removed xo

* Suppress warnings when importing web stream
* added node: prefix
* updated changelog
* apply `standard streams.cjs --fix`

.github/workflows/ci.yml

@@ -14,7 +14,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macOS-latest]
-        node: ["16", "15", "14", engines]
+        node: ["16", "15", "14", "12", engines]
         exclude:
           # On Windows, run tests with only the LTS environments.
           - os: windows-latest

CHANGELOG.md

@@ -5,22 +5,16 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/) and this
 project adheres to [Semantic Versioning](http://semver.org/).
 
-(Unreleased)
+## v3.1.3
-==================
-### Removed
-- 
-### Changed
-- 
-### Added
--
-### Fixed
 - Allow usage of iterable object in Blob constructor. [#108]
 - Run test WPT test against our impl [#109]
 - File name are now casted to string [#109]
 - Slicing in the middle of multiple parts added more bytes than what what it should have [#109]
+- Prefixed `stream/web` import with `node:` to allow easier static analysis detection of Node built-ins [#122]
+- Added `node:` prefix in `from.js` as well [#114]
+- Suppress warning when importing `stream/web` [#114]
 
 ## v3.1.2
-
 - Improved typing
 - Fixed a bug where position in iterator did not increase
 
@@ -101,3 +95,4 @@ project adheres to [Semantic Versioning](http://semver.org/).
 
 [#108]: https://github.com/node-fetch/fetch-blob/pull/108
 [#109]: https://github.com/node-fetch/fetch-blob/pull/109
+[#114]: https://github.com/node-fetch/fetch-blob/pull/114

file.js

@@ -1,40 +1,44 @@
-import Blob from './index.js';
+import Blob from './index.js'
 
 const _File = class File extends Blob {
-  #lastModified = 0;
+  #lastModified = 0
-  #name = '';
+  #name = ''
 
   /**
    * @param {*[]} fileBits
    * @param {string} fileName
    * @param {{lastModified?: number, type?: string}} options
    */// @ts-ignore
-  constructor(fileBits, fileName, options = {}) {
+  constructor (fileBits, fileName, options = {}) {
     if (arguments.length < 2) {
-      throw new TypeError(`Failed to construct 'File': 2 arguments required, but only ${arguments.length} present.`);
+      throw new TypeError(`Failed to construct 'File': 2 arguments required, but only ${arguments.length} present.`)
     }
-    super(fileBits, options);
+    super(fileBits, options)
 
-    if (options === null) options = {};
+    if (options === null) options = {}
 
-    const modified = Number(options.lastModified);
+    // Simulate WebIDL type casting for NaN value in lastModified option.
-    this.#lastModified = Number.isNaN(modified) ? Date.now() : modified
+    const lastModified = options.lastModified === undefined ? Date.now() : Number(options.lastModified)
-    this.#name = String(fileName);
+    if (!Number.isNaN(lastModified)) {
+      this.#lastModified = lastModified
+    }
+
+    this.#name = String(fileName)
   }
 
-  get name() {
+  get name () {
-    return this.#name;
+    return this.#name
   }
 
-  get lastModified() {
+  get lastModified () {
-    return this.#lastModified;
+    return this.#lastModified
   }
 
-  get [Symbol.toStringTag]() {
+  get [Symbol.toStringTag] () {
-    return "File";
+    return 'File'
   }
 }
 
 /** @type {typeof globalThis.File} */// @ts-ignore
-export const File = _File;
+export const File = _File
-export default File;
+export default File

from.js

@@ -1,58 +1,57 @@
-import {statSync, createReadStream, promises as fs} from 'fs';
+import { statSync, createReadStream, promises as fs } from 'node:fs'
-import {basename} from 'path';
+import { basename } from 'node:path'
-import {MessageChannel} from 'worker_threads';
+import { MessageChannel } from 'node:worker_threads'
 
-import File from './file.js';
+import File from './file.js'
-import Blob from './index.js';
+import Blob from './index.js'
 
-const {stat} = fs;
+const { stat } = fs
 
 const DOMException = globalThis.DOMException || (() => {
-	const port = new MessageChannel().port1
+  const port = new MessageChannel().port1
-	const ab = new ArrayBuffer(0)
+  const ab = new ArrayBuffer(0)
-	try { port.postMessage(ab, [ab, ab]) }
+  try { port.postMessage(ab, [ab, ab]) } catch (err) { return err.constructor }
-	catch (err) { return err.constructor }
 })()
 
 /**
  * @param {string} path filepath on the disk
  * @param {string} [type] mimetype to use
  */
-const blobFromSync = (path, type) => fromBlob(statSync(path), path, type);
+const blobFromSync = (path, type) => fromBlob(statSync(path), path, type)
 
 /**
  * @param {string} path filepath on the disk
  * @param {string} [type] mimetype to use
  */
-const blobFrom = (path, type) => stat(path).then(stat => fromBlob(stat, path, type));
+const blobFrom = (path, type) => stat(path).then(stat => fromBlob(stat, path, type))
 
 /**
  * @param {string} path filepath on the disk
  * @param {string} [type] mimetype to use
  */
-const fileFrom = (path, type) => stat(path).then(stat => fromFile(stat, path, type));
+const fileFrom = (path, type) => stat(path).then(stat => fromFile(stat, path, type))
 
 /**
  * @param {string} path filepath on the disk
  * @param {string} [type] mimetype to use
  */
-const fileFromSync = (path, type) => fromFile(statSync(path), path, type);
+const fileFromSync = (path, type) => fromFile(statSync(path), path, type)
 
 // @ts-ignore
 const fromBlob = (stat, path, type = '') => new Blob([new BlobDataItem({
-	path,
+  path,
-	size: stat.size,
+  size: stat.size,
-	lastModified: stat.mtimeMs,
+  lastModified: stat.mtimeMs,
-	start: 0
+  start: 0
-})], {type});
+})], { type })
 
 // @ts-ignore
 const fromFile = (stat, path, type = '') => new File([new BlobDataItem({
-	path,
+  path,
-	size: stat.size,
+  size: stat.size,
-	lastModified: stat.mtimeMs,
+  lastModified: stat.mtimeMs,
-	start: 0
+  start: 0
-})], basename(path), { type, lastModified: stat.mtimeMs });
+})], basename(path), { type, lastModified: stat.mtimeMs })
 
 /**
  * This is a blob backed up by a file on the disk
@@ -62,44 +61,44 @@ const fromFile = (stat, path, type = '') => new File([new BlobDataItem({
  * @private
  */
 class BlobDataItem {
-	#path;
+  #path
-	#start;
+  #start
 
