[email protected]

Minor Changes

• feat: Add support for evented msgspec.Struct objects (#64)

  Our experimental descriptor API can now work with msgspec, a fast and efficient serialization library, similar to pydantic but with a stronger emphasis on ser/de, and less on runtime casting of Python types.

  from anywidget._descriptor import MimeBundleDescriptor
  import psygnal
  import msgspec
  
  @psygnal.evented
  class Counter(msgspec.Struct, weakref=True):
      value: int = 0
      _repr_mimebundle_: ClassVar = MimeBundleDescriptor(_esm="index.js", autodetect_observer=False)

[email protected]

Patch Changes

• fix: properly cache cleanup function for HMR (#122)

[email protected]

Minor Changes

• fix: replace deprecated ipykernel.comm.Comm with comm module (#119)

Patch Changes

• fix: revert watchfiles to optional-dependency (#118)

[email protected]

Patch Changes

• fix: add watchfiles as a direct dependency (#116)

[email protected]

Patch Changes

• fix: JS variable scope issue (eacc99c)

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Patch Changes

• feat: log an re-raise error on ESM import failure (#105)

v0.2.1

Patch Changes

fix: allow more flexible semver resolution for @jupyter-widgets/base (#107)

v0.2.0

Minor Changes

• feat: auto-create (and watch) FileContents for valid file paths (#79)

  import anywidget
  import traitlets
  
  class Counter(anywidget.AnyWidget):
      _esm = "index.js"
      value = traitlets.Int(0).tag(sync=True)

  If a file path for an existing file is detected for _esm or _css,
  the contents will be read from disk automatically. If the resolved
  path is not in site-packages (i.e., likely a development install), a
  background thread will start watching for file changes and push updates
  to the front end.

• feat: add anywidget/types to npm package to allow opt-in strictness (#80)

  // @ts-check
  
  /** @type {import("anywidget/types").Render<{ value: number }>} */
  export function render(view) {
    let value = view.model.get("value");
    //^ ? `number`
  
    view.model.set("value", "not-a-number");
    // Error: Argument of type 'string' is not assignable to parameter of type 'number'. [2345]
  }

v0.1.2

Patch Changes

• feat: add (optional) cleanup/unmount return to render (#67)

  export function render(view) {
    /* create elements and add event listeners */
    return function cleanup() => {
      /* specify how to cleanup any expensive resources created above */
    }
  }

• feat: add colab metadata to _repr_mimebundle_ to fix displaying ipywidgets v7 & v8 in Colab (#75)

v0.1.1

Patch Changes

• fix: support ipywidgets v7 and v8 in Google Colab (#52) (7540ec9)

• fix: hot CSS replacement (#65) (7540ec9)

• feat: add ESM fallback if none is specified for an anywidget.AnyWidget subclass (#45) (7540ec9)

  class MyWidget(anywidget.AnyWidget):
      ...
  
  MyWidget()
  # Dev note: Implement an `_esm` attribute on AnyWidget subclass
  # `__main__.MyWidget` to customize this widget.

• feat: add FileContents to read/watch files (#62) (7540ec9)

  contents = FileContents("./index.js", start_thread=True)
  
  contents.changed.connect
  def _on_change(new_contents: str):
      print("index.js changed:")
      print(new_contents)

• chore: deprecate _module attribute for _esm for defining widget ESM (#66) (7540ec9)

• fix: support Python 3.7 with from __future__ import annotations (#44) (7540ec9)

• feat: add MimeBundleDescriptor pattern, for more library agnostic Python <> JS communication (#49) (7540ec9)

  from anywidget._descriptor import MimeBundleDescriptor
  
  import traitlets
  
  class Counter(traitlets.HasTraits):
      _repr_mimebundle_ = MimeBundleDescriptor(_esm=ESM)
      value = traitlets.Int(0).tag(sync=True)

• feat: add support for HMR during development (#60) (7540ec9)