-estree": {
+      "version": "1.9.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/typescript-estree/-/typescript-estree-1.9.0.tgz",
+      "integrity": "sha512-7Eg0TEQpCkTsEwsl1lIzd6i7L3pJLQFWesV08dS87bNz0NeSjbL78gNAP1xCKaCejkds4PhpLnZkaAjx9SU8OA==",
+      "dev": true,
+      "requires": {
+        "lodash.unescape": "4.0.1",
+        "semver": "5.5.0"
+      },
+      "dependencies": {
+        "semver": {
+          "version": "5.5.0",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-5.5.0.tgz",
+          "integrity": "sha512-4SJ3dm0WAwWy/NVeioZh5AntkdJoWKxHxcmyP622fOkgHa4z3R0TdBJICINyaSDE6uNwVc8gZr+ZinwZAH4xIA==",
+          "dev": true
+        }
+      }
+    },
    "abab": {
      "version": "2.0.0",
      "resolved": "https://registry.npmjs.org/abab/-/abab-2.0.0.tgz",
@ -148,9 +202,9 @@
      }
    },
    "ansi-escapes": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-3.1.0.tgz",
-      "integrity": "sha512-UgAb8H9D41AQnu/PbWlCofQVcnV4Gs2bBJi9eZPxfU/hgglFh3SMDMENRIqdr7H6XFnXdoknctFByVsCOotTVw==",
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-3.2.0.tgz",
+      "integrity": "sha512-cBhpre4ma+U0T1oM5fXg7Dy1Jw7zzwv7lt/GoCpr+hDQJoYnKVPLL4dCvSEFMmQurOQvSrwT7SL/DAlhBI97RQ==",
      "dev": true
    },
    "ansi-regex": {
@ -213,6 +267,16 @@
      "integrity": "sha1-jCpe8kcv2ep0KwTHenUJO6J1fJM=",
      "dev": true
    },
+    "array-includes": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/array-includes/-/array-includes-3.0.3.tgz",
+      "integrity": "sha1-GEtI9i2S10UrsxsyMWXH+L0CJm0=",
+      "dev": true,
+      "requires": {
+        "define-properties": "^1.1.2",
+        "es-abstract": "^1.7.0"
+      }
+    },
    "arrify": {
      "version": "1.0.1",
      "resolved": "https://registry.npmjs.org/arrify/-/arrify-1.0.1.tgz",
@ -484,9 +548,9 @@
      }
    },
    "callsites": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/callsites/-/callsites-3.0.0.tgz",
-      "integrity": "sha512-tWnkwu9YEq2uzlBDI4RcLn8jrFvF9AOi8PxDNU3hZZjJcjkcRAq3vCI+vZcg1SuxISDYe86k9VZFwAxDiJGoAw==",
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/callsites/-/callsites-3.1.0.tgz",
+      "integrity": "sha512-P8BjAsXvZS+VIDUI11hHCQEv74YT67YUi5JJFNWIqL235sBmjX4+qx9Muvls5ivyNENctx46xQLQ3aTuE7ssaQ==",
      "dev": true
    },
    "caseless": {
@ -512,12 +576,6 @@
      "integrity": "sha512-mT8iDcrh03qDGRRmoA2hmBJnxpllMR+0/0qlzjqZES6NdiWDcZkCNAk4rPFZ9Q85r27unkiNNg8ZOiwZXBHwcA==",
      "dev": true
    },
-    "circular-json": {
-      "version": "0.3.3",
-      "resolved": "https://registry.npmjs.org/circular-json/-/circular-json-0.3.3.tgz",
-      "integrity": "sha512-UZK3NBx2Mca+b5LsG7bY183pHWt5Y1xts4P3Pz7ENTwGVnJOUWbRb3ocjvX7hx9tq/yTAdclXm9sZ38gNuem4A==",
-      "dev": true
-    },
    "class-utils": {
      "version": "0.3.6",
      "resolved": "https://registry.npmjs.org/class-utils/-/class-utils-0.3.6.tgz",
@ -799,6 +857,15 @@
      "integrity": "sha1-s2nW+128E+7PUk+RsHD+7cNXzzQ=",
      "dev": true
    },
