Merge pull request #749 from ueokande/qa-0.28

QA 0.28

8 files changed, 226 insertions, 153 deletions

diff --git a/e2e/lib/Console.ts b/e2e/lib/Console.ts
index e3bd2d6..68c0e10 100644
--- a/e2e/lib/Console.ts
+++ b/e2e/lib/Console.ts
@@ -1,64 +1,73 @@
-import { WebDriver, By, Key } from 'selenium-webdriver';
+import { WebDriver, By, Key } from "selenium-webdriver";
 
 export type CompletionItem = {
   type: string;
   text: string;
   highlight: boolean;
-}
+};
 
 export class Console {
-  constructor(private webdriver: WebDriver) {
-  }
+  constructor(private webdriver: WebDriver) {}
 
   async sendKeys(...keys: string[]) {
-    const input = await this.webdriver.findElement(By.css('input'));
+    const input = await this.webdriver.findElement(By.css("input"));
     input.sendKeys(...keys);
   }
 
   async currentValue() {
     return await this.webdriver.executeScript(() => {
-      const input = document.querySelector('input');
+      const input = document.querySelector("input");
       if (input === null) {
-        throw new Error('could not find input element');
+        throw new Error("could not find input element");
       }
       return input.value;
     });
   }
 
   async execCommand(command: string): Promise<void> {
-    const input = await this.webdriver.findElement(By.css('input.vimvixen-console-command-input'));
+    const input = await this.webdriver.findElement(
+      By.css("input.vimvixen-console-command-input")
+    );
     await input.sendKeys(command, Key.ENTER);
   }
 
   async getErrorMessage(): Promise<string> {
-    const p = await this.webdriver.findElement(By.css('.vimvixen-console-error'));
+    const p = await this.webdriver.findElement(
+      By.css(".vimvixen-console-error")
+    );
     return p.getText();
   }
 
   async getInformationMessage(): Promise<string> {
-    const p = await this.webdriver.findElement(By.css('.vimvixen-console-info'));
+    const p = await this.webdriver.findElement(
+      By.css(".vimvixen-console-info")
+    );
     return p.getText();
   }
 
   async inputKeys(...keys: string[]) {
-    const input = await this.webdriver.findElement(By.css('input'));
+    const input = await this.webdriver.findElement(By.css("input"));
     await input.sendKeys(...keys);
   }
 
   getCompletions(): Promise<CompletionItem[]> {
     return this.webdriver.executeScript(() => {
-      const items = document.querySelectorAll('.vimvixen-console-completion > li');
+      const items = document.querySelectorAll(
+        ".vimvixen-console-completion > li"
+      );
       if (items.length === 0) {
-        throw new Error('completion items not found');
+        throw new Error("completion items not found");
       }
 
       const objs = [];
       for (const li of Array.from(items)) {
-        if (li.classList.contains('vimvixen-console-completion-title')) {
-          objs.push({ type: 'title', text: li.textContent!!.trim() });
-        } else if ('vimvixen-console-completion-item') {
-          const highlight = li.classList.contains('vimvixen-completion-selected');
-          objs.push({ type: 'item', text: li.textContent!!.trim(), highlight });
+        if (li.classList.contains("vimvixen-console-completion-title")) {
+          objs.push({ type: "title", text: li.textContent!!.trim() });
+        } else if ("vimvixen-console-completion-item") {
+          const highlight = li.classList.contains(
+            "vimvixen-completion-selected"
+          );
+          objs.push({ type: "item", text: li.textContent!!.trim(), highlight });
         } else {
           throw new Error(`unexpected class: ${li.className}`);
         }
@@ -68,10 +77,10 @@ export class Console {
   }
 
