diff --git a/.gitignore b/.gitignore
index 228136cbc8..ee1daa2c03 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,8 +16,6 @@ node_modules
 /transition
 /animate
 /scratch/
-/coverage/
-/coverage.lcov
 /test/*/samples/_
 /yarn-error.log
 _actual*.*
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4df49ecc77..4bdb6f3964 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,10 @@
 # Svelte changelog
 
-## Unreleased
+## 3.46.3
 
 * Ignore whitespace in `{#each}` blocks when containing elements with `animate:` ([#5477](https://github.com/sveltejs/svelte/pull/5477))
+* Throw compiler error when variable in `context="instance"` collides with import in `context="module"` ([#7090](https://github.com/sveltejs/svelte/issues/7090))
+* Fix compiler crash when `{@const}` contains arrow functions ([#7134](https://github.com/sveltejs/svelte/issues/7134))
 
 ## 3.46.2
 
diff --git a/CODE_OF_CONDUCT.md b/CODE_OF_CONDUCT.md
new file mode 100644
index 0000000000..65d86fe76a
--- /dev/null
+++ b/CODE_OF_CONDUCT.md
@@ -0,0 +1,3 @@
+This repository is governed by the Svelte Code of Conduct.
+
+https://github.com/sveltejs/community/blob/main/CODE_OF_CONDUCT.md
diff --git a/package-lock.json b/package-lock.json
index 8bddba41a1..40ee10e6aa 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "svelte",
-  "version": "3.46.2",
+  "version": "3.46.3",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "svelte",
-      "version": "3.46.2",
+      "version": "3.46.3",
       "license": "MIT",
       "devDependencies": {
         "@ampproject/remapping": "^0.3.0",
@@ -24,9 +24,7 @@
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         "agadoo": "^1.1.0",
-        "c8": "^5.0.1",
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-        "codecov": "^3.5.0",
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         "eslint": "^7.32.0",
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@@ -97,12 +95,6 @@
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-      "resolved": "https://registry.npmjs.org/@bcoe/v8-coverage/-/v8-coverage-0.2.1.tgz",
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-      "dev": true
-    },
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       "resolved": "https://registry.npmjs.org/@eslint/eslintrc/-/eslintrc-0.4.3.tgz",
@@ -329,33 +321,12 @@
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       "dev": true
     },
-    "node_modules/@tootallnate/once": {
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-      "resolved": "https://registry.npmjs.org/@tootallnate/once/-/once-1.0.0.tgz",
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-      "dev": true,
-      "engines": {
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-      }
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       "dev": true
     },
-    "node_modules/@types/is-windows": {
-      "version": "0.2.0",
-      "resolved": "https://registry.npmjs.org/@types/is-windows/-/is-windows-0.2.0.tgz",
-      "integrity": "sha1-byTuSHMdMRaOpRBhDW3RXl/Jxv8=",
-      "dev": true
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-      "resolved": "https://registry.npmjs.org/@types/istanbul-lib-coverage/-/istanbul-lib-coverage-2.0.1.tgz",
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-      "dev": true
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       "resolved": "https://registry.npmjs.org/@types/json-schema/-/json-schema-7.0.9.tgz",
@@ -767,15 +738,6 @@
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-      "integrity": "sha1-7L0W+JSbFXGDcRsb2jNPN4QBhas=",
-      "dev": true,
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@@ -960,32 +922,6 @@
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-      "dev": true,
-      "dependencies": {
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-        "find-up": "^3.0.0",
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-        "istanbul-lib-report": "^2.0.1",
-        "istanbul-reports": "^2.2.4",
-        "rimraf": "^2.6.2",
-        "test-exclude": "^5.0.0",
-        "v8-to-istanbul": "^3.1.3",
-        "yargs": "^13.1.0",
-        "yargs-parser": "^10.1.0"
-      },
-      "bin": {
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-      },
-      "engines": {
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@@ -1095,25 +1031,6 @@
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-      "resolved": "https://registry.npmjs.org/codecov/-/codecov-3.6.5.tgz",
-      "integrity": "sha512-v48WuDMUug6JXwmmfsMzhCHRnhUf8O3duqXvltaYJKrO1OekZWpB/eH6iIoaxMl8Qli0+u3OxptdsBOYiD7VAQ==",
-      "dev": true,
-      "dependencies": {
-        "argv": "0.0.2",
-        "ignore-walk": "3.0.3",
-        "js-yaml": "3.13.1",
-        "teeny-request": "6.0.1",
-        "urlgrey": "0.4.4"
-      },
-      "bin": {
-        "codecov": "bin/codecov"
-      },
-      "engines": {
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     "node_modules/color-convert": {
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@@ -1171,31 +1088,12 @@
