From 81a6e26029ff197e79eb9041c80f28d79593061a Mon Sep 17 00:00:00 2001 From: Domenic Denicola Date: Fri, 2 Jan 2026 15:49:26 +0900 Subject: [PATCH 1/2] Update dependencies and dev dependencies Closes #42. Closes #43. --- .github/workflows/build.yml | 4 +- package-lock.json | 140 ++++++++++++++++++------------------ package.json | 6 +- 3 files changed, 77 insertions(+), 73 deletions(-) diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml index a93df93..65237c1 100644 --- a/.github/workflows/build.yml +++ b/.github/workflows/build.yml @@ -16,8 +16,8 @@ jobs: - 22 - latest steps: - - uses: actions/checkout@v5 - - uses: actions/setup-node@v5 + - uses: actions/checkout@v6 + - uses: actions/setup-node@v6 with: node-version: ${{ matrix.node-version }} - run: npm ci diff --git a/package-lock.json b/package-lock.json index 39d12d8..96fe2b0 100644 --- a/package-lock.json +++ b/package-lock.json @@ -10,13 +10,13 @@ "license": "MIT", "dependencies": { "whatwg-mimetype": "^4.0.0", - "whatwg-url": "^15.0.0" + "whatwg-url": "^15.1.0" }, "devDependencies": { "@domenic/eslint-config": "^4.0.1", "c8": "^10.1.3", - "eslint": "^9.35.0", - "globals": "^16.4.0" + "eslint": "^9.39.2", + "globals": "^17.0.0" }, "engines": { "node": ">=20" @@ -43,9 +43,9 @@ } }, "node_modules/@eslint-community/eslint-utils": { - 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"@types/json-schema": "^7.0.15", "ajv": "^6.12.4", "chalk": "^4.0.0", "cross-spawn": "^7.0.6", @@ -790,9 +794,9 @@ } }, "node_modules/esquery": { - "version": "1.6.0", - "resolved": "https://registry.npmjs.org/esquery/-/esquery-1.6.0.tgz", - "integrity": "sha512-ca9pw9fomFcKPvFLXhBKUK90ZvGibiGOvRJNbjljY7s7uq/5YO4BOzcYtJqExdx99rF6aAcnRxHmcUHcz6sQsg==", + "version": "1.7.0", + "resolved": "https://registry.npmjs.org/esquery/-/esquery-1.7.0.tgz", + "integrity": "sha512-Ap6G0WQwcU/LHsvLwON1fAQX9Zp0A2Y6Y/cJBl9r/JbW90Zyg4/zbG6zzKa2OTALELarYHmKu0GhpM5EO+7T0g==", "dev": true, "license": "BSD-3-Clause", "dependencies": { @@ -935,9 +939,9 @@ } }, "node_modules/glob": { - "version": "10.4.5", - "resolved": "https://registry.npmjs.org/glob/-/glob-10.4.5.tgz", - "integrity": "sha512-7Bv8RF0k6xjo7d4A/PxYLbUCfb6c+Vpd2/mB2yRDlew7Jb5hEXiCD9ibfO7wpk8i4sevK6DFny9h7EYbM3/sHg==", + "version": "10.5.0", + "resolved": "https://registry.npmjs.org/glob/-/glob-10.5.0.tgz", + "integrity": "sha512-DfXN8DfhJ7NH3Oe7cFmu3NCu1wKbkReJ8TorzSAFbSKrlNaQSKfIzqYqVY8zlbs2NLBbWpRiU52GX2PbaBVNkg==", "dev": true, "license": "ISC", "dependencies": { @@ -995,9 +999,9 @@ } }, "node_modules/globals": { - 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"version": "7.7.2", - "resolved": "https://registry.npmjs.org/semver/-/semver-7.7.2.tgz", - "integrity": "sha512-RF0Fw+rO5AMf9MAyaRXI4AV0Ulj5lMHqVxxdSgiVbixSCXoEmmX/jk0CuJw4+3SqroYO9VoUh+HcuJivvtJemA==", + "version": "7.7.3", + "resolved": "https://registry.npmjs.org/semver/-/semver-7.7.3.tgz", + "integrity": "sha512-SdsKMrI9TdgjdweUSR9MweHA4EJ8YxHn8DFaDisvhVlUOe4BF1tLD7GAj0lIqWVl+dPb/rExr0Btby5loQm20Q==", "dev": true, "license": "ISC", "bin": { @@ -1664,15 +1668,15 @@ } }, "node_modules/tr46": { - "version": "5.1.1", - "resolved": "https://registry.npmjs.org/tr46/-/tr46-5.1.1.tgz", - "integrity": "sha512-hdF5ZgjTqgAntKkklYw0R03MG2x/bSzTtkxmIRw/sTNV8YXsCJ1tfLAX23lhxhHJlEf3CRCOCGGWw3vI3GaSPw==", + "version": "6.0.0", + "resolved": "https://registry.npmjs.org/tr46/-/tr46-6.0.0.tgz", + "integrity": "sha512-bLVMLPtstlZ4iMQHpFHTR7GAGj2jxi8Dg0s2h2MafAE4uSWF98FC/3MomU51iQAMf8/qDUbKWf5GxuvvVcXEhw==", "license": "MIT", "dependencies": { "punycode": "^2.3.1" }, "engines": { - "node": ">=18" + "node": ">=20" } }, "node_modules/type-check": { @@ -1732,12 +1736,12 @@ } }, "node_modules/whatwg-url": { - "version": "15.0.0", - "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-15.0.0.tgz", - "integrity": "sha512-+0q+Pc6oUhtbbeUfuZd4heMNOLDJDdagYxv756mCf9vnLF+NTj4zvv5UyYNkHJpc3CJIesMVoEIOdhi7L9RObA==", + "version": "15.1.0", + "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-15.1.0.tgz", + "integrity": "sha512-2ytDk0kiEj/yu90JOAp44PVPUkO9+jVhyf+SybKlRHSDlvOOZhdPIrr7xTH64l4WixO2cP+wQIcgujkGBPPz6g==", "license": "MIT", "dependencies": { - "tr46": "^5.1.1", + "tr46": "^6.0.0", "webidl-conversions": "^8.0.0" }, "engines": { diff --git a/package.json b/package.json index 5c3f8f9..af69f16 100644 --- a/package.json +++ b/package.json @@ -28,13 +28,13 @@ }, "dependencies": { "whatwg-mimetype": "^4.0.0", - "whatwg-url": "^15.0.0" + "whatwg-url": "^15.1.0" }, "devDependencies": { "@domenic/eslint-config": "^4.0.1", "c8": "^10.1.3", - "eslint": "^9.35.0", - "globals": "^16.4.0" + "eslint": "^9.39.2", + "globals": "^17.0.0" }, "engines": { "node": ">=20" From 13c173779dd431f257e1869ec6b3f565a5086db7 Mon Sep 17 00:00:00 2001 From: Domenic Denicola Date: Fri, 2 Jan 2026 16:19:54 +0900 Subject: [PATCH 2/2] Improve README * Stop mentioning whatwg-encoding, which is now deprecated. * Fix the example of windows-1252 vs. UTF-8. * Update some links. --- README.md | 18 +++++++++++------- test/api.js | 17 +++++++++++++++++ 2 files changed, 28 insertions(+), 7 deletions(-) diff --git a/README.md b/README.md index 9652613..9ff1cc1 100644 --- a/README.md +++ b/README.md @@ -32,24 +32,28 @@ As shown in the examples above, you can easily get a stringified version of the ### Decoding the body -To decode the body bytes of a parsed data URL, you'll need to use the `charset` parameter of the MIME type, if any. This contains an encoding [label](https://encoding.spec.whatwg.org/#label); there are [various possible labels](https://encoding.spec.whatwg.org/#names-and-labels) for a given encoding. We suggest using the [whatwg-encoding](https://www.npmjs.com/package/whatwg-encoding) package as follows: +To decode the body bytes of a parsed data URL, you'll need to use the `charset` parameter of the MIME type, if any. This contains an encoding [label](https://encoding.spec.whatwg.org/#label); there are [various possible labels](https://encoding.spec.whatwg.org/#names-and-labels) for a given encoding. You can use the [`TextDecoder`](https://developer.mozilla.org/en-US/docs/Web/API/TextDecoder) API for this: ```js const parseDataURL = require("data-urls"); -const { labelToName, decode } = require("whatwg-encoding"); const dataURL = parseDataURL(arbitraryString); -// If there's no charset parameter, let's just hope it's UTF-8; that seems like a good guess. -const encodingName = labelToName(dataURL.mimeType.parameters.get("charset") || "utf-8"); -const bodyDecoded = decode(dataURL.body, encodingName); +// If there's no charset parameter, e.g. if `arbitraryString` is `"data:text/plain,H%C3%A9llo!"