chore: initial commit

.editorconfig

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+# editorconfig.org
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.md]
+trim_trailing_whitespace = false

.gitignore

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+.DS_Store
+Thumbs.db
+npm/
+coverage

.vscode/extensions.json

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+{
+  "recommendations": [
+    "denoland.vscode-deno"
+  ]
+}

.vscode/settings.json

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+{
+  "editor.defaultFormatter": "denoland.vscode-deno",
+  "editor.formatOnSave": true,
+  "editor.codeActionsOnSave": {
+    "source.fixAll": true
+  },
+  "deno.enable": true,
+  "deno.codeLens.referencesAllFunctions": true,
+  "deno.internalDebug": true,
+  "deno.lint": true,
+  "deno.suggest.completeFunctionCalls": true,
+  "deno.unstable": true,
+  "deno.codeLens.references": true,
+  "deno.suggest.autoImports": true,
+  "deno.suggest.names": true,
+  "deno.suggest.imports.autoDiscover": true,
+  "deno.suggest.paths": true,
+  "deno.codeLens.test": true,
+  "deno.codeLens.implementations": true,
+  "deno.codeLens.testArgs": [
+    "--allow-all"
+  ]
+}

LICENSE

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+MIT License
+
+Copyright (c) 2023 httpland
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

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+# response-utils
+
+[![deno land](http://img.shields.io/badge/available%20on-deno.land/x-lightgrey.svg?logo=deno)](https://deno.land/x/response_utils)
+[![GitHub release (latest by date)](https://img.shields.io/github/v/release/httpland/response-utils)](https://github.com/httpland/response-utils/releases)
+[![codecov](https://codecov.io/github/httpland/response-utils/branch/main/graph/badge.svg)](https://codecov.io/gh/httpland/response-utils)
+[![GitHub](https://img.shields.io/github/license/httpland/response-utils)](https://github.com/httpland/response-utils/blob/main/LICENSE)
+
+[![test](https://github.com/httpland/response-utils/actions/workflows/test.yaml/badge.svg)](https://github.com/httpland/response-utils/actions/workflows/test.yaml)
+[![NPM](https://nodei.co/npm/@httpland/response-utils.png?mini=true)](https://nodei.co/npm/@httpland/response-utils/)
+
+Response utility collection.
+
+## createResponse
+
+Create a new `Response`
+
+If you create a new `Response` from an existing `Response`, any options you set
+in an options argument for the new response replace any corresponding options
+set in the original `Response`.
+
+```ts
+import { createResponse } from "https://deno.land/x/response_utils@$VERSION/create.ts";
+import { assertEquals } from "https://deno.land/std/testing/asserts.ts";
+
+declare const init: Response;
+const response = createResponse(init, { status: 201 });
+
+assertEquals(response.status, 201);
+```
+
+## equalsResponse
+
+Check two `Response` fields equality.
+
+```ts
+import { equalsResponse } from "https://deno.land/x/response_utils@$VERSION/equal.ts";
+import { assert } from "https://deno.land/std/testing/asserts.ts";
+
+assert(
+  equalsResponse(
+    new Response(null, { status: 204, headers: { "content-length": "0" } }),
+    new Response(null, { status: 204, headers: { "content-length": "0" } }),
+  ),
+);
+```
+
+If you also want to check the equivalence of the body, set the mode to strict.
+
+```ts
+import { equalsResponse } from "https://deno.land/x/response_utils@$VERSION/equal.ts";
+import { assert } from "https://deno.land/std/testing/asserts.ts";
+
+assert(
+  await equalsResponse(
+    new Response("test1", { status: 200, headers: { "content-length": "5" } }),
+    new Response("test2", { status: 200, headers: { "content-length": "5" } }),
+    true,
+  ),
+);
+```
+
+### Throwing error
+
+In strict mode, if response body has already been read.
+
+```ts
+import { equalsResponse } from "https://deno.land/x/response_utils@$VERSION/equal.ts";
+import { assert, assertThrows } from "https://deno.land/std/testing/asserts.ts";
+
+const response = new Response("");
+await response.text();
+
+assert(response.bodyUsed);
+assertThrows(() => equalsResponse(response, response, true));
+```
+
+## isResponse
+
+Whether the input is `Response` or not.
+
+```ts
+import { isResponse } from "https://deno.land/x/response_utils@$VERSION/is.ts";
+import { assert, assertFalse } from "https://deno.land/std/testing/asserts.ts";
+
+assert(isResponse(new Response()));
+assertFalse(isResponse({}));
+assertFalse(isResponse(null));
+```
+
+## License
+
+Copyright © 2023-present [httpland](https://github.com/httpland).
+
+Released under the [MIT](./LICENSE) license