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-      "dev": true,
-      "dependencies": {
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-      "integrity": "sha1-e5JHYhwjrf3ThWAEqCPL45dCTUE=",
-      "dev": true,
-      "dependencies": {
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-      }
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@@ -2362,16 +2260,6 @@
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@@ -2428,16 +2316,6 @@
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@@ -2692,38 +2570,6 @@
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-      "dev": true,
-      "dependencies": {
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-        "agent-base": "6",
-        "debug": "4"
-      },
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@@ -2773,15 +2619,6 @@
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-      "integrity": "sha512-LS9X+dc8KLxXCb8dni79fLIIUA5VyZoyjSMCwTluaXA0o27cCK0bhXkpgw+sTXVpPy/lSO57ilRixqk0vDmtRA==",
-      "dev": true,
-      "requires": {
-        "pify": "^4.0.1",
-        "semver": "^5.6.0"
-      }
-    },
     "mdn-data": {
       "version": "2.0.14",
       "resolved": "https://registry.npmjs.org/mdn-data/-/mdn-data-2.0.14.tgz",
@@ -8399,12 +7836,6 @@
         "semver": "^5.7.0"
       }
     },
-    "node-fetch": {
-      "version": "2.6.1",
-      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.1.tgz",
-      "integrity": "sha512-V4aYg89jEoVRxRb2fJdAg8FHvI7cEyYdVAh94HH0UIK8oJxUfkjlDQN9RbMx+bEjP7+ggMiFRprSti032Oipxw==",
-      "dev": true
-    },
     "node-modules-regexp": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/node-modules-regexp/-/node-modules-regexp-1.0.0.tgz",
@@ -8628,12 +8059,6 @@
       "integrity": "sha512-lY1Q/PiJGC2zOv/z391WOTD+Z02bCgsFfvxoXXf6h7kv9o+WmsmzYqrAwY63sNgOxE4xEdq0WyUnXfKeBrSvYw==",
       "dev": true
     },
-    "pify": {
-      "version": "4.0.1",
-      "resolved": "https://registry.npmjs.org/pify/-/pify-4.0.1.tgz",
-      "integrity": "sha512-uB80kBFb/tfd68bVleG9T5GGsGPjJrLAUpR5PZIrhBnIaRTQRjqdJSsIKkOP6OAIFbj7GOrcudc5pNjZ+geV2g==",
-      "dev": true
-    },
     "pirates": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/pirates/-/pirates-4.0.1.tgz",
@@ -8781,12 +8206,6 @@
       "integrity": "sha512-D+zkORCbA9f1tdWRK0RaCR3GPv50cMxcrz4X8k5LTSUD1Dkw47mKJEZQNunItRTkWwgtaUSo1RVFRIG9ZXiFYg==",
       "dev": true
     },
-    "pseudomap": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/pseudomap/-/pseudomap-1.0.2.tgz",
-      "integrity": "sha1-8FKijacOYYkX7wqKw0wa5aaChrM=",
-      "dev": true
-    },
     "psl": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/psl/-/psl-1.3.0.tgz",
@@ -8857,16 +8276,6 @@
         "path-type": "^3.0.0"
       }
     },
-    "read-pkg-up": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/read-pkg-up/-/read-pkg-up-4.0.0.tgz",
-      "integrity": "sha512-6etQSH7nJGsK0RbG/2TeDzZFa8shjQ1um+SwQQ5cwKy0dhSXdOncEhb1CPpvQG4h7FyOV6EB6YlV0yJvZQNAkA==",
-      "dev": true,
-      "requires": {
-        "find-up": "^3.0.0",
-        "read-pkg": "^3.0.0"
-      }
-    },
     "readable-stream": {
       "version": "2.3.7",
       "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.7.tgz",
@@ -9119,12 +8528,6 @@
         "object-inspect": "^1.9.0"
       }
     },
-    "signal-exit": {
-      "version": "3.0.2",
-      "resolved": "https://registry.npmjs.org/signal-exit/-/signal-exit-3.0.2.tgz",
-      "integrity": "sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0=",
-      "dev": true
-    },
     "slash": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/slash/-/slash-3.0.0.tgz",
@@ -9265,15 +8668,6 @@
       "integrity": "sha1-NbCYdbT/SfJqd35QmzCQoyJr8ks=",
       "dev": true
     },
-    "stream-events": {
-      "version": "1.0.5",
-      "resolved": "https://registry.npmjs.org/stream-events/-/stream-events-1.0.5.tgz",
-      "integrity": "sha512-E1GUzBSgvct8Jsb3v2X15pjzN1tYebtbLaMg+eBOUOAxgbLoSbT2NS91ckc5lJD1KfLjId+jXJRgo0qnV5Nerg==",
-      "dev": true,
-      "requires": {
-        "stubs": "^3.0.0"
-      }
-    },
     "string_decoder": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
@@ -9325,12 +8719,6 @@
       "integrity": "sha512-6fPc+R4ihwqP6N/aIv2f1gMH8lOVtWQHoqC4yK6oSDVVocumAsfCqjkXnqiYMhmMwS/mEHLp7Vehlt3ql6lEig==",
       "dev": true
     },
-    "stubs": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/stubs/-/stubs-3.0.0.tgz",
-      "integrity": "sha1-6NK6H6nJBXAwPAMLaQD31fiavls=",
-      "dev": true
-    },
     "sucrase": {
       "version": "3.16.0",
       "resolved": "https://registry.npmjs.org/sucrase/-/sucrase-3.16.0.tgz",
@@ -9361,15 +8749,6 @@
         }
       }
     },
-    "supports-color": {
-      "version": "6.1.0",
-      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-6.1.0.tgz",
-      "integrity": "sha512-qe1jfm1Mg7Nq/NSh6XE24gPXROEVsWHxC1LIx//XNlD9iw7YZQGjZNjYN7xGaEG6iKdA8EtNFW6R0gjnVXp+wQ==",
-      "dev": true,
-      "requires": {
-        "has-flag": "^3.0.0"
-      }
-    },
     "svelte": {
