any-data

any-data

Convert data of any type to text, json, formData, TypedArray, Blob, or ArrayBuffer

npm install any-data

Motivation

I needed a tool for dealing with the wide variety of data types that can be passed to new Response(). So AnyData allows lazy data conversion for response bodies to simplify http server middleware such as calculating etags and Brotli compression.

Note that AnyData does not support ReadableStream even though Response does.

Table of contents

1. Example usage
2. API
3. Supported data types
4. Changes
   1. Changelog
   2. Roadmap
5. Community
   1. Contributing
   2. ISC license

Example usage

new AnyData('hello world').bytes(); // UTF-8 encoded in Uint8Array
new AnyData(myArrayBuffer).bytes(); // Array buffer as Uint8Array
new AnyData(myBlob).arrayBuffer(); // Blob as ArrayBuffer

API

const hello = new AnyData('hello world');

// getting data
await hello.text(); // get data as text
await hello.json(); // get data as an object; will throw if data isn't valid JSON
await hello.arrayBuffer(); // get data as ArrayBuffer
await hello.blob(); // get data as Blob
await hello.bytes(); // get data as Uint8Array
await hello.formData(); // get data as FormData object

// setting data to something new
hello.set('foo bar');

// utility methods
hello.clone(); // returns a new AnyData object with a DEEP clone of the underlying data
hello.isEmpty(); // true if data is empty
hello.isSupported(); // true if data type is supported
hello.getDataCategory(); // Either bytes, text, or unknown

Supported data types

data type / method	text()	json()	formData()	bytes()	blob()	arrayBuffer()	clone()
null	""	undefined	(empty)	(empty)	(empty)	(empty)	null
string	itself	If valid JSON	If valid	Yes	Yes	Yes	itself
Record<string, any>	JSON	itself	Yes	JSON	JSON	JSON	deep copy
Array	JSON	itself	as entries	JSON	JSON	JSON	deep copy
Response	text()	json()	formData()	bytes()	blob()	arrayBuffer()	clone()
Blob	Yes	If valid JSON	If valid JSON	Yes	itself	Yes	deep copy
ArrayBuffer	Yes	If valid JSON	If valid JSON	Yes	Yes	Yes	deep copy
TypedArray	Yes	If valid JSON	If valid JSON	Yes	Yes	Yes	deep copy
DataView	Yes	If valid JSON	If valid JSON	Yes	Yes	Yes	deep copy
FormData †	Yes	Error	itself	Yes	Yes	Yes	deep copy
ReadableStream	Yes	If valid JSON	If valid JSON	Yes	Yes	Yes	deep copy
URLSearchParams	URL	entries	Yes	URL	URL	URL	deep copy

† Note: all FormData is serialized to text with multi-part form boundary markers

Community

Contributing

Please open a ticket or PR on GitHub. All contributions are subject to the Code of Conduct.

ISC License

ISC License

Changelog

1.0.0

• Initial release