-	constructor(options) {
+  constructor (options) {
-		this.#path = options.path;
+    this.#path = options.path
-		this.#start = options.start;
+    this.#start = options.start
-		this.size = options.size;
+    this.size = options.size
-		this.lastModified = options.lastModified
+    this.lastModified = options.lastModified
-	}
+  }
 
-	/**
+  /**
-	 * Slicing arguments is first validated and formatted
+   * Slicing arguments is first validated and formatted
-	 * to not be out of range by Blob.prototype.slice
+   * to not be out of range by Blob.prototype.slice
-	 */
+   */
-	slice(start, end) {
+  slice (start, end) {
-		return new BlobDataItem({
+    return new BlobDataItem({
-			path: this.#path,
+      path: this.#path,
-			lastModified: this.lastModified,
+      lastModified: this.lastModified,
-			size: end - start,
+      size: end - start,
-			start
+      start
-		});
+    })
-	}
+  }
 
-	async * stream() {
+  async * stream () {
-		const {mtimeMs} = await stat(this.#path)
+    const { mtimeMs } = await stat(this.#path)
-		if (mtimeMs > this.lastModified) {
+    if (mtimeMs > this.lastModified) {
-			throw new DOMException('The requested file could not be read, typically due to permission problems that have occurred after a reference to a file was acquired.', 'NotReadableError');
+      throw new DOMException('The requested file could not be read, typically due to permission problems that have occurred after a reference to a file was acquired.', 'NotReadableError')
-		}
+    }
-		yield * createReadStream(this.#path, {
+    yield * createReadStream(this.#path, {
-			start: this.#start,
+      start: this.#start,
-			end: this.#start + this.size - 1
+      end: this.#start + this.size - 1
-		});
+    })
-	}
+  }
 
-	get [Symbol.toStringTag]() {
+  get [Symbol.toStringTag] () {
-		return 'Blob';
+    return 'Blob'
-	}
+  }
 }
 
-export default blobFromSync;
+export default blobFromSync
-export {File, Blob, blobFrom, blobFromSync, fileFrom, fileFromSync};
+export { File, Blob, blobFrom, blobFromSync, fileFrom, fileFromSync }

index.js

@@ -1,246 +1,251 @@
+/*! fetch-blob. MIT License. Jimmy Wärting <https://jimmy.warting.se/opensource> */
 
 // TODO (jimmywarting): in the feature use conditional loading with top level await (requires 14.x)
 // Node has recently added whatwg stream into core
 
-import './streams.cjs';
+import './streams.cjs'
 
 /** @typedef {import('buffer').Blob} NodeBlob} */
 
 // 64 KiB (same size chrome slice theirs blob into Uint8array's)
-const POOL_SIZE = 65536;
+const POOL_SIZE = 65536
 
 /** @param {(Blob | NodeBlob | Uint8Array)[]} parts */
 async function * toIterator (parts, clone = true) {
-	for (let part of parts) {
+  for (const part of parts) {
-		if ('stream' in part) {
+    if ('stream' in part) {
-			yield * part.stream();
+      yield * part.stream()
-		} else if (ArrayBuffer.isView(part)) {
+    } else if (ArrayBuffer.isView(part)) {
-			if (clone) {
+      if (clone) {
-				let position = part.byteOffset;
+        let position = part.byteOffset
-				let end = part.byteOffset + part.byteLength;
+        const end = part.byteOffset + part.byteLength
-				while (position !== end) {
+        while (position !== end) {
-					const size = Math.min(end - position, POOL_SIZE);
+          const size = Math.min(end - position, POOL_SIZE)
-					const chunk = part.buffer.slice(position, position + size);
+          const chunk = part.buffer.slice(position, position + size)
-					position += chunk.byteLength;
+          position += chunk.byteLength
-					yield new Uint8Array(chunk);
+          yield new Uint8Array(chunk)
-				}
+        }
-			} else {
+      } else {
-				yield part;
+        yield part
-			}
+      }
-		} else {
+    } else {
-			/* c8 ignore start */
+      /* c8 ignore start */
-			// For blobs that have arrayBuffer but no stream method (nodes buffer.Blob)
+      // For blobs that have arrayBuffer but no stream method (nodes buffer.Blob)
-			let position = 0;
+      let position = 0
-			while (position !== part.size) {
+      while (position !== part.size) {
-				const chunk = part.slice(position, Math.min(part.size, position + POOL_SIZE));
+        const chunk = part.slice(position, Math.min(part.size, position + POOL_SIZE))
-				const buffer = await chunk.arrayBuffer();
+        const buffer = await chunk.arrayBuffer()
-				position += buffer.byteLength;
+        position += buffer.byteLength
-				yield new Uint8Array(buffer);
+        yield new Uint8Array(buffer)
-			}
+      }
-			/* c8 ignore end */
+      /* c8 ignore end */
-		}
+    }
-	}
+  }
 }
 
 const _Blob = class Blob {
+  /** @type {Array.<(Blob|Uint8Array)>} */
+  #parts = []
+  #type = ''
+  #size = 0
 
-	/** @type {Array.<(Blob|Uint8Array)>} */
+  /**
-	#parts = [];
+   * The Blob() constructor returns a new Blob object. The content
-	#type = '';
+   * of the blob consists of the concatenation of the values given
-	#size = 0;
+   * in the parameter array.
+   *
+   * @param {*} blobParts
+   * @param {{ type?: string }} [options]
+   */
+  constructor (blobParts = [], options = {}) {
+    if (typeof blobParts !== 'object' || blobParts === null) {
+      throw new TypeError('Failed to construct \'Blob\': The provided value cannot be converted to a sequence.')
+    }
 
-	/**
+    if (typeof blobParts[Symbol.iterator] !== 'function') {
-	 * The Blob() constructor returns a new Blob object. The content
+      throw new TypeError('Failed to construct \'Blob\': The object must have a callable @@iterator property.')
-	 * of the blob consists of the concatenation of the values given
+    }
-	 * in the parameter array.
-	 *
-	 * @param {*} blobParts
-	 * @param {{ type?: string }} [options]
-	 */
-	constructor(blobParts = [], options = {}) {
-		const parts = [];
-		let size = 0;
-		if (typeof blobParts !== 'object') {
-			throw new TypeError(`Failed to construct 'Blob': parameter 1 is not an iterable object.`);
-		}
 
-		if (typeof options !== 'object' && typeof options !== 'function') {
+    if (typeof options !== 'object' && typeof options !== 'function') {
-			throw new TypeError(`Failed to construct 'Blob': parameter 2 cannot convert to dictionary.`);
+      throw new TypeError('Failed to construct \'Blob\': parameter 2 cannot convert to dictionary.')
-		}
+    }
 