       "version": "3.43.0",
       "resolved": "https://registry.npmjs.org/svelte/-/svelte-3.43.0.tgz",
@@ -9461,31 +8840,6 @@
         }
       }
     },
-    "teeny-request": {
-      "version": "6.0.1",
-      "resolved": "https://registry.npmjs.org/teeny-request/-/teeny-request-6.0.1.tgz",
-      "integrity": "sha512-TAK0c9a00ELOqLrZ49cFxvPVogMUFaWY8dUsQc/0CuQPGF+BOxOQzXfE413BAk2kLomwNplvdtMpeaeGWmoc2g==",
-      "dev": true,
-      "requires": {
-        "http-proxy-agent": "^4.0.0",
-        "https-proxy-agent": "^4.0.0",
-        "node-fetch": "^2.2.0",
-        "stream-events": "^1.0.5",
-        "uuid": "^3.3.2"
-      }
-    },
-    "test-exclude": {
-      "version": "5.2.3",
-      "resolved": "https://registry.npmjs.org/test-exclude/-/test-exclude-5.2.3.tgz",
-      "integrity": "sha512-M+oxtseCFO3EDtAaGH7iiej3CBkzXqFMbzqYAACdzKui4eZA+pq3tZEwChvOdNfa7xxy8BfbmgJSIr43cC/+2g==",
-      "dev": true,
-      "requires": {
-        "glob": "^7.1.3",
-        "minimatch": "^3.0.4",
-        "read-pkg-up": "^4.0.0",
-        "require-main-filename": "^2.0.0"
-      }
-    },
     "text-table": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/text-table/-/text-table-0.2.0.tgz",
@@ -9653,12 +9007,6 @@
         "punycode": "^2.1.0"
       }
     },
-    "urlgrey": {
-      "version": "0.4.4",
-      "resolved": "https://registry.npmjs.org/urlgrey/-/urlgrey-0.4.4.tgz",
-      "integrity": "sha1-iS/pWWCAXoVRnxzUOJ8stMu3ZS8=",
-      "dev": true
-    },
     "util-deprecate": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
@@ -9677,17 +9025,6 @@
       "integrity": "sha512-gTpR5XQNKFwOd4clxfnhaqvfqMpqEwr4tOtCyz4MtYZX2JYhfr1JvBFKdS+7K/9rfpZR3VLX+YWBbKoxCgS43Q==",
       "dev": true
     },
-    "v8-to-istanbul": {
-      "version": "3.2.3",
-      "resolved": "https://registry.npmjs.org/v8-to-istanbul/-/v8-to-istanbul-3.2.3.tgz",
-      "integrity": "sha512-B8d/oxMtc/x0TYXr9b+Ywu5KexA/on4QMQ9M1kTYnoGZzKdo8LLk9ySlWePdDOtr2G0/2Injgcp3sOR9gU+3vQ==",
-      "dev": true,
-      "requires": {
-        "@types/istanbul-lib-coverage": "^2.0.1",
-        "convert-source-map": "^1.6.0",
-        "source-map": "^0.7.3"
-      }
-    },
     "validate-npm-package-license": {
       "version": "3.0.4",
       "resolved": "https://registry.npmjs.org/validate-npm-package-license/-/validate-npm-package-license-3.0.4.tgz",
@@ -9878,12 +9215,6 @@
       "integrity": "sha512-wNcy4NvjMYL8gogWWYAO7ZFWFfHcbdbE57tZO8e4cbpj8tfUcwrwqSl3ad8HxpYWCdXcJUCeKKZS62Av1affwQ==",
       "dev": true
     },
-    "yallist": {
-      "version": "2.1.2",
-      "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.1.2.tgz",
-      "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=",
-      "dev": true
-    },
     "yargs": {
       "version": "13.3.2",
       "resolved": "https://registry.npmjs.org/yargs/-/yargs-13.3.2.tgz",
@@ -9914,23 +9245,6 @@
         }
       }
     },
-    "yargs-parser": {
-      "version": "10.1.0",
-      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-10.1.0.tgz",
-      "integrity": "sha512-VCIyR1wJoEBZUqk5PA+oOBF6ypbwh5aNB3I50guxAL/quggdfs4TtNHQrSazFA3fYZ+tEqfs0zIGlv0c/rgjbQ==",
-      "dev": true,
-      "requires": {
-        "camelcase": "^4.1.0"
-      },
-      "dependencies": {
-        "camelcase": {
-          "version": "4.1.0",
-          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-4.1.0.tgz",
-          "integrity": "sha1-1UVjW+HjPFQmScaRc+Xeas+uNN0=",
-          "dev": true
-        }
-      }
-    },
     "yargs-unparser": {
       "version": "1.6.0",
       "resolved": "https://registry.npmjs.org/yargs-unparser/-/yargs-unparser-1.6.0.tgz",
diff --git a/package.json b/package.json
index dfba5a0a3f..a21e7a080e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "svelte",
-  "version": "3.46.2",
+  "version": "3.46.3",
   "description": "Cybernetically enhanced web apps",
   "module": "index.mjs",
   "main": "index",
@@ -86,10 +86,6 @@
     "test": "mocha --exit",
     "test:unit": "mocha --require sucrase/register --recursive src/**/__test__.ts --exit",
     "quicktest": "mocha",
-    "precoverage": "c8 mocha",
-    "coverage": "c8 report --reporter=text-lcov > coverage.lcov && c8 report --reporter=html",
-    "codecov": "codecov",
-    "precodecov": "npm run coverage",
     "build": "rollup -c && npm run tsd",
     "prepare": "npm run build",
     "dev": "rollup -cw",
@@ -131,9 +127,7 @@
     "@typescript-eslint/parser": "^4.31.2",
     "acorn": "^8.4.1",
     "agadoo": "^1.1.0",
-    "c8": "^5.0.1",
     "code-red": "^0.2.4",
-    "codecov": "^3.5.0",
     "css-tree": "^1.1.2",
     "eslint": "^7.32.0",
     "eslint-plugin-import": "^2.24.2",
diff --git a/site/content/docs/05-accessibility-warnings.md b/site/content/docs/05-accessibility-warnings.md
index 149603dcf9..b39b06f9ff 100644
--- a/site/content/docs/05-accessibility-warnings.md
+++ b/site/content/docs/05-accessibility-warnings.md
@@ -213,6 +213,20 @@ Enforce that `on:mouseover` and `on:mouseout` are accompanied by `on:focus` and
 