+    "define-properties": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/define-properties/-/define-properties-1.1.3.tgz",
+      "integrity": "sha512-3MqfYKj2lLzdMSf8ZIZE/V+Zuy+BgD6f164e8K2w7dgnpKArBDerGYpM46IYYcjnkdPNMjPk9A6VFB8+3SKlXQ==",
+      "dev": true,
+      "requires": {
+        "object-keys": "^1.0.12"
+      }
+    },
    "define-property": {
      "version": "2.0.2",
      "resolved": "https://registry.npmjs.org/define-property/-/define-property-2.0.2.tgz",
@ -865,30 +932,22 @@
      "dev": true
    },
    "doctrine": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/doctrine/-/doctrine-2.1.0.tgz",
-      "integrity": "sha512-35mSku4ZXK0vfCuHEDAwt55dg2jNajHZ1odvF+8SSr82EsZY4QmXfuWso8oEd8zRhVObSN18aM0CjSdoBX7zIw==",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/doctrine/-/doctrine-3.0.0.tgz",
+      "integrity": "sha512-yS+Q5i3hBf7GBkd4KG8a7eBNNWNGLTaEwwYWUijIYM7zrlYDM0BFXHjjPWlWZ1Rg7UaddZeIDmi9jF3HmqiQ2w==",
      "dev": true,
      "requires": {
        "esutils": "^2.0.2"
      }
    },
    "dom-serializer": {
-      "version": "0.1.0",
-      "resolved": "https://registry.npmjs.org/dom-serializer/-/dom-serializer-0.1.0.tgz",
-      "integrity": "sha1-BzxpdUbOB4DOI75KKOKT5AvDDII=",
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/dom-serializer/-/dom-serializer-0.1.1.tgz",
+      "integrity": "sha512-l0IU0pPzLWSHBcieZbpOKgkIn3ts3vAh7ZuFyXNwJxJXk/c4Gwj9xaTJwIDVQCXawWD0qb3IzMGH5rglQaO0XA==",
      "dev": true,
      "requires": {
-        "domelementtype": "~1.1.1",
-        "entities": "~1.1.1"
-      },
-      "dependencies": {
-        "domelementtype": {
-          "version": "1.1.3",
-          "resolved": "https://registry.npmjs.org/domelementtype/-/domelementtype-1.1.3.tgz",
-          "integrity": "sha1-vSh3PiZCiBrsUVRJJCmcXNgiGFs=",
-          "dev": true
-        }
+        "domelementtype": "^1.3.0",
+        "entities": "^1.1.1"
      }
    },
    "domelementtype": {
@ -935,6 +994,12 @@
        "safer-buffer": "^2.1.0"
      }
    },
+    "emoji-regex": {
+      "version": "7.0.3",
+      "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-7.0.3.tgz",
+      "integrity": "sha512-CwBLREIQ7LvYFB0WyRvwhq5N5qPhc6PMjD6bYggFlI5YyDgl+0vxq5VHbMOFqLg7hfWzmu8T5Z1QofhmTIhItA==",
+      "dev": true
+    },
    "end-of-stream": {
      "version": "1.4.1",
      "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.1.tgz",
@ -959,6 +1024,31 @@
        "is-arrayish": "^0.2.1"
      }
    },
+    "es-abstract": {
+      "version": "1.13.0",
+      "resolved": "https://registry.npmjs.org/es-abstract/-/es-abstract-1.13.0.tgz",
+      "integrity": "sha512-vDZfg/ykNxQVwup/8E1BZhVzFfBxs9NqMzGcvIJrqg5k2/5Za2bWo40dK2J1pgLngZ7c+Shh8lwYtLGyrwPutg==",
+      "dev": true,
+      "requires": {
+        "es-to-primitive": "^1.2.0",
+        "function-bind": "^1.1.1",
+        "has": "^1.0.3",
+        "is-callable": "^1.1.4",
+        "is-regex": "^1.0.4",
+        "object-keys": "^1.0.12"
+      }
+    },