-		if (options === null) options = {};
+    if (options === null) options = {}
 
-		for (const element of blobParts) {
+    const encoder = new TextEncoder()
-			let part;
+    for (const element of blobParts) {
-			if (ArrayBuffer.isView(element)) {
+      let part
-				part = new Uint8Array(element.buffer.slice(element.byteOffset, element.byteOffset + element.byteLength));
+      if (ArrayBuffer.isView(element)) {
-			} else if (element instanceof ArrayBuffer) {
+        part = new Uint8Array(element.buffer.slice(element.byteOffset, element.byteOffset + element.byteLength))
-				part = new Uint8Array(element.slice(0));
+      } else if (element instanceof ArrayBuffer) {
-			} else if (element instanceof Blob) {
+        part = new Uint8Array(element.slice(0))
-				part = element;
+      } else if (element instanceof Blob) {
-			} else {
+        part = element
-				part = new TextEncoder().encode(element);
+      } else {
-			}
+        part = encoder.encode(element)
+      }
 
-			size += ArrayBuffer.isView(part) ? part.byteLength : part.size;
+      this.#size += ArrayBuffer.isView(part) ? part.byteLength : part.size
-			parts.push(part);
+      this.#parts.push(part)
-		}
+    }
 
-		const type = options.type === undefined ? '' : String(options.type);
+    const type = options.type === undefined ? '' : String(options.type)
 
-		this.#type = /^[\x20-\x7E]*$/.test(type) ? type : '';
+    this.#type = /^[\x20-\x7E]*$/.test(type) ? type : ''
-		this.#size = size;
+  }
-		this.#parts = parts;
-	}
 
-	/**
+  /**
-	 * The Blob interface's size property returns the
+   * The Blob interface's size property returns the
-	 * size of the Blob in bytes.
+   * size of the Blob in bytes.
-	 */
+   */
-	get size() {
+  get size () {
-		return this.#size;
+    return this.#size
-	}
+  }
 
-	/**
+  /**
-	 * The type property of a Blob object returns the MIME type of the file.
+   * The type property of a Blob object returns the MIME type of the file.
-	 */
+   */
-	get type() {
+  get type () {
-		return this.#type;
+    return this.#type
-	}
+  }
 
-	/**
+  /**
-	 * The text() method in the Blob interface returns a Promise
+   * The text() method in the Blob interface returns a Promise
-	 * that resolves with a string containing the contents of
+   * that resolves with a string containing the contents of
-	 * the blob, interpreted as UTF-8.
+   * the blob, interpreted as UTF-8.
-	 *
+   *
-	 * @return {Promise<string>}
+   * @return {Promise<string>}
-	 */
+   */
-	async text() {
+  async text () {
-		// More optimized than using this.arrayBuffer()
+    // More optimized than using this.arrayBuffer()
-		// that requires twice as much ram
+    // that requires twice as much ram
-		const decoder = new TextDecoder();
+    const decoder = new TextDecoder()
-		let str = '';
+    let str = ''
-		for await (let part of toIterator(this.#parts, false)) {
+    for await (const part of toIterator(this.#parts, false)) {
-			str += decoder.decode(part, { stream: true });
+      str += decoder.decode(part, { stream: true })
-		}
+    }
-		// Remaining
+    // Remaining
-		str += decoder.decode();
+    str += decoder.decode()
-		return str;
+    return str
-	}
+  }
 
-	/**
+  /**
-	 * The arrayBuffer() method in the Blob interface returns a
+   * The arrayBuffer() method in the Blob interface returns a
-	 * Promise that resolves with the contents of the blob as
+   * Promise that resolves with the contents of the blob as
-	 * binary data contained in an ArrayBuffer.
+   * binary data contained in an ArrayBuffer.
-	 *
+   *
-	 * @return {Promise<ArrayBuffer>}
+   * @return {Promise<ArrayBuffer>}
-	 */
+   */
-	async arrayBuffer() {
+  async arrayBuffer () {
-		// Easier way... Just a unnecessary overhead
+    // Easier way... Just a unnecessary overhead
-		// const view = new Uint8Array(this.size);
+    // const view = new Uint8Array(this.size);
-		// await this.stream().getReader({mode: 'byob'}).read(view);
+    // await this.stream().getReader({mode: 'byob'}).read(view);
-		// return view.buffer;
+    // return view.buffer;
 
-		const data = new Uint8Array(this.size);
+    const data = new Uint8Array(this.size)
-		let offset = 0;
+    let offset = 0
-		for await (const chunk of toIterator(this.#parts, false)) {
+    for await (const chunk of toIterator(this.#parts, false)) {
-			data.set(chunk, offset);
+      data.set(chunk, offset)
-			offset += chunk.length;
+      offset += chunk.length
-		}
+    }
 
-		return data.buffer;
+    return data.buffer
-	}
+  }
 
-	stream() {
+  stream () {
-		const it = toIterator(this.#parts, true);
+    const it = toIterator(this.#parts, true)
 
-		return new ReadableStream({
+    return new globalThis.ReadableStream({
-			type: 'bytes',
+      type: 'bytes',
-			async pull(ctrl) {
+      async pull (ctrl) {
-				const chunk = await it.next();
+        const chunk = await it.next()
-				chunk.done ? ctrl.close() : ctrl.enqueue(chunk.value);
+        chunk.done ? ctrl.close() : ctrl.enqueue(chunk.value)
-			}
+      },
-		})
-	}
 
-	/**
+      async cancel () {
-	 * The Blob interface's slice() method creates and returns a
+        await it.return()
-	 * new Blob object which contains data from a subset of the
+      }
-	 * blob on which it's called.
+    })
-	 *
+  }
-	 * @param {number} [start]
-	 * @param {number} [end]
-	 * @param {string} [type]
-	 */
-	slice(start = 0, end = this.size, type = '') {
-		const {size} = this;
 
-		let relativeStart = start < 0 ? Math.max(size + start, 0) : Math.min(start, size);
+  /**
-		let relativeEnd = end < 0 ? Math.max(size + end, 0) : Math.min(end, size);
+   * The Blob interface's slice() method creates and returns a
+   * new Blob object which contains data from a subset of the
+   * blob on which it's called.
+   *
+   * @param {number} [start]
+   * @param {number} [end]
+   * @param {string} [type]
+   */
+  slice (start = 0, end = this.size, type = '') {
+    const { size } = this
 
-		const span = Math.max(relativeEnd - relativeStart, 0);
+    let relativeStart = start < 0 ? Math.max(size + start, 0) : Math.min(start, size)
-		const parts = this.#parts;
+    let relativeEnd = end < 0 ? Math.max(size + end, 0) : Math.min(end, size)
-		const blobParts = [];
-		let added = 0;
 