   async close(): Promise<void> {
-    const input = await this.webdriver.findElement(By.css('input'));
+    const input = await this.webdriver.findElement(By.css("input"));
     await input.sendKeys(Key.ESCAPE);
     // TODO remove sleep
-    await new Promise(resolve => setTimeout(resolve, 100));
+    await new Promise((resolve) => setTimeout(resolve, 100));
     await (this.webdriver.switchTo() as any).parentFrame();
   }
 }
diff --git a/e2e/lib/FormOptionPage.ts b/e2e/lib/FormOptionPage.ts
index 33ce2a7..5551684 100644
--- a/e2e/lib/FormOptionPage.ts
+++ b/e2e/lib/FormOptionPage.ts
@@ -1,5 +1,5 @@
-import { Lanthan } from 'lanthan';
-import { WebDriver, By, until } from 'selenium-webdriver';
+import { Lanthan } from "lanthan";
+import { WebDriver, By, until } from "selenium-webdriver";
 
 export default class FormOptionPage {
   private webdriver: WebDriver;
@@ -9,92 +9,136 @@ export default class FormOptionPage {
   }
 
   async setBlacklist(nth: number, url: string): Promise<void> {
-    const selector = '.form-blacklist-form-row > .column-url';
+    const selector = ".form-blacklist-form-row > .column-url";
     const inputs = await this.webdriver.findElements(By.css(selector));
     if (inputs.length <= nth) {
-      throw new RangeError('Index out of range to set a blacklist')
+      throw new RangeError("Index out of range to set a blacklist");
     }
     await inputs[nth].sendKeys(url);
-    await this.webdriver.executeScript(`document.querySelectorAll('${selector}')[${nth}].blur()`);
+    await this.webdriver.executeScript(
+      `document.querySelectorAll('${selector}')[${nth}].blur()`
+    );
   }
 
-  async setPartialBlacklist(nth: number, url: string, keys: string): Promise<void> {
-    let selector = '.form-partial-blacklist-form-row > .column-url';
+  async setPartialBlacklist(
+    nth: number,
+    url: string,
+    keys: string
+  ): Promise<void> {
+    let selector = ".form-partial-blacklist-form-row > .column-url";
     let inputs = await this.webdriver.findElements(By.css(selector));
     if (inputs.length <= nth) {
-      throw new RangeError('Index out of range to set a partial blacklist')
+      throw new RangeError("Index out of range to set a partial blacklist");
     }
     await inputs[nth].sendKeys(url);
-    await this.webdriver.executeScript(`document.querySelectorAll('${selector}')[${nth}].blur()`);
+    await this.webdriver.executeScript(
+      `document.querySelectorAll('${selector}')[${nth}].blur()`
+    );
 
-    selector = '.form-partial-blacklist-form-row > .column-keys';
+    selector = ".form-partial-blacklist-form-row > .column-keys";
     inputs = await this.webdriver.findElements(By.css(selector));
     if (inputs.length <= nth) {
-      throw new RangeError('Index out of range to set a partial blacklist')
+      throw new RangeError("Index out of range to set a partial blacklist");
     }
     await inputs[nth].sendKeys(keys);
-    await this.webdriver.executeScript(`document.querySelectorAll('${selector}')[${nth}].blur()`);
+    await this.webdriver.executeScript(
+      `document.querySelectorAll('${selector}')[${nth}].blur()`
+    );
   }
 
   async setSearchEngine(nth: number, name: string, url: string) {
-    let selector = '.form-search-form-row > .column-name';
+    let selector = ".form-search-form-row > .column-name";
     let inputs = await this.webdriver.findElements(By.css(selector));
     if (inputs.length <= nth) {
-      throw new RangeError('Index out of range to set a search engine')
+      throw new RangeError("Index out of range to set a search engine");
     }
     await inputs[nth].sendKeys(name);
-    await this.webdriver.executeScript(`document.querySelectorAll('${selector}')[${nth}].blur()`);
+    await this.webdriver.executeScript(
+      `document.querySelectorAll('${selector}')[${nth}].blur()`
+    );
 
