type: Fix types errors.

Author: jaywcjlove

src/utils/getSurroundingWord.ts

@@ -1,5 +1,4 @@
 import { TextRange } from '../commands';
-import { getSurroundingWord } from './getSurroundingWord';
 
 export interface TextSection {
   text: string;
@@ -72,3 +71,32 @@ export function getBreaksNeededForEmptyLineAfter(text = '', startPosition: numbe
   }
   return isInLastLine ? 0 : neededBreaks;
 }
+
+export function getSurroundingWord(text: string, position: number): TextRange {
+  if (!text) throw Error("Argument 'text' should be truthy");
+
+  const isWordDelimiter = (c: string) => c === ' ' || c.charCodeAt(0) === 10;
+
+  // leftIndex is initialized to 0 because if selection is 0, it won't even enter the iteration
+  let start = 0;
+  // rightIndex is initialized to text.length because if selection is equal to text.length it won't even enter the interation
+  let end = text.length;
+
+  // iterate to the left
+  for (let i = position; i - 1 > -1; i--) {
+    if (isWordDelimiter(text[i - 1])) {
+      start = i;
+      break;
+    }
+  }
+
+  // iterate to the right
+  for (let i = position; i < text.length; i++) {
+    if (isWordDelimiter(text[i])) {
+      end = i;
+      break;
+    }
+  }
+
+  return { start, end };
+}

src/utils/markdownUtils.ts

@@ -3,7 +3,7 @@
  */
 /* eslint-disable jest/no-conditional-expect */
 import '@testing-library/jest-dom';
-import { getSurroundingWord } from '../../src/utils';
+import { getSurroundingWord } from '../../src/utils/markdownUtils';
 
 it('getSurroundingWord', () => {
   expect(getSurroundingWord('hello world', 0)).toMatchObject({