-		for (const part of parts) {
+    const span = Math.max(relativeEnd - relativeStart, 0)
-			// don't add the overflow to new blobParts
+    const parts = this.#parts
-			if (added >= span) {
+    const blobParts = []
-				break;
+    let added = 0
-			}
 
-			const size = ArrayBuffer.isView(part) ? part.byteLength : part.size;
+    for (const part of parts) {
-			if (relativeStart && size <= relativeStart) {
+      // don't add the overflow to new blobParts
-				// Skip the beginning and change the relative
+      if (added >= span) {
-				// start & end position as we skip the unwanted parts
+        break
-				relativeStart -= size;
+      }
-				relativeEnd -= size;
-			} else {
-				let chunk
-				if (ArrayBuffer.isView(part)) {
-					chunk = part.subarray(relativeStart, Math.min(size, relativeEnd));
-					added += chunk.byteLength
-				} else {
-					chunk = part.slice(relativeStart, Math.min(size, relativeEnd));
-					added += chunk.size
-				}
-				relativeEnd -= size;
-				blobParts.push(chunk);
-				relativeStart = 0; // All next sequential parts should start at 0
-			}
-		}
 
-		const blob = new Blob([], {type: String(type).toLowerCase()});
+      const size = ArrayBuffer.isView(part) ? part.byteLength : part.size
-		blob.#size = span;
+      if (relativeStart && size <= relativeStart) {
-		blob.#parts = blobParts;
+        // Skip the beginning and change the relative
+        // start & end position as we skip the unwanted parts
+        relativeStart -= size
+        relativeEnd -= size
+      } else {
+        let chunk
+        if (ArrayBuffer.isView(part)) {
+          chunk = part.subarray(relativeStart, Math.min(size, relativeEnd))
+          added += chunk.byteLength
+        } else {
+          chunk = part.slice(relativeStart, Math.min(size, relativeEnd))
+          added += chunk.size
+        }
+        relativeEnd -= size
+        blobParts.push(chunk)
+        relativeStart = 0 // All next sequential parts should start at 0
+      }
+    }
 
-		return blob;
+    const blob = new Blob([], { type: String(type).toLowerCase() })
-	}
+    blob.#size = span
+    blob.#parts = blobParts
 
-	get [Symbol.toStringTag]() {
+    return blob
-		return 'Blob';
+  }
-	}
 
-	static [Symbol.hasInstance](object) {
+  get [Symbol.toStringTag] () {
-		return (
+    return 'Blob'
-			object &&
+  }
-			typeof object === 'object' &&
+
-			typeof object.constructor === 'function' &&
+  static [Symbol.hasInstance] (object) {
-			(
+    return (
-				typeof object.stream === 'function' ||
+      object &&
-				typeof object.arrayBuffer === 'function'
+      typeof object === 'object' &&
-			) &&
+      typeof object.constructor === 'function' &&
-			/^(Blob|File)$/.test(object[Symbol.toStringTag])
+      (
-		);
+        typeof object.stream === 'function' ||
-	}
+        typeof object.arrayBuffer === 'function'
+      ) &&
+      /^(Blob|File)$/.test(object[Symbol.toStringTag])
+    )
+  }
 }
 
 Object.defineProperties(_Blob.prototype, {
-	size: {enumerable: true},
+  size: { enumerable: true },
-	type: {enumerable: true},
+  type: { enumerable: true },
-	slice: {enumerable: true}
+  slice: { enumerable: true }
-});
+})
 
 /** @type {typeof globalThis.Blob} */
-export const Blob = _Blob;
+export const Blob = _Blob
-export default Blob;
+export default Blob

package.json

@@ -1,6 +1,6 @@
 {
     "name": "fetch-blob",
-    "version": "3.1.2",
+    "version": "3.1.3",
     "description": "Blob & File implementation in Node.js, originally from node-fetch.",
     "main": "index.js",
     "type": "module",
@@ -14,9 +14,8 @@
         "streams.cjs"
     ],
     "scripts": {
-        "lint": "xo test.js",
         "test-wpt": "node --experimental-loader ./test/http-loader.js ./test/test-wpt-in-node.js",
-        "test": "npm run lint && ava test.js",
+        "test": "ava test.js",
         "report": "c8 --reporter json --reporter text ava test.js",
         "coverage": "c8 --reporter json --reporter text ava test.js && codecov -f coverage/coverage-final.json",
         "prepublishOnly": "tsc --declaration --emitDeclarationOnly --allowJs index.js from.js"
@@ -36,37 +35,12 @@
         "url": "https://github.com/node-fetch/fetch-blob/issues"
     },
     "homepage": "https://github.com/node-fetch/fetch-blob#readme",
-    "xo": {
-        "rules": {
-            "unicorn/prefer-node-protocol": "off",
-            "unicorn/numeric-separators-style": "off",
-            "unicorn/prefer-spread": "off",
-            "unicorn/prefer-number-properties": "off",
-            "import/extensions": [
-                "error",
-                "always",
-                {
-                    "ignorePackages": true
-                }
-            ]
-        },
-        "overrides": [
-            {
-                "files": "test.js",
-                "rules": {
-                    "node/no-unsupported-features/es-syntax": 0,
-                    "node/no-unsupported-features/node-builtins": 0
-                }
-            }
-        ]
-    },
     "devDependencies": {
         "ava": "^3.15.0",
         "c8": "^7.7.2",
         "codecov": "^3.8.2",
         "node-fetch": "^3.0.0-beta.9",
-        "typescript": "^4.3.2",
+        "typescript": "^4.3.2"
-        "xo": "^0.40.1"
     },
     "funding": [
         {

streams.cjs

@@ -1,37 +1,51 @@
 /* c8 ignore start */
 // 64 KiB (same size chrome slice theirs blob into Uint8array's)
-const POOL_SIZE = 65536;
+const POOL_SIZE = 65536
 
 if (!globalThis.ReadableStream) {
+  // `node:stream/web` got introduced in v16.5.0 as experimental
+  // and it's preferred over the polyfilled version. So we also
+  // suppress the warning that gets emitted by NodeJS for using it.
   try {
-    Object.assign(globalThis, require('stream/web'))
+    const process = require('node:process')
+    const { emitWarning } = process
+    try {
+      process.emitWarning = () => {}
+      Object.assign(globalThis, require('node:stream/web'))
+      process.emitWarning = emitWarning
+    } catch (error) {
+      process.emitWarning = emitWarning
+      throw error
+    }
   } catch (error) {
-		// TODO: Remove when only supporting node >= 16.5.0
+    // fallback to polyfill implementation
     Object.assign(globalThis, require('web-streams-polyfill/dist/ponyfill.es2018.js'))
   }
 }
 
 try {
-  const {Blob} = require('buffer')
+  // Don't use node: prefix for this, require+node: is not supported until node v14.14
+  // Only `import()` can use prefix in 12.20 and later
+  const { Blob } = require('buffer')
   if (Blob && !Blob.prototype.stream) {
-		Blob.prototype.stream = function name(params) {
+    Blob.prototype.stream = function name (params) {
-			let position = 0;
+      let position = 0
-			const blob = this;
+      const blob = this
 
