Add correct type annotations to DraftEditor.react.js

Summary: This diff fixes some debt introduced when the flow failed to infer the types of these functions when automatically annotating them with the Annotate_exports codemod.

Reviewed By: rubennorte

Differential Revision: D13431571

fbshipit-source-id: 53696e7e179b876ffc9d509406fe84e9a2bbb9af

Author: pakoito

src/component/base/DraftEditor.react.js

@@ -465,7 +465,9 @@ class DraftEditor extends React.Component<DraftEditorProps, State> {
    * a specified scroll position (for cases like `cut` behavior where it should
    * be restored to a known position).
    */
-  focus: any = (scrollPosition?: DraftScrollPosition): void => {
+  focus: (scrollPosition?: DraftScrollPosition) => void = (
+    scrollPosition?: DraftScrollPosition,
+  ): void => {
     const {editorState} = this.props;
     const alreadyHasFocus = editorState.getSelection().getHasFocus();
     const editorNode = ReactDOM.findDOMNode(this.editor);
@@ -504,7 +506,7 @@ class DraftEditor extends React.Component<DraftEditorProps, State> {
     }
   };
 
-  blur: any = (): void => {
+  blur: () => void = (): void => {
     const editorNode = ReactDOM.findDOMNode(this.editor);
     invariant(
       editorNode instanceof HTMLElement,
@@ -520,11 +522,11 @@ class DraftEditor extends React.Component<DraftEditorProps, State> {
    * handler module to ensure that DOM events are managed appropriately for
    * the active mode.
    */
-  setMode: any = (mode: DraftEditorModes): void => {
+  setMode: DraftEditorModes => void = (mode: DraftEditorModes): void => {
     this._handler = handlerMap[mode];
   };
 
-  exitCurrentMode: any = (): void => {
+  exitCurrentMode: () => void = (): void => {
     this.setMode('edit');
   };
 
@@ -537,7 +539,9 @@ class DraftEditor extends React.Component<DraftEditorProps, State> {
    * reconciliation occurs on a version of the DOM that is synchronized with
    * our EditorState.
    */
-  restoreEditorDOM: any = (scrollPosition?: DraftScrollPosition): void => {
+  restoreEditorDOM: (scrollPosition?: DraftScrollPosition) => void = (
+    scrollPosition?: DraftScrollPosition,
+  ): void => {
     this.setState({contentsKey: this.state.contentsKey + 1}, () => {
       this.focus(scrollPosition);
     });
@@ -548,7 +552,7 @@ class DraftEditor extends React.Component<DraftEditorProps, State> {
    *
    * Set the clipboard state for a cut/copy event.
    */
-  setClipboard: any = (clipboard: ?BlockMap): void => {
+  setClipboard: (?BlockMap) => void = (clipboard: ?BlockMap): void => {
     this._clipboard = clipboard;
   };
 
@@ -557,7 +561,7 @@ class DraftEditor extends React.Component<DraftEditorProps, State> {
    *
    * Retrieve the clipboard state for a cut/copy event.
    */
-  getClipboard: any = (): ?BlockMap => {
+  getClipboard: () => ?BlockMap = (): ?BlockMap => {
     return this._clipboard;
   };
 
@@ -570,7 +574,7 @@ class DraftEditor extends React.Component<DraftEditorProps, State> {
    * an `onChange` prop to receive state updates passed along from this
    * function.
    */
-  update: any = (editorState: EditorState): void => {
+  update: EditorState => void = (editorState: EditorState): void => {
     this._latestEditorState = editorState;
     this.props.onChange(editorState);
   };
@@ -580,14 +584,14 @@ class DraftEditor extends React.Component<DraftEditorProps, State> {
    * a dragged element enters and leaves the editor (or any of its children),
    * to determine when the dragged element absolutely leaves the editor.
    */
-  onDragEnter: any = (): void => {
+  onDragEnter: () => void = (): void => {
     this._dragCount++;
   };
 
   /**
    * See `onDragEnter()`.
    */
-  onDragLeave: any = (): void => {
+  onDragLeave: () => void = (): void => {
     this._dragCount--;
     if (this._dragCount === 0) {
       this.exitCurrentMode();