 ---
 
+### `a11y-no-redundant-roles`
+
+Some HTML elements have default ARIA roles. Giving these elements an ARIA role that is already set by the browser [has no effect](https://www.w3.org/TR/using-aria/#aria-does-nothing) and is redundant.
+
+```sv
+<!-- A11y: Redundant role 'button' -->
+<button role="button" />
+
+<!-- A11y: Redundant role 'img' -->
+<img role="img" src="foo.jpg" />
+```
+
+---
+
 ### `a11y-positive-tabindex`
 
 Avoid positive `tabindex` property values. This will move elements out of the expected tab order, creating a confusing experience for keyboard users.
diff --git a/site/content/examples/07-stores/00-writable-stores/App.svelte b/site/content/examples/07-stores/00-writable-stores/App.svelte
index ee542f789d..61e55401a5 100644
--- a/site/content/examples/07-stores/00-writable-stores/App.svelte
+++ b/site/content/examples/07-stores/00-writable-stores/App.svelte
@@ -4,14 +4,14 @@
 	import Decrementer from './Decrementer.svelte';
 	import Resetter from './Resetter.svelte';
 
-	let count_value;
+	let countValue;
 
 	const unsubscribe = count.subscribe(value => {
-		count_value = value;
+		countValue = value;
 	});
 </script>
 
-<h1>The count is {count_value}</h1>
+<h1>The count is {countValue}</h1>
 
 <Incrementer/>
 <Decrementer/>
diff --git a/site/content/examples/17-special-elements/03-svelte-window-bindings/App.svelte b/site/content/examples/17-special-elements/03-svelte-window-bindings/App.svelte
index 28831a6d31..15c2aa0ebc 100644
--- a/site/content/examples/17-special-elements/03-svelte-window-bindings/App.svelte
+++ b/site/content/examples/17-special-elements/03-svelte-window-bindings/App.svelte
@@ -7,7 +7,7 @@
 <svelte:window bind:scrollY={y}/>
 