-			return new ReadableStream({
+      return new ReadableStream({
-				type: 'bytes',
+        type: 'bytes',
-				async pull(ctrl) {
+        async pull (ctrl) {
-					const chunk = blob.slice(position, Math.min(blob.size, position + POOL_SIZE));
+          const chunk = blob.slice(position, Math.min(blob.size, position + POOL_SIZE))
-					const buffer = await chunk.arrayBuffer();
+          const buffer = await chunk.arrayBuffer()
-					position += buffer.byteLength;
+          position += buffer.byteLength
-					ctrl.enqueue(new Uint8Array(buffer))
+          ctrl.enqueue(new Uint8Array(buffer))
 
-					if (position === blob.size) {
+          if (position === blob.size) {
-						ctrl.close()
+            ctrl.close()
-					}
+          }
-				}
+        }
-			})
+      })
-		}
+    }
-	}
+  }
 } catch (error) {}
 /* c8 ignore end */

test.js

@@ -1,396 +1,442 @@
-import fs from 'fs';
+import fs from 'fs'
-import {Readable} from 'stream';
+import { Readable } from 'stream'
-import buffer from 'buffer';
+import buffer from 'buffer'
-import test from 'ava';
+import test from 'ava'
-import {Response} from 'node-fetch';
+import { Response } from 'node-fetch'
-import syncBlob, {blobFromSync, blobFrom, fileFromSync, fileFrom} from './from.js';
+import syncBlob, { blobFromSync, blobFrom, fileFromSync, fileFrom } from './from.js'
-import File from './file.js';
+import File from './file.js'
-import Blob from './index.js';
+import Blob from './index.js'
 
-const license = fs.readFileSync('./LICENSE', 'utf-8');
+const license = fs.readFileSync('./LICENSE', 'utf-8')
 
 test('new Blob()', t => {
-	const blob = new Blob(); // eslint-disable-line no-unused-vars
+  const blob = new Blob() // eslint-disable-line no-unused-vars
-	t.pass();
+  t.pass()
-});
+})
 
 test('new Blob(parts)', t => {
-	const data = 'a=1';
+  const data = 'a=1'
-	const blob = new Blob([data]); // eslint-disable-line no-unused-vars
+  const blob = new Blob([data]) // eslint-disable-line no-unused-vars
-	t.pass();
+  t.pass()
-});
+})
 
 test('Blob ctor parts', async t => {
-	const parts = [
+  const parts = [
-		'a',
+    'a',
-		new Uint8Array([98]),
+    new Uint8Array([98]),
-		new Uint16Array([25699]),
+    new Uint16Array([25699]),
-		new Uint8Array([101]).buffer,
+    new Uint8Array([101]).buffer,
-		Buffer.from('f'),
+    Buffer.from('f'),
-		new Blob(['g']),
+    new Blob(['g']),
-		{},
+    {},
-		new URLSearchParams('foo')
+    new URLSearchParams('foo')
-	];
+  ]
 
-	const blob = new Blob(parts);
+  const blob = new Blob(parts)
-	t.is(await blob.text(), 'abcdefg[object Object]foo=');
+  t.is(await blob.text(), 'abcdefg[object Object]foo=')
-});
+})
 
 test('Blob ctor threats an object with @@iterator as a sequence', async t => {
-	const blob = new Blob({[Symbol.iterator]: Array.prototype[Symbol.iterator]});
+  const blob = new Blob({ [Symbol.iterator]: Array.prototype[Symbol.iterator] })
 
-	t.is(blob.size, 0);
+  t.is(blob.size, 0)
-	t.is(await blob.text(), '');
+  t.is(await blob.text(), '')
-});
+})
 
 test('Blob ctor reads blob parts from object with @@iterator', async t => {
-	const input = ['one', 'two', 'three'];
+  const input = ['one', 'two', 'three']
-	const expected = input.join('');
+  const expected = input.join('')
 
-	const blob = new Blob({
+  const blob = new Blob({
-		* [Symbol.iterator]() {
+    * [Symbol.iterator] () {
-			yield * input;
+      yield * input
-		}
+    }
-	});
+  })
 
-	t.is(blob.size, new TextEncoder().encode(expected).byteLength);
+  t.is(blob.size, new TextEncoder().encode(expected).byteLength)
-	t.is(await blob.text(), expected);
+  t.is(await blob.text(), expected)
-});
+})
 
 test('Blob ctor throws a string', t => {
-	t.throws(() => new Blob('abc'));
+  t.throws(() => new Blob('abc'), {
-});
+    instanceOf: TypeError,
+    message: 'Failed to construct \'Blob\': The provided value cannot be converted to a sequence.'
+  })
+})
+
+test('Blob ctor throws an error for an object that does not have @@iterable method', t => {
+  t.throws(() => new Blob({}), {
+    instanceOf: TypeError,
+    message: 'Failed to construct \'Blob\': The object must have a callable @@iterator property.'
+  })
+})
 
 test('Blob ctor threats Uint8Array as a sequence', async t => {
-	const input = [1, 2, 3];
+  const input = [1, 2, 3]
-	const blob = new Blob(new Uint8Array(input));
+  const blob = new Blob(new Uint8Array(input))
 
