message: Add test case for exported arrow function
diff: @@ -321,6 +321,57 @@ describe("Change Signature", () => {
  }
  ]
  }
  + },
  + {
  + description: "that import arrow function",
  + setup: {
  + currentFile: {
  + code: `export const add = [cursor](a, b) => {
  + return a + b;
  + }`,
  + path: new AbsolutePath("/temp/module.ts")
  + },
  + otherFiles: [
  + {
  + code: `import {add} from './module';
  + add(1, 2)
  + `,
  + path: addModule
  + },
  + {
  + code: `import {add} from './anotherModule';
  + export const calculateAdd = (a, b) => {
  + return add(a, b);
  + }
  + `,
  + path: anotherModule
  + }
  + ]
  + },
  + expected: {
  + currentFile: {
  + code: `export const add = (b, a) => {
  + return a + b;
  + }`,
  + path: new AbsolutePath("/temp/module.ts")
  + },
  + otherFiles: [
  + {
  + code: `import {add} from './module';
  + add(2, 1)
  + `,
  + path: addModule
  + },
  + {
  + code: `import {add} from './anotherModule';
  + export const calculateAdd = (a, b) => {
  + return add(b, a);
  + }
  + `,
  + path: anotherModule
  + }
  + ]
  + }
  }
  ],
  async ({ setup, expected }) => {
  