+    "es-to-primitive": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/es-to-primitive/-/es-to-primitive-1.2.0.tgz",
+      "integrity": "sha512-qZryBOJjV//LaxLTV6UC//WewneB3LcXOL9NP++ozKVXsIIIpm/2c13UDiD9Jp2eThsecw9m3jPqDwTyobcdbg==",
+      "dev": true,
+      "requires": {
+        "is-callable": "^1.1.4",
+        "is-date-object": "^1.0.1",
+        "is-symbol": "^1.0.2"
+      }
+    },
    "es6-promise": {
      "version": "4.2.6",
      "resolved": "https://registry.npmjs.org/es6-promise/-/es6-promise-4.2.6.tgz",
@ -1002,48 +1092,61 @@
      }
    },
    "eslint": {
-      "version": "5.12.1",
-      "resolved": "https://registry.npmjs.org/eslint/-/eslint-5.12.1.tgz",
-      "integrity": "sha512-54NV+JkTpTu0d8+UYSA8mMKAG4XAsaOrozA9rCW7tgneg1mevcL7wIotPC+fZ0SkWwdhNqoXoxnQCTBp7UvTsg==",
+      "version": "5.16.0",
+      "resolved": "https://registry.npmjs.org/eslint/-/eslint-5.16.0.tgz",
+      "integrity": "sha512-S3Rz11i7c8AA5JPv7xAH+dOyq/Cu/VXHiHXBPOU1k/JAM5dXqQPt3qcrhpHSorXmrpu2g0gkIBVXAqCpzfoZIg==",
      "dev": true,
      "requires": {
        "@babel/code-frame": "^7.0.0",
-        "ajv": "^6.5.3",
+        "ajv": "^6.9.1",
        "chalk": "^2.1.0",
        "cross-spawn": "^6.0.5",
        "debug": "^4.0.1",
-        "doctrine": "^2.1.0",
-        "eslint-scope": "^4.0.0",
+        "doctrine": "^3.0.0",
+        "eslint-scope": "^4.0.3",
        "eslint-utils": "^1.3.1",
        "eslint-visitor-keys": "^1.0.0",
-        "espree": "^5.0.0",
+        "espree": "^5.0.1",
        "esquery": "^1.0.1",
        "esutils": "^2.0.2",
-        "file-entry-cache": "^2.0.0",
+        "file-entry-cache": "^5.0.1",
        "functional-red-black-tree": "^1.0.1",
        "glob": "^7.1.2",
        "globals": "^11.7.0",
        "ignore": "^4.0.6",
        "import-fresh": "^3.0.0",
        "imurmurhash": "^0.1.4",
-        "inquirer": "^6.1.0",
-        "js-yaml": "^3.12.0",
+        "inquirer": "^6.2.2",
+        "js-yaml": "^3.13.0",
        "json-stable-stringify-without-jsonify": "^1.0.1",
        "levn": "^0.3.0",
-        "lodash": "^4.17.5",
+        "lodash": "^4.17.11",
        "minimatch": "^3.0.4",
        "mkdirp": "^0.5.1",
        "natural-compare": "^1.4.0",
        "optionator": "^0.8.2",
        "path-is-inside": "^1.0.2",
-        "pluralize": "^7.0.0",
        "progress": "^2.0.0",
        "regexpp": "^2.0.1",
        "semver": "^5.5.1",
        "strip-ansi": "^4.0.0",
        "strip-json-comments": "^2.0.1",
-        "table": "^5.0.2",
+        "table": "^5.2.3",
        "text-table": "^0.2.0"
+      },
+      "dependencies": {
+        "ajv": {
+          "version": "6.10.0",
+          "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.10.0.tgz",
+          "integrity": "sha512-nffhOpkymDECQyR0mnsUtoCE8RlX38G0rYP+wgLWFyZuUyuuojSSvi/+euOiQBIn63whYwYVIIH1TvE3tu4OEg==",
+          "dev": true,
+          "requires": {
+            "fast-deep-equal": "^2.0.1",
+            "fast-json-stable-stringify": "^2.0.0",
+            "json-schema-traverse": "^0.4.1",
+            "uri-js": "^4.2.2"