-	t.is(await blob.text(), input.join(''));
+  t.is(await blob.text(), input.join(''))
-});
+})
 
 test('Blob size', t => {
-	const data = 'a=1';
+  const data = 'a=1'
-	const blob = new Blob([data]);
+  const blob = new Blob([data])
-	t.is(blob.size, data.length);
+  t.is(blob.size, data.length)
-});
+})
 
 test('Blob type', t => {
-	const type = 'text/plain';
+  const type = 'text/plain'
-	const blob = new Blob([], {type});
+  const blob = new Blob([], { type })
-	t.is(blob.type, type);
+  t.is(blob.type, type)
-});
+})
 
 test('Blob slice type', t => {
-	const type = 'text/plain';
+  const type = 'text/plain'
-	const blob = new Blob().slice(0, 0, type);
+  const blob = new Blob().slice(0, 0, type)
-	t.is(blob.type, type);
+  t.is(blob.type, type)
-});
+})
 
 test('invalid Blob type', t => {
-	const blob = new Blob([], {type: '\u001Ftext/plain'});
+  const blob = new Blob([], { type: '\u001Ftext/plain' })
-	t.is(blob.type, '');
+  t.is(blob.type, '')
-});
+})
 
 test('invalid Blob slice type', t => {
-	const blob = new Blob().slice(0, 0, '\u001Ftext/plain');
+  const blob = new Blob().slice(0, 0, '\u001Ftext/plain')
-	t.is(blob.type, '');
+  t.is(blob.type, '')
-});
+})
 
 test('Blob text()', async t => {
-	const data = 'a=1';
+  const data = 'a=1'
-	const type = 'text/plain';
+  const type = 'text/plain'
-	const blob = new Blob([data], {type});
+  const blob = new Blob([data], { type })
-	t.is(await blob.text(), data);
+  t.is(await blob.text(), data)
-});
+})
 
 test('Blob arrayBuffer()', async t => {
-	const data = 'a=1';
+  const data = 'a=1'
-	const type = 'text/plain';
+  const type = 'text/plain'
-	const blob = new Blob([data], {type});
+  const blob = new Blob([data], { type })
 
-	const decoder = new TextDecoder('utf-8');
+  const decoder = new TextDecoder('utf-8')
-	const buffer = await blob.arrayBuffer();
+  const buffer = await blob.arrayBuffer()
-	t.is(decoder.decode(buffer), data);
+  t.is(decoder.decode(buffer), data)
-});
+})
 
 test('Blob stream()', async t => {
-	const data = 'a=1';
+  const data = 'a=1'
-	const type = 'text/plain';
+  const type = 'text/plain'
-	const blob = new Blob([data], {type});
+  const blob = new Blob([data], { type })
 
-	for await (const chunk of blob.stream()) {
+  for await (const chunk of blob.stream()) {
-		t.is(chunk.join(), [97, 61, 49].join());
+    t.is(chunk.join(), [97, 61, 49].join())
-	}
+  }
-});
+})
+
+test('Blob stream() can be cancelled', async t => {
+  const stream = new Blob(['Some content']).stream()
+
+  // Cancel the stream before start reading, or this will throw an error
+  await stream.cancel()
+
+  const reader = stream.getReader()
+
+  const { done, value: chunk } = await reader.read()
+
+  t.true(done)
+  t.is(chunk, undefined)
+})
 
 test('Blob toString()', t => {
-	const data = 'a=1';
+  const data = 'a=1'
-	const type = 'text/plain';
+  const type = 'text/plain'
-	const blob = new Blob([data], {type});
+  const blob = new Blob([data], { type })
-	t.is(blob.toString(), '[object Blob]');
+  t.is(blob.toString(), '[object Blob]')
-});
+})
 
 test('Blob slice()', async t => {
-	const data = 'abcdefgh';
+  const data = 'abcdefgh'
-	const blob = new Blob([data]).slice();
+  const blob = new Blob([data]).slice()
-	t.is(await blob.text(), data);
+  t.is(await blob.text(), data)
-});
+})
 
 test('Blob slice(0, 1)', async t => {
-	const data = 'abcdefgh';
+  const data = 'abcdefgh'
-	const blob = new Blob([data]).slice(0, 1);
+  const blob = new Blob([data]).slice(0, 1)
-	t.is(await blob.text(), 'a');
+  t.is(await blob.text(), 'a')
-});
+})
 
 test('Blob slice(-1)', async t => {
-	const data = 'abcdefgh';
+  const data = 'abcdefgh'
-	const blob = new Blob([data]).slice(-1);
+  const blob = new Blob([data]).slice(-1)
-	t.is(await blob.text(), 'h');
+  t.is(await blob.text(), 'h')
-});
+})
 
 test('Blob slice(0, -1)', async t => {
-	const data = 'abcdefgh';
+  const data = 'abcdefgh'
-	const blob = new Blob([data]).slice(0, -1);
+  const blob = new Blob([data]).slice(0, -1)
-	t.is(await blob.text(), 'abcdefg');
+  t.is(await blob.text(), 'abcdefg')
-});
+})
 
 test('Blob(["hello ", "world"]).slice(5)', async t => {
-	const parts = ['hello ', 'world'];
+  const parts = ['hello ', 'world']
-	const blob = new Blob(parts);
+  const blob = new Blob(parts)
-	t.is(await blob.slice(5).text(), ' world');
+  t.is(await blob.slice(5).text(), ' world')
-});
+})
 
 test('throw away unwanted parts', async t => {
-	const blob = new Blob(['a', 'b', 'c']).slice(1, 2);
+  const blob = new Blob(['a', 'b', 'c']).slice(1, 2)
-	t.is(await blob.text(), 'b');
+  t.is(await blob.text(), 'b')
-});
+})
 
 test('Blob works with node-fetch Response.blob()', async t => {
-	const data = 'a=1';
+  const data = 'a=1'
-	const type = 'text/plain';
+  const type = 'text/plain'
-	const blob = new Blob([data], {type});
+  const blob = new Blob([data], { type })
-	const response = new Response(Readable.from(blob.stream()));
+  const response = new Response(Readable.from(blob.stream()))
-	const blob2 = await response.blob();
+  const blob2 = await response.blob()
-	t.is(await blob2.text(), data);
+  t.is(await blob2.text(), data)
-});
+})
 
 test('Blob works with node-fetch Response.text()', async t => {
-	const data = 'a=1';
+  const data = 'a=1'
-	const type = 'text/plain';
+  const type = 'text/plain'
-	const blob = new Blob([data], {type});
+  const blob = new Blob([data], { type })
-	const response = new Response(Readable.from(blob.stream()));
+  const response = new Response(Readable.from(blob.stream()))
-	const text = await response.text();
+  const text = await response.text()
-	t.is(text, data);
+  t.is(text, data)
-});
+})
 
 test('blob part backed up by filesystem', async t => {
-	const blob = blobFromSync('./LICENSE');
+  const blob = blobFromSync('./LICENSE')
-	t.is(await blob.slice(0, 3).text(), license.slice(0, 3));
+  t.is(await blob.slice(0, 3).text(), license.slice(0, 3))
-	t.is(await blob.slice(4, 11).text(), license.slice(4, 11));
+  t.is(await blob.slice(4, 11).text(), license.slice(4, 11))
-});
+})
 
 test('Reading after modified should fail', async t => {
-	const blob = blobFromSync('./LICENSE');
+  const blob = blobFromSync('./LICENSE')
-	await new Promise(resolve => {
+  await new Promise(resolve => {
-		setTimeout(resolve, 500);
+    setTimeout(resolve, 500)
-	});
+  })
-	fs.closeSync(fs.openSync('./LICENSE', 'a'));
+  fs.closeSync(fs.openSync('./LICENSE', 'a'))
-	const error = await t.throwsAsync(blob.text());
+  const error = await t.throwsAsync(blob.text())
-	t.is(error.constructor.name, 'DOMException');
+  t.is(error.constructor.name, 'DOMException')
-	t.is(error instanceof Error, true);
+  t.is(error instanceof Error, true)
-	t.is(error.name, 'NotReadableError');
+  t.is(error.name, 'NotReadableError')
 