`, +// then let's guess UTF-8. +const encodingLabel = dataURL.mimeType.parameters.get("charset") ?? "utf-8"; +const decoder = new TextDecoder(encodingLabel); + +const bodyDecoded = decoder.decode(dataURL.body); ``` -This is especially important since the default, if no parseable MIME type is given, is "US-ASCII", [aka windows-1252](https://encoding.spec.whatwg.org/#names-and-labels), not UTF-8 like you might asume. So for example given an `arbitraryString` of `"data:,Héllo!"`, the above code snippet will correctly produce a `bodyDecoded` of `"Héllo!"` by using the windows-1252 decoder, whereas if you used a UTF-8 decoder you'd get back `"Héllo!"`. +(Note that as of the time of this writing in 2026-01, Node.js's built-in `TextDecoder` has many correctness bugs, so we suggest using the polyfill from the [`@exodus/bytes`](https://www.npmjs.com/package/@exodus/bytes) package until they are fixed.) + +Using the parsed charset is quite important, since [the spec requires](https://fetch.spec.whatwg.org/#data-url-processor) that if no parseable MIME type is given, the default is `"US-ASCII"`, [aka windows-1252](https://encoding.spec.whatwg.org/#note-latin1-ascii)—not UTF-8, like you might asume. So for example, given an `arbitraryString` of `"data:,H%E9llo!"`, the above code snippet will correctly produce a `bodyDecoded` of `"Héllo!"` by using the windows-1252 decoder, whereas if you used a UTF-8 decoder you'd get back `"H�llo!"`. ### Advanced functionality: parsing from a URL record -If you are using the [whatwg-url](https://github.com/jsdom/whatwg-url) package, you may already have a "URL record" object on hand, as produced by that package's `parseURL` export. In that case, you can use this package's `fromURLRecord` export to save a bit of work: +If you are using the [`whatwg-url`](https://www.npmjs.com/package/whatwg-url) package, you may already have a "URL record" object on hand, as produced by that package's `parseURL` export. In that case, you can use this package's `fromURLRecord` export to save a bit of work: ```js const { parseURL } = require("whatwg-url"); diff --git a/test/api.js b/test/api.js index 102450f..372a91d 100644 --- a/test/api.js +++ b/test/api.js @@ -16,6 +16,23 @@ describe("Smoke tests via README examples", () => { assert.deepEqual(textExample.body, new Uint8Array([72, 101, 108, 108, 111, 44, 32, 87, 111, 114, 108, 100, 33])); }); + it("should round-trip no-type as expected", () => { + const textExample = parseDataURL("data:,H%E9llo!"); + assert.equal(textExample.mimeType.toString(), "text/plain;charset=US-ASCII"); + assert.equal(textExample.body.constructor, Uint8Array); + + const encodingLabel = textExample.mimeType.parameters.get("charset") ?? "utf-8"; + assert.equal(encodingLabel, "US-ASCII"); + + const correctDecoder = new TextDecoder(encodingLabel); + const bodyCorrectlyDecoded = correctDecoder.decode(textExample.body); + assert.equal(bodyCorrectlyDecoded, "Héllo!", "correctly decoded"); + + const incorrectDecoder = new TextDecoder("utf-8"); + const bodyIncorrectlyDecoded = incorrectDecoder.decode(textExample.body); + assert.equal(bodyIncorrectlyDecoded, "H�llo!", "incorrectly decoded"); + }); + it("should parse text/html as expected", () => { const htmlExample = parseDataURL("data:text/html,%3Ch1%3EHello%2C%20World!%3C%2Fh1%3E"); assert.equal(htmlExample.mimeType.toString(), "text/html");