+          }
+        }
      }
    },
    "eslint-import-resolver-node": {
@ -1074,9 +1177,9 @@
      }
    },
    "eslint-module-utils": {
-      "version": "2.3.0",
-      "resolved": "https://registry.npmjs.org/eslint-module-utils/-/eslint-module-utils-2.3.0.tgz",
-      "integrity": "sha512-lmDJgeOOjk8hObTysjqH7wyMi+nsHwwvfBykwfhjR1LNdd7C2uFJBvx4OpWYpXOw4df1yE1cDEVd1yLHitk34w==",
+      "version": "2.4.0",
+      "resolved": "https://registry.npmjs.org/eslint-module-utils/-/eslint-module-utils-2.4.0.tgz",
+      "integrity": "sha512-14tltLm38Eu3zS+mt0KvILC3q8jyIAH518MlG+HO0p+yK885Lb1UHTY/UgR91eOyGdmxAPb+OLoW4znqIT6Ndw==",
      "dev": true,
      "requires": {
        "debug": "^2.6.8",
@ -1101,30 +1204,31 @@
      }
    },
    "eslint-plugin-html": {
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+          "integrity": "sha512-nffhOpkymDECQyR0mnsUtoCE8RlX38G0rYP+wgLWFyZuUyuuojSSvi/+euOiQBIn63whYwYVIIH1TvE3tu4OEg==",
+          "dev": true,
+          "requires": {
+            "fast-deep-equal": "^2.0.1",
+            "fast-json-stable-stringify": "^2.0.0",
+            "json-schema-traverse": "^0.4.1",
+            "uri-js": "^4.2.2"
+          }
+        },
+        "ansi-regex": {
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-4.1.0.tgz",
+          "integrity": "sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==",
+          "dev": true
+        },
+        "string-width": {
+          "version": "3.1.0",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-3.1.0.tgz",
+          "integrity": "sha512-vafcv6KjVZKSgz06oM/H6GDBrAtz8vdhQakGjFIvNrHA6y3HCF1CInLy+QLq8dTJPQ1b+KDUqDFctkdRW44e1w==",
+          "dev": true,
+          "requires": {
+            "emoji-regex": "^7.0.1",
+            "is-fullwidth-code-point": "^2.0.0",
+            "strip-ansi": "^5.1.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "5.2.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-5.2.0.tgz",
+          "integrity": "sha512-DuRs1gKbBqsMKIZlrffwlug8MHkcnpjs5VPmL1PAh+mA30U0DTotfDZ0d2UUsXpPmPmMMJ6W773MaA3J+lbiWA==",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^4.1.0"
+          }
+        }
      }
    },
    "test-exclude": {
@ -4130,9 +4326,9 @@
      }
    },
    "ts-node": {
-      "version": "8.0.2",
-      "resolved": "https://registry.npmjs.org/ts-node/-/ts-node-8.0.2.tgz",
-      "integrity": "sha512-MosTrinKmaAcWgO8tqMjMJB22h+sp3Rd1i4fdoWY4mhBDekOwIAKI/bzmRi7IcbCmjquccYg2gcF6NBkLgr0Tw==",
+      "version": "8.1.0",
+      "resolved": "https://registry.npmjs.org/ts-node/-/ts-node-8.1.0.tgz",
+      "integrity": "sha512-34jpuOrxDuf+O6iW1JpgTRDFynUZ1iEqtYruBqh35gICNjN8x+LpVcPAcwzLPi9VU6mdA3ym+x233nZmZp445A==",
      "dev": true,
      "requires": {
        "arg": "^4.1.0",
@ -4148,6 +4344,15 @@
      "integrity": "sha512-4krF8scpejhaOgqzBEcGM7yDIEfi0/8+8zDRZhNZZ2kjmHJ4hv3zCbQWxoJGz1iw5U0Jl0nma13xzHXcncMavQ==",
      "dev": true
    },
+    "tsutils": {
+      "version": "3.10.0",
+      "resolved": "https://registry.npmjs.org/tsutils/-/tsutils-3.10.0.tgz",