 <a class="parallax-container" href="https://www.firewatchgame.com">
-	{#each [0, 1, 2, 3, 4, 5, 6, 7, 8] as layer}
+	{#each layers as layer}
 		<img
 			style="transform: translate(0,{-y * layer / (layers.length - 1)}px)"
 			src="https://www.firewatchgame.com/images/parallax/parallax{layer}.png"
@@ -85,4 +85,4 @@
 		padding: 0;
 		background-color: rgb(253, 174, 51);
 	}
-</style>
\ No newline at end of file
+</style>
diff --git a/site/content/tutorial/08-stores/01-writable-stores/app-a/App.svelte b/site/content/tutorial/08-stores/01-writable-stores/app-a/App.svelte
index f2a4023f25..481b3070dc 100644
--- a/site/content/tutorial/08-stores/01-writable-stores/app-a/App.svelte
+++ b/site/content/tutorial/08-stores/01-writable-stores/app-a/App.svelte
@@ -4,14 +4,14 @@
 	import Decrementer from './Decrementer.svelte';
 	import Resetter from './Resetter.svelte';
 
-	let count_value;
+	let countValue;
 
 	count.subscribe(value => {
-		count_value = value;
+		countValue = value;
 	});
 </script>
 
-<h1>The count is {count_value}</h1>
+<h1>The count is {countValue}</h1>
 
 <Incrementer/>
 <Decrementer/>
diff --git a/site/content/tutorial/08-stores/01-writable-stores/app-b/App.svelte b/site/content/tutorial/08-stores/01-writable-stores/app-b/App.svelte
index c77563e354..57bbde1c1e 100644
--- a/site/content/tutorial/08-stores/01-writable-stores/app-b/App.svelte
+++ b/site/content/tutorial/08-stores/01-writable-stores/app-b/App.svelte
@@ -4,14 +4,14 @@
 	import Decrementer from './Decrementer.svelte';
 	import Resetter from './Resetter.svelte';
 
-	let count_value;
+	let countValue;
 
 	count.subscribe(value => {
-		count_value = value;
+		countValue = value;
 	});
 </script>
 
-<h1>The count is {count_value}</h1>
+<h1>The count is {countValue}</h1>
 
 <Incrementer/>
 <Decrementer/>
diff --git a/site/content/tutorial/08-stores/01-writable-stores/text.md b/site/content/tutorial/08-stores/01-writable-stores/text.md
index 247ef86e8d..dc7081f46a 100644
--- a/site/content/tutorial/08-stores/01-writable-stores/text.md
+++ b/site/content/tutorial/08-stores/01-writable-stores/text.md
@@ -4,7 +4,7 @@ title: Writable stores
 
 Not all application state belongs inside your application's component hierarchy. Sometimes, you'll have values that need to be accessed by multiple unrelated components, or by a regular JavaScript module.
 
-In Svelte, we do this with *stores*. A store is simply an object with a `subscribe` method that allows interested parties to be notified whenever the store value changes. In `App.svelte`, `count` is a store, and we're setting `count_value` in the `count.subscribe` callback.
+In Svelte, we do this with *stores*. A store is simply an object with a `subscribe` method that allows interested parties to be notified whenever the store value changes. In `App.svelte`, `count` is a store, and we're setting `countValue` in the `count.subscribe` callback.
 
 Click the `stores.js` tab to see the definition of `count`. It's a *writable* store, which means it has `set` and `update` methods in addition to `subscribe`.
 
diff --git a/site/content/tutorial/08-stores/02-auto-subscriptions/app-a/App.svelte b/site/content/tutorial/08-stores/02-auto-subscriptions/app-a/App.svelte
index f2a4023f25..481b3070dc 100644
--- a/site/content/tutorial/08-stores/02-auto-subscriptions/app-a/App.svelte
+++ b/site/content/tutorial/08-stores/02-auto-subscriptions/app-a/App.svelte
@@ -4,14 +4,14 @@
 	import Decrementer from './Decrementer.svelte';
 	import Resetter from './Resetter.svelte';
 
-	let count_value;
+	let countValue;
 
 	count.subscribe(value => {
-		count_value = value;
+		countValue = value;
 	});
 </script>
 
-<h1>The count is {count_value}</h1>
+<h1>The count is {countValue}</h1>
 
 <Incrementer/>
 <Decrementer/>
diff --git a/site/content/tutorial/08-stores/02-auto-subscriptions/text.md b/site/content/tutorial/08-stores/02-auto-subscriptions/text.md
index fc7967f658..2bed4a67d1 100644
--- a/site/content/tutorial/08-stores/02-auto-subscriptions/text.md
+++ b/site/content/tutorial/08-stores/02-auto-subscriptions/text.md
@@ -8,7 +8,7 @@ Start by declaring `unsubscribe` in `App.svelte`:
 
 ```js
 const unsubscribe = count.subscribe(value => {
-	count_value = value;
+	countValue = value;
 });
 ```
 > Calling a `subscribe` method returns an `unsubscribe` function.
@@ -23,16 +23,16 @@ You now declared `unsubscribe`, but it still needs to be called, for example thr
 	import Decrementer from './Decrementer.svelte';
 	import Resetter from './Resetter.svelte';
 