-    selector = '.form-search-form-row > .column-url';
+    selector = ".form-search-form-row > .column-url";
     inputs = await this.webdriver.findElements(By.css(selector));
     if (inputs.length <= nth) {
-      throw new RangeError('Index out of range to set a search engine')
+      throw new RangeError("Index out of range to set a search engine");
     }
     await inputs[nth].sendKeys(url);
-    await this.webdriver.executeScript(`document.querySelectorAll('${selector}')[${nth}].blur()`);
+    await this.webdriver.executeScript(
+      `document.querySelectorAll('${selector}')[${nth}].blur()`
+    );
   }
 
   async addBlacklist(): Promise<void> {
-    const rows = await this.webdriver.findElements(By.css(`.form-blacklist-form-row`));
-    const button = await this.webdriver.findElement(By.css('.form-blacklist-form .ui-add-button'))
+    const rows = await this.webdriver.findElements(
+      By.css(`.form-blacklist-form-row`)
+    );
+    const button = await this.webdriver.findElement(
+      By.css(".form-blacklist-form .ui-add-button")
+    );
     await button.click();
-    await this.webdriver.wait(until.elementLocated(By.css(`.form-blacklist-form-row:nth-child(${rows.length + 1})`)));
+    await this.webdriver.wait(
+      until.elementLocated(
+        By.css(`.form-blacklist-form-row:nth-child(${rows.length + 1})`)
+      )
+    );
   }
 
   async addPartialBlacklist(): Promise<void> {
-    const rows = await this.webdriver.findElements(By.css(`.form-partial-blacklist-form-row`));
-    const button = await this.webdriver.findElement(By.css('.form-partial-blacklist-form .ui-add-button'))
+    const rows = await this.webdriver.findElements(
+      By.css(`.form-partial-blacklist-form-row`)
+    );
+    const button = await this.webdriver.findElement(
+      By.css(".form-partial-blacklist-form .ui-add-button")
+    );
     await button.click();
-    await this.webdriver.wait(until.elementLocated(By.css(`.form-partial-blacklist-form-row:nth-child(${rows.length + 2})`)));
+    await this.webdriver.wait(
+      until.elementLocated(
+        By.css(`.form-partial-blacklist-form-row:nth-child(${rows.length + 2})`)
+      )
+    );
   }
 
   async removeBlackList(nth: number): Promise<void> {
-    const buttons = await this.webdriver.findElements(By.css('.form-blacklist-form-row .ui-delete-button'));
+    const buttons = await this.webdriver.findElements(
+      By.css(".form-blacklist-form-row .ui-delete-button")
+    );
     if (buttons.length <= nth) {
-      throw new RangeError('Index out of range to remove blacklist')
+      throw new RangeError("Index out of range to remove blacklist");
     }
-    await buttons[nth].click()
+    await buttons[nth].click();
   }
 
   async removePartialBlackList(nth: number): Promise<void> {
-    const buttons = await this.webdriver.findElements(By.css('.form-partial-blacklist-form-row .ui-delete-button'));
+    const buttons = await this.webdriver.findElements(
+      By.css(".form-partial-blacklist-form-row .ui-delete-button")
+    );
     if (buttons.length <= nth) {
-      throw new RangeError('Index out of range to remove partial blacklist')
+      throw new RangeError("Index out of range to remove partial blacklist");
     }
-    await buttons[nth].click()
+    await buttons[nth].click();
   }
 
   async addSearchEngine(): Promise<void> {
-    const rows = await this.webdriver.findElements(By.css(`.form-search-form-row > .column-name`));
-    const button = await this.webdriver.findElement(By.css('.form-search-form > .ui-add-button'))
+    const rows = await this.webdriver.findElements(
+      By.css(`.form-search-form-row > .column-name`)
+    );
+    const button = await this.webdriver.findElement(
+      By.css(".form-search-form > .ui-add-button")
+    );
     await button.click();
-    await this.webdriver.wait(until.elementLocated(By.css(`.form-search-form-row:nth-child(${rows.length + 1})`)));
+    await this.webdriver.wait(
+      until.elementLocated(
+        By.css(`.form-search-form-row:nth-child(${rows.length + 1})`)
+      )
+    );
   }
 