+      "integrity": "sha512-q20XSMq7jutbGB8luhKKsQldRKWvyBO2BGqni3p4yq8Ys9bEP/xQw3KepKmMRt9gJ4lvQSScrihJrcKdKoSU7Q==",
+      "dev": true,
+      "requires": {
+        "tslib": "^1.8.1"
+      }
+    },
    "tunnel-agent": {
      "version": "0.6.0",
      "resolved": "https://registry.npmjs.org/tunnel-agent/-/tunnel-agent-0.6.0.tgz",
@ -4179,9 +4384,9 @@
      "dev": true
    },
    "typescript": {
-      "version": "3.2.4",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.2.4.tgz",
-      "integrity": "sha512-0RNDbSdEokBeEAkgNbxJ+BLwSManFy9TeXz8uW+48j/xhEXv1ePME60olyzw2XzUqUBNAYFeJadIqAgNqIACwg==",
+      "version": "3.4.5",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.4.5.tgz",
+      "integrity": "sha512-YycBxUb49UUhdNMU5aJ7z5Ej2XGmaIBL0x34vZ82fn3hGvD+bgrMrVDpatgz2f7YxUMJxMkbWxJZeAvDxVe7Vw==",
      "dev": true
    },
    "uglify-js": {
@ -4467,9 +4672,9 @@
      "dev": true
    },
    "write": {
-      "version": "0.2.1",
-      "resolved": "https://registry.npmjs.org/write/-/write-0.2.1.tgz",
-      "integrity": "sha1-X8A4KOJkzqP+kUVUdvejxWbLB1c=",
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/write/-/write-1.0.3.tgz",
+      "integrity": "sha512-/lg70HAjtkUgWPVZhZcm+T4hkL8Zbtp1nFNOn3lRrxnlv50SRBv7cR7RqR+GMsd3hUXy9hWBo4CHTbFTcOYwig==",
      "dev": true,
      "requires": {
        "mkdirp": "^0.5.1"
@ -4616,9 +4821,9 @@
      }
    },
    "yn": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/yn/-/yn-3.0.0.tgz",
-      "integrity": "sha512-+Wo/p5VRfxUgBUGy2j/6KX2mj9AYJWOHuhMjMcbBFc3y54o9/4buK1ksBvuiK01C3kby8DH9lSmJdSxw+4G/2Q==",
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/yn/-/yn-3.1.0.tgz",
+      "integrity": "sha512-kKfnnYkbTfrAdd0xICNFw7Atm8nKpLcLv9AZGEt+kczL/WQVai4e2V6ZN8U/O+iI6WrNuJjNNOyu4zfhl9D3Hg==",
      "dev": true
    },
    "yootils": {
--- a/package.json
+++ b/package.json
@ -1,98 +1,101 @@
 {
-  "name": "svelte",
-  "version": "3.4.1",
-  "description": "Cybernetically enhanced web apps",
-  "module": "index.mjs",
-  "main": "index",
-  "files": [
-    "compiler.js",
-    "register.js",
-    "index.*",
-    "internal.*",
-    "store.*",
-    "animate.*",
-    "transition.*",
-    "easing.*",
-    "motion.*",
-    "svelte",
-    "README.md"
-  ],
-  "scripts": {
-    "test": "mocha --opts mocha.opts",
-    "test:unit": "mocha --require sucrase/register --recursive ./**/__test__.ts",
-    "quicktest": "mocha --opts mocha.opts",
-    "precoverage": "c8 mocha --opts mocha.coverage.opts",
-    "coverage": "c8 report --reporter=text-lcov > coverage.lcov && c8 report --reporter=html",
-    "codecov": "codecov",
-    "precodecov": "npm run coverage",
-    "lint": "eslint src test/*.js",
-    "build": "rollup -c",
-    "prepare": "npm run build && npm run tsd",
-    "dev": "rollup -cw",
-    "pretest": "npm run build",
-    "posttest": "agadoo src/internal/index.js",
-    "prepublishOnly": "export PUBLISH=true && npm run lint && npm test",
-    "tsd": "tsc -d src/store.ts --outDir ."