-	let count_value;
+	let countValue;
 
 	const unsubscribe = count.subscribe(value => {
-		count_value = value;
+		countValue = value;
 	});
 
 	onDestroy(unsubscribe);
 </script>
 
-<h1>The count is {count_value}</h1>
+<h1>The count is {countValue}</h1>
 ```
 
 It starts to get a bit boilerplatey though, especially if your component subscribes to multiple stores. Instead, Svelte has a trick up its sleeve — you can reference a store value by prefixing the store name with `$`:
diff --git a/src/compiler/compile/Component.ts b/src/compiler/compile/Component.ts
index 0347a28743..5f7d4b9758 100644
--- a/src/compiler/compile/Component.ts
+++ b/src/compiler/compile/Component.ts
@@ -191,27 +191,33 @@ export default class Component {
 		this.stylesheet.warn_on_unused_selectors(this);
 	}
 
-	add_var(variable: Var, add_to_lookup = true) {
+	add_var(node: Node, variable: Var, add_to_lookup = true) {
 		this.vars.push(variable);
 
 		if (add_to_lookup) {
+			if (this.var_lookup.has(variable.name)) {
+				const exists_var = this.var_lookup.get(variable.name);
+				if (exists_var.module && exists_var.imported) {
+					this.error(node as any, compiler_errors.illegal_variable_declaration);
+				}
+			}
 			this.var_lookup.set(variable.name, variable);
 		}
 	}
 
-	add_reference(name: string) {
+	add_reference(node: Node, name: string) {
 		const variable = this.var_lookup.get(name);
 
 		if (variable) {
 			variable.referenced = true;
 		} else if (is_reserved_keyword(name)) {
-			this.add_var({
+			this.add_var(node, {
 				name,
 				injected: true,
 				referenced: true
 			});
 		} else if (name[0] === '$') {
-			this.add_var({
+			this.add_var(node, {
 				name,
 				injected: true,
 				referenced: true,
@@ -228,7 +234,7 @@ export default class Component {
 			}
 		} else {
 			if (this.compile_options.varsReport === 'full') {
-				this.add_var({ name, referenced: true }, false);
+				this.add_var(node, { name, referenced: true }, false);
 			}
 
 			this.used_names.add(name);
@@ -599,12 +605,14 @@ export default class Component {
 			}
 
 			const writable = node.type === 'VariableDeclaration' && (node.kind === 'var' || node.kind === 'let');
+			const imported = node.type.startsWith('Import');
 
-			this.add_var({
+			this.add_var(node, {
 				name,
 				module: true,
 				hoistable: true,
-				writable
+				writable,
+				imported
 			});
 		});
 
@@ -612,7 +620,7 @@ export default class Component {
 			if (name[0] === '$') {
 				return this.error(node as any, compiler_errors.illegal_subscription);
 			} else {
-				this.add_var({
+				this.add_var(node, {
 					name,
 					global: true,
 					hoistable: true
@@ -674,7 +682,7 @@ export default class Component {
 			const writable = node.type === 'VariableDeclaration' && (node.kind === 'var' || node.kind === 'let');
 			const imported = node.type.startsWith('Import');
 
-			this.add_var({
+			this.add_var(node, {
 				name,
 				initialised: instance_scope.initialised_declarations.has(name),
 				writable,
@@ -697,7 +705,7 @@ export default class Component {
 			const node = globals.get(name);
 
 			if (this.injected_reactive_declaration_vars.has(name)) {
-				this.add_var({
+				this.add_var(node, {
 					name,
 					injected: true,
 					writable: true,
@@ -705,7 +713,7 @@ export default class Component {
 					initialised: true
 				});
 			} else if (is_reserved_keyword(name)) {
-				this.add_var({
+				this.add_var(node, {
 					name,
 					injected: true
 				});
@@ -714,14 +722,14 @@ export default class Component {
 					return this.error(node as any, compiler_errors.illegal_global(name));
 				}
 
-				this.add_var({
+				this.add_var(node, {
 					name,
 					injected: true,
 					mutated: true,
 					writable: true
 				});
 
-				this.add_reference(name.slice(1));
+				this.add_reference(node, name.slice(1));
 
 				const variable = this.var_lookup.get(name.slice(1));
 				if (variable) {
@@ -729,7 +737,7 @@ export default class Component {
 					variable.referenced_from_script = true;
 				}
 			} else {
-				this.add_var({
+				this.add_var(node, {
 					name,
 					global: true,
 					hoistable: true
diff --git a/src/compiler/compile/compiler_errors.ts b/src/compiler/compile/compiler_errors.ts
index f6e9d17ea3..c9282189f1 100644
--- a/src/compiler/compile/compiler_errors.ts
+++ b/src/compiler/compile/compiler_errors.ts
@@ -190,6 +190,10 @@ export default {
 		code: 'illegal-global',