   async setDefaultSearchEngine(nth: number): Promise<void> {
-    const radios = await this.webdriver.findElements(By.css('.form-search-form-row input[type=radio]'));
+    const radios = await this.webdriver.findElements(
+      By.css(".form-search-form-row input[type=radio]")
+    );
     if (radios.length <= nth) {
-      throw new RangeError('Index out of range to set a default search engine');
+      throw new RangeError("Index out of range to set a default search engine");
     }
     await radios[nth].click();
   }
diff --git a/e2e/lib/JSONOptionPage.ts b/e2e/lib/JSONOptionPage.ts
index d6ed7ee..1c2db5b 100644
--- a/e2e/lib/JSONOptionPage.ts
+++ b/e2e/lib/JSONOptionPage.ts
@@ -1,5 +1,5 @@
-import { Lanthan } from 'lanthan';
-import { WebDriver, By } from 'selenium-webdriver';
+import { Lanthan } from "lanthan";
+import { WebDriver, By } from "selenium-webdriver";
 
 export default class JSONOptionPage {
   private webdriver: WebDriver;
@@ -9,14 +9,20 @@ export default class JSONOptionPage {
   }
 
   async updateSettings(value: string): Promise<void> {
-    const textarea = await this.webdriver.findElement(By.css('textarea'));
-    await this.webdriver.executeScript(`document.querySelector('textarea').value = '${value}'`)
-    await textarea.sendKeys(' ');
-    await this.webdriver.executeScript(() => document.querySelector('textarea')!!.blur());
+    const textarea = await this.webdriver.findElement(By.css("textarea"));
+    await this.webdriver.executeScript(
+      `document.querySelector('textarea').value = '${value}'`
+    );
+    await textarea.sendKeys(" ");
+    await this.webdriver.executeScript(() =>
+      document.querySelector("textarea")!!.blur()
+    );
   }
 
   async getErrorMessage(): Promise<string> {
-    const error = await this.webdriver.findElement(By.css('.settings-ui-input-error'));
+    const error = await this.webdriver.findElement(
+      By.css(".settings-ui-input-error")
+    );
     return error.getText();
   }
 }
diff --git a/e2e/lib/OptionPage.ts b/e2e/lib/OptionPage.ts
index 9f994a0..e1ea759 100644
--- a/e2e/lib/OptionPage.ts
+++ b/e2e/lib/OptionPage.ts
@@ -1,7 +1,7 @@
-import { Lanthan } from 'lanthan';
-import { WebDriver, By } from 'selenium-webdriver';
-import JSONOptionPage from './JSONOptionPage';
-import FormOptionPage from './FormOptionPage';
+import { Lanthan } from "lanthan";
+import { WebDriver, By } from "selenium-webdriver";
+import JSONOptionPage from "./JSONOptionPage";
+import FormOptionPage from "./FormOptionPage";
 
 export default class OptionPage {
   private webdriver: WebDriver;
@@ -11,13 +11,17 @@ export default class OptionPage {
   }
 
   static async open(lanthan: Lanthan) {
-    const url = await lanthan.getWebExtBrowser().runtime.getURL("build/settings.html")
+    const url = await lanthan
+      .getWebExtBrowser()
+      .runtime.getURL("build/settings.html");
     await lanthan.getWebDriver().navigate().to(url);
     return new OptionPage(lanthan);
   }
 
   async switchToForm(): Promise<FormOptionPage> {
-    const useFormInput = await this.webdriver.findElement(By.css('#setting-source-form'));
+    const useFormInput = await this.webdriver.findElement(
+      By.css("#setting-source-form")
+    );
     await useFormInput.click();
     await this.webdriver.switchTo().alert().accept();
     return new FormOptionPage(this.lanthan);
diff --git a/e2e/lib/Page.ts b/e2e/lib/Page.ts
index 31605cb..85bda8d 100644
--- a/e2e/lib/Page.ts
+++ b/e2e/lib/Page.ts
@@ -1,19 +1,18 @@
-import { WebDriver, By, until } from 'selenium-webdriver';
-import { Console } from './Console';
+import { WebDriver, By, until } from "selenium-webdriver";
+import { Console } from "./Console";
 
