Custom TypeScript Types (#3835)

This PR adds better TypeScript types into Slate and is based on the proposal here: https://github.com/ianstormtaylor/slate/issues/3725

* Extend Slate's types like Element and Text

* Supports type discrimination (ie. if an element has type === "table" then we get a reduced set of properties)

* added custom types

* files

* more extensions

* files

* changed fixtures

* changes eslint file

* changed element.children to descendant

* updated types

* more type changes

* changed a lot of typing, still getting building errors

* extended text type in slate-react

* removed type assertions

* Clean up of custom types and a couple uneeded comments.

* Rename headingElement-true.tsx.tsx to headingElement-true.tsx

* moved basetext and baselement

* Update packages/slate/src/interfaces/text.ts

Co-authored-by: Brent Farese <25846953+BrentFarese@users.noreply.github.com>

* Fix some type issues with core functions.

* Clean up text and element files.

* Convert other types to extended types.

* Change the type of editor.marks to the appropriate type.

* Add version 100.0.0 to package.json

* Revert "Add version 100.0.0 to package.json"

This reverts commit 329e44e43d.

* added custom types

* files

* more extensions

* files

* changed fixtures

* changes eslint file

* changed element.children to descendant

* updated types

* more type changes

* changed a lot of typing, still getting building errors

* extended text type in slate-react

* removed type assertions

* Clean up of custom types and a couple uneeded comments.

* Rename headingElement-true.tsx.tsx to headingElement-true.tsx

* moved basetext and baselement

* Update packages/slate/src/interfaces/text.ts

Co-authored-by: Brent Farese <25846953+BrentFarese@users.noreply.github.com>

* Fix some type issues with core functions.

* Clean up text and element files.

* Convert other types to extended types.

* Change the type of editor.marks to the appropriate type.

* Run linter.

* Remove key:string uknown from the base types.

* Clean up types after removing key:string unknown.

* Lint and prettier fixes.

* Implement custom-types

Co-authored-by: mdmjg <mdj308@nyu.edu>

* added custom types to examples

* reset yarn lock

* added ts to fixtures

* examples custom types

* Working fix

* ts-thesunny-try

* Extract interface types.

* Fix minor return type in create-editor.

* Fix the typing issue with Location having compile time CustomTypes

* Extract types for Transforms.

* Update README.

* Fix dependency on slate-history in slate-react

Co-authored-by: mdmjg <mdj308@nyu.edu>
Co-authored-by: Brent Farese <brentfarese@gmail.com>
Co-authored-by: Brent Farese <25846953+BrentFarese@users.noreply.github.com>
Co-authored-by: Tim Buckley <timothypbuckley@gmail.com>

docs/api/transforms.md

@@ -8,28 +8,28 @@ Transforms that operate on nodes.
 
 ###### NodeOptions
 
-All transforms listed below support a parameter `options`. This includes options specific to the transform, and general `NodeOptions` to specify the place in the document that the transform is applied to. 
+All transforms listed below support a parameter `options`. This includes options specific to the transform, and general `NodeOptions` to specify the place in the document that the transform is applied to.
 
 ```typescript
 interface NodeOptions {
-    at?: Location
-    match?: (node: Node) => boolean
-    mode?: 'highest' | 'lowest'
-    voids?: boolean
+  at?: Location
+  match?: (node: Node) => boolean
+  mode?: 'highest' | 'lowest'
+  voids?: boolean
 }
 ```
 
 ###### `Transforms.insertNodes(editor: Editor, nodes: Node | Node[], options?)`
 
-Insert `nodes` at the specified location in the document.  If no location is specified, insert at the current selection. If there is no selection, insert at the end of the document.
+Insert `nodes` at the specified location in the document. If no location is specified, insert at the current selection. If there is no selection, insert at the end of the document.
 
-Options supported: `NodeOptions & {hanging?: boolean, select?: boolean}`. 
+Options supported: `NodeOptions & {hanging?: boolean, select?: boolean}`.
 
 ###### `Transforms.removeNodes(editor: Editor, options?)`
 
-Remove nodes at the specified location in the document. If no location is specified, remove the nodes in the selection. 
+Remove nodes at the specified location in the document. If no location is specified, remove the nodes in the selection.
 
-Options supported: `NodeOptions & {hanging?: boolean}` 
+Options supported: `NodeOptions & {hanging?: boolean}`
 
 ###### `Transforms.mergeNodes(editor: Editor, options?)`
 
@@ -41,7 +41,7 @@ Options supported: `NodeOptions & {hanging?: boolean}`
 
 Split nodes at the specified location. If no location is specified, split the selection.
 
-Options supported: `NodeOptions & {height?: number, always?: boolean}` 
+Options supported: `NodeOptions & {height?: number, always?: boolean}`
 
 ###### `Transforms.wrapNodes(editor: Editor, element: Element, options?)`
 
@@ -75,7 +75,7 @@ Options supported: `NodeOptions`. For `options.mode`, `'all'` is also supported.
 
 ###### `Transforms.moveNodes(editor: Editor, options)`
 
-Move the nodes from an origin to a destination. A destination must be specified in the `options`.  If no origin is specified, move the selection.
+Move the nodes from an origin to a destination. A destination must be specified in the `options`. If no origin is specified, move the selection.
 
 Options supported: `NodeOptions & {to: Path}`. For `options.mode`, `'all'` is also supported.
 
@@ -87,7 +87,7 @@ Transforms that operate on the document's selection.
 
 Collapse the selection to a single point.
 
-Options:  `{edge?: 'anchor' | 'focus' | 'start' | 'end'}`
+Options: `{edge?: 'anchor' | 'focus' | 'start' | 'end'}`
 
 ###### `Transforms.select(editor: Editor, target: Location)`