-  },
-  "repository": {
-    "type": "git",
-    "url": "https://github.com/sveltejs/svelte.git"
-  },
-  "keywords": [
-    "UI",
-    "framework",
-    "templates",
-    "templating"
-  ],
-  "author": "Rich Harris",
-  "license": "MIT",
-  "bugs": {
-    "url": "https://github.com/sveltejs/svelte/issues"
-  },
-  "homepage": "https://github.com/sveltejs/svelte#README",
-  "devDependencies": {
-    "@sveltejs/svelte-repl": "0.0.5",
-    "@types/mocha": "^5.2.0",
-    "@types/node": "^10.5.5",
-    "acorn": "^6.1.1",
-    "acorn-dynamic-import": "^4.0.0",
-    "agadoo": "^1.0.1",
-    "c8": "^3.4.0",
-    "codecov": "^3.0.0",
-    "css-tree": "1.0.0-alpha22",
-    "eslint": "^5.3.0",
-    "eslint-plugin-html": "^5.0.0",
-    "eslint-plugin-import": "^2.11.0",
-    "estree-walker": "^0.6.0",
-    "is-reference": "^1.1.1",
-    "jsdom": "^12.2.0",
-    "kleur": "^3.0.0",
-    "locate-character": "^2.0.5",
-    "magic-string": "^0.25.2",
-    "mocha": "^5.2.0",
-    "puppeteer": "^1.13.0",
-    "rollup": "^1.1.2",
-    "rollup-plugin-commonjs": "^9.1.0",
-    "rollup-plugin-json": "^3.0.0",
-    "rollup-plugin-node-resolve": "^4.0.0",
-    "rollup-plugin-replace": "^2.0.0",
-    "rollup-plugin-sucrase": "^2.1.0",
-    "rollup-plugin-typescript": "^1.0.0",
-    "rollup-plugin-virtual": "^1.0.1",
-    "source-map": "0.6",
-    "source-map-support": "^0.5.4",
-    "tiny-glob": "^0.2.1",
-    "ts-node": "^8.0.2",
-    "tslib": "^1.8.0",
-    "typescript": "^3.0.1"
-  },
-  "nyc": {
-    "include": [
-      "compiler/svelte.js",
-      "shared.js"
-    ],
-    "sourceMap": true,
-    "instrument": true
-  },
-  "dependencies": {}
+	"name": "svelte",
+	"version": "3.4.1",
+	"description": "Cybernetically enhanced web apps",
+	"module": "index.mjs",
+	"main": "index",
+	"files": [
+		"compiler.js",
+		"register.js",
+		"index.*",
+		"internal.*",
+		"store.*",
+		"animate.*",
+		"transition.*",
+		"easing.*",
+		"motion.*",
+		"svelte",
+		"README.md"
+	],
+	"scripts": {
+		"test": "mocha --opts mocha.opts",
+		"test:unit": "mocha --require sucrase/register --recursive ./**/__test__.ts",
+		"quicktest": "mocha --opts mocha.opts",
+		"precoverage": "c8 mocha --opts mocha.coverage.opts",
+		"coverage": "c8 report --reporter=text-lcov > coverage.lcov && c8 report --reporter=html",
+		"codecov": "codecov",
+		"precodecov": "npm run coverage",
+		"lint": "eslint --ext .js --ext .ts src test/*.js",
+		"typecheck": "tsc --noEmit",
+		"build": "rollup -c",
+		"prepare": "npm run build && npm run tsd",
+		"dev": "rollup -cw",
+		"pretest": "npm run build",
+		"posttest": "agadoo src/internal/index.js",
+		"prepublishOnly": "export PUBLISH=true && npm run lint && npm test",
+		"tsd": "tsc -d src/store.ts --outDir ."