-	const file = fileFromSync('./LICENSE');
+  const file = fileFromSync('./LICENSE')
-	// Above test updates the last modified date to now
+  // Above test updates the last modified date to now
-	t.is(typeof file.lastModified, 'number');
+  t.is(typeof file.lastModified, 'number')
-	// The lastModifiedDate is deprecated and removed from spec
+  // The lastModifiedDate is deprecated and removed from spec
-	t.false('lastModifiedDate' in file);
+  t.false('lastModifiedDate' in file)
-	const mod = file.lastModified - Date.now();
+  const mod = file.lastModified - Date.now()
-	t.true(mod <= 0 && mod >= -500); // Close to tolerance: 0.500ms
+  t.true(mod <= 0 && mod >= -500) // Close to tolerance: 0.500ms
-});
+})
 
 test('Reading file after modified should fail', async t => {
-	const file = fileFromSync('./LICENSE');
+  const file = fileFromSync('./LICENSE')
-	await new Promise(resolve => {
+  await new Promise(resolve => {
-		setTimeout(resolve, 100);
+    setTimeout(resolve, 100)
-	});
+  })
-	const now = new Date();
+  const now = new Date()
-	// Change modified time
+  // Change modified time
-	fs.utimesSync('./LICENSE', now, now);
+  fs.utimesSync('./LICENSE', now, now)
-	const error = await t.throwsAsync(file.text());
+  const error = await t.throwsAsync(file.text())
-	t.is(error.constructor.name, 'DOMException');
+  t.is(error.constructor.name, 'DOMException')
-	t.is(error instanceof Error, true);
+  t.is(error instanceof Error, true)
-	t.is(error.name, 'NotReadableError');
+  t.is(error.name, 'NotReadableError')
-});
+})
 
 test('Reading from the stream created by blobFrom', async t => {
-	const blob = blobFromSync('./LICENSE');
+  const blob = blobFromSync('./LICENSE')
-	const actual = await blob.text();
+  const actual = await blob.text()
-	t.is(actual, license);
+  t.is(actual, license)
-});
+})
 
 test('create a blob from path asynchronous', async t => {
-	const blob = await blobFrom('./LICENSE');
+  const blob = await blobFrom('./LICENSE')
-	const actual = await blob.text();
+  const actual = await blob.text()
-	t.is(actual, license);
+  t.is(actual, license)
-});
+})
 
 test('Reading empty blobs', async t => {
-	const blob = blobFromSync('./LICENSE').slice(0, 0);
+  const blob = blobFromSync('./LICENSE').slice(0, 0)
-	const actual = await blob.text();
+  const actual = await blob.text()
-	t.is(actual, '');
+  t.is(actual, '')
-});
+})
 
 test('Blob-ish class is an instance of Blob', t => {
-	class File {
+  class File {
-		stream() {}
+    stream () {}
 
-		get [Symbol.toStringTag]() {
+    get [Symbol.toStringTag] () {
-			return 'File';
+      return 'File'
-		}
+    }
-	}
+  }
 
-	t.true(new File() instanceof Blob);
+  t.true(new File() instanceof Blob)
-});
+})
 
 test('Instanceof check returns false for nullish values', t => {
-	t.false(null instanceof Blob);
+  t.false(null instanceof Blob)
-});
+})
 
 /** @see https://github.com/w3c/FileAPI/issues/43 - important to keep boundary value */
 test('Dose not lowercase the blob values', t => {
-	const type = 'multipart/form-data; boundary=----WebKitFormBoundaryTKqdrVt01qOBltBd';
+  const type = 'multipart/form-data; boundary=----WebKitFormBoundaryTKqdrVt01qOBltBd'
-	t.is(new Blob([], {type}).type, type);
+  t.is(new Blob([], { type }).type, type)
-});
+})
 
 test('Parts are immutable', async t => {
-	const buf = new Uint8Array([97]);
+  const buf = new Uint8Array([97])
-	const blob = new Blob([buf]);
+  const blob = new Blob([buf])
-	buf[0] = 98;
+  buf[0] = 98
-	t.is(await blob.text(), 'a');
+  t.is(await blob.text(), 'a')
-});
+})
 
 test('Blobs are immutable', async t => {
-	const buf = new Uint8Array([97]);
+  const buf = new Uint8Array([97])
-	const blob = new Blob([buf]);
+  const blob = new Blob([buf])
-	const chunk = await blob.stream().getReader().read();
+  const chunk = await blob.stream().getReader().read()
-	t.is(chunk.value[0], 97);
+  t.is(chunk.value[0], 97)
-	chunk.value[0] = 98;
+  chunk.value[0] = 98
-	t.is(await blob.text(), 'a');
+  t.is(await blob.text(), 'a')
-});
+})
 
 // This was necessary to avoid large ArrayBuffer clones (slice)
 test('Large chunks are divided into smaller chunks', async t => {
-	const buf = new Uint8Array(65590);
+  const buf = new Uint8Array(65590)
-	const blob = new Blob([buf]);
+  const blob = new Blob([buf])
-	let i = 0;
+  let i = 0
-	// eslint-disable-next-line no-unused-vars
+  // eslint-disable-next-line no-unused-vars
-	for await (const chunk of blob.stream()) {
+  for await (const chunk of blob.stream()) {
-		i++;
+    i++
-	}
+  }
 
