4.0.0

Remove

• [BREAKING] Remove builtin multipart/form-data encoder and all related methods. You need check if your HTTP client supports spec-compliant FormData in Node.js and if it don't, then you can suggest them to implement multipart/form-data encoding or use form-data-encoder package;
• [BREAKING] Remove support for Buffer and ReadStream (the one you might create with fs.createReadStream), you can use Blob, fileFromPath and fileFromPathSync to replace them. Other async data sources are still supported - see documentation for more information;
• Remove polyfill entry points;
• Remove unused helpers and reduce overall size of the project.

Update

• [BREAKING] Set minimal required Node.js version to 12.20;
• [BREAKING] Separate fileFromPath functions from main entry point:

- import {fileFromPath, fileFromPathSync} from "formdata-node"
+ import {fileFromPath, fileFromPathSync} from "formdata-node/file-from-path"

This subpath is NOT available in browsers!

• [BREAKING] Expose isFile from file-from-path subpath;

- import {isFileLike} from "formdata-node"
+ import {isFile} from "formdata-node/file-from-path"

• [BREAKING] Rename FormDataFieldValue type to FormDataEntryValue (TypeScript specific);
• Fix message for the error thrown when filename argument passed with non-File value to set() or append();
• Improved documentation.

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Closes #42
All changes: v3.7.0...v4.0.0