 		message: `${name} is an illegal variable name`
 	}),
+	illegal_variable_declaration: {
+		code: 'illegal-variable-declaration',
+		message: 'Cannot declare same variable name which is imported inside <script context="module">'
+	},
 	cyclical_reactive_declaration: (cycle: string[]) => ({
 		code: 'cyclical-reactive-declaration',
 		message: `Cyclical dependency detected: ${cycle.join(' → ')}`
diff --git a/src/compiler/compile/nodes/Action.ts b/src/compiler/compile/nodes/Action.ts
index 347ea2fb30..f0d92f8537 100644
--- a/src/compiler/compile/nodes/Action.ts
+++ b/src/compiler/compile/nodes/Action.ts
@@ -18,7 +18,7 @@ export default class Action extends Node {
 		component.warn_if_undefined(object, info, scope);
 
 		this.name = info.name;
-		component.add_reference(object);
+		component.add_reference(this as any, object);
 
 		this.expression = info.expression
 			? new Expression(component, this, scope, info.expression)
diff --git a/src/compiler/compile/nodes/Animation.ts b/src/compiler/compile/nodes/Animation.ts
index ac9dddd275..507aa1df04 100644
--- a/src/compiler/compile/nodes/Animation.ts
+++ b/src/compiler/compile/nodes/Animation.ts
@@ -18,7 +18,7 @@ export default class Animation extends Node {
 		component.warn_if_undefined(info.name, info, scope);
 
 		this.name = info.name;
-		component.add_reference(info.name.split('.')[0]);
+		component.add_reference(this as any, info.name.split('.')[0]);
 
 		if (parent.animation) {
 			component.error(this, compiler_errors.duplicate_animation);
diff --git a/src/compiler/compile/nodes/InlineComponent.ts b/src/compiler/compile/nodes/InlineComponent.ts
index 9d88b136cd..e65bf445da 100644
--- a/src/compiler/compile/nodes/InlineComponent.ts
+++ b/src/compiler/compile/nodes/InlineComponent.ts
@@ -29,7 +29,7 @@ export default class InlineComponent extends Node {
 		if (info.name !== 'svelte:component' && info.name !== 'svelte:self') {
 			const name = info.name.split('.')[0]; // accommodate namespaces
 			component.warn_if_undefined(name, info, scope);
-			component.add_reference(name);
+			component.add_reference(this as any, name);
 		}
 
 		this.name = info.name;
@@ -141,10 +141,10 @@ export default class InlineComponent extends Node {
 		}
 
 		if (info.children.some(node => not_whitespace_text(node))) {
-			children.push({ 
+			children.push({
 				start: info.start,
 				end: info.end,
-				type: 'SlotTemplate', 
+				type: 'SlotTemplate',
 				name: 'svelte:fragment',
 				attributes: [],
 				children: info.children
diff --git a/src/compiler/compile/nodes/Transition.ts b/src/compiler/compile/nodes/Transition.ts
index 78799ac7a9..3a4c5a04a7 100644
--- a/src/compiler/compile/nodes/Transition.ts
+++ b/src/compiler/compile/nodes/Transition.ts
@@ -19,7 +19,7 @@ export default class Transition extends Node {
 		component.warn_if_undefined(info.name, info, scope);
 
 		this.name = info.name;
-		component.add_reference(info.name.split('.')[0]);
+		component.add_reference(this as any, info.name.split('.')[0]);
 
 		this.directive = info.intro && info.outro ? 'transition' : info.intro ? 'in' : 'out';
 		this.is_local = info.modifiers.includes('local');
diff --git a/src/compiler/compile/nodes/shared/Context.ts b/src/compiler/compile/nodes/shared/Context.ts
index 7507d1e37e..670f0531e6 100644
--- a/src/compiler/compile/nodes/shared/Context.ts
+++ b/src/compiler/compile/nodes/shared/Context.ts
@@ -187,7 +187,7 @@ function mark_referenced(
 			if (is_reference(node, parent)) {
 				const { name } = flatten_reference(node);
 				if (!scope.is_let(name) && !scope.names.has(name)) {
-					component.add_reference(name);
+					component.add_reference(node, name);
 				}
 			}
 		}
diff --git a/src/compiler/compile/nodes/shared/Expression.ts b/src/compiler/compile/nodes/shared/Expression.ts
index c54540f249..98fb2f1e3a 100644
--- a/src/compiler/compile/nodes/shared/Expression.ts
+++ b/src/compiler/compile/nodes/shared/Expression.ts
@@ -110,7 +110,7 @@ export default class Expression {
 							dependencies.add(name);
 						}
 
-						component.add_reference(name);
+						component.add_reference(node, name);
 						component.warn_if_undefined(name, nodes[0], template_scope);
 					}
 
@@ -144,7 +144,7 @@ export default class Expression {
 							const each_block = template_scope.get_owner(name);
 							(each_block as EachBlock).has_binding = true;
 						} else {
-							component.add_reference(name);