 type Hint = {
-  displayed: boolean,
-  text: string,
+  displayed: boolean;
+  text: string;
 };
 
 type Selection = {
-  from: number,
-  to: number,
+  from: number;
+  to: number;
 };
 
 export default class Page {
-  private constructor(private webdriver: WebDriver) {
-  }
+  private constructor(private webdriver: WebDriver) {}
 
   static async currentContext(webdriver: WebDriver): Promise<Page> {
     await Page.waitForConsoleLoaded(webdriver);
@@ -26,8 +25,10 @@ export default class Page {
     return new Page(webdriver);
   }
 
-  async sendKeys(...keys: Array<string|number|Promise<string|number>>): Promise<void> {
-    const body = await this.webdriver.findElement(By.css('body'));
+  async sendKeys(
+    ...keys: Array<string | number | Promise<string | number>>
+  ): Promise<void> {
+    const body = await this.webdriver.findElement(By.css("body"));
     await body.sendKeys(...keys);
   }
 
@@ -38,17 +39,23 @@ export default class Page {
   }
 
   async showConsole(): Promise<Console> {
-    const iframe = this.webdriver.findElement(By.css('#vimvixen-console-frame'));
+    const iframe = this.webdriver.findElement(
+      By.css("#vimvixen-console-frame")
+    );
 
-    await this.sendKeys(':');
+    await this.sendKeys(":");
     await this.webdriver.wait(until.elementIsVisible(iframe));
     await this.webdriver.switchTo().frame(0);
-    await this.webdriver.wait(until.elementLocated(By.css('input.vimvixen-console-command-input')));
+    await this.webdriver.wait(
+      until.elementLocated(By.css("input.vimvixen-console-command-input"))
+    );
     return new Console(this.webdriver);
   }
 
   async getConsole(): Promise<Console> {
-    const iframe = this.webdriver.findElement(By.css('#vimvixen-console-frame'));
+    const iframe = this.webdriver.findElement(
+      By.css("#vimvixen-console-frame")
+    );
 
     await this.webdriver.wait(until.elementIsVisible(iframe));
     await this.webdriver.switchTo().frame(0);
@@ -68,16 +75,22 @@ export default class Page {
   }
 
   pageHeight(): Promise<number> {
-    return this.webdriver.executeScript(() => window.document.documentElement.clientHeight);
+    return this.webdriver.executeScript(
+      () => window.document.documentElement.clientHeight
+    );
   }
 
   async getSelection(): Promise<Selection> {
-    const obj = await this.webdriver.executeScript(`return window.getSelection();`) as any;
+    const obj = (await this.webdriver.executeScript(
+      `return window.getSelection();`
+    )) as any;
     return { from: obj.anchorOffset, to: obj.focusOffset };
   }
 
   async clearSelection(): Promise<void> {
-    await this.webdriver.executeScript(`window.getSelection().removeAllRanges()`);
+    await this.webdriver.executeScript(
+      `window.getSelection().removeAllRanges()`
+    );
   }
 
   async switchToTop(): Promise<void> {
@@ -85,15 +98,17 @@ export default class Page {
   }
 
   async waitAndGetHints(): Promise<Hint[]> {
-    await this.webdriver.wait(until.elementsLocated(By.css('.vimvixen-hint')));
+    await this.webdriver.wait(until.elementsLocated(By.css(".vimvixen-hint")));
 