+	},
+	"repository": {
+		"type": "git",
+		"url": "https://github.com/sveltejs/svelte.git"
+	},
+	"keywords": [
+		"UI",
+		"framework",
+		"templates",
+		"templating"
+	],
+	"author": "Rich Harris",
+	"license": "MIT",
+	"bugs": {
+		"url": "https://github.com/sveltejs/svelte/issues"
+	},
+	"homepage": "https://github.com/sveltejs/svelte#README",
+	"devDependencies": {
+		"@sveltejs/svelte-repl": "0.0.5",
+		"@types/mocha": "^5.2.0",
+		"@types/node": "^8",
+		"@typescript-eslint/eslint-plugin": "^1.9.0",
+		"@typescript-eslint/parser": "^1.9.0",
+		"acorn": "^6.1.1",
+		"acorn-dynamic-import": "^4.0.0",
+		"agadoo": "^1.0.1",
+		"c8": "^3.4.0",
+		"codecov": "^3.0.0",
+		"css-tree": "1.0.0-alpha22",
+		"eslint": "^5.16.0",
+		"eslint-plugin-html": "^5.0.5",
+		"eslint-plugin-import": "^2.17.2",
+		"estree-walker": "^0.6.0",
+		"is-reference": "^1.1.1",
+		"jsdom": "^12.2.0",
+		"kleur": "^3.0.0",
+		"locate-character": "^2.0.5",
+		"magic-string": "^0.25.2",
+		"mocha": "^5.2.0",
+		"puppeteer": "^1.13.0",
+		"rollup": "^1.1.2",
+		"rollup-plugin-commonjs": "^9.1.0",
+		"rollup-plugin-json": "^3.0.0",
+		"rollup-plugin-node-resolve": "^4.0.0",
+		"rollup-plugin-replace": "^2.0.0",
+		"rollup-plugin-sucrase": "^2.1.0",
+		"rollup-plugin-typescript": "^1.0.0",
+		"rollup-plugin-virtual": "^1.0.1",
+		"source-map": "0.6",
+		"source-map-support": "^0.5.4",
+		"tiny-glob": "^0.2.1",
+		"ts-node": "^8.1.0",
+		"tslib": "^1.9.3",
+		"typescript": "^3.4.5"
+	},
+	"nyc": {
+		"include": [
+			"compiler/svelte.js",
+			"shared.js"
+		],
+		"sourceMap": true,
+		"instrument": true
+	},
+	"dependencies": {}
 }
--- a/tsconfig.json
+++ b/tsconfig.json
@ -1,18 +1,42 @@
 {
-    "compilerOptions": {
-        "target": "ES6",
-        "diagnostics": true,
-        "noImplicitThis": true,
-        "noEmitOnError": true,
-        "allowJs": true,
-        "lib": ["es5", "es6", "dom"],
-        "importHelpers": true,
-        "moduleResolution": "node"
-    },
-    "include": [
-        "src"
-    ],
-    "exclude": [
-        "node_modules"
-    ]
-}
+	"include": ["src"],
+	"exclude": ["node_modules"],
+
+	"compilerOptions": {
+		// target node 8+ and browsers
+		// see https://node.green/
+		// the only missing feature is Array.prototype.values
+		"target": "es2017",
+		"lib": ["es2017", "dom"],
+
+		// rollup and plugins deal with modules
+		"module": "esnext",
+		"moduleResolution": "node",
+		"resolveJsonModule": true,
+
+		// typechecking
+		"noImplicitThis": true,
+		"allowSyntheticDefaultImports": true, // rollup deals with this
+
+		// TODO: error all the things
+		//"strict": true,
+		//"noUnusedLocals": true,
+		//"noUnusedParameters": true,
+
+		// reporting
+		"diagnostics": true,
+		"noEmitOnError": true,
+		"noErrorTruncation": true,
+
+		// TODO: migrate everything to typescript
+		"allowJs": true,
+		"checkJs": true,
+
+		// resolve `import { thing } from 'svelte'`
+		// again, rollup deals with this
+		"baseUrl": "src",
+		"paths": {
+			"svelte/": ["./*"]
+		}
+	}
+}