-	t.is(i === 2, true);
+  t.is(i === 2, true)
-});
+})
 
 test('Can use named import - as well as default', async t => {
-	// eslint-disable-next-line node/no-unsupported-features/es-syntax
+  // eslint-disable-next-line node/no-unsupported-features/es-syntax
-	const {Blob, default: def} = await import('./index.js');
+  const { Blob, default: def } = await import('./index.js')
-	t.is(Blob, def);
+  t.is(Blob, def)
-});
+})
 
 test('default from.js exports blobFromSync', t => {
-	t.is(blobFromSync, syncBlob);
+  t.is(blobFromSync, syncBlob)
-});
+})
 
 if (buffer.Blob) {
-	test('Can wrap buffer.Blob to a fetch-blob', async t => {
+  test('Can wrap buffer.Blob to a fetch-blob', async t => {
-		const blob1 = new buffer.Blob(['blob part']);
+    const blob1 = new buffer.Blob(['blob part'])
-		const blob2 = new Blob([blob1]);
+    const blob2 = new Blob([blob1])
-		t.is(await blob2.text(), 'blob part');
+    t.is(await blob2.text(), 'blob part')
-	});
+  })
 }
 
 test('File is a instance of blob', t => {
-	t.true(new File([], '') instanceof Blob);
+  t.true(new File([], '') instanceof Blob)
-});
+})
 
 test('fileFrom returns the name', async t => {
-	t.is((await fileFrom('./LICENSE')).name, 'LICENSE');
+  t.is((await fileFrom('./LICENSE')).name, 'LICENSE')
-});
+})
 
 test('fileFromSync returns the name', t => {
-	t.is(fileFromSync('./LICENSE').name, 'LICENSE');
+  t.is(fileFromSync('./LICENSE').name, 'LICENSE')
-});
+})
 
 test('fileFromSync(path, type) sets the type', t => {
-	t.is(fileFromSync('./LICENSE', 'text/plain').type, 'text/plain');
+  t.is(fileFromSync('./LICENSE', 'text/plain').type, 'text/plain')
-});
+})
 
 test('blobFromSync(path, type) sets the type', t => {
-	t.is(blobFromSync('./LICENSE', 'text/plain').type, 'text/plain');
+  t.is(blobFromSync('./LICENSE', 'text/plain').type, 'text/plain')
-});
+})
 
 test('fileFrom(path, type) sets the type', async t => {
-	const file = await fileFrom('./LICENSE', 'text/plain');
+  const file = await fileFrom('./LICENSE', 'text/plain')
-	t.is(file.type, 'text/plain');
+  t.is(file.type, 'text/plain')
-});
+})
 
 test('new File(,,{lastModified: 100})', t => {
-	const mod = new File([], '', {lastModified: 100}).lastModified;
+  const mod = new File([], '', { lastModified: 100 }).lastModified
-	t.is(mod, 100);
+  t.is(mod, 100)
-});
+})
 
 test('new File(,,{lastModified: "200"})', t => {
-	const mod = new File([], '', {lastModified: '200'}).lastModified;
+  const mod = new File([], '', { lastModified: '200' }).lastModified
-	t.is(mod, 200);
+  t.is(mod, 200)
-});
+})
 
 test('new File(,,{lastModified: true})', t => {
-	const mod = new File([], '', {lastModified: true}).lastModified;
+  const mod = new File([], '', { lastModified: true }).lastModified
-	t.is(mod, 1);
+  t.is(mod, 1)
-});
+})
 
 test('new File(,,{lastModified: new Date()})', t => {
-	const mod = new File([], '', {lastModified: new Date()}).lastModified - Date.now();
+  const mod = new File([], '', { lastModified: new Date() }).lastModified - Date.now()
-	t.true(mod <= 0 && mod >= -20); // Close to tolerance: 0.020ms
+  t.true(mod <= 0 && mod >= -20) // Close to tolerance: 0.020ms
-});
+})
+
+test('new File(,,{lastModified: undefined})', t => {
+  const mod = new File([], '', { lastModified: undefined }).lastModified - Date.now()
+  t.true(mod <= 0 && mod >= -20) // Close to tolerance: 0.020ms
+})
+
+test('new File(,,{lastModified: null})', t => {
+  const mod = new File([], '', { lastModified: null }).lastModified
+  t.is(mod, 0)
+})
+
+test('Interpretes NaN value in lastModified option as 0', t => {
+  t.plan(3)
+
+  const values = ['Not a Number', [], {}]
+
+  // I can't really see anything about this in the spec,
+  // but this is how browsers handle type casting for this option...
+  for (const lastModified of values) {
+    const file = new File(['Some content'], 'file.txt', { lastModified })
+
+    t.is(file.lastModified, 0)
+  }
+})
 
 test('new File(,,{}) sets current time', t => {
-	const mod = new File([], '').lastModified - Date.now();
+  const mod = new File([], '').lastModified - Date.now()
-	t.true(mod <= 0 && mod >= -20); // Close to tolerance: 0.020ms
+  t.true(mod <= 0 && mod >= -20) // Close to tolerance: 0.020ms
-});
+})
 
 test('blobFrom(path, type) sets the type', async t => {
-	const blob = await blobFrom('./LICENSE', 'text/plain');
+  const blob = await blobFrom('./LICENSE', 'text/plain')
-	t.is(blob.type, 'text/plain');
+  t.is(blob.type, 'text/plain')
-});
+})
 
 test('blobFrom(path) sets empty type', async t => {
-	const blob = await blobFrom('./LICENSE');
+  const blob = await blobFrom('./LICENSE')
-	t.is(blob.type, '');
+  t.is(blob.type, '')
-});
+})
 
 test('new File() throws with too few args', t => {
-	t.throws(() => new File(), {
+  t.throws(() => new File(), {
-		instanceOf: TypeError,
+    instanceOf: TypeError,
-		message: 'Failed to construct \'File\': 2 arguments required, but only 0 present.'
+    message: 'Failed to construct \'File\': 2 arguments required, but only 0 present.'
-	});
+  })
-});
+})
 
 test('can slice zero sized blobs', async t => {
-	const blob = new Blob();
+  const blob = new Blob()
-	const txt = await blob.slice(0, 0).text();
+  const txt = await blob.slice(0, 0).text()
-	t.is(txt, '');
+  t.is(txt, '')
-});
+})
 
 test('returns a readable stream', t => {
-	const stream = new File([], '').stream();
+  const stream = new File([], '').stream()
-	t.true(typeof stream.getReader === 'function');
+  t.true(typeof stream.getReader === 'function')
-});
+})
 
-test('checking instanceof blob#stream', async t => {
+test('checking instanceof blob#stream', t => {
-	// eslint-disable-next-line node/no-unsupported-features/es-syntax
+  const stream = new File([], '').stream()
-	const {ReadableStream} = await import('stream/web').catch(_ => import('web-streams-polyfill/dist/ponyfill.es2018.js'));
+  t.true(stream instanceof globalThis.ReadableStream)
-	const stream = new File([], '').stream();
+})
-	t.true(stream instanceof ReadableStream);
-});