-    const elements = await this.webdriver.findElements(By.css(`.vimvixen-hint`));
+    const elements = await this.webdriver.findElements(
+      By.css(`.vimvixen-hint`)
+    );
     const hints = [];
     for (const e of elements) {
-      const display = await e.getCssValue('display');
+      const display = await e.getCssValue("display");
       const text = await e.getText();
       hints.push({
-        displayed: display !== 'none',
+        displayed: display !== "none",
         text: text,
       });
     }
@@ -105,7 +120,9 @@ export default class Page {
     if (!topFrame) {
       return;
     }
-    await webdriver.wait(until.elementLocated(By.css('iframe.vimvixen-console-frame')));
-    await new Promise(resolve => setTimeout(resolve, 100));
+    await webdriver.wait(
+      until.elementLocated(By.css("iframe.vimvixen-console-frame"))
+    );
+    await new Promise((resolve) => setTimeout(resolve, 100));
   }
 }
diff --git a/e2e/lib/SettingRepository.ts b/e2e/lib/SettingRepository.ts
index 3bdf6d2..87fb50b 100644
--- a/e2e/lib/SettingRepository.ts
+++ b/e2e/lib/SettingRepository.ts
@@ -1,18 +1,15 @@
-import { JSONTextSettings, SettingSource } from '../../src/shared/SettingData';
-import Settings from '../../src/shared/settings/Settings';
+import { JSONTextSettings, SettingSource } from "../../src/shared/SettingData";
+import Settings from "../../src/shared/settings/Settings";
 
 export default class SettingRepository {
-  constructor(
-    private readonly browser: any,
-  ) {
-  }
+  constructor(private readonly browser: any) {}
 
   async saveJSON(settings: Settings): Promise<void> {
     await this.browser.storage.sync.set({
       settings: {
         source: SettingSource.JSON,
-        json:  JSONTextSettings.fromSettings(settings).toJSONText(),
-      }
+        json: JSONTextSettings.fromSettings(settings).toJSONText(),
+      },
     });
   }
 }
diff --git a/e2e/lib/TestServer.ts b/e2e/lib/TestServer.ts
index 5b9eee3..e0c711b 100644
--- a/e2e/lib/TestServer.ts
+++ b/e2e/lib/TestServer.ts
@@ -1,6 +1,6 @@
-import * as http from 'http';
-import * as net from 'net'
-import express from 'express';
+import * as http from "http";
+import * as net from "net";
+import express from "express";
 
 type HandlerFunc = (req: express.Request, res: express.Response) => void;
 
@@ -9,10 +9,7 @@ export default class TestServer {
 
   private app: express.Application;
 
-  constructor(
-    private port = 0,
-    private address = '127.0.0.1',
-  ){
+  constructor(private port = 0, private address = "127.0.0.1") {
     this.app = express();
   }
 
@@ -23,30 +20,30 @@ export default class TestServer {
 
   receiveContent(path: string, content: string): TestServer {
     this.app.get(path, (_req: express.Request, res: express.Response) => {
-      res.status(200).send(content)
+      res.status(200).send(content);
     });
     return this;
   }
-  
-  url(path = '/'): string {
+
+  url(path = "/"): string {
     if (!this.http) {
-      throw new Error('http server not started');
+      throw new Error("http server not started");
     }
 
     const addr = this.http.address() as net.AddressInfo;
-    return `http://${addr.address}:${addr.port}${path}`
+    return `http://${addr.address}:${addr.port}${path}`;
   }
 
-  start(): Promise<void>  {
+  start(): Promise<void> {
     if (this.http) {
-      throw new Error('http server already started');
+      throw new Error("http server already started");
     }
 
-    this.http = http.createServer(this.app)
+    this.http = http.createServer(this.app);
     return new Promise((resolve) => {
       this.http!!.listen(this.port, this.address, () => {
         resolve();
-      })
+      });
     });
   }
 
@@ -59,6 +56,6 @@ export default class TestServer {
         this.http = undefined;
         resolve();
       });
-    })
+    });
   }
 }
diff --git a/e2e/lib/clipboard.ts b/e2e/lib/clipboard.ts
index 297b71a..6cc94cb 100644
--- a/e2e/lib/clipboard.ts
+++ b/e2e/lib/clipboard.ts
@@ -1,18 +1,19 @@
-import { spawn } from 'child_process';
+import { spawn } from "child_process";
 