+							component.add_reference(node, name);
 
 							const variable = component.var_lookup.get(name);
 							if (variable) variable[deep ? 'mutated' : 'reassigned'] = true;
@@ -220,7 +220,7 @@ export default class Expression {
 							});
 						} else {
 							dependencies.add(name);
-							component.add_reference(name); // TODO is this redundant/misplaced?
+							component.add_reference(node, name); // TODO is this redundant/misplaced?
 						}
 					} else if (is_contextual(component, template_scope, name)) {
 						const reference = block.renderer.reference(node, ctx);
@@ -253,13 +253,21 @@ export default class Expression {
 
 					const declaration = b`const ${id} = ${node}`;
 
-					if (dependencies.size === 0 && contextual_dependencies.size === 0) {
+					if (owner.type === 'ConstTag') {
+						walk(node, {
+							enter(node: Node) {
+								if (node.type === 'Identifier') {
+									this.replace(block.renderer.reference(node, ctx));
+								}
+							}
+						});
+					} else if (dependencies.size === 0 && contextual_dependencies.size === 0) {
 						// we can hoist this out of the component completely
 						component.fully_hoisted.push(declaration);
 
 						this.replace(id as any);
 
-						component.add_var({
+						component.add_var(node, {
 							name: id.name,
 							internal: true,
 							hoistable: true,
diff --git a/src/compiler/compile/render_dom/Renderer.ts b/src/compiler/compile/render_dom/Renderer.ts
index c585cb3f72..179fc0c956 100644
--- a/src/compiler/compile/render_dom/Renderer.ts
+++ b/src/compiler/compile/render_dom/Renderer.ts
@@ -264,7 +264,7 @@ export default class Renderer {
 
 		// TODO is this correct?
 		if (this.component.var_lookup.get(name)) {
-			this.component.add_reference(name);
+			this.component.add_reference(node, name);
 		}
 
 		if (member !== undefined) {
diff --git a/test/runtime/samples/const-tag-each-arrow/_config.js b/test/runtime/samples/const-tag-each-arrow/_config.js
new file mode 100644
index 0000000000..8e8036b851
--- /dev/null
+++ b/test/runtime/samples/const-tag-each-arrow/_config.js
@@ -0,0 +1,47 @@
+export default {
+	html: `
+			<p>#FF0000</p>
+			<p>#00FF00</p>
+			<p>#0000FF</p>
+	`,
+	async test({ component, target, assert }) {
+		component.constant = 20;
+
+		assert.htmlEqual(target.innerHTML, `
+			<p>#FF0000</p>
+			<p>#00FF00</p>
+			<p>#0000FF</p>
+		`);
+
+		component.tags = [
+			{
+				name: 'Red',
+				color: '#FF0000'
+			},
+			{
+				name: 'Green',
+				color: '#00FF00'
+			},
+			{
+				name: 'Blue',
+				color: '#0000FF'
+			},
+			{
+				name: 'Black',
+				color: '#000000'
+			},
+			{
+				name: 'White',
+				color: '#FFFFFF'
+			}
+		];
+
+		assert.htmlEqual(target.innerHTML, `
+			<p>#FF0000</p>
+			<p>#00FF00</p>
+			<p>#0000FF</p>
+			<p>#000000</p>
+			<p>#FFFFFF</p>
+		`);
+	}
+};
diff --git a/test/runtime/samples/const-tag-each-arrow/main.svelte b/test/runtime/samples/const-tag-each-arrow/main.svelte
new file mode 100644
index 0000000000..7292a7d485
--- /dev/null
+++ b/test/runtime/samples/const-tag-each-arrow/main.svelte
@@ -0,0 +1,21 @@
+<script>
+	export let tags = [
+		{
+			name: 'Red',
+			color: '#FF0000'
+		},
+		{
+			name: 'Green',
+			color: '#00FF00'
+		},
+		{
+			name: 'Blue',
+			color: '#0000FF'
+		}
+	];
+</script>
+
+{#each tags as tag}
+	{@const tagColor = tags.find(t => t.name === tag.name).color}
+	<p>{tagColor}</p>
+{/each}
diff --git a/test/validator/samples/illegal-variable-declaration/errors.json b/test/validator/samples/illegal-variable-declaration/errors.json
new file mode 100644
index 0000000000..e3d273138e
--- /dev/null
+++ b/test/validator/samples/illegal-variable-declaration/errors.json
@@ -0,0 +1,17 @@
+[
+	{
+		"code": "illegal-variable-declaration",
+		"message": "Cannot declare same variable name which is imported inside <script context=\"module\">",
+		"start": {
+			"line": 6,
+			"column": 1,
+			"character": 86
+		},
+		"end": {
+			"line": 6,
+			"column": 9,
+			"character": 94
+		},
+		"pos": 86
+	}
+]
diff --git a/test/validator/samples/illegal-variable-declaration/input.svelte b/test/validator/samples/illegal-variable-declaration/input.svelte
new file mode 100644
index 0000000000..4542380f49
--- /dev/null
+++ b/test/validator/samples/illegal-variable-declaration/input.svelte
@@ -0,0 +1,9 @@
+<script context="module">
+	import { FOO } from './dummy.svelte';
+</script>
+
+<script>
+	let FOO;
+</script>
+
+{FOO}