 const readLinux = (): Promise<string> => {
-  let stdout = '', stderr = '';
+  let stdout = "",
+    stderr = "";
   return new Promise((resolve) => {
-    const xsel = spawn('xsel', ['--clipboard', '--output']);
-    xsel.stdout.on('data', (data) => {
+    const xsel = spawn("xsel", ["--clipboard", "--output"]);
+    xsel.stdout.on("data", (data) => {
       stdout += data;
     });
-    xsel.stderr.on('data', (data) => {
+    xsel.stderr.on("data", (data) => {
       stderr += data;
     });
-    xsel.on('close', (code) => {
+    xsel.on("close", (code) => {
       if (code !== 0) {
-        throw new Error(`xsel returns ${code}: ${stderr}`)
+        throw new Error(`xsel returns ${code}: ${stderr}`);
       }
       resolve(stdout);
     });
@@ -20,15 +21,15 @@ const readLinux = (): Promise<string> => {
 };
 
 const writeLinux = (data: string): Promise<string> => {
-  let stderr = '';
+  let stderr = "";
   return new Promise((resolve) => {
-    const xsel = spawn('xsel', ['--clipboard', '--input']);
-    xsel.stderr.on('data', (data) => {
+    const xsel = spawn("xsel", ["--clipboard", "--input"]);
+    xsel.stderr.on("data", (data) => {
       stderr += data;
     });
-    xsel.on('close', (code) => {
+    xsel.on("close", (code) => {
       if (code !== 0) {
-        throw new Error(`xsel returns ${code}: ${stderr}`)
+        throw new Error(`xsel returns ${code}: ${stderr}`);
       }
       resolve();
     });
@@ -38,18 +39,19 @@ const writeLinux = (data: string): Promise<string> => {
 };
 
 const readDarwin = (): Promise<string> => {
-  let stdout = '', stderr = '';
+  let stdout = "",
+    stderr = "";
   return new Promise((resolve) => {
-    const pbpaste = spawn('pbpaste');
-    pbpaste.stdout.on('data', (data) => {
+    const pbpaste = spawn("pbpaste");
+    pbpaste.stdout.on("data", (data) => {
       stdout += data;
     });
-    pbpaste.stderr.on('data', (data) => {
+    pbpaste.stderr.on("data", (data) => {
       stderr += data;
     });
-    pbpaste.on('close', (code) => {
+    pbpaste.on("close", (code) => {
       if (code !== 0) {
-        throw new Error(`pbpaste returns ${code}: ${stderr}`)
+        throw new Error(`pbpaste returns ${code}: ${stderr}`);
       }
       resolve(stdout);
     });
@@ -57,15 +59,15 @@ const readDarwin = (): Promise<string> => {
 };
 
 const writeDarwin = (data: string): Promise<string> => {
-  let stderr = '';
+  let stderr = "";
   return new Promise((resolve) => {
-    const pbcopy = spawn('pbcopy');
-    pbcopy.stderr.on('data', (data) => {
+    const pbcopy = spawn("pbcopy");
+    pbcopy.stderr.on("data", (data) => {
       stderr += data;
     });
-    pbcopy.on('close', (code) => {
+    pbcopy.on("close", (code) => {
       if (code !== 0) {
-        throw new Error(`pbcopy returns ${code}: ${stderr}`)
+        throw new Error(`pbcopy returns ${code}: ${stderr}`);
       }
       resolve();
     });
@@ -83,25 +85,22 @@ class UnsupportedError extends Error {
 
 const read = () => {
   switch (process.platform) {
-  case 'linux':
-    return readLinux();
-  case 'darwin':
-    return readDarwin();
+    case "linux":
+      return readLinux();
+    case "darwin":
+      return readDarwin();
   }
   throw new UnsupportedError(process.platform);
-}
+};
 
 const write = (data: string) => {
   switch (process.platform) {
-  case 'linux':
-    return writeLinux(data);
-  case 'darwin':
-    return writeDarwin(data);
+    case "linux":
+      return writeLinux(data);
+    case "darwin":
+      return writeDarwin(data);
   }
   throw new UnsupportedError(process.platform);
-}
-
-export {
-  read,
-  write,
 